Logic

README.md

@@ -3,19 +3,31 @@ iOS 测试
 
 ###目录
 
+* [如何编写单元测试](#如何编写单元测试)
 * [定义测试范围](#定义测试范围)
-*    [测试性能](#测试性能)
-*    [测试应用程序和库](#测试应用程序和库)
-*    [XCTest—Xcode的测试框架](#XCTest—Xcode的测试框架)
-*    [测试应该从何处开始](#测试应该从何处开始)
-*    [断言分类](#断言分类)
+* [测试性能](#测试性能)
+* [测试应用程序和库](#测试应用程序和库)
+* [XCTest—Xcode的测试框架](#XCTest—Xcode的测试框架)
+* [测试应该从何处开始](#测试应该从何处开始)
+* [断言分类](#断言分类)
 
       * [无条件失败](#无条件失败)
       * [相等性测试](#相等性测试)
       * [为空测试](#为空测试)
       * [布尔型测试](#布尔型测试)
       * [异常测试](#异常测试)
 
+###如何编写单元测试
+1. 前提。在编写单元测试中，首先要记住的是***识别出你的程序需要做什么***。在我知道我需要什么之后，我就能够决定我需要什么样的代码来实现我的需求。这些代码将会成为测试的主体。
+2. ***用已知的输入运行代码***。单元测试的一个重要的特性就是它应当是可重复的。无论何时，也无论在什么计算机上，如果测试代码正确，它就应该通过，否则就应该失败。
+3. ***观察期望得到的结果***。
+4. ***校验结果***
+5. ***重构***
+
+
+
+
+
 ###定义测试范围
 
 

iOS TDD Study/StackOverflowManager.h

@@ -0,0 +1,15 @@
+//
+//  StackOverflowManager.h
+//  iOS TDD Study
+//
+//  Created by sanlen on 9/12/14.
+//  Copyright (c) 2014 Onetaway. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface StackOverflowManager : NSObject
+
+@property (nonatomic, weak) id<StackOverflowManagerDelegate> delegate;
+
+@end

iOS TDD Study/StackOverflowManager.m

@@ -0,0 +1,21 @@
+//
+//  StackOverflowManager.m
+//  iOS TDD Study
+//
+//  Created by sanlen on 9/12/14.
+//  Copyright (c) 2014 Onetaway. All rights reserved.
+//
+
+#import "StackOverflowManager.h"
+
+@implementation StackOverflowManager
+
+- (void)setDelegate:(id<StackOverflowManagerDelegate>)delegate {
+    if (![delegate conformsToProtocol: @protocol(StackOverflowManagerDelegate)]) {
+        [[NSException exceptionWithName:NSInvalidArgumentException reason:@"object doesn't conform to the protocol" userInfo:nil] raise];
+    }
+
+    _delegate = delegate;
+}
+
+@end

iOS TDD StudyTests/QuestionCreationTests.m

@@ -0,0 +1,93 @@
+//
+//  QuestionCreationTests.m
+//  iOS TDD Study
+//
+//  Created by sanlen on 9/12/14.
+//  Copyright (c) 2014 Onetaway. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+#import <XCTest/XCTest.h>
+
+#import "StackOverflowManager.h"
+
+@interface QuestionCreationTests : XCTestCase
+
+@property (nonatomic, strong) StackOverflowManager *mgr;
+
+@end
+
+@implementation QuestionCreationTests
+
+- (void)setUp {
+    [super setUp];
+
+    _mgr = [[StackOverflowManager alloc] init];
+}
+
+- (void)tearDown {
+
+    _mgr = nil;
+
+    [super tearDown];
+}
+
+
+- (void)testPerformanceExample {
+    // This is an example of a performance test case.
+    [self measureBlock:^{
+        // Put the code you want to measure the time of here.
+    }];
+}
+
+- (void)testNonConformingObjectCannotBeDelegate {
+
+    XCTAssertThrows(self.mgr.delegate = (id <StackOverflowManagerDelegate>)[NSNull null], @"NSNull should not be used as the delegate as doesn't comform to the delegate protocol.");
+}
+
+- (void)testConformingObjectCanBeDelegate {
+    id<StackOverflowManagerDelegate> delegate = [[MockStackOverFlowManagerDelegate alloc] init];
+
+
+    XCTAssertNoThrow(self.mgr = delegate, @"object conforming to delegate protocol ccan be used as the delegate");
+}
+
+- (void)testManagerAcceptsNilAsADelegate {
+    XCTAssertNoThrow(self.mgr = nil, @"It should be accept to use nil as a delegate");
+}
+
+@end
+
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