考虑下面的代码,它可以正常工作(loginWithEmail方法也可以正常使用):

_authenticationService = [[OCMockObject mockForClass:[AuthenticationService class]] retain];
[[_authenticationService expect] loginWithEmail:[OCMArg any] andPassword:[OCMArg any]];

与下面的代码:
_authenticationService = [[OCMockObject mockForProtocol:@protocol(AuthenticationServiceProtocol)] retain];
[[_authenticationService expect] loginWithEmail:[OCMArg any] andPassword:[OCMArg any]];

第二个代码示例在第2行失败,并显示以下错误:
*** -[NSProxy doesNotRecognizeSelector:loginWithEmail:andPassword:] called! Unknown.m:0: error: -[MigratorTest methodRedacted] : ***
-[NSProxy doesNotRecognizeSelector:loginWithEmail:andPassword:] called!

AuthenticationServiceProtocol声明该方法:
@protocol AuthenticationServiceProtocol <NSObject>
@property (nonatomic, retain) id<AuthenticationDelegate> authenticationDelegate;

- (void)loginWithEmail:(NSString *)email andPassword:(NSString *)password;
- (void)logout;
- (void)refreshToken;

@end

它是在该类中实现的:
@interface AuthenticationService : NSObject <AuthenticationServiceProtocol>

这是用于iOS的OCMock。

当模拟是expect时,为什么mockForProtocol失败?

最佳答案

这很好奇。我已将以下类添加到iOS5示例项目中:

@protocol AuthenticationServiceProtocol

- (void)loginWithEmail:(NSString *)email andPassword:(NSString *)password;

@end

@interface Foo : NSObject
{
    id<AuthenticationServiceProtocol> authService;
}

- (id)initWithAuthenticationService:(id<AuthenticationServiceProtocol>)anAuthService;
- (void)doStuff;

@end

@implementation Foo

- (id)initWithAuthenticationService:(id<AuthenticationServiceProtocol>)anAuthService
{
    self = [super init];
    authService = anAuthService;
    return self;
}

- (void)doStuff
{
    [authService loginWithEmail:@"x" andPassword:@"y"];
}

@end

@implementation ProtocolTests

- (void)testTheProtocol
{
    id authService = [OCMockObject mockForProtocol:@protocol(AuthenticationServiceProtocol)];
    id foo = [[Foo alloc] initWithAuthenticationService:authService];

    [[authService expect] loginWithEmail:[OCMArg any] andPassword:[OCMArg any]];

    [foo doStuff];

    [authService verify];
}

@end

当我在Xcode版本4.5(4G182)中针对iPhone 6.0模拟器运行此程序时,测试通过。模拟对象的使用方式有何不同?在您的情况下,_authenticationService传递到哪里?接收者对此做了什么?

关于objective-c - OCMock,为什么我不能期望协议(protocol)中的方法?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/12618320/

10-12 12:36
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