我用一些示例组编写了一个测试用例，包括 beforeEach 和 afterEach。 我希望每个 beforeEach 和 afterEach 都会为每个 it 调用一次。

唉，对于单个 it，beforeEach 和 afterEach 被调用了多次。

我查看了一些文档(即 Quick 自己的文档和 http://jasmine.github.io/2.1/introduction.html )，但这些对我的事业没有帮助。

这是一个演示这一点的小片段:

类 CheckerTests:QuickSpec {

override func spec() {

    describe("something") {
        beforeEach {
            tLog.info("describe before")
        }
        afterEach {
            tLog.info("describe after")
        }

        context("of something") {
            beforeEach {
                tLog.info("context before")
            }
            afterEach {
                tLog.info("context after")
            }

            it("should behave like something") {
                tLog.info("in the `IT`")
                expect(true).to(beTrue())
            }
        }
    }

}

我的控制台日志:

以上日志提出了两个问题:

• 我不确定什么时候 beforeEach 和afterEach 现在被调用；我也不知道为什么我看到多个日志调用它们。为什么他们被多次调用？

- 上面的日志显示 context 的 after block 被调用 before 示例通过...应该不会发生 < em="">在例子之后？

根据我的代码片段，我希望日志返回:

有人可以解释这里发生了什么吗？这是正确的行为吗？

编辑:

如评论所建议；我还在 it 示例中添加了一个日志 inside(请参阅上面修改后的代码片段)。 这给了我以下日志:

Test Suite 'CheckerTests' started at 2017-05-18 13:35:29.025
Test Case '-[CheckerTests something__of_something__should_behave_like_something]' started.
13:35:29.046 ? INFO CheckerTests.spec():21 - describe before
13:35:29.046 ? INFO CheckerTests.spec():21 - describe before
13:35:29.048 ? INFO CheckerTests.spec():29 - context before
13:35:29.048 ? INFO CheckerTests.spec():29 - context before
13:35:29.048 ? INFO CheckerTests.spec():36 - in the `IT`
13:35:29.048 ? INFO CheckerTests.spec():36 - in the `IT`
13:35:29.049 ? INFO CheckerTests.spec():32 - context after
1Test Case '-[CheckerTests something__of_something__should_behave_like_something]' passed (0.024 seconds).
3:35:29.049 ? INFO CheckerTests.spec():32 - context after
13:35:29.050 ? INFOTest Suite 'CheckerTests' passed at 2017-05-18 13:35:29.050.
     Executed 1 test, with 0 failures (0 unexpected) in 0.024 (0.025) seconds
 CheckerTests.spec():24 - describe after
13:35:29.050 \360\237\222Test Suite 'CheckerTests.xctest' passed at 2017-05-18 13:35:29.051.
     Executed 1 test, with 0 failures (0 unexpected) in 0.024 (0.026) seconds
\231 INFO CheckerTests.spec():24 - describe after
Test Suite 'Selected tests' passed at 2017-05-18 13:35:29.051.
     Executed 1 test, with 0 failures (0 unexpected) in 0.024 (0.029) seconds

上面的日志告诉我这个例子运行了两次，这让我更加困惑。

编辑:
其中一个问题得到了回答:

- 上面的日志显示 context 的 after block 被调用 before 示例通过...应该不会发生 < em="">在例子之后？

似乎测试按照正确的顺序进行，因此回答了上述问题。

编辑:

供引用；这是我的 Podfile 的样子:

def pods_for_testing
    pod 'Quick'
    pod 'Nimble'
    pod 'KIF'
end

target 'Checker' do
  project 'Checker.xcodeproj', 'dev' => :debug, 'ntrl' => :debug, 'acpt' => :release, 'prod' => :release, 'prod appstore' => :release

  pod 'SQLCipher'
  pod 'UrbanAirship-iOS-SDK'
  pod 'TBXML', :inhibit_warnings => true
  pod 'SSZipArchive'
  pod 'Google/Analytics'
  pod 'Moya', '>= 8.0'
  pod 'Unbox'
  pod 'ProcedureKit'
  pod 'ProcedureKit/Mobile'
  pod 'SwiftyBeaver'
  pod 'OHHTTPStubs'
  pod 'OHHTTPStubs/Swift'

  target 'CheckerTests' do
      inherit! :search_paths
      pods_for_testing
  end

  target 'CheckerUITests' do
      inherit! :search_paths
      pods_for_testing
  end

end

除此之外，我不确定还有哪些其他设置会影响测试。

最佳答案

我试图重现这个问题。但在我的例子中，每个测试用例都被执行了一个。

因此，该问题似乎无法在正常设置中重现。可能您有一些特殊设置导致了上述问题。

注意:
我不确定您还需要哪些其他库才能获得“tLog.info”，但我找不到。我认为这对这个目的无关紧要。我用 print(_:) 语句代替。

这是我的“TryQuickTest.swift”的样子:

import XCTest
import Quick
import Nimble 

class TryQuickTest: QuickSpec {

    override func spec() {

        describe("blah") {
            beforeEach {
                print("describe before")
            }
            afterEach {
                print("describe after")
            }

            context("of blah2") {
                beforeEach {
                    print("context before")
                }
                afterEach {
                    print("context after")
                }

                it("first it should be like this") {
                    print("in the first `IT`")
                    XCTFail("Hey fail in first it")
                }

                it("second it should be like this") {
                    print("in the second `IT`")
                    XCTFail("Hey fail in second it")
                }
            }
        }   
    }    
}

以及我运行此测试文件的控制台:

Test Suite 'Selected tests' started at 2017-05-28 07:35:32.345
Test Suite 'PlayQuickTests.xctest' started at 2017-05-28 07:35:32.347
Test Suite 'TryQuickTest' started at 2017-05-28 07:35:32.348
Test Case '-[PlayQuickTests.TryQuickTest blah__of_blah2__first_it_should_be_like_this]' started.
describe before
context before
in the first `IT`
/Users/shisui/Developer/General/iOS_Swift/PlayQuick/PlayQuickTests/TryQuickTest.swift:35: error: -[PlayQuickTests.TryQuickTest blah__of_blah2__first_it_should_be_like_this] : failed - Hey fail in first it
context after
describe after
Test Case '-[PlayQuickTests.TryQuickTest blah__of_blah2__first_it_should_be_like_this]' failed (0.004 seconds).
Test Case '-[PlayQuickTests.TryQuickTest blah__of_blah2__second_it_should_be_like_this]' started.
describe before
context before
in the second `IT`
/Users/shisui/Developer/General/iOS_Swift/PlayQuick/PlayQuickTests/TryQuickTest.swift:40: error: -[PlayQuickTests.TryQuickTest blah__of_blah2__second_it_should_be_like_this] : failed - Hey fail in second it
context after
describe after
Test Case '-[PlayQuickTests.TryQuickTest blah__of_blah2__second_it_should_be_like_this]' failed (0.003 seconds).
Test Suite 'TryQuickTest' failed at 2017-05-28 07:35:32.359.
    Executed 2 tests, with 2 failures (0 unexpected) in 0.007 (0.010) seconds
Test Suite 'PlayQuickTests.xctest' failed at 2017-05-28 07:35:32.359.
    Executed 2 tests, with 2 failures (0 unexpected) in 0.007 (0.012) seconds
Test Suite 'Selected tests' failed at 2017-05-28 07:35:32.374.
    Executed 2 tests, with 2 failures (0 unexpected) in 0.007 (0.029) seconds

来自上面的输出。每个测试用例只执行一次。

如果我删除第二个“它”部分。控制台输出如下所示:

Test Suite 'Selected tests' started at 2017-05-28 07:56:09.214
Test Suite 'PlayQuickTests.xctest' started at 2017-05-28 07:56:09.215
Test Suite 'TryQuickTest' started at 2017-05-28 07:56:09.215
Test Case '-[PlayQuickTests.TryQuickTest blah__of_blah2__first_it_should_be_like_this]' started.
describe before
context before
in the first `IT`
/Users/shisui/Developer/General/iOS_Swift/PlayQuick/PlayQuickTests/TryQuickTest.swift:35: error: -[PlayQuickTests.TryQuickTest blah__of_blah2__first_it_should_be_like_this] : failed - Hey fail in first it
context after
describe after
Test Case '-[PlayQuickTests.TryQuickTest blah__of_blah2__first_it_should_be_like_this]' failed (0.006 seconds).
Test Suite 'TryQuickTest' failed at 2017-05-28 07:56:09.222.
    Executed 1 test, with 1 failure (0 unexpected) in 0.006 (0.007) seconds
Test Suite 'PlayQuickTests.xctest' failed at 2017-05-28 07:56:09.224.
    Executed 1 test, with 1 failure (0 unexpected) in 0.006 (0.009) seconds
Test Suite 'Selected tests' failed at 2017-05-28 07:56:09.224.
    Executed 1 test, with 1 failure (0 unexpected) in 0.006 (0.011) seconds

关于ios - 为什么在使用 Quick 进行单元测试时多次调用 before- 和 afterEach block ？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44044433/