test: move new method to another file since it's unrelated to test re…

…sources

tests/helpers/__init__.py

@@ -1,3 +1,4 @@
+from ._assertions import assert_that_tables_are_close
 from ._resources import resolve_resource_path
 
-__all__ = ["resolve_resource_path"]
+__all__ = ["assert_that_tables_are_close", "resolve_resource_path"]

tests/helpers/_assertions.py

@@ -0,0 +1,24 @@
+import pytest
+from safeds.data.tabular.containers import Table
+
+
+def assert_that_tables_are_close(table1: Table, table2: Table) -> None:
+    """
+    Assert that two tables are almost equal.
+
+    Parameters
+    ----------
+    table1: Table
+        The first table.
+    table2: Table
+        The table to compare the first table to.
+    """
+    assert table1.schema == table2.schema
+    for column_name in table1.column_names:
+        assert table1.get_column(column_name).type == table2.get_column(column_name).type
+        assert table1.get_column(column_name).type.is_numeric()
+        assert table2.get_column(column_name).type.is_numeric()
+        for i in range(table1.number_of_rows):
+            entry_1 = table1.get_column(column_name).get_value(i)
+            entry_2 = table2.get_column(column_name).get_value(i)
+            assert entry_1 == pytest.approx(entry_2)

tests/helpers/_resources.py

@@ -1,9 +1,5 @@
 from pathlib import Path
 
-from _pytest.python_api import approx
-
-from src.safeds.data.tabular.containers import Table
-
 _resources_root = Path(__file__).parent / ".." / "resources"
 
 
@@ -22,25 +18,3 @@ def resolve_resource_path(resource_path: str | Path) -> str:
         The absolute path to the resource.
     """
     return str(_resources_root / resource_path)
-
-
-def check_that_tables_are_close(table1: Table, table2: Table) -> None:
-    """
-    Check that two tables are almost equal.
-
-    Parameters
-    ----------
-    table1: Table
-        The first table.
-    table2: Table
-        The table to compare the first table to.
-    """
-    assert table1.schema == table2.schema
-    for column_name in table1.column_names:
-        assert table1.get_column(column_name).type == table2.get_column(column_name).type
-        assert table1.get_column(column_name).type.is_numeric()
-        assert table2.get_column(column_name).type.is_numeric()
-        for i in range(table1.number_of_rows):
-            entry_1 = table1.get_column(column_name).get_value(i)
-            entry_2 = table2.get_column(column_name).get_value(i)
-            assert entry_1 == approx(entry_2)

tests/safeds/data/tabular/transformation/test_standard_scaler.py

@@ -3,7 +3,7 @@
 from safeds.data.tabular.transformation import StandardScaler
 from safeds.exceptions import TransformerNotFittedError, UnknownColumnNameError
 
-from tests.helpers._resources import check_that_tables_are_close
+from tests.helpers import assert_that_tables_are_close
 
 
 class TestFit:
@@ -216,7 +216,7 @@ def test_should_not_change_transformed_table(self) -> None:
             },
         )
 
-        check_that_tables_are_close(transformed_table, expected)
+        assert_that_tables_are_close(transformed_table, expected)
 
     def test_should_raise_if_not_fitted(self) -> None:
         table = Table(