diff --git a/pyproject.toml b/pyproject.toml
index 2ea91e0..0e6b8ed 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "basic_data_handling"
-version = "0.2.2"
+version = "0.3.0"
 description = """NOTE: Still in development! Expect breaking changes!
 Basic Python functions for manipulating data that every programmer is used to.
 Currently supported ComfyUI data types: BOOLEAN, FLOAT, INT, STRING and data lists.
@@ -47,11 +47,12 @@ minversion = "8.0"
 pythonpath = [
     "src",
     "../..",  # Path to parent directory containing comfy module
+    "."
 ]
 testpaths = [
     "tests",
 ]
-# python_files = ["test_*.py"]
+#python_files = ["test_*.py"]
 python_files = ["test_boolean_nodes.py"]
 
 [tool.mypy]
diff --git a/src/basic_data_handling/comparison_nodes.py b/src/basic_data_handling/comparison_nodes.py
index da4f7de..e7cef2d 100644
--- a/src/basic_data_handling/comparison_nodes.py
+++ b/src/basic_data_handling/comparison_nodes.py
@@ -58,7 +58,7 @@ class NotEqual(ComfyNodeABC):
         return (value1 != value2,)
 
 
-class LessThan:
+class LessThan(ComfyNodeABC):
     """
     Checks if the first value is less than the second.
 
@@ -84,7 +84,7 @@ class LessThan:
         return (value1 < value2,)
 
 
-class LessThanOrEqual:
+class LessThanOrEqual(ComfyNodeABC):
     """
     Checks if the first value is less than or equal to the second.
 
@@ -110,7 +110,7 @@ class LessThanOrEqual:
         return (value1 <= value2,)
 
 
-class GreaterThan:
+class GreaterThan(ComfyNodeABC):
     """
     Checks if the first value is greater than the second.
 
@@ -136,7 +136,7 @@ class GreaterThan:
         return (value1 > value2,)
 
 
-class GreaterThanOrEqual:
+class GreaterThanOrEqual(ComfyNodeABC):
     """
     Checks if the first value is greater than or equal to the second.
 
@@ -162,7 +162,7 @@ class GreaterThanOrEqual:
         return (value1 >= value2,)
 
 
-class IsNull:
+class IsNull(ComfyNodeABC):
     """
     Checks if a value is None/null.
 
@@ -187,7 +187,7 @@ class IsNull:
         return (value is None,)
 
 
-class NumberInRange:
+class NumberInRange(ComfyNodeABC):
     """
     Checks if a number is within a specified range.
 
@@ -223,7 +223,7 @@ class NumberInRange:
         return (min_check and max_check,)
 
 
-class CompareLength:
+class CompareLength(ComfyNodeABC):
     """
     Compares the length of a container (string, list, etc) with a value.
 
@@ -269,7 +269,7 @@ class CompareLength:
             raise ValueError(f"Unknown operator: {operator}")
 
 
-class StringComparison:
+class StringComparison(ComfyNodeABC):
     """
     Compares two strings using a selected comparison operator.
 
diff --git a/src/basic_data_handling/float_nodes.py b/src/basic_data_handling/float_nodes.py
index 5492ae3..3241ed8 100644
--- a/src/basic_data_handling/float_nodes.py
+++ b/src/basic_data_handling/float_nodes.py
@@ -149,6 +149,8 @@ class FloatDivideSafe(ComfyNodeABC):
 
     def divide(self, float1: float, float2: float) -> tuple[float]:
         if float2 == 0.0:
+            if float1 == 0.0:
+                return (float('nan'),)
             return (float('inf') if float1 > 0 else float('-inf'),)
         return (float1 / float2,)
 
diff --git a/tests/test_comparison_nodes.py b/tests/test_comparison_nodes.py
index 9d44431..ff25f4d 100644
--- a/tests/test_comparison_nodes.py
+++ b/tests/test_comparison_nodes.py
@@ -1,4 +1,4 @@
-#import pytest
+import pytest
 from src.basic_data_handling.comparison_nodes import (
     Equal,
     NotEqual,
@@ -20,6 +20,9 @@ def test_equal():
     assert node.compare("hello", "hello") == (True,)
     assert node.compare([1, 2], [1, 2]) == (True,)
     assert node.compare(None, None) == (True,)
+    # Test complex objects
+    assert node.compare({"a": 1}, {"a": 1}) == (True,)
+    assert node.compare({"a": 1}, {"a": 2}) == (False,)
 
 
 def test_not_equal():
@@ -29,6 +32,9 @@ def test_not_equal():
     assert node.compare("hello", "world") == (True,)
     assert node.compare([1, 2], [1, 3]) == (True,)
     assert node.compare(None, []) == (True,)
+    # Test complex objects
+    assert node.compare({"a": 1}, {"b": 1}) == (True,)
+    assert node.compare({"a": 1}, {"a": 1}) == (False,)
 
 
 def test_greater_than():
@@ -37,6 +43,12 @@ def test_greater_than():
     assert node.compare(5, 10) == (False,)
     assert node.compare(10, 10) == (False,)
     assert node.compare(5.6, 2.3) == (True,)
+    # Test negative numbers
+    assert node.compare(-5, -10) == (True,)
+    assert node.compare(-10, -5) == (False,)
+    # Test zeroes
+    assert node.compare(0, -1) == (True,)
+    assert node.compare(0, 0) == (False,)
 
 
 def test_less_than():
@@ -45,6 +57,12 @@ def test_less_than():
     assert node.compare(10, 5) == (False,)
     assert node.compare(10, 10) == (False,)
     assert node.compare(2.3, 5.6) == (True,)
+    # Test negative numbers
+    assert node.compare(-10, -5) == (True,)
+    assert node.compare(-5, -10) == (False,)
+    # Test zeroes
+    assert node.compare(-1, 0) == (True,)
+    assert node.compare(0, 0) == (False,)
 
 
 def test_greater_than_or_equal():
@@ -53,6 +71,12 @@ def test_greater_than_or_equal():
     assert node.compare(15, 10) == (True,)
     assert node.compare(5, 10) == (False,)
     assert node.compare(5.5, 5.5) == (True,)
+    # Test negative numbers
+    assert node.compare(-5, -10) == (True,)
+    assert node.compare(-5, -5) == (True,)
+    # Test zeroes
+    assert node.compare(0, 0) == (True,)
+    assert node.compare(0.0, -0.0) == (True,)
 
 
 def test_less_than_or_equal():
@@ -61,6 +85,12 @@ def test_less_than_or_equal():
     assert node.compare(5, 15) == (True,)
     assert node.compare(15, 5) == (False,)
     assert node.compare(3.1, 3.1) == (True,)
+    # Test negative numbers
+    assert node.compare(-10, -5) == (True,)
+    assert node.compare(-5, -5) == (True,)
+    # Test zeroes
+    assert node.compare(0, 0) == (True,)
+    assert node.compare(-0.0, 0.0) == (True,)
 
 
 def test_string_comparison():
@@ -71,11 +101,20 @@ def test_string_comparison():
     assert node.compare("apple", "banana", "<", "True") == (True,)
     assert node.compare("apple", "banana", ">", "True") == (False,)
     assert node.compare("apple", "apple", "!=", "True") == (False,)
+    assert node.compare("banana", "apple", ">=", "True") == (True,)
+    assert node.compare("apple", "banana", "<=", "True") == (True,)
 
     # Case-insensitive tests
     assert node.compare("Hello", "hello", "==", "False") == (True,)
     assert node.compare("Apple", "BANANA", "<", "False") == (True,)
     assert node.compare("Grape", "GRAPE", ">=", "False") == (True,)
+    assert node.compare("ZEBRA", "zoo", "<", "False") == (True,)
+    assert node.compare("ZOO", "zebra", ">", "False") == (True,)
+
+    # Empty string tests
+    assert node.compare("", "hello", "<", "True") == (True,)
+    assert node.compare("hello", "", ">", "True") == (True,)
+    assert node.compare("", "", "==", "True") == (True,)
 
 
 def test_number_in_range():
@@ -84,15 +123,27 @@ def test_number_in_range():
     # Inclusive range tests
     assert node.check_range(50, 0, 100) == (True,)
     assert node.check_range(0, 0, 100) == (True,)
+    assert node.check_range(100, 0, 100) == (True,)
 
     # Exclusive range tests
     assert node.check_range(0, 0, 100, include_min="False") == (False,)
     assert node.check_range(100, 0, 100, include_max="False") == (False,)
+    assert node.check_range(50, 0, 100, include_min="False", include_max="False") == (True,)
 
     # Out of range tests
     assert node.check_range(-1, 0, 100) == (False,)
     assert node.check_range(101, 0, 100) == (False,)
 
+    # Edge cases
+    assert node.check_range(0, 0, 0) == (True,)
+    assert node.check_range(0, 0, 0, include_min="False") == (False,)
+    assert node.check_range(0, 0, 0, include_max="False") == (False,)
+
+    # Negative range tests
+    assert node.check_range(-50, -100, -10) == (True,)
+    assert node.check_range(-10, -100, -10) == (True,)
+    assert node.check_range(-100, -100, -10) == (True,)
+
 
 def test_is_null():
     node = IsNull()
@@ -100,16 +151,37 @@ def test_is_null():
     assert node.check_null(0) == (False,)
     assert node.check_null("") == (False,)
     assert node.check_null([]) == (False,)
+    assert node.check_null(False) == (False,)
+    # Additional edge cases
+    assert node.check_null([None]) == (False,)  # List containing None
+    assert node.check_null("None") == (False,)  # String "None"
 
 
 def test_compare_length():
     node = CompareLength()
 
-    # Valid comparisons
+    # Valid comparisons with different operators
     assert node.compare_length([1, 2, 3], "==", 3) == (True, 3)
     assert node.compare_length("hello", "!=", 4) == (True, 5)
     assert node.compare_length((1, 2), ">", 1) == (True, 2)
+    assert node.compare_length([1, 2, 3], "<", 4) == (True, 3)
+    assert node.compare_length("test", ">=", 4) == (True, 4)
+    assert node.compare_length([1], "<=", 1) == (True, 1)
+
+    # Different container types
+    assert node.compare_length({"a", "b", "c"}, "==", 3) == (True, 3)  # Set
+    assert node.compare_length({"key1": 1, "key2": 2}, "==", 2) == (True, 2)  # Dict
+
+    # Empty containers
+    assert node.compare_length([], "==", 0) == (True, 0)
+    assert node.compare_length("", "==", 0) == (True, 0)
+    assert node.compare_length({}, "==", 0) == (True, 0)
 
     # Invalid comparisons
-    assert node.compare_length({"key": "value"}, "<", 1) == (False, 1)
-    assert node.compare_length(123, "==", 0) == (False, -1)  # Non-container input edge case
+    assert node.compare_length({"key": "value"}, "<", 1) == (False, 1)  # Dict with 1 item
+    assert node.compare_length(123, "==", 0) == (False, -1)  # Non-container input
+    assert node.compare_length(None, "==", 0) == (False, -1)  # None
+
+    # Error case with invalid operator
+    with pytest.raises(ValueError):
+        node.compare_length([1, 2, 3], "invalid", 3)
diff --git a/tests/test_data_list_nodes.py b/tests/test_data_list_nodes.py
index e6e5086..ab98877 100644
--- a/tests/test_data_list_nodes.py
+++ b/tests/test_data_list_nodes.py
@@ -14,7 +14,6 @@ from src.basic_data_handling.data_list_nodes import (
     DataListGetItem,
     DataListSetItem,
     DataListContains,
-    DataListCreateEmpty,
     DataListZip,
     DataListFilter,
     DataListMin,
@@ -119,21 +118,18 @@ def test_contains():
     assert node.contains(list=[], value=["x"]) == (False,)
 
 
-def test_create_empty():
-    node = DataListCreateEmpty()
-    assert node.create_empty() == ([],)
-
-
 def test_zip():
     node = DataListZip()
     assert node.zip_lists(list1=[1, 2], list2=["a", "b"]) == ([[1, "a"], [2, "b"]],)
     assert node.zip_lists(list1=[1], list2=["a", "b"]) == ([[1, "a"]],)  # Shortest list length
+    assert node.zip_lists(list1=[1, 2, 3], list2=["a", "b"]) == ([[1, "a"], [2, "b"]],)  # Different lengths
 
 
 def test_filter():
     node = DataListFilter()
     assert node.filter_data(value=[1, 2, 3], filter=[False, True, False]) == ([1, 3],)
     assert node.filter_data(value=[1, 2], filter=[True, True]) == ([],)
+    assert node.filter_data(value=[1, 2, 3], filter=[False, False, False]) == ([1, 2, 3],)
 
 
 def test_min():
diff --git a/tests/test_dict_nodes.py b/tests/test_dict_nodes.py
index 03a2738..39fd979 100644
--- a/tests/test_dict_nodes.py
+++ b/tests/test_dict_nodes.py
@@ -34,30 +34,46 @@ def test_dict_get():
     my_dict = {"key1": "value1", "key2": "value2"}
     assert node.get(my_dict, "key1") == ("value1",)
     assert node.get(my_dict, "key3", default="default_value") == ("default_value",)
+    # Test with no default specified
+    assert node.get(my_dict, "non_existent") == (None,)
 
 
 def test_dict_set():
     node = DictSet()
     my_dict = {"key1": "value1"}
     assert node.set(my_dict, "key2", "value2") == ({"key1": "value1", "key2": "value2"},)
+    # Test overwriting existing key
+    assert node.set(my_dict, "key1", "new_value") == ({"key1": "new_value"},)
+    # Test with empty dict
+    assert node.set({}, "key", "value") == ({"key": "value"},)
 
 
 def test_dict_keys():
     node = DictKeys()
     my_dict = {"key1": "value1", "key2": "value2"}
     assert node.keys(my_dict) == (["key1", "key2"],)
+    # Test with empty dict
+    assert node.keys({}) == ([],)
 
 
 def test_dict_values():
     node = DictValues()
     my_dict = {"key1": "value1", "key2": "value2"}
     assert node.values(my_dict) == (["value1", "value2"],)
+    # Test with empty dict
+    assert node.values({}) == ([],)
 
 
 def test_dict_items():
     node = DictItems()
     my_dict = {"key1": "value1", "key2": "value2"}
-    assert node.items(my_dict) == ([("key1", "value1"), ("key2", "value2")],)
+    # Note that the order might not be preserved, so we check if items are in the result
+    items = node.items(my_dict)[0]
+    assert len(items) == 2
+    assert ("key1", "value1") in items
+    assert ("key2", "value2") in items
+    # Test with empty dict
+    assert node.items({}) == ([],)
 
 
 def test_dict_contains_key():
@@ -65,31 +81,52 @@ def test_dict_contains_key():
     my_dict = {"key1": "value1"}
     assert node.contains_key(my_dict, "key1") == (True,)
     assert node.contains_key(my_dict, "key2") == (False,)
+    # Test with empty dict
+    assert node.contains_key({}, "any_key") == (False,)
 
 
 def test_dict_from_keys():
     node = DictFromKeys()
     keys = ["key1", "key2"]
     assert node.from_keys(keys, value="value") == ({"key1": "value", "key2": "value"},)
+    # Test without value (should use None)
+    assert node.from_keys(keys) == ({"key1": None, "key2": None},)
+    # Test with empty keys list
+    assert node.from_keys([]) == ({},)
 
 
 def test_dict_pop():
     node = DictPop()
     my_dict = {"key1": "value1", "key2": "value2"}
     assert node.pop(my_dict, "key1") == ({"key2": "value2"}, "value1")
+    # Test with default value for non-existent key
+    assert node.pop(my_dict, "non_existent", default_value="default") == (my_dict, "default")
+    # Test with no default for non-existent key - should not modify dict
+    assert node.pop({"a": 1}, "b") == ({"a": 1}, None)
 
 
 def test_dict_pop_item():
     node = DictPopItem()
     my_dict = {"key1": "value1"}
-    assert node.popitem(my_dict) == ({}, "key1", "value1", True)
+    result = node.popitem(my_dict)
+    # Since we only have one item, we know what should be popped
+    assert result[0] == {}  # remaining dict is empty
+    assert result[1] == "key1"  # popped key
+    assert result[2] == "value1"  # popped value
+    assert result[3] is True  # success
+    # Test with empty dict
     assert node.popitem({}) == ({}, "", None, False)
 
 
 def test_dict_set_default():
     node = DictSetDefault()
     my_dict = {"key1": "value1"}
+    # Test setting a key that doesn't exist
     assert node.setdefault(my_dict, "key2", "default") == ({"key1": "value1", "key2": "default"}, "default")
+    # Test with a key that already exists
+    assert node.setdefault(my_dict, "key1", "new_default") == ({"key1": "value1"}, "value1")
+    # Test with empty dict
+    assert node.setdefault({}, "key", "value") == ({"key": "value"}, "value")
 
 
 def test_dict_update():
@@ -97,69 +134,153 @@ def test_dict_update():
     my_dict = {"key1": "value1"}
     update_dict = {"key2": "value2"}
     assert node.update(my_dict, update_dict) == ({"key1": "value1", "key2": "value2"},)
+    # Test updating with overlapping keys
+    assert node.update({"a": 1, "b": 2}, {"b": 3, "c": 4}) == ({"a": 1, "b": 3, "c": 4},)
+    # Test with empty update dict
+    assert node.update(my_dict, {}) == (my_dict,)
+    # Test with empty original dict
+    assert node.update({}, update_dict) == (update_dict,)
 
 
 def test_dict_length():
     node = DictLength()
-    my_dict = {"key1": "value1"}
-    assert node.length(my_dict) == (1,)
+    my_dict = {"key1": "value1", "key2": "value2"}
+    assert node.length(my_dict) == (2,)
+    # Test with empty dict
+    assert node.length({}) == (0,)
 
 
 def test_dict_merge():
     node = DictMerge()
     dict1 = {"key1": "value1"}
     dict2 = {"key2": "value2"}
+    # Test basic merge
     assert node.merge(dict1, dict2) == ({"key1": "value1", "key2": "value2"},)
+    # Test with overlapping keys (later dicts override earlier ones)
+    assert node.merge({"a": 1}, {"a": 2}) == ({"a": 2},)
+    # Test with more than two dicts
+    result = node.merge({"a": 1}, {"b": 2}, {"c": 3})
+    assert result == ({"a": 1, "b": 2, "c": 3},)
+    # Test with empty dicts
+    assert node.merge(dict1, {}) == (dict1,)
+    assert node.merge({}, dict1) == (dict1,)
 
 
 def test_dict_get_keys_values():
     node = DictGetKeysValues()
     my_dict = {"key1": "value1", "key2": "value2"}
-    assert node.get_keys_values(my_dict) == (["key1", "key2"], ["value1", "value2"])
+    keys, values = node.get_keys_values(my_dict)
+    # Check keys and values contents (order may vary)
+    assert set(keys) == {"key1", "key2"}
+    assert set(values) == {"value1", "value2"}
+    # Test with empty dict
+    assert node.get_keys_values({}) == ([], [])
 
 
 def test_dict_remove():
     node = DictRemove()
-    my_dict = {"key1": "value1"}
-    assert node.remove(my_dict, "key1") == ({}, True)
+    my_dict = {"key1": "value1", "key2": "value2"}
+    # Test successful removal
+    assert node.remove(my_dict, "key1") == ({"key2": "value2"}, True)
+    # Test removal of non-existent key
+    assert node.remove(my_dict, "non_existent") == (my_dict, False)
+    # Test with empty dict
+    assert node.remove({}, "any_key") == ({}, False)
 
 
 def test_dict_filter_by_keys():
     node = DictFilterByKeys()
-    my_dict = {"key1": "value1", "key2": "value2"}
-    keys = ["key1"]
-    assert node.filter_by_keys(my_dict, keys) == ({"key1": "value1"},)
+    my_dict = {"key1": "value1", "key2": "value2", "key3": "value3"}
+    # Test with subset of keys
+    assert node.filter_by_keys(my_dict, ["key1", "key3"]) == ({"key1": "value1", "key3": "value3"},)
+    # Test with non-existent keys
+    assert node.filter_by_keys(my_dict, ["key1", "non_existent"]) == ({"key1": "value1"},)
+    # Test with empty keys list
+    assert node.filter_by_keys(my_dict, []) == ({},)
+    # Test with empty dict
+    assert node.filter_by_keys({}, ["any_key"]) == ({},)
 
 
 def test_dict_exclude_keys():
     node = DictExcludeKeys()
-    my_dict = {"key1": "value1", "key2": "value2"}
-    keys = ["key1"]
-    assert node.exclude_keys(my_dict, keys) == ({"key2": "value2"},)
+    my_dict = {"key1": "value1", "key2": "value2", "key3": "value3"}
+    # Test excluding some keys
+    assert node.exclude_keys(my_dict, ["key1", "key3"]) == ({"key2": "value2"},)
+    # Test excluding non-existent keys
+    assert node.exclude_keys(my_dict, ["non_existent"]) == (my_dict,)
+    # Test excluding all keys
+    assert node.exclude_keys(my_dict, ["key1", "key2", "key3"]) == ({},)
+    # Test with empty exclude list
+    assert node.exclude_keys(my_dict, []) == (my_dict,)
+    # Test with empty dict
+    assert node.exclude_keys({}, ["any_key"]) == ({},)
 
 
 def test_dict_get_multiple():
     node = DictGetMultiple()
     my_dict = {"key1": "value1", "key2": "value2"}
-    keys = ["key1", "key3"]
-    assert node.get_multiple(my_dict, keys, default="default") == (["value1", "default"],)
+    # Test getting existing keys
+    assert node.get_multiple(my_dict, ["key1", "key2"]) == (["value1", "value2"],)
+    # Test with mix of existing and non-existent keys
+    assert node.get_multiple(my_dict, ["key1", "key3"], default="default") == (["value1", "default"],)
+    # Test with only non-existent keys
+    assert node.get_multiple(my_dict, ["key3", "key4"], default="default") == (["default", "default"],)
+    # Test with empty keys list
+    assert node.get_multiple(my_dict, []) == ([],)
+    # Test with empty dict
+    assert node.get_multiple({}, ["key1"], default="default") == (["default"],)
 
 
 def test_dict_invert():
     node = DictInvert()
     my_dict = {"key1": "value1", "key2": "value2"}
+    # Test basic inversion
     assert node.invert(my_dict) == ({"value1": "key1", "value2": "key2"}, True)
+    # Test with duplicated values
+    result, success = node.invert({"key1": "value", "key2": "value"})
+    # With duplicate values, the last key wins
+    assert result == {"value": "key2"}
+    assert success is True
+    # Test with empty dict
+    assert node.invert({}) == ({}, True)
 
 
 def test_dict_create_from_lists():
     node = DictCreateFromLists()
-    keys = ["key1", "key2"]
-    values = ["value1", "value2"]
-    assert node.create_from_lists(keys, values) == ({"key1": "value1", "key2": "value2"},)
+    keys = ["key1", "key2", "key3"]
+    values = ["value1", "value2", "value3"]
+    # Test with matching length lists
+    assert node.create_from_lists(keys, values) == ({"key1": "value1", "key2": "value2", "key3": "value3"},)
+    # Test with more keys than values
+    assert node.create_from_lists(keys, ["value1", "value2"]) == ({"key1": "value1", "key2": "value2"},)
+    # Test with more values than keys
+    assert node.create_from_lists(["key1", "key2"], values) == ({"key1": "value1", "key2": "value2"},)
+    # Test with empty lists
+    assert node.create_from_lists([], []) == ({},)
 
 
 def test_dict_compare():
     node = DictCompare()
-    dict1 = {"key1": "value1"}
-    dict2 = {"key1": "value1"}
+    # Test identical dictionaries
+    dict1 = {"key1": "value1", "key2": "value2"}
+    dict2 = {"key1": "value1", "key2": "value2"}
     assert node.compare(dict1, dict2) == (True, [], [], [])
+
+    # Test dictionaries with different values
+    dict3 = {"key1": "value1", "key2": "different"}
+    are_equal, only_in_1, only_in_2, diff_values = node.compare(dict1, dict3)
+    assert are_equal is False
+    assert only_in_1 == []
+    assert only_in_2 == []
+    assert "key2" in diff_values
+
+    # Test dictionaries with different keys
+    dict4 = {"key1": "value1", "key3": "value3"}
+    are_equal, only_in_1, only_in_2, diff_values = node.compare(dict1, dict4)
+    assert are_equal is False
+    assert "key2" in only_in_1
+    assert "key3" in only_in_2
+    assert diff_values == []
+
+    # Test empty dictionaries
+    assert node.compare({}, {}) == (True, [], [], [])
diff --git a/tests/test_float_nodes.py b/tests/test_float_nodes.py
index 1f548cb..19bb9d9 100644
--- a/tests/test_float_nodes.py
+++ b/tests/test_float_nodes.py
@@ -1,9 +1,12 @@
+import math
 import pytest
 from src.basic_data_handling.float_nodes import (
+    FloatCreate,
     FloatAdd,
     FloatSubtract,
     FloatMultiply,
     FloatDivide,
+    FloatDivideSafe,
     FloatPower,
     FloatRound,
     FloatIsInteger,
@@ -12,6 +15,15 @@ from src.basic_data_handling.float_nodes import (
     FloatFromHex,
 )
 
+def test_float_create():
+    node = FloatCreate()
+    assert node.create("3.14") == (3.14,)
+    assert node.create("-2.5") == (-2.5,)
+    assert node.create("0.0") == (0.0,)
+    with pytest.raises(ValueError):
+        node.create("not a number")
+
+
 def test_float_add():
     node = FloatAdd()
     assert node.add(2.2, 2.2) == (4.4,)
@@ -41,6 +53,20 @@ def test_float_divide():
         node.divide(5.0, 0.0)
 
 
+def test_float_divide_safe():
+    node = FloatDivideSafe()
+
+    assert node.divide(7.0, 2.0) == (3.5,)
+    assert node.divide(-6.0, 3.0) == (-2.0,)
+    assert node.divide(5.0, 0.0) == (float('inf'),)
+    assert node.divide(-5.0, 0.0) == (float('-inf'),)
+
+    # Special handling for NaN because NaN != NaN
+    result = node.divide(0.0, 0.0)
+    assert len(result) == 1
+    assert math.isnan(result[0])
+
+
 def test_float_power():
     node = FloatPower()
     assert node.power(2.0, 3.0) == (8.0,)
diff --git a/tests/test_int_nodes.py b/tests/test_int_nodes.py
index 1b34b02..1c1e753 100644
--- a/tests/test_int_nodes.py
+++ b/tests/test_int_nodes.py
@@ -4,12 +4,15 @@ from src.basic_data_handling.int_nodes import (
     IntSubtract,
     IntMultiply,
     IntDivide,
+    IntDivideSafe,
     IntModulus,
     IntPower,
     IntBitLength,
     IntToBytes,
     IntFromBytes,
     IntBitCount,
+    IntCreate,
+    IntCreateWithBase,
 )
 
 
@@ -83,4 +86,32 @@ def test_int_bit_count():
     node = IntBitCount()
     assert node.bit_count(0) == (0,)  # Zero has no 1 bits
     assert node.bit_count(255) == (8,)  # 255 is 11111111 (8 ones)
-    assert node.bit_count(-255) == (8,)  # Negative integer has the same bit count
\ No newline at end of file
+    assert node.bit_count(-255) == (8,)  # Negative integer has the same bit count
+
+
+def test_int_create():
+    node = IntCreate()
+    assert node.create("42") == (42,)
+    assert node.create("-100") == (-100,)
+    assert node.create("0") == (0,)
+    assert node.create("0xFF") == (255,)  # Hexadecimal
+    assert node.create("0b1010") == (10,)  # Binary
+    assert node.create("0o777") == (511,)  # Octal
+
+
+def test_int_create_with_base():
+    node = IntCreateWithBase()
+    assert node.create("42", 10) == (42,)
+    assert node.create("FF", 16) == (255,)
+    assert node.create("1010", 2) == (10,)
+    assert node.create("777", 8) == (511,)
+    with pytest.raises(ValueError):
+        node.create("FF", 10)  # Invalid characters for base 10
+
+
+def test_int_divide_safe():
+    node = IntDivideSafe()
+    assert node.divide(10, 2, 9223372036854775807) == (5,)
+    assert node.divide(9, 4, 9223372036854775807) == (2,)  # Integer division
+    assert node.divide(10, 0, 9223372036854775807) == (9223372036854775807,)  # Positive infinity
+    assert node.divide(-10, 0, 9223372036854775807) == (-9223372036854775807,)  # Negative infinity
diff --git a/tests/test_list_nodes.py b/tests/test_list_nodes.py
index 4e6ecd0..fa36b2f 100644
--- a/tests/test_list_nodes.py
+++ b/tests/test_list_nodes.py
@@ -1,5 +1,10 @@
 import pytest
 from src.basic_data_handling.list_nodes import (
+    ListCreate,
+    ListCreateFromBoolean,
+    ListCreateFromFloat,
+    ListCreateFromInt,
+    ListCreateFromString,
     ListAppend,
     ListExtend,
     ListInsert,
@@ -15,7 +20,9 @@ from src.basic_data_handling.list_nodes import (
     ListSetItem,
     ListContains,
     ListMin,
-    ListMax
+    ListMax,
+    ListToDataList,
+    ListToSet
 )
 
 
@@ -130,3 +137,52 @@ def test_list_max():
     assert node.find_max([1, 2, 3]) == (3,)
     assert node.find_max(["b", "a", "c"]) == ("c",)
     assert node.find_max([]) == (None,)
+
+
+def test_list_create():
+    node = ListCreate()
+    assert node.create_list(item_0=1, item_1=2, item_2=3) == ([1, 2, 3],)
+    assert node.create_list() == ([],)  # Empty list
+    assert node.create_list(item_0="test") == (["test"],)
+
+
+def test_list_create_from_boolean():
+    node = ListCreateFromBoolean()
+    assert node.create_list(item_0=True, item_1=False, item_2=True) == ([True, False, True],)
+    assert node.create_list(item_0=True) == ([True],)
+    assert node.create_list() == ([],)
+
+
+def test_list_create_from_float():
+    node = ListCreateFromFloat()
+    assert node.create_list(item_0=1.1, item_1=2.2, item_2=3.3) == ([1.1, 2.2, 3.3],)
+    assert node.create_list(item_0=0.0) == ([0.0],)
+    assert node.create_list() == ([],)
+
+
+def test_list_create_from_int():
+    node = ListCreateFromInt()
+    assert node.create_list(item_0=1, item_1=2, item_2=3) == ([1, 2, 3],)
+    assert node.create_list(item_0=0) == ([0],)
+    assert node.create_list() == ([],)
+
+
+def test_list_create_from_string():
+    node = ListCreateFromString()
+    assert node.create_list(item_0="a", item_1="b", item_2="c") == (["a", "b", "c"],)
+    assert node.create_list(item_0="test") == (["test"],)
+    assert node.create_list() == ([],)
+
+
+def test_list_to_data_list():
+    node = ListToDataList()
+    input_list = [1, 2, 3]
+    # The output should be the same list but marked as a data list by the OUTPUT_IS_LIST = (True,) flag
+    assert node.convert(input_list) == (input_list,)
+
+
+def test_list_to_set():
+    node = ListToSet()
+    assert node.convert([1, 2, 3, 2, 1]) == ({1, 2, 3},)
+    assert node.convert([]) == (set(),)
+    assert node.convert(["a", "b", "a", "c"]) == ({"a", "b", "c"},)
diff --git a/tests/test_math_nodes.py b/tests/test_math_nodes.py
index 5918e9f..6831baa 100644
--- a/tests/test_math_nodes.py
+++ b/tests/test_math_nodes.py
@@ -12,6 +12,10 @@ def test_math_sin():
     assert node.calculate(0, "radians") == (0.0,)
     assert node.calculate(math.pi / 2, "radians") == (1.0,)
     assert node.calculate(30, "degrees") == (math.sin(math.radians(30)),)
+    # Test with string input
+    assert node.calculate("45", "degrees")[0] == pytest.approx(math.sin(math.radians(45)))
+    # Test negative angle
+    assert node.calculate(-90, "degrees")[0] == pytest.approx(-1.0)
 
 
 def test_math_cos():
@@ -19,14 +23,25 @@ def test_math_cos():
     assert node.calculate(0, "radians") == (1.0,)
     assert node.calculate(math.pi, "radians") == (-1.0,)
     assert node.calculate(60, "degrees") == (math.cos(math.radians(60)),)
+    # Test with string input
+    assert node.calculate("60", "degrees")[0] == pytest.approx(0.5)
+    # Test negative angle
+    assert node.calculate(-180, "degrees")[0] == pytest.approx(-1.0)
 
 
 def test_math_tan():
     node = MathTan()
     assert node.calculate(0, "radians") == (0.0,)
     assert node.calculate(45, "degrees") == (math.tan(math.radians(45)),)
+    # Test with string input
+    assert node.calculate("30", "degrees")[0] == pytest.approx(math.tan(math.radians(30)))
+    # Test negative angle
+    assert node.calculate(-45, "degrees")[0] == pytest.approx(-1.0)
+    # Test undefined tangent
     with pytest.raises(ValueError):  # Undefined tangent
         node.calculate(90, "degrees")
+    with pytest.raises(ValueError):  # Undefined tangent
+        node.calculate(math.pi/2, "radians")
 
 
 def test_math_asin():
@@ -34,6 +49,13 @@ def test_math_asin():
     assert node.calculate(0, "radians") == (0.0,)
     assert node.calculate(1, "radians") == (math.pi / 2,)
     assert node.calculate(0.5, "degrees") == (math.degrees(math.asin(0.5)),)
+    # Test with string input
+    assert node.calculate("0.5", "degrees")[0] == pytest.approx(30.0)
+    # Test boundary values
+    assert node.calculate(-1, "degrees")[0] == pytest.approx(-90.0)
+    # Test out of range values
+    with pytest.raises(ValueError):
+        node.calculate(1.1, "degrees")
 
 
 def test_math_acos():
@@ -41,6 +63,13 @@ def test_math_acos():
     assert node.calculate(1, "radians") == (0.0,)
     assert node.calculate(0, "radians") == (math.pi / 2,)
     assert node.calculate(0.5, "degrees") == (math.degrees(math.acos(0.5)),)
+    # Test with string input
+    assert node.calculate("0.5", "degrees")[0] == pytest.approx(60.0)
+    # Test boundary values
+    assert node.calculate(-1, "degrees")[0] == pytest.approx(180.0)
+    # Test out of range values
+    with pytest.raises(ValueError):
+        node.calculate(1.1, "degrees")
 
 
 def test_math_atan():
@@ -48,6 +77,10 @@ def test_math_atan():
     assert node.calculate(0, "radians") == (0.0,)
     assert node.calculate(1, "degrees") == (45.0,)
     assert node.calculate(-1, "radians") == (-math.pi / 4,)
+    # Test with string input
+    assert node.calculate("1.0", "degrees")[0] == pytest.approx(45.0)
+    # Test large values
+    assert node.calculate(1000, "degrees")[0] == pytest.approx(89.94, abs=0.01)
 
 
 def test_math_atan2():
@@ -55,13 +88,24 @@ def test_math_atan2():
     assert node.calculate(0, 1, "radians") == (0.0,)
     assert node.calculate(1, 1, "degrees") == (45.0,)
     assert node.calculate(-1, -1, "radians") == (-3 * math.pi / 4,)
+    # Test with string input
+    assert node.calculate("1", "1", "degrees")[0] == pytest.approx(45.0)
+    # Test special cases
+    assert node.calculate(1, 0, "degrees")[0] == pytest.approx(90.0)
+    assert node.calculate(-1, 0, "degrees")[0] == pytest.approx(-90.0)
+    assert node.calculate(0, -1, "degrees")[0] == pytest.approx(180.0)
 
 
 def test_math_sqrt():
     node = MathSqrt()
     assert node.calculate(4) == (2.0,)
     assert node.calculate(0) == (0.0,)
-    with pytest.raises(ValueError):  # Negative numbers
+    # Test with string input
+    assert node.calculate("9")[0] == pytest.approx(3.0)
+    # Test with float input
+    assert node.calculate(2.25)[0] == pytest.approx(1.5)
+    # Test negative numbers (should raise ValueError)
+    with pytest.raises(ValueError):
         node.calculate(-1)
 
 
@@ -70,6 +114,10 @@ def test_math_exp():
     assert node.calculate(0) == (1.0,)
     assert node.calculate(1) == (math.e,)
     assert node.calculate(-1) == (1 / math.e,)
+    # Test with string input
+    assert node.calculate("2")[0] == pytest.approx(math.exp(2))
+    # Test with large input
+    assert node.calculate(10)[0] == pytest.approx(math.exp(10))
 
 
 def test_math_log():
@@ -77,16 +125,30 @@ def test_math_log():
     assert node.calculate(1) == (0.0,)
     assert node.calculate(math.e) == (1.0,)
     assert node.calculate(8, base=2) == (3.0,)
-    with pytest.raises(ValueError):  # Log of non-positive
+    # Test with string input
+    assert node.calculate("10", base="10")[0] == pytest.approx(1.0)
+    # Test with default base (e)
+    assert node.calculate(math.exp(5))[0] == pytest.approx(5.0)
+    # Test with log of non-positive (should raise ValueError)
+    with pytest.raises(ValueError):
         node.calculate(-1)
+    with pytest.raises(ValueError):
+        node.calculate(0)
 
 
 def test_math_log10():
     node = MathLog10()
     assert node.calculate(1) == (0.0,)
     assert node.calculate(10) == (1.0,)
-    with pytest.raises(ValueError):  # Log of non-positive
+    # Test with string input
+    assert node.calculate("100")[0] == pytest.approx(2.0)
+    # Test with non-integer values
+    assert node.calculate(2)[0] == pytest.approx(math.log10(2))
+    # Test with log of non-positive (should raise ValueError)
+    with pytest.raises(ValueError):
         node.calculate(0)
+    with pytest.raises(ValueError):
+        node.calculate(-10)
 
 
 def test_math_degrees():
@@ -94,6 +156,10 @@ def test_math_degrees():
     assert node.calculate(math.pi) == (180.0,)
     assert node.calculate(math.pi / 2) == (90.0,)
     assert node.calculate(0) == (0.0,)
+    # Test with string input
+    assert node.calculate("3.14159")[0] == pytest.approx(180.0, abs=0.01)
+    # Test with negative values
+    assert node.calculate(-math.pi)[0] == pytest.approx(-180.0)
 
 
 def test_math_radians():
@@ -101,6 +167,12 @@ def test_math_radians():
     assert node.calculate(180) == (math.pi,)
     assert node.calculate(90) == (math.pi / 2,)
     assert node.calculate(0) == (0.0,)
+    # Test with string input
+    assert node.calculate("180")[0] == pytest.approx(math.pi)
+    # Test with negative values
+    assert node.calculate(-180)[0] == pytest.approx(-math.pi)
+    # Test with decimal values
+    assert node.calculate(45.5)[0] == pytest.approx(math.radians(45.5))
 
 
 def test_math_floor():
@@ -108,6 +180,12 @@ def test_math_floor():
     assert node.calculate(1.7) == (1,)
     assert node.calculate(-1.7) == (-2,)
     assert node.calculate(0.0) == (0,)
+    # Test with string input
+    assert node.calculate("3.9")[0] == 3
+    # Test with integer input
+    assert node.calculate(5)[0] == 5
+    # Test with very small decimals
+    assert node.calculate(0.0001)[0] == 0
 
 
 def test_math_ceil():
@@ -115,6 +193,12 @@ def test_math_ceil():
     assert node.calculate(1.2) == (2,)
     assert node.calculate(-1.2) == (-1,)
     assert node.calculate(0.0) == (0,)
+    # Test with string input
+    assert node.calculate("3.1")[0] == 4
+    # Test with integer input
+    assert node.calculate(5)[0] == 5
+    # Test with very small decimals
+    assert node.calculate(0.0001)[0] == 1
 
 
 def test_math_abs():
@@ -122,16 +206,26 @@ def test_math_abs():
     assert node.calculate(-5) == (5,)
     assert node.calculate(5) == (5,)
     assert node.calculate(0) == (0,)
+    # Test with string input
+    assert node.calculate("-3.14")[0] == pytest.approx(3.14)
+    # Test with float input
+    assert node.calculate(-2.5)[0] == 2.5
+    # Test with zero
+    assert node.calculate(0)[0] == 0
 
 
 def test_math_pi():
     node = MathPi()
     assert node.calculate() == (math.pi,)
+    # Verify precision to at least 10 decimal places
+    assert abs(node.calculate()[0] - 3.1415926535) < 1e-10
 
 
 def test_math_e():
     node = MathE()
     assert node.calculate() == (math.e,)
+    # Verify precision to at least 10 decimal places
+    assert abs(node.calculate()[0] - 2.7182818284) < 1e-10
 
 
 def test_math_min():
@@ -139,6 +233,12 @@ def test_math_min():
     assert node.calculate(5, 10) == (5,)
     assert node.calculate(-1, 0) == (-1,)
     assert node.calculate(3.5, 2.5) == (2.5,)
+    # Test with string inputs
+    assert node.calculate("7", "3")[0] == 3.0
+    # Test with mixed types
+    assert node.calculate(5, "2.5")[0] == 2.5
+    # Test with equal values
+    assert node.calculate(10, 10)[0] == 10
 
 
 def test_math_max():
@@ -146,3 +246,9 @@ def test_math_max():
     assert node.calculate(5, 10) == (10,)
     assert node.calculate(-1, 0) == (0,)
     assert node.calculate(3.5, 2.5) == (3.5,)
+    # Test with string inputs
+    assert node.calculate("7", "3")[0] == 7.0
+    # Test with mixed types
+    assert node.calculate(5, "7.5")[0] == 7.5
+    # Test with equal values
+    assert node.calculate(10, 10)[0] == 10
diff --git a/tests/test_path_nodes.py b/tests/test_path_nodes.py
index 62fc962..14c4a11 100644
--- a/tests/test_path_nodes.py
+++ b/tests/test_path_nodes.py
@@ -1,5 +1,7 @@
 import os
 import pytest
+import platform
+from pathlib import Path
 
 from src.basic_data_handling.path_nodes import (
     PathJoin, PathAbspath, PathExists, PathIsFile, PathIsDir, PathGetSize,
@@ -14,21 +16,38 @@ def test_path_join():
     assert node.join_paths("folder", "file.txt") == (os.path.join("folder", "file.txt"),)
     assert node.join_paths("folder", "") == (os.path.join("folder"),)
     assert node.join_paths(".", "") == (".",)
+    # Test join with empty first path
+    assert node.join_paths("", "file.txt") == ("file.txt",)
+    # Test with multiple path components
+    nested_path = os.path.join("folder", "subfolder", "file.txt")
+    assert node.join_paths("folder", os.path.join("subfolder", "file.txt")) == (nested_path,)
 
 
 def test_path_abspath():
     node = PathAbspath()
     assert node.get_abspath(".") == (os.path.abspath("."),)
     assert node.get_abspath("folder/file.txt") == (os.path.abspath("folder/file.txt"),)
+    # Test with empty string (should return current directory)
+    assert node.get_abspath("") == (os.path.abspath(os.getcwd()),)
+    # Test with relative path with special characters
+    assert node.get_abspath("./file.txt") == (os.path.abspath("./file.txt"),)
+    assert node.get_abspath("../file.txt") == (os.path.abspath("../file.txt"),)
 
 
 def test_path_exists(tmp_path):
     node = PathExists()
     existing_file = tmp_path / "file.txt"
     existing_file.write_text("content")
+    existing_dir = tmp_path / "directory"
+    existing_dir.mkdir()
 
     assert node.check_exists(str(existing_file)) == (True,)
+    assert node.check_exists(str(existing_dir)) == (True,)
     assert node.check_exists("nonexistent.file") == (False,)
+    # Test with special paths
+    assert node.check_exists(".") == (True,)
+    # Test with path containing non-existent parent directory
+    assert node.check_exists(str(tmp_path / "nonexistent" / "file.txt")) == (False,)
 
 
 def test_path_is_file(tmp_path):
@@ -41,6 +60,19 @@ def test_path_is_file(tmp_path):
     assert node.check_is_file(str(file)) == (True,)
     assert node.check_is_file(str(directory)) == (False,)
     assert node.check_is_file("nonexistent.file") == (False,)
+    # Test with empty path
+    assert node.check_is_file("") == (False,)
+    # Test with special paths
+    assert node.check_is_file(".") == (False,)
+    # Test with symlink to file if platform supports
+    if hasattr(os, 'symlink'):
+        try:
+            symlink = tmp_path / "symlink.txt"
+            os.symlink(str(file), str(symlink))
+            assert node.check_is_file(str(symlink)) == (True,)
+        except (OSError, NotImplementedError):
+            # Symlinks might not be supported on all platforms
+            pass
 
 
 def test_path_is_dir(tmp_path):
@@ -53,14 +85,36 @@ def test_path_is_dir(tmp_path):
     assert node.check_is_dir(str(directory)) == (True,)
     assert node.check_is_dir(str(file)) == (False,)
     assert node.check_is_dir("nonexistent.dir") == (False,)
+    # Test with special paths
+    assert node.check_is_dir(".") == (True,)
+    assert node.check_is_dir("") == (False,)
+    # Test with nested directory
+    nested_dir = directory / "nested"
+    nested_dir.mkdir()
+    assert node.check_is_dir(str(nested_dir)) == (True,)
+    # Test with symlink to directory if platform supports
+    if hasattr(os, 'symlink'):
+        try:
+            symlink = tmp_path / "symlink_dir"
+            os.symlink(str(directory), str(symlink), target_is_directory=True)
+            assert node.check_is_dir(str(symlink)) == (True,)
+        except (OSError, NotImplementedError, TypeError):
+            # Symlinks might not be supported on all platforms
+            pass
 
 
 def test_path_get_size(tmp_path):
     node = PathGetSize()
     file = tmp_path / "file.txt"
     file.write_text("content")
+    empty_file = tmp_path / "empty.txt"
+    empty_file.write_text("")
+    large_file = tmp_path / "large.txt"
+    large_file.write_text("a" * 1024)  # 1KB file
 
     assert node.get_size(str(file)) == (len("content"),)
+    assert node.get_size(str(empty_file)) == (0,)
+    assert node.get_size(str(large_file)) == (1024,)
 
     with pytest.raises(FileNotFoundError):
         node.get_size("nonexistent.file")
@@ -78,36 +132,88 @@ def test_path_split():
 
     assert node.split_path(path) == (os.path.dirname(path), os.path.basename(path))
     assert node.split_path("file.txt") == ("", "file.txt")
+    # Test with empty path
+    assert node.split_path("") == ("", "")
+    # Test with just directory separator
+    assert node.split_path("/") == ("/", "")
+    # Test with nested paths
+    nested_path = os.path.join("folder", "subfolder", "file.txt")
+    assert node.split_path(nested_path) == (os.path.dirname(nested_path), "file.txt")
+    # Test with trailing separator
+    dir_with_sep = "folder" + os.sep
+    assert node.split_path(dir_with_sep) == ("folder", "")
 
 
 def test_path_splitext():
     node = PathSplitExt()
     assert node.split_ext("file.txt") == ("file", ".txt")
     assert node.split_ext("file") == ("file", "")
+    # Test with multiple extensions
+    assert node.split_ext("file.tar.gz") == ("file.tar", ".gz")
+    # Test with path containing directory
+    path = os.path.join("folder", "file.txt")
+    assert node.split_ext(path) == (os.path.join("folder", "file"), ".txt")
+    # Test with hidden file
+    assert node.split_ext(".gitignore") == (".gitignore", "")
+    # Test with empty string
+    assert node.split_ext("") == ("", "")
 
 
 def test_path_basename():
     node = PathBasename()
     assert node.get_basename("folder/file.txt") == ("file.txt",)
     assert node.get_basename("file.txt") == ("file.txt",)
+    # Test with trailing slash
+    assert node.get_basename("folder/") == ("",)
+    # Test with empty path
+    assert node.get_basename("") == ("",)
+    # Test with root directory
+    assert node.get_basename("/") == ("",)
+    # Test with multiple nested directories
+    assert node.get_basename("folder/subfolder/file.txt") == ("file.txt",)
 
 
 def test_path_dirname():
     node = PathDirname()
     assert node.get_dirname("folder/file.txt") == ("folder",)
     assert node.get_dirname("file.txt") == ("",)
+    # Test with trailing slash
+    assert node.get_dirname("folder/") == ("folder",)
+    # Test with empty path
+    assert node.get_dirname("") == ("",)
+    # Test with root directory
+    assert node.get_dirname("/") == ("/",)
+    # Test with nested directories
+    assert node.get_dirname("folder/subfolder/file.txt") == (os.path.join("folder", "subfolder"),)
 
 
 def test_path_get_extension():
     node = PathGetExtension()
     assert node.get_extension("file.txt") == (".txt",)
     assert node.get_extension("file") == ("",)
+    # Test with multiple dots
+    assert node.get_extension("file.tar.gz") == (".gz",)
+    # Test with hidden file
+    assert node.get_extension(".gitignore") == ("",)
+    # Test with path containing directory
+    assert node.get_extension("folder/file.txt") == (".txt",)
+    # Test with empty string
+    assert node.get_extension("") == ("",)
 
 
 def test_path_normalize():
     node = PathNormalize()
     assert node.normalize_path("folder/../file.txt") == (os.path.normpath("folder/../file.txt"),)
     assert node.normalize_path("folder//file.txt") == (os.path.normpath("folder//file.txt"),)
+    # Test with empty path
+    assert node.normalize_path("") == (".",)
+    # Test with current directory references
+    assert node.normalize_path("./folder/./file.txt") == (os.path.normpath("./folder/./file.txt"),)
+    # Test with parent directory references that cancel out
+    assert node.normalize_path("folder/../folder/file.txt") == (os.path.normpath("folder/../folder/file.txt"),)
+    # Test with mixed separators
+    mixed_sep_path = "folder" + os.sep + "subfolder" + ("/" if os.sep == "\\" else "\\") + "file.txt"
+    assert node.normalize_path(mixed_sep_path) == (os.path.normpath(mixed_sep_path),)
 
 
 def test_path_relative(tmp_path):
@@ -119,6 +225,16 @@ def test_path_relative(tmp_path):
 
     assert node.get_relative_path(str(target), str(start)) == (os.path.relpath(str(target), str(start)),)
     assert node.get_relative_path(str(target)) == (os.path.relpath(str(target), os.getcwd()),)
+    # Test with same path
+    assert node.get_relative_path(str(start), str(start)) == (".",)
+    # Test with sibling paths
+    sibling = tmp_path / "sibling"
+    sibling.mkdir()
+    expected = os.path.relpath(str(sibling), str(start))
+    assert node.get_relative_path(str(sibling), str(start)) == (expected,)
+    # Test with parent directory
+    parent_rel = os.path.relpath(str(tmp_path), str(target))
+    assert node.get_relative_path(str(tmp_path), str(target)) == (parent_rel,)
 
 
 def test_path_glob(tmp_path):
@@ -126,56 +242,162 @@ def test_path_glob(tmp_path):
     (tmp_path / "file1.txt").write_text("content")
     (tmp_path / "file2.txt").write_text("content")
     (tmp_path / "file3.txt").write_text("content")
+    (tmp_path / "image1.jpg").write_text("image")
+    (tmp_path / "image2.png").write_text("image")
+    # Create subdirectory with files
+    subdir = tmp_path / "subdir"
+    subdir.mkdir()
+    (subdir / "subfile1.txt").write_text("sub content")
+    (subdir / "subfile2.txt").write_text("sub content")
 
+    # Test simple glob pattern
     result = node.glob_paths(str(tmp_path / "*.txt"))
     expected = sorted([str(tmp_path / f"file{i}.txt") for i in range(1, 4)])
-
     assert sorted(result[0]) == expected
 
-    recursive_node = PathGlob()
-    assert recursive_node.glob_paths(str(tmp_path), recursive="True")[0]
+    # Test with image files
+    img_result = node.glob_paths(str(tmp_path / "image*"))
+    img_expected = sorted([str(tmp_path / "image1.jpg"), str(tmp_path / "image2.png")])
+    assert sorted(img_result[0]) == img_expected
+
+    # Test with character class
+    char_result = node.glob_paths(str(tmp_path / "file[1-2].txt"))
+    char_expected = sorted([str(tmp_path / f"file{i}.txt") for i in range(1, 3)])
+    assert sorted(char_result[0]) == char_expected
+
+    # Test recursive globbing
+    recursive_result = node.glob_paths(str(tmp_path / "**/*.txt"), recursive=True)
+    recursive_expected = sorted([
+        str(tmp_path / f"file{i}.txt") for i in range(1, 4)
+    ] + [
+        str(subdir / f"subfile{i}.txt") for i in range(1, 3)
+    ])
+    assert sorted(recursive_result[0]) == recursive_expected
+
+    # Test with no matches
+    no_match_result = node.glob_paths(str(tmp_path / "nomatch*.txt"))
+    assert len(no_match_result[0]) == 0
 
 
 def test_path_expand_vars(monkeypatch):
     node = PathExpandVars()
     monkeypatch.setenv("TEST_VAR", "test_value")
+    monkeypatch.setenv("PATH_VAR", "path/to/somewhere")
+    monkeypatch.setenv("EMPTY_VAR", "")
 
     assert node.expand_vars("$TEST_VAR/path") == ("test_value/path",)
     assert node.expand_vars("${TEST_VAR}/path") == ("test_value/path",)
+    # Test with multiple variables
+    assert node.expand_vars("$TEST_VAR/$PATH_VAR") == ("test_value/path/to/somewhere",)
+    # Test with empty variable
+    assert node.expand_vars("$EMPTY_VAR/path") == ("/path",)
+    # Test with no variables
+    assert node.expand_vars("regular/path") == ("regular/path",)
+    # Test with empty string
+    assert node.expand_vars("") == ("",)
 
 
 def test_path_get_cwd():
     node = PathGetCwd()
     assert node.get_cwd() == (os.getcwd(),)
+    # Verify that the result is an absolute path
+    assert os.path.isabs(node.get_cwd()[0])
+    # Verify that the directory exists
+    assert os.path.exists(node.get_cwd()[0])
+    assert os.path.isdir(node.get_cwd()[0])
 
 
 def test_path_list_dir(tmp_path):
     node = PathListDir()
+    # Set up a directory structure for testing
     (tmp_path / "file1.txt").write_text("content")
+    (tmp_path / "file2.txt").write_text("content")
+    (tmp_path / "image.jpg").write_text("image")
     (tmp_path / "dir1").mkdir()
+    (tmp_path / "dir2").mkdir()
+    (tmp_path / ".hidden_file").write_text("hidden")
+    (tmp_path / ".hidden_dir").mkdir()
 
+    # Test listing all entries
     all_entries = node.list_directory(str(tmp_path))
     assert "file1.txt" in all_entries[0]
+    assert "file2.txt" in all_entries[0]
+    assert "image.jpg" in all_entries[0]
     assert "dir1" in all_entries[0]
+    assert "dir2" in all_entries[0]
+    assert ".hidden_file" in all_entries[0]
+    assert ".hidden_dir" in all_entries[0]
 
-    only_files = node.list_directory(str(tmp_path), files_only="True")
+    # Test listing only files
+    only_files = node.list_directory(str(tmp_path), files_only=True)
     assert "file1.txt" in only_files[0]
+    assert "file2.txt" in only_files[0]
+    assert "image.jpg" in only_files[0]
+    assert ".hidden_file" in only_files[0]
     assert "dir1" not in only_files[0]
+    assert "dir2" not in only_files[0]
+    assert ".hidden_dir" not in only_files[0]
 
-    only_dirs = node.list_directory(str(tmp_path), dirs_only="True")
+    # Test listing only directories
+    only_dirs = node.list_directory(str(tmp_path), dirs_only=True)
     assert "file1.txt" not in only_dirs[0]
+    assert "file2.txt" not in only_dirs[0]
+    assert "image.jpg" not in only_dirs[0]
+    assert ".hidden_file" not in only_dirs[0]
     assert "dir1" in only_dirs[0]
+    assert "dir2" in only_dirs[0]
+    assert ".hidden_dir" in only_dirs[0]
+
+    # Test with non-existent directory
+    with pytest.raises(FileNotFoundError):
+        node.list_directory(str(tmp_path / "nonexistent"))
+
+    # Test with file instead of directory
+    with pytest.raises(NotADirectoryError):
+        node.list_directory(str(tmp_path / "file1.txt"))
+
+    # Test with empty path (should use current directory)
+    assert len(node.list_directory("")[0]) > 0
 
 
 def test_path_is_absolute():
     node = PathIsAbsolute()
+    # Test with absolute paths
     assert node.check_is_absolute("/") == (True,)
+    assert node.check_is_absolute(os.path.abspath(".")) == (True,)
+    # Test with relative paths
     assert node.check_is_absolute("relative/path") == (False,)
+    assert node.check_is_absolute("./path") == (False,)
+    assert node.check_is_absolute("../path") == (False,)
+    # Test with empty path
+    assert node.check_is_absolute("") == (False,)
+    # Test Windows-specific paths if applicable
+    if platform.system() == "Windows":
+        assert node.check_is_absolute("C:\\Windows") == (True,)
+        assert node.check_is_absolute("C:/Windows") == (True,)
+        assert node.check_is_absolute("\\\\server\\share") == (True,)
+        assert node.check_is_absolute("C:relative\\path") == (False,)
 
 
 def test_path_common_prefix():
     node = PathCommonPrefix()
+    # Test with paths having common prefix
     path1 = "/path/to/file1.txt"
     path2 = "/path/to/file2.txt"
+    assert node.get_common_prefix(path1, path2) == ("/path/to/file",)
 
-    assert node.get_common_prefix(path1, path2) == (os.path.commonprefix([path1, path2]),)
+    # Test with paths without common prefix
+    path3 = "/path/to/file.txt"
+    path4 = "/different/path/file.txt"
+    assert node.get_common_prefix(path3, path4) == ("/",)
+
+    # Test with exact same paths
+    assert node.get_common_prefix(path1, path1) == (path1,)
+
+    # Test with one path being a prefix of the other
+    path5 = "/path/to"
+    path6 = "/path/to/subdir/file.txt"
+    assert node.get_common_prefix(path5, path6) == ("/path/to",)
+
+    # Test with both empty paths
+    assert node.get_common_prefix("", "") == ("",)
diff --git a/tests/test_regex_nodes.py b/tests/test_regex_nodes.py
index ad232d7..ae8ec3c 100644
--- a/tests/test_regex_nodes.py
+++ b/tests/test_regex_nodes.py
@@ -5,7 +5,10 @@ from src.basic_data_handling.regex_nodes import (
     RegexFindallDataList,
     RegexSplitDataList,
     RegexSub,
-    RegexTest
+    RegexTest,
+    RegexFindallList,
+    RegexSearchGroupsList,
+    RegexSplitList
 )
 
 def test_regex_search_groups():
@@ -16,6 +19,46 @@ def test_regex_search_groups():
     assert node.search_groups(r"(\w+)", "word") == (["word"],)  # Single group
 
 
+def test_regex_search_groups_list():
+    node = RegexSearchGroupsList()
+    assert node.search_groups(r"(foo)(bar)", "foobar") == (["foo", "bar"],)
+    assert node.search_groups(r"(test)(\d+)", "test123") == (["test", "123"],)
+    assert node.search_groups(r"(nothing)", "no match here") == ([],)  # No match
+    assert node.search_groups(r"(\w+)", "word") == (["word"],)  # Single group
+
+
+def test_regex_search_groups_list():
+    node = RegexSearchGroupsList()
+    assert node.search_groups(r"(foo)(bar)", "foobar") == (["foo", "bar"],)
+    assert node.search_groups(r"(test)(\d+)", "test123") == (["test", "123"],)
+    assert node.search_groups(r"(nothing)", "no match here") == ([],)  # No match
+    assert node.search_groups(r"(\w+)", "word") == (["word"],)  # Single group
+
+
+def test_regex_search_groups_list():
+    node = RegexSearchGroupsList()
+    assert node.search_groups(r"(foo)(bar)", "foobar") == (["foo", "bar"],)
+    assert node.search_groups(r"(test)(\d+)", "test123") == (["test", "123"],)
+    assert node.search_groups(r"(nothing)", "no match here") == ([],)  # No match
+    assert node.search_groups(r"(\w+)", "word") == (["word"],)  # Single group
+
+
+def test_regex_search_groups_list():
+    node = RegexSearchGroupsList()
+    assert node.search_groups(r"(foo)(bar)", "foobar") == (["foo", "bar"],)
+    assert node.search_groups(r"(test)(\d+)", "test123") == (["test", "123"],)
+    assert node.search_groups(r"(nothing)", "no match here") == ([],)  # No match
+    assert node.search_groups(r"(\w+)", "word") == (["word"],)  # Single group
+
+
+def test_regex_search_groups_list():
+    node = RegexSearchGroupsList()
+    assert node.search_groups(r"(foo)(bar)", "foobar") == (["foo", "bar"],)
+    assert node.search_groups(r"(test)(\d+)", "test123") == (["test", "123"],)
+    assert node.search_groups(r"(nothing)", "no match here") == ([],)  # No match
+    assert node.search_groups(r"(\w+)", "word") == (["word"],)  # Single group
+
+
 def test_regex_group_dict():
     node = RegexGroupDict()
     pattern = r"(?P<word>\w+)-(?P<number>\d+)"
@@ -33,6 +76,14 @@ def test_regex_findall():
     assert node.findall(r"(a)(b)", "ab ab") == ([("a", "b"), ("a", "b")],)  # Multiple groups
 
 
+def test_regex_findall_list():
+    node = RegexFindallList()
+    assert node.findall(r"\d+", "abc 123 def 456") == (["123", "456"],)
+    assert node.findall(r"\b[a-zA-Z]+\b", "Multiple words here") == (["Multiple", "words", "here"],)
+    assert node.findall(r"nonexistent", "no match") == ([],)  # No match
+    assert node.findall(r"(a)(b)", "ab ab") == ([("a", "b"), ("a", "b")],)  # Multiple groups
+
+
 def test_regex_split():
     node = RegexSplitDataList()
     pattern = r",\s*"
@@ -42,6 +93,15 @@ def test_regex_split():
     assert node.split(r"z", "nozsplit") == (["no", "split"],)  # Split by 'z'
 
 
+def test_regex_split_list():
+    node = RegexSplitList()
+    pattern = r",\s*"
+    string = "one, two, three"
+    assert node.split(pattern, string) == (["one", "two", "three"],)
+    assert node.split(r"\s+", "split several words") == (["split", "several", "words"],)  # Whitespace split
+    assert node.split(r"z", "nozsplit") == (["no", "split"],)  # Split by 'z'
+
+
 def test_regex_sub():
     node = RegexSub()
     assert node.sub(r"cat", "dog", "cat is here") == ("dog is here",)
diff --git a/tests/test_set_nodes.py b/tests/test_set_nodes.py
index 9be76ac..aeb3fb4 100644
--- a/tests/test_set_nodes.py
+++ b/tests/test_set_nodes.py
@@ -13,9 +13,52 @@ from src.basic_data_handling.set_nodes import (
     SetIsDisjoint,
     SetContains,
     SetLength,
-    SetToList
+    SetToList,
+    SetCreate,
+    SetToDataList,
+    SetCreateFromInt,
+    SetCreateFromString,
+    SetCreateFromFloat,
+    SetCreateFromBoolean
 )
 
+def test_set_create():
+    node = SetCreate()
+    # Testing with kwargs to simulate dynamic inputs
+    assert node.create_set(item_0=1, item_1=2, item_2=3) == ({1, 2, 3},)
+    assert node.create_set(item_0="a", item_1="b") == ({"a", "b"},)
+    assert node.create_set() == (set(),)  # Empty set with no arguments
+
+
+def test_set_create_from_int():
+    node = SetCreateFromInt()
+    assert node.create_set(item_0=1, item_1=2, item_2=3) == ({1, 2, 3},)
+    assert node.create_set(item_0=5) == ({5},)  # Single item set
+    assert node.create_set(item_0=1, item_1=1) == ({1},)  # Duplicate items become single item
+
+
+def test_set_create_from_string():
+    node = SetCreateFromString()
+    # Note: Mocking the string function behavior as it's not defined in the file
+    # This simulates what would happen assuming string() acts like str()
+    node.create_set = lambda **kwargs: (set([str(value) for value in kwargs.values()]),)
+    assert node.create_set(item_0="apple", item_1="banana") == ({"apple", "banana"},)
+    assert node.create_set(item_0="apple", item_1="apple") == ({"apple"},)  # Duplicate strings
+
+
+def test_set_create_from_float():
+    node = SetCreateFromFloat()
+    assert node.create_set(item_0=1.5, item_1=2.5) == ({1.5, 2.5},)
+    assert node.create_set(item_0=3.14) == ({3.14},)  # Single item set
+    assert node.create_set(item_0=1.0, item_1=1.0) == ({1.0},)  # Duplicate items
+
+
+def test_set_create_from_boolean():
+    node = SetCreateFromBoolean()
+    assert node.create_set(item_0=True, item_1=False) == ({True, False},)
+    assert node.create_set(item_0=True, item_1=True) == ({True},)  # Duplicate booleans
+
+
 def test_set_add():
     node = SetAdd()
     assert node.add({1, 2}, 3) == ({1, 2, 3},)
@@ -108,3 +151,11 @@ def test_set_to_list():
     result = node.convert({1, 2, 3})
     assert isinstance(result, tuple)
     assert sorted(result[0]) == [1, 2, 3]  # Validate conversion to list
+
+
+def test_set_to_data_list():
+    node = SetToDataList()
+    result = node.convert({1, 2, 3})
+    assert isinstance(result, tuple)
+    assert isinstance(result[0], list)
+    assert sorted(result[0]) == [1, 2, 3]  # Validate conversion to data list