摘要
现在大部分的iOS应用都是先从网络获取数据，在做相应的处理，数据的获取一般是在异步线程里做，所以做单元测试比较麻烦。这里主要介绍Kiwi 的用法，Kiwi 是 unit test 框架，已经封装好了很多XTest 的Api ,使用起来非常方便。项目结构是用MVP 架构的，因为这种架构比较容易进行测试。项目的测试Demo 已发到Github，https://github.com/Alimjan2009/AAMVPUnitTest
1. 准备好项目
测试demo
我的测试demo 功能很简单，点击获取信息按钮以后，发送http 请求获取数据，再展示到label 里边
相应的代码如下：
- PlaceInfoViewController.m
//
// PlaceInfoViewController.m
// AAMVPUnitTest
//
#import "PlaceInfoViewController.h"
#import "PlaceInfoPresenter.h"
@interface PlaceInfoViewController ()<PlaceInfoViewImpl>
@property (weak, nonatomic) IBOutlet UITextField *place;
@property (weak, nonatomic) IBOutlet UILabel *result;
@end
@implementation PlaceInfoViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
_presenter = [[PlaceInfoPresenter alloc]initWithView:self];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)onGetPlaceInfoPressed:(id)sender {
[_presenter loadDate:_place.text];
}
-(void)showResult:(NSString*)res{
_result.text = res;
}
@end
- PlaceInfoViewController.h
#import <UIKit/UIKit.h>
#import "PlaceInfoPresenter.h"
@interface PlaceInfoViewController : UIViewController
@property (nonatomic, strong) PlaceInfoPresenter *presenter;
@end
- PlaceInfoPresenter.m
//
// PlaceInfoPresenter.m
// AAMVPUnitTest
//
#import "PlaceInfoPresenter.h"
#import "AFNetworking.h"
@implementation PlaceInfoPresenter
- (instancetype)initWithView:(id<PlaceInfoViewImpl>) view
{
self = [super init];
if (self) {
self.view = view;
}
return self;
}
-(void)loadDate:(NSString*)placeName{
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"];
manager.responseSerializer =[AFJSONResponseSerializer serializer];
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json",@"text/plain", @"text/html",@"text/json",@"text/javascript", nil];
//2.设置登录参数
NSDictionary *dict = @{ @"a":placeName};
//3.请求
[manager GET:@"http://gc.ditu.aliyun.com/geocoding" parameters:dict success: ^(AFHTTPRequestOperation *operation, id responseObject) {
NSError *parseError = nil;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:responseObject options:NSJSONWritingPrettyPrinted error:&parseError];
if(_view!=nil)
[_view showResult:[[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding]];
} failure: ^(AFHTTPRequestOperation *operation, NSError *error) {
}];
}
@end
- PlaceInfoPresenter.h
//
// PlaceInfoPresenter.h
// AAMVPUnitTest
//
// Created by Alimjan on 16/5/4.
// Copyright © 2016年 Alimjan. All rights reserved.
//
#import <Foundation/Foundation.h>
@protocol PlaceInfoViewImpl
-(void)showResult:(NSString*)res;
@end
@protocol PlaceInfoPresenterImpl
-(void)loadDate:(NSString*)placeName;
@end
@interface PlaceInfoPresenter : NSObject<PlaceInfoPresenterImpl>
@property (nonatomic, strong) id<PlaceInfoViewImpl> view;
- (instancetype)initWithView:(id<PlaceInfoViewImpl>) view;
@end
2. 集成kiwi
Kiwi 用cocopods 安装非常方便。以下是我的Podfile
target 'AAMVPUnitTestTests' , :exclusive => true do
pod 'Kiwi'
end
3. 写测试模块
创建一个m 文件，并按照kiwi 格式写测试模块。我们的presenter 获取数据成功后，会调用showresult ,所以我们只要判断showresult 是否有被调用，就能判断接口是否成功
要是不知道mock 是什么，可以查看Kiwi 的手册。
- PlaceInfoTestSpec.m
//
// PlaceInfoTestSpec.m
// AAMVPUnitTest
//
// Created by Alimjan on 16/5/4.
// Copyright 2016年 Alimjan. All rights reserved.
//
#import <Kiwi/Kiwi.h>
#import "PlaceInfoViewController.h"
#import "PlaceInfoPresenter.h"
SPEC_BEGIN(PlaceInfoTestSpec)
describe(@"PlaceInfoTest", ^{
it(@"place info presenter test", ^{
//
// mock the view and stub the showResult method
// 我们要测试api, 不关心view， 所以我们可以mock view
id viewMock = [KWMock mockForProtocol:@protocol(PlaceInfoViewImpl)];
[ [viewMock should] conformToProtocol:@protocol(PlaceInfoViewImpl)];
[viewMock stub:@selector(showResult:) ];
// init presenter
// 初始化我们的presenter
PlaceInfoPresenter *presenter = [[PlaceInfoPresenter alloc]initWithView:viewMock];
// send asnc request
// 测试我们的 业务
[presenter loadDate:@"北京"];
//wait until the show result called
// 等待3秒，知道show result 方法被调用。我们的presenter 获取数据成功后，会调用showresult ,所以我们只要判断showresult 是否有被调用，就能判断接口是否成功
[[viewMock shouldEventuallyBeforeTimingOutAfter(3.0)]receive:@selector(showResult:) withCount:1];
});
});
SPEC_END
