python脚本内部发生故障时，管道不会失败

问题描述

所以-我正在编写一个脚本，用于根据项目中的更改运行iOS测试（可能对主题不重要）。

在脚本中，有一个命令可以运行测试：

cmd = xcodebuild -workspace xxx.xcworkspace -scheme xxx -destination'platform = iOS Simulator，name = {0}，OS = latest'-configuration Debug -derivedDataPath {1} test-without-building {2} -parallel-启用测试功能的否-enableCodeCoverage是| xcpretty .format（os.environ ['TEST_SIMULATOR_NAME']，os.environ ['PWD']，结果）

并按以下方式执行：

do（cmd）

do（）方法定义为（

解决方案

好，我发现唯一可行的解​​决方案是将带有命令的字符串发送回gitlab的shell并在那里执行。
像这样：

在Python中：

  cmd = 
 xcodebuild 
 -workspace xxx.xcworkspace 
 -scheme xxx 
 -destination'platform = iOS Simulator，name = {0}，OS =最新的
-配置调试
 -derivedDataPath {1}测试而无构建{2} 
-启用并行测试否
 -enableCodeCoverage是| xcpretty 
 .format（os.environ ['TEST_SIMULATOR_NAME']，os.environ ['PWD']，结果）
 
 print（cmd）
  

YAML：

  manualUiTestsBasedOnChanges： 
阶段：uiTests仅
：...某些条件... 
 before_script：
-设置-o pipefail 
脚本：
-result =` ../ scripts / ci / run_UI_tests_based_on_changes.py` 
-评估 $ result 
  

So - I am writing a script for running iOS tests based on changes in project (not important to topic probably).

Within the script, there is a command, which will run the tests:

cmd = "xcodebuild -workspace xxx.xcworkspace -scheme xxx -destination 'platform=iOS Simulator,name={0},OS=latest' -configuration Debug -derivedDataPath {1} test-without-building {2} -parallel-testing-enabled NO -enableCodeCoverage YES | xcpretty".format(os.environ['TEST_SIMULATOR_NAME'], os.environ['PWD'], result)

and is executed like this:

do(cmd)

The do() method definition is (source):

def do(command):
  return_code = call([ '/bin/bash', '-c', 'set -o pipefail; ' + command ])

Gitlab job settings:

manualUiTestsBasedOnChanges:
  stage: uiTests
  only: ...some conditions...
  before_script:
    - set -o pipefail
  script:
    - ../scripts/ci/run_UI_tests_based_on_changes.py

The problem with this is, that if a fail occurs within this script, it won't fail the job, even when set -o pipefail is set in before script AND in in the do() method. Visible on image below.

Any ideas why it's behaving like this?

解决方案

Ok, the only working solution, I found is to send the string with command back to gitlab's shell and execute it there.Like this:

In Python:

cmd = "
xcodebuild
   -workspace xxx.xcworkspace
   -scheme xxx
   -destination 'platform=iOS Simulator,name={0},OS=latest'
   -configuration Debug
   -derivedDataPath {1} test-without-building {2}
   -parallel-testing-enabled NO
   -enableCodeCoverage YES | xcpretty"
.format(os.environ['TEST_SIMULATOR_NAME'], os.environ['PWD'], result)

print(cmd)

YAML:

manualUiTestsBasedOnChanges:
  stage: uiTests
  only: ...some conditions...
  before_script:
    - set -o pipefail
  script:
    - result=`../scripts/ci/run_UI_tests_based_on_changes.py`
    - eval "$result"

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