TST: add vb_suite test for reindex with upcasting

Author: stephenwlin

vb_suite/frame_methods.py

@@ -54,6 +54,19 @@
 frame_reindex_both_axes_ix = Benchmark('df.ix[idx, idx]', setup,
                                        start_date=datetime(2011, 1, 1))
 
+#----------------------------------------------------------------------
+# reindex with upcasts
+setup = common_setup + """
+df=DataFrame(dict([(c, {
+        0: randint(0, 2, 1000).astype(np.bool_),
+        1: randint(0, 1000, 1000).astype(np.int16),
+        2: randint(0, 1000, 1000).astype(np.int32),
+        3: randint(0, 1000, 1000).astype(np.int64)
+    }[randint(0, 4)]) for c in range(1000)]))
+"""
+
+frame_reindex_upcast = Benchmark('df.reindex(permutation(range(1200)))', setup)
+
 #----------------------------------------------------------------------
 # boolean indexing
 
@@ -71,6 +84,7 @@
 
 setup = common_setup + """
 df = DataFrame(randn(10000, 100))
+
 def f():
     if hasattr(df, '_item_cache'):
         df._item_cache.clear()

vb_suite/pandas_vb_common.py

@@ -2,6 +2,8 @@
 from pandas.util.testing import rands
 from datetime import timedelta
 from numpy.random import randn
+from numpy.random import randint
+from numpy.random import permutation
 import pandas.util.testing as tm
 import random
 import numpy as np