如何部分模拟外部对象 [英] How to partially mock external object
本文介绍了如何部分模拟外部对象的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有用于测试依赖对象(键对象)的类方法
I have class method to test with dependant object (Keys object)
APIRouter.m
+ (NSURL*)apiURLWithPath:(NSString*)path {
MyKeys *keys = [MyKeys new];
NSString *url = [NSString stringWithFormat:@"%@?api_key=%@", path, [keys APIKey]];
return [NSURL URLWithString:url];
}
我试图部分模拟此Keys对象并返回"MY_API_KEY"值,但测试方法失败并返回实际的API密钥(例如as78d687as6d7das8da).
I am trying to partially mock this Keys object and return "MY_API_KEY" value but the test method fails and returns real API key (e.g. as78d687as6d7das8da).
APIRouterSpec.m
describe(@"APIRouter", ^{
it(@"should return url for api", ^{
Keys *keys = [Keys new];
id keysPartialMock = OCMPartialMock(keys);
OCMStub([keysPartialMock APIKey]).andReturn(@"MY_API_KEY");
NSURL *url = [APIRouter apiURLWithPath:@"http://www.api.com/v1/events"];
expect([url absoluteString]).to.equal([NSString stringWithFormat:@"http://www.api.com/v1/events?api_key=MY_API_KEY"]);
});
});
推荐答案
也许这对您有用:
测试方法之外的某个地方:
Somewhere outside your test method:
static NSString *gMockApiKey = @"MY_API_KEY";
将这样的方法存根:
OCMStub([keysPartialMock APIKey]).andDo(^(NSInvocation *invocation)
{
[invocation setReturnValue:&gMockApiKey];
});
由于APIRouter可能正在使用其自己的Key实例,因此您可以尝试类模拟:
Since APIRouter is probably using its own instance of Keys you can try a class mock:
id keysMock = OCMClassMock([Keys class]);
OCMStub(ClassMethod([keysMock APIKey])).andDo(^(NSInvocation *invocation)
{
[invocation setReturnValue:&gMockApiKey];
});
所以..我认为模拟它的正确方法是创建一个Keys的模拟实例.
So.. I think the proper way to mock it would be to create a mock instance of Keys.
测试文件顶部的某处:
static Keys *gMockedKeys = nil;
static NSString *gMockApiKey = @"MY_API_KEY";
设置:
- (void)setUp {
[super setUp];
gMockedKeys = [Keys new];
id keysPartialMock = OCMPartialMock(gMockedKeys);
OCMStub([keysPartialMock APIKey]).andDo(^(NSInvocation *invocation)
{
[invocation setReturnValue:&gMockApiKey];
});
}
测试:
- (void)testAPIURLWithPath {
id keysMock = OCMClassMock([Keys class]);
OCMStub([keysMock new]).andReturn(gMockedKeys);
NSURL *url = [APIRouter apiURLWithPath:@"http://www.api.com/v1/events"];
NSString *expectedUrlString = [url absoluteString];
XCTAssertEqualObjects(expectedUrlString, @"http://www.api.com/v1/events?api_key=MY_API_KEY", @"It Should work now..");
}
这篇关于如何部分模拟外部对象的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文