test: Fix engine switching reset (#2729)

Author: LeonLuttenberger

tests/unit/test_distributed.py

@@ -23,7 +23,8 @@ def wr() -> Iterator[ModuleType]:
     yield reload(awswrangler)
 
     # Reset for future tests
-    awswrangler.engine.register()
+    awswrangler.engine.set(awswrangler.engine.get_installed().value)
+    awswrangler.memory_format.set(awswrangler.memory_format.get_installed().value)
 
 
 @pytest.mark.skipif(condition=not is_ray_modin, reason="ray not available")
@@ -71,22 +72,20 @@ def test_engine_python_without_ray_installed(wr: ModuleType) -> None:
 
 
 @pytest.mark.skipif(condition=not is_ray_modin, reason="ray not available")
-def test_engine_switch() -> None:
+def test_engine_switch(wr: ModuleType) -> None:
     from modin.pandas import DataFrame as ModinDataFrame
     from pandas import DataFrame as PandasDataFrame
 
-    import awswrangler as wr2
+    assert wr.engine.get_installed() == wr.EngineEnum.RAY
+    assert wr.memory_format.get_installed() == wr.MemoryFormatEnum.MODIN
 
-    assert wr2.engine.get_installed() == wr2.EngineEnum.RAY
-    assert wr2.memory_format.get_installed() == wr2.MemoryFormatEnum.MODIN
+    assert wr.engine.get() == wr.EngineEnum.RAY
+    assert wr.memory_format.get() == wr.MemoryFormatEnum.MODIN
+    assert wr.pandas.DataFrame == ModinDataFrame
 
-    assert wr2.engine.get() == wr2.EngineEnum.RAY
-    assert wr2.memory_format.get() == wr2.MemoryFormatEnum.MODIN
-    assert wr2.pandas.DataFrame == ModinDataFrame
+    wr.engine.set("python")
+    wr.memory_format.set("pandas")
 
-    wr2.engine.set("python")
-    wr2.memory_format.set("pandas")
-
-    assert wr2.engine.get() == wr2.EngineEnum.PYTHON
-    assert wr2.memory_format.get() == wr2.MemoryFormatEnum.PANDAS
-    assert wr2.pandas.DataFrame == PandasDataFrame
+    assert wr.engine.get() == wr.EngineEnum.PYTHON
+    assert wr.memory_format.get() == wr.MemoryFormatEnum.PANDAS
+    assert wr.pandas.DataFrame == PandasDataFrame