{"id":18725085,"url":"https://github.com/indulgein/messagemock","last_synced_at":"2025-04-12T15:50:53.329Z","repository":{"id":62447743,"uuid":"284385001","full_name":"indulgeIn/MessageMock","owner":"indulgeIn","description":"优雅的模拟 Objective-C 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MessageMock\n\n[![CocoaPods](https://img.shields.io/cocoapods/v/MessageMock.svg)](https://cocoapods.org/pods/MessageMock)\u0026nbsp;\n[![CocoaPods](https://img.shields.io/cocoapods/p/MessageMock.svg)](https://github.com/indulgeIn/MessageMock)\u0026nbsp;\n[![License](https://img.shields.io/github/license/indulgeIn/MessageMock.svg)](https://github.com/indulgeIn/MessageMock)\u0026nbsp;\n\n#### 优雅的模拟 Objective-C 方法，对参数、返回值进行任意修改和检查。\n\n#### 原理分析文章：[MessageMock : 优雅的模拟 Objective-C 方法](https://juejin.im/post/6856324772303273992)\n\n\n# 特性\n\n通过任意`[target selector]`调用命中目标方法。\n\n**功能：**\n- 修改目标方法返回值、参数\n- 验证目标方法返回值、参数\n- 跳过目标方法调用\n- 获取目标方法命中次数\n\n**TODO**\n- 支持 x86\n- 支持大于指针长度的返回值修改\n- 支持大于指针长度的参数修改\n\n\n# 安装\n\n## CocoaPods\n\n1. 在 Podfile 中添加：\n```\npod 'MessageMocker'\n```\n2. 执行 `pod install` 或 `pod update`。\n3. 导入 `#import \u003cMessageMocker.h\u003e`。\n\n## 手动导入\n\n1. 把 MessageMock 源码文件夹整个拖入工程。\n2. 导入文件`#import \"MessageMocker.h\"`\n\n\n# 基本用法\n\n通过`MessageMocker.h`的接口进行链式配置（参考`MessageMockerTests.m`的单元测试代码）。\n\n### 修改返回值\n\n```\n    NSObject *value = [NSObject new];\n    \n    MessageMocker.build(NSNotificationCenter.self, @selector(defaultCenter)).mockReturn(value).start();\n\n    XCTAssertTrue(value == [NSNotificationCenter defaultCenter]);\n```\n\n### 修改参数\n```\n    UIView *view = [UIView new];\n    NSInteger value = 999;\n    \n    MessageMocker.build(view, @selector(setTag:)).mockArgument(0, value).start();\n    \n    view.tag = 666;\n    XCTAssertTrue(view.tag == value);\n```\n\n### 检查返回值\n\n```\n    __block unsigned long value = 0;\n    \n    NSObject *obj = [NSObject new];\n    \n    MessageMocker.build(obj, @selector(hash))\n    .checkReturn(^(unsigned long arg) {\n        value = arg;\n    })\n    .start();\n    \n    unsigned long res = [obj hash];\n    XCTAssertTrue(value == res);\n```\n\n### 检查参数\n\n```\n    Class anyCls = NSString.self;\n    \n    MessageMocker.build(NSObject.self, @selector(isSubclassOfClass:))\n    .checkArgument(0, ^(Class cls){\n        XCTAssertTrue(anyCls == cls);\n    })\n    .start();\n    \n    [NSObject isSubclassOfClass:anyCls];\n```\n\n### 跳过方法调用\n\n```\n    UIView *view = [UIView new];\n    NSInteger tag = 666;\n    view.tag = tag;\n    \n    MessageMocker.build(view, @selector(setTag:)).skip(YES).start();\n    \n    view.tag = 999;\n    XCTAssertTrue(view.tag = tag);\n```\n\n### 设置/读取命中次数\n\n```\n    NSObject *value = [NSObject new];\n    \n    MessageMocker *mocker = MessageMocker.build(TestObject.self, @selector(createObj))\n    .mockReturn(value)\n    .limitHitCount(2);\n    mocker.start();\n    \n    XCTAssertTrue(value == [TestObject createObj]);\n    XCTAssertTrue(mocker.hitCount == 1);\n    XCTAssertTrue(value == [TestObject createObj]);\n    XCTAssertTrue(mocker.hitCount == 2);\n    \n    XCTAssertTrue(value != [TestObject createObj]);\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Findulgein%2Fmessagemock","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Findulgein%2Fmessagemock","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Findulgein%2Fmessagemock/lists"}