add integration test integer columns only

tests/integration/constraints/test_tabular.py

@@ -5,6 +5,39 @@
 from sdv.single_table import GaussianCopulaSynthesizer
 
 
+def test_fixed_combinations_integers():
+    """Test that FixedCombinations constraint works with integer columns."""
+    data = pd.DataFrame({
+        'A': [1, 2, 3, 1, 2, 1],
+        'B': [10, 20, 30, 10, 20, 10],
+    })
+    metadata = SingleTableMetadata().load_from_dict({
+        'columns': {
+            'A': {'sdtype': 'categorical'},
+            'B': {'sdtype': 'categorical'},
+        }
+    })
+
+    synthesizer = GaussianCopulaSynthesizer(metadata)
+    my_constraint = {
+        'constraint_class': 'FixedCombinations',
+        'constraint_parameters': {'column_names': ['A', 'B']},
+    }
+    synthesizer.add_constraints(constraints=[my_constraint])
+
+    # Run
+    synthesizer.fit(data)
+    synthetic_data = synthesizer.sample(1000)
+
+    # Assert
+    assert len(synthetic_data) == 1000
+    pd.testing.assert_frame_equal(
+        synthetic_data.drop_duplicates(ignore_index=True),
+        data.drop_duplicates(ignore_index=True),
+        check_like=True,
+    )
+
+
 def test_fixed_combinations_with_nans():
     """Test that FixedCombinations constraint works with NaNs."""
     # Setup