TST- Fixing issue with test_parquet test unexpectedly passing (pandas-dev#24480)

* Fixing issue with test_parquet passing

Author: RjLi13

ci/deps/azure-macos-35.yaml

@@ -13,6 +13,8 @@ dependencies:
   - numexpr
   - numpy=1.12.0
   - openpyxl=2.5.5
+  - pyarrow
+  - fastparquet
   - pytables
   - python=3.5*
   - pytz

pandas/tests/io/test_parquet.py

@@ -8,7 +8,7 @@
 
 import numpy as np
 import pandas as pd
-from pandas.compat import PY3, is_platform_windows, is_platform_mac
+from pandas.compat import PY3
 from pandas.io.parquet import (to_parquet, read_parquet, get_engine,
                                PyArrowImpl, FastParquetImpl)
 from pandas.util import testing as tm
@@ -200,8 +200,6 @@ def test_options_get_engine(fp, pa):
         assert isinstance(get_engine('fastparquet'), FastParquetImpl)
 
 
-@pytest.mark.xfail(is_platform_windows() or is_platform_mac(),
-                   reason="reading pa metadata failing on Windows/mac")
 def test_cross_engine_pa_fp(df_cross_compat, pa, fp):
     # cross-compat with differing reading/writing engines