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Debugging tests
调试测试代码
If your tests aren't working as you expect them to, you can inspect and debug them in the browser.
如果你的测试没能如预期般工作，可以在浏览器中查看和调试它们。
For the sample app that the testing guides describe, see the sample app.
对于测试指南中所讲的范例应用，参阅范例应用。
For the tests features in the testing guides, see tests.
要了解本测试指南中提到的这些测试特性，请参阅测试。
Debug specs in the browser in the same way that you debug an application.
在浏览器中调试这些测试规约的方式与调试应用时相同。
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Reveal the Karma browser window. See Set up testing if you need help with this step.
打开 Karma 的浏览器窗口。如果需要帮助，请参阅“设置测试”。
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Click the DEBUG button; it opens a new browser tab and re-runs the tests.
单击 DEBUG 按钮；它会打开一个新的浏览器选项卡并重新运行测试。
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Open the browser's “Developer Tools” (
Ctrl-Shift-Ion Windows;Command-Option-Iin macOS).打开浏览器的 “Developer Tools”（Windows 上的
Ctrl-Shift-I; macOS 上的Command-Option-I -
Pick the "sources" section.
选择 “sources” 页。
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Open the
1st.spec.tstest file (Control/Command-P, then start typing the name of the file).打开
1st.spec.ts测试文件（Control/Command-P，然后开始输入该文件的名字）。 -
Set a breakpoint in the test.
在测试中设置一个断点。
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Refresh the browser, and it stops at the breakpoint.
刷新浏览器，它会在这个断点处停下来。
