使用OCMock期望类别方法生成"[NSProxy doesNotRecognizeSelector“.]”

Question

我正在使用OCMock来测试NSURLConnection的行为。下面是不完整的测试：

#include "GTMSenTestCase.h"
#import <OCMock/OCMock.h>

@interface HttpTest : GTMTestCase

- (void)testShouldConnect;

@end

@implementation HttpTest

- (void)testShouldConnect {
  id mock = [OCMockObject mockForClass:[NSURLConnection class]];

  NSURL *url = [NSURL URLWithString:@"http://www.google.com"];
  NSURLRequest *request = [NSURLRequest requestWithURL:url];
  NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:mock startImmediately:NO];

  [[mock expect] connection:connection didReceiveResponse:OCMOCK_ANY];
}

@end

当使用类别方法模拟类时，委托方法连接:didReceiveresponse: is，我得到了错误：

Unknown.m:0:0 Unknown.m:0: error: -[HttpTest testShouldConnect] : *** -[NSProxy doesNotRecognizeSelector:connection:didReceiveResponse:] called!

有人对此有意见吗？

Answer 1

看起来您已经创建了一个NSURLConnection的模拟对象。但是，NSProxy警告是正确的，NSURLConnection对象没有选择器连接:didReceiveResponse：-这是传递给实现协议的对象的选择器。

您需要模拟实现NSURLConnectionDelegate的对象。由于委托协议指定了连接:didReceiveResponse:您不应该获得一个错误:)

我对OCMock没有多少经验，但这似乎消除了编译错误：

@interface ConnectionDelegate : NSObject { }
- (void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response;
@end

@implementation ConnectionDelegate
- (void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { }
@end



@interface ConnectionTestCase : SenTestCase { }
@end

@implementation ConnectionTestCase

- (void)testShouldConnect {
 id mock = [OCMockObject mockForClass:[ConnectionDelegate class]];

 NSURL *url = [NSURL URLWithString:@"http://www.google.com"];
 NSURLRequest *request = [NSURLRequest requestWithURL:url];
 NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:mock startImmediately:NO];

 [[mock expect] connection:connection didReceiveResponse:OCMOCK_ANY];
}

@end

希望这能帮上忙

相同的

Answer 2

当GCC选项COPY_PHASE_STRIP设置为YES编译项目库时，我遇到了这个错误，因此符号是不可见的。然后，测试将针对该库运行，无法看到需要短截的方法，因此COPY_PHASE_STRIP=NO修复了该问题。