Objective C - 单元测试和模拟对象

Objective C 是一种面向对象的编程语言，广泛用于 iOS 和 macOS 应用程序的开发。单元测试和模拟对象是软件开发中非常重要的概念，用于确保代码的质量和可靠性。在本文中，我们将探讨如何在 Objective C 中进行单元测试和模拟对象，并提供一些示例代码来帮助读者更好地理解这些概念。

objective-c
#import 
#import "Calculator.h"
@interface CalculatorTests : XCTestCase
@property (nonatomic, strong) Calculator *calculator;
@end
@implementation CalculatorTests
- (void)setUp {
    [super setUp];
    self.calculator = [[Calculator alloc] init];
}
- (void)tearDown {
    self.calculator = nil;
    [super tearDown];
}
- (void)testAddition {
    int result = [self.calculator add:2 to:3];
    XCTAssertEqual(result, 5, @"2 + 3 应该等于 5");
}
@end

objective-c
#import 
#import 
#import "NetworkManager.h"
@interface NetworkManagerTests : XCTestCase
@property (nonatomic, strong) NetworkManager *networkManager;
@property (nonatomic, strong) id mockURLSession;
@end
@implementation NetworkManagerTests
- (void)setUp {
    [super setUp];
    self.networkManager = [[NetworkManager alloc] init];
    self.mockURLSession = OCMClassMock([NSURLSession class]);
    self.networkManager.urlSession = self.mockURLSession;
}
- (void)tearDown {
    self.networkManager = nil;
    self.mockURLSession = nil;
    [super tearDown];
}
- (void)testNetworkRequest {
    NSURL *testURL = [NSURL URLWithString:@"https://www.example.com"];
    NSURLRequest *testRequest = [NSURLRequest requestWithURL:testURL];
    
    OCMockObject *mockDataTask = [self.mockURLSession dataTaskWithRequest:testRequest completionHandler:nil];
    OCMStub([self.mockURLSession dataTaskWithRequest:testRequest completionHandler:nil]).andReturn(mockDataTask);
    
    [self.networkManager makeNetworkRequestWithURL:testURL];
    
    OCMVerify([mockDataTask resume]);
}
@end