Question

I want to do mock for TnSettings, yes, it works if code by the following method, the problem is that we need to do write mock code for each case, if we only mock once then execute more than one case, then the second will report exception. I use the latest OCMock V2.01.

My question is that why OCMock has such restriction? Or is it my fault not to use it correctly?

Any idea or discussion will be appreciated, thanks in advance.

- (void) testFormattedDistanceValueWithMeters {         
        mockSettings = [OCMockObject mockForClass:[TnSettings class]];
        mockClientModel = [TnClientModel createMockClientModel];
        [[[mockClientModel expect] andReturn:mockSettings] settings];
        [[[mockSettings expect] andReturn:[NSNumber numberWithInt:0]] preferencesGeneralUnits];

        NSNumber *meters = [NSNumber numberWithDouble:0.9];
        distance = [NSString formattedDistanceValueWithMeters:meters];
        STAssertEqualObjects(distance, @"0.9", @"testformattedEndTimeForTimeInSeconds failed");

        //------------- Another case -----------------
        mockSettings = [OCMockObject mockForClass:[TnSettings class]];
        mockClientModel = [TnClientModel createMockClientModel];
        [[[mockClientModel expect] andReturn:mockSettings] settings];
        [[[mockSettings expect] andReturn:[NSNumber numberWithInt:0]] preferencesGeneralUnits];

        meters = [NSNumber numberWithDouble:100.9];
        distance = [NSString formattedDistanceValueWithMeters:meters];
        STAssertEqualObjects(distance, @"101", @"testformattedEndTimeForTimeInSeconds failed");
}

Answer 1

Not sure I understand your question or your code fully. I suspect that you stumbled over the difference between expect and stub, though.

Is this what you had in mind?

- (void) testFormattedDistanceValueWithMeters {         
    mockSettings = [OCMockObject mockForClass:[TnSettings class]];
    mockClientModel = [TnClientModel createMockClientModel];
    [[[mockClientModel stub] andReturn:mockSettings] settings];
    [[[mockSettings stub] andReturn:[NSNumber numberWithInt:0]] preferencesGeneralUnits];

    NSNumber *meters = [NSNumber numberWithDouble:0.9];
    distance = [NSString formattedDistanceValueWithMeters:meters];
    STAssertEqualObjects(distance, @"0.9", @"testformattedEndTimeForTimeInSeconds failed");

    meters = [NSNumber numberWithDouble:100.9];
    distance = [NSString formattedDistanceValueWithMeters:meters];
    STAssertEqualObjects(distance, @"101", @"testformattedEndTimeForTimeInSeconds failed");

}