TST: Fixed test failure

Author: aschade

pandas/core/internals.py

@@ -1051,7 +1051,7 @@ def f(m, v, i):
 
         return [self.make_block(new_values)]
 
-    def coerce_to_target_dtype(self, other):
+    def coerce_to_target_dtype(self, other, force_coericion=False):
         """
         coerce the current block to a dtype compat for other
         we will return a block, possibly object, and not raise
@@ -1067,7 +1067,7 @@ def coerce_to_target_dtype(self, other):
             return self
 
         if self.is_bool or is_object_dtype(dtype) or is_bool_dtype(dtype):
-            if is_float_dtype(dtype) or is_integer_dtype(dtype):
+            if force_coericion and is_float_dtype(dtype) or is_integer_dtype(dtype):
                 return self.astype(dtype)
             else:
                 return self.astype(object)
@@ -1351,7 +1351,7 @@ def eval(self, func, other, errors='raise', try_cast=False, mgr=None):
             values, values_mask, other, other_mask = self._try_coerce_args(
                 transf(values), other)
         except TypeError:
-            block = self.coerce_to_target_dtype(orig_other)
+            block = self.coerce_to_target_dtype(orig_other, True)
             return block.eval(func, orig_other,
                               errors=errors,
                               try_cast=try_cast, mgr=mgr)