2020-06-30 14:14:34 -04:00
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# Debugging tests
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If your tests aren't working as you expect them to, you can inspect and debug them in the browser.
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<div class="alert is-helpful">
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2020-07-14 12:17:56 +03:00
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For the sample app that the testing guides describe, see the <live-example name="testing" embedded-style noDownload>sample app</live-example>.
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2020-06-30 14:14:34 -04:00
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2020-07-14 12:17:56 +03:00
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For the tests features in the testing guides, see <live-example name="testing" stackblitz="specs" noDownload>tests</live-example>.
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2020-11-28 12:50:51 +08:00
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</div>
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2020-06-30 14:14:34 -04:00
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2021-04-03 09:52:53 -04:00
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Debug specs in the browser in the same way that you debug an application.
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2020-11-28 12:50:51 +08:00
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2020-06-30 14:14:34 -04:00
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1. Reveal the Karma browser window. See [Set up testing](guide/testing#set-up-testing) if you need help with this step.
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1. Click the **DEBUG** button; it opens a new browser tab and re-runs the tests.
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1. Open the browser's “Developer Tools” (`Ctrl-Shift-I` on Windows; `Command-Option-I` in macOS).
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1. Pick the "sources" section.
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1. Open the `1st.spec.ts` test file (Control/Command-P, then start typing the name of the file).
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1. Set a breakpoint in the test.
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1. Refresh the browser, and it stops at the breakpoint.
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<div class="lightbox">
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<img src='generated/images/guide/testing/karma-1st-spec-debug.png' alt="Karma debugging">
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</div>
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