iOS单元测试

//
//  BasicTests.m
//  BabyBluetoothAppDemo
//
//  Created by ZTELiuyw on 16/3/9.
//  Copyright © 2016年 刘彦玮. All rights reserved.
//

#import <XCTest/XCTest.h>

@interface BasicTests : XCTestCase

@end

@implementation BasicTests

- (void)setUp {
    [super setUp];
    // Put setup code here. This method is called before the invocation of each test method in the class.
}

- (void)tearDown {
    // Put teardown code here. This method is called after the invocation of each test method in the class.
    [super tearDown];
}

- (void)testExample {
    // This is an example of a functional test case.
    // Use XCTAssert and related functions to verify your tests produce the correct results.
}

- (void)testPerformanceExample {
    // This is an example of a performance test case.
    [self measureBlock:^{
        // Put the code you want to measure the time of here.
    }];
}

@end

//每次测试前调用，可以在测试之前创建在test case方法中需要用到的一些对象等
- (void)setUp ;
//每次测试结束时调用tearDown方法
- (void)tearDown ;

//性能测试方法，通过测试block中方法执行的时间，比对设定的标准值和偏差觉得是否可以通过测试
measureBlock

//通用断言
XCTAssert(expression, format...)
//常用断言：
XCTAssertTrue(expression, format...)
XCTAssertFalse(expression, format...)
XCTAssertEqual(expression1, expression2, format...)
XCTAssertNotEqual(expression1, expression2, format...)
XCTAssertEqualWithAccuracy(expression1, expression2, accuracy, format...)
XCTAssertNotEqualWithAccuracy(expression1, expression2, accuracy, format...)
XCTAssertNil(expression, format...)
XCTAssertNotNil(expression, format...)

XCTFail(format...) //直接Fail的断言

- (void)testExample {
    //设置变量和设置预期值
    NSUInteger a = 10;NSUInteger b = 15;
    NSUInteger expected = 24;
    //执行方法得到实际值
    NSUInteger actual = [self add:a b:b];
    //断言判定实际值和预期是否符合
    XCTAssertEqual(expected, actual,@"add方法错误！");
}
-(NSUInteger)add:(NSUInteger)a b:(NSUInteger)b{
    return a+b;
}

- (void)testPerformanceExample {
    // This is an example of a performance test case.
    [self measureBlock:^{
		  //Put the code you want to measure the time of here.
		  //你的性能测试的代码放在这里
    }];
}

    - (void)testAsynExample {
    XCTestExpectation *exp = [self expectationWithDescription:@"这里可以是操作出错的原因描述。。。"];
    NSOperationQueue *queue = [[NSOperationQueue alloc]init];
    [queue addOperationWithBlock:^{
        //模拟这个异步操作需要2秒后才能获取结果，比如一个异步网络请求
        sleep(2);
        //模拟获取的异步操作后，获取结果，判断异步方法的结果是否正确
        XCTAssertEqual(@"a", @"a");
        //如果断言没问题，就调用fulfill宣布测试满足
        [exp fulfill];
    }];

    //设置延迟多少秒后，如果没有满足测试条件就报错
    [self waitForExpectationsWithTimeout:3 handler:^(NSError * _Nullable error) {
        if (error) {
            NSLog(@"Timeout Error: %@", error);
        }
    }];
}

- (void)testThatBackgroundImageChanges {
    XCTAssertNil([self.button backgroundImageForState:UIControlStateNormal]);
	NSPredicate *predicate = [NSPredicate predicateWithBlock:^BOOL(UIButton  * _Nonnull button, NSDictionary<NSString *,id> * _Nullable bindings) {
	        return [button backgroundImageForState:UIControlStateNormal] != nil;
    }];

    [self expectationForPredicate:predicate
              evaluatedWithObject:self.button
                          handler:nil];
    [self waitForExpectationsWithTimeout:20 handler:nil];
}

- (void)testAsynExample1 {
    [self expectationForNotification:(@"监听通知的名称xxx") object:nil handler:nil];
    [[NSNotificationCenter defaultCenter]postNotificationName:@"监听通知的名称xxx" object:nil];

    //设置延迟多少秒后，如果没有满足测试条件就报错
    [self waitForExpectationsWithTimeout:3 handler:nil];
}

 func testAsynExample1() {
    let expectation = expectationWithDescription("监听通知的名称xxx")
    let sub = NSNotificationCenter.defaultCenter().addObserverForName("监听通知的名称xxx", object: nil, queue: nil) { (not) -> Void in
        expectation.fulfill()
    }
    NSNotificationCenter.defaultCenter().postNotificationName("监听通知的名称xxx", object: nil)
    waitForExpectationsWithTimeout(1, handler: nil)
    NSNotificationCenter.defaultCenter().removeObserver(sub)
}