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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import "chrome/browser/cocoa/objc_method_swizzle.h"
#include "base/scoped_nsobject.h"
#include "testing/gtest/include/gtest/gtest.h"
@interface ObjcMethodSwizzleTest : NSObject
- (id)self;
- (NSInteger)one;
- (NSInteger)two;
@end
@implementation ObjcMethodSwizzleTest : NSObject
- (id)self {
return [super self];
}
- (NSInteger)one {
return 1;
}
- (NSInteger)two {
return 2;
}
@end
@interface ObjcMethodSwizzleTest (ObjcMethodSwizzleTestCategory)
- (NSUInteger)hash;
@end
@implementation ObjcMethodSwizzleTest (ObjcMethodSwizzleTestCategory)
- (NSUInteger)hash {
return [super hash];
}
@end
namespace ObjcEvilDoers {
TEST(ObjcMethodSwizzleTest, GetImplementedInstanceMethod) {
EXPECT_EQ(class_getInstanceMethod([NSObject class], @selector(dealloc)),
GetImplementedInstanceMethod([NSObject class], @selector(dealloc)));
EXPECT_EQ(class_getInstanceMethod([NSObject class], @selector(self)),
GetImplementedInstanceMethod([NSObject class], @selector(self)));
EXPECT_EQ(class_getInstanceMethod([NSObject class], @selector(hash)),
GetImplementedInstanceMethod([NSObject class], @selector(hash)));
Class testClass = [ObjcMethodSwizzleTest class];
EXPECT_EQ(class_getInstanceMethod(testClass, @selector(self)),
GetImplementedInstanceMethod(testClass, @selector(self)));
EXPECT_NE(class_getInstanceMethod([NSObject class], @selector(self)),
class_getInstanceMethod(testClass, @selector(self)));
EXPECT_TRUE(class_getInstanceMethod(testClass, @selector(dealloc)));
EXPECT_FALSE(GetImplementedInstanceMethod(testClass, @selector(dealloc)));
}
TEST(ObjcMethodSwizzleTest, SwizzleImplementedInstanceMethods) {
scoped_nsobject<ObjcMethodSwizzleTest> object(
[[ObjcMethodSwizzleTest alloc] init]);
EXPECT_EQ([object one], 1);
EXPECT_EQ([object two], 2);
Class testClass = [object class];
SwizzleImplementedInstanceMethods(testClass, @selector(one), @selector(two));
EXPECT_EQ([object one], 2);
EXPECT_EQ([object two], 1);
SwizzleImplementedInstanceMethods(testClass, @selector(one), @selector(two));
EXPECT_EQ([object one], 1);
EXPECT_EQ([object two], 2);
}
} // namespace ObjcEvilDoers
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