testing/gtest_mac.mm

   1 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #import "gtest_mac.h"
   6
   7 #include <string>
   8
   9 #include <gtest/internal/gtest-port.h>
  10 #include <gtest/internal/gtest-string.h>
  11 #include <gtest/gtest.h>
  12
  13 #ifdef GTEST_OS_MAC
  14
  15 #import <Foundation/Foundation.h>
  16
  17 namespace testing {
  18 namespace internal {
  19
  20 // Handles nil values for |obj| properly by using safe printing of %@ in
  21 // -stringWithFormat:.
  22 static inline const char* StringDescription(id<NSObject> obj) {
  23   return [[NSString stringWithFormat:@"%@", obj] UTF8String];
  24 }
  25
  26 // This overloaded version allows comparison between ObjC objects that conform
  27 // to the NSObject protocol. Used to implement {ASSERT|EXPECT}_EQ().
  28 GTEST_API_ AssertionResult CmpHelperNSEQ(const char* expected_expression,
  29                                          const char* actual_expression,
  30                                          id<NSObject> expected,
  31                                          id<NSObject> actual) {
  32   if (expected == actual || [expected isEqual:actual]) {
  33     return AssertionSuccess();
  34   }
  35   return EqFailure(expected_expression,
  36                    actual_expression,
  37                    std::string(StringDescription(expected)),
  38                    std::string(StringDescription(actual)),
  39                    false);
  40 }
  41
  42 // This overloaded version allows comparison between ObjC objects that conform
  43 // to the NSObject protocol. Used to implement {ASSERT|EXPECT}_NE().
  44 GTEST_API_ AssertionResult CmpHelperNSNE(const char* expected_expression,
  45                                          const char* actual_expression,
  46                                          id<NSObject> expected,
  47                                          id<NSObject> actual) {
  48   if (expected != actual && ![expected isEqual:actual]) {
  49     return AssertionSuccess();
  50   }
  51   Message msg;
  52   msg << "Expected: (" << expected_expression << ") != (" << actual_expression
  53       << "), actual: " << StringDescription(expected)
  54       << " vs " << StringDescription(actual);
  55   return AssertionFailure(msg);
  56 }
  57
  58 }  // namespace internal
  59 }  // namespace testing
  60
  61 #endif  // GTEST_OS_MAC