Update timestamp values in test_categorical_coerces_timestamp

Author: arthurlw

pandas/tests/io/parser/dtypes/test_categorical.py

@@ -274,10 +274,10 @@ def test_categorical_coerces_numeric(all_parsers):
 
 def test_categorical_coerces_timestamp(all_parsers):
     parser = all_parsers
-    dtype = {"b": CategoricalDtype([Timestamp("2014")])}
+    dtype = {"b": CategoricalDtype([Timestamp("2014-01-01 12:00:00")])}
 
-    data = "b\n2014-01-01\n2014-01-01"
-    expected = DataFrame({"b": Categorical([Timestamp("2014")] * 2)})
+    data = "b\n2014-01-01 12:00:00\n2014-01-01 12:00:00"
+    expected = DataFrame({"b": Categorical([Timestamp("2014-01-01 12:00:00")] * 2)})
 
     result = parser.read_csv(StringIO(data), dtype=dtype)
     tm.assert_frame_equal(result, expected)