Move import test to test_downstream

pandas/tests/test_base.py

@@ -1,6 +1,4 @@
-import builtins
 from datetime import datetime, timedelta
-from importlib import reload
 from io import StringIO
 import re
 import sys
@@ -1343,32 +1341,3 @@ def test_to_numpy_dtype(as_series):
     expected = np.array(['2000-01-01T05', '2001-01-01T05'],
                         dtype='M8[ns]')
     tm.assert_numpy_array_equal(result, expected)
-
-
-def test_missing_required_dependency(monkeypatch):
-    original_import = __import__
-
-    def mock_import_fail(name, *args, **kwargs):
-        if name == "numpy":
-            raise ImportError("cannot import name numpy")
-        elif name == "pytz":
-            raise ImportError("cannot import name some_dependency")
-        elif name == "dateutil":
-            raise ImportError("cannot import name some_other_dependency")
-        else:
-            return original_import(name, *args, **kwargs)
-
-    expected_msg = (
-        "Unable to import required dependencies:"
-        "\nnumpy: cannot import name numpy"
-        "\npytz: cannot import name some_dependency"
-        "\ndateutil: cannot import name some_other_dependency"
-    )
-
-    with monkeypatch.context() as m:
-        m.setattr(builtins, "__import__", mock_import_fail)
-        with pytest.raises(ImportError, match=expected_msg):
-            reload(pd)
-
-    # Final reload to ensure normal state of pandas
-    reload(pd)

pandas/tests/test_downstream.py

@@ -1,6 +1,7 @@
 """
 Testing that we work in the downstream packages
 """
+import builtins
 import importlib
 import subprocess
 import sys
@@ -131,3 +132,32 @@ def test_pyarrow(df):
     table = pyarrow.Table.from_pandas(df)
     result = table.to_pandas()
     tm.assert_frame_equal(result, df)
+
+
+def test_missing_required_dependency(monkeypatch):
+    original_import = __import__
+
+    def mock_import_fail(name, *args, **kwargs):
+        if name == "numpy":
+            raise ImportError("cannot import name numpy")
+        elif name == "pytz":
+            raise ImportError("cannot import name some_dependency")
+        elif name == "dateutil":
+            raise ImportError("cannot import name some_other_dependency")
+        else:
+            return original_import(name, *args, **kwargs)
+
+    expected_msg = (
+        "Unable to import required dependencies:"
+        "\nnumpy: cannot import name numpy"
+        "\npytz: cannot import name some_dependency"
+        "\ndateutil: cannot import name some_other_dependency"
+    )
+
+    import pandas as pd
+
+    with monkeypatch.context() as m:
+        m.setattr(builtins, "__import__", mock_import_fail)
+        with pytest.raises(ImportError, match=expected_msg):
+            importlib.reload(pd)
+