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<!-- *********************
DO NOT EDIT THIS FILE
It is a generated build output from Stardoc.
Instead you must edit the .bzl file where the rules are declared,
or possibly a markdown file next to the .bzl file
********************* -->
<h1 id="karma-rules-for-bazel">Karma rules for Bazel</h1>
<p>The Karma rules run karma tests with Bazel.</p>
<h2 id="installation">Installation</h2>
<p>Add the <code class="language-plaintext highlighter-rouge">@bazel/karma</code> npm package to your <code class="language-plaintext highlighter-rouge">devDependencies</code> in <code class="language-plaintext highlighter-rouge">package.json</code>.</p>
<p>Now add this to your <code class="language-plaintext highlighter-rouge">WORKSPACE</code> to install the Karma dependencies:</p>
<div class="language-python highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="c1"># Fetch transitive Bazel dependencies of @bazel/karma
</span><span class="n">load</span><span class="p">(</span><span class="s">"@npm//@bazel/karma:package.bzl"</span><span class="p">,</span> <span class="s">"npm_bazel_karma_dependencies"</span><span class="p">)</span>
<span class="n">npm_bazel_karma_dependencies</span><span class="p">()</span>
</code></pre></div></div>
<p>This installs the <code class="language-plaintext highlighter-rouge">io_bazel_rules_webtesting</code> repository, if you haven’t installed it earlier.</p>
<p>Finally, configure the rules_webtesting:</p>
<div class="language-python highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="c1"># Set up web testing, choose browsers we can test on
</span><span class="n">load</span><span class="p">(</span><span class="s">"@io_bazel_rules_webtesting//web:repositories.bzl"</span><span class="p">,</span> <span class="s">"web_test_repositories"</span><span class="p">)</span>
<span class="n">web_test_repositories</span><span class="p">()</span>
<span class="n">load</span><span class="p">(</span><span class="s">"@io_bazel_rules_webtesting//web/versioned:browsers-0.3.2.bzl"</span><span class="p">,</span> <span class="s">"browser_repositories"</span><span class="p">)</span>
<span class="n">browser_repositories</span><span class="p">(</span>
<span class="n">chromium</span> <span class="o">=</span> <span class="bp">True</span><span class="p">,</span>
<span class="n">firefox</span> <span class="o">=</span> <span class="bp">True</span><span class="p">,</span>
<span class="p">)</span>
</code></pre></div></div>
<h2 id="installing-with-self-managed-dependencies">Installing with self-managed dependencies</h2>
<p>If you didn’t use the <code class="language-plaintext highlighter-rouge">yarn_install</code> or <code class="language-plaintext highlighter-rouge">npm_install</code> rule to create an <code class="language-plaintext highlighter-rouge">npm</code> workspace, you’ll have to declare a rule in your root <code class="language-plaintext highlighter-rouge">BUILD.bazel</code> file to execute karma:</p>
<div class="language-python highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="c1"># Create a karma rule to use in ts_web_test_suite karma
# attribute when using self-managed dependencies
</span><span class="n">nodejs_binary</span><span class="p">(</span>
<span class="n">name</span> <span class="o">=</span> <span class="s">"karma/karma"</span><span class="p">,</span>
<span class="n">entry_point</span> <span class="o">=</span> <span class="s">"//:node_modules/karma/bin/karma"</span><span class="p">,</span>
<span class="c1"># Point bazel to your node_modules to find the entry point
</span> <span class="n">node_modules</span> <span class="o">=</span> <span class="p">[</span><span class="s">"//:node_modules"</span><span class="p">],</span>
<span class="p">)</span>
</code></pre></div></div>
<h2 id="karma_web_test">karma_web_test</h2>
<p><strong>USAGE</strong></p>
<pre>
karma_web_test(<a href="#karma_web_test-srcs">srcs</a>, <a href="#karma_web_test-deps">deps</a>, <a href="#karma_web_test-data">data</a>, <a href="#karma_web_test-configuration_env_vars">configuration_env_vars</a>, <a href="#karma_web_test-bootstrap">bootstrap</a>, <a href="#karma_web_test-runtime_deps">runtime_deps</a>, <a href="#karma_web_test-static_files">static_files</a>,
<a href="#karma_web_test-config_file">config_file</a>, <a href="#karma_web_test-tags">tags</a>, <a href="#karma_web_test-peer_deps">peer_deps</a>, <a href="#karma_web_test-kwargs">kwargs</a>)
</pre>
<p>Runs unit tests in a browser with Karma.</p>
<p>When executed under <code class="language-plaintext highlighter-rouge">bazel test</code>, this uses a headless browser for speed.
This is also because <code class="language-plaintext highlighter-rouge">bazel test</code> allows multiple targets to be tested together,
and we don’t want to open a Chrome window on your machine for each one. Also,
under <code class="language-plaintext highlighter-rouge">bazel test</code> the test will execute and immediately terminate.</p>
<p>Running under <code class="language-plaintext highlighter-rouge">ibazel test</code> gives you a “watch mode” for your tests. The rule is
optimized for this case - the test runner server will stay running and just
re-serve the up-to-date JavaScript source bundle.</p>
<p>To debug a single test target, run it with <code class="language-plaintext highlighter-rouge">bazel run</code> instead. This will open a
browser window on your computer. Also you can use any other browser by opening
the URL printed when the test starts up. The test will remain running until you
cancel the <code class="language-plaintext highlighter-rouge">bazel run</code> command.</p>
<p>This rule will use your system Chrome by default. In the default case, your
environment must specify CHROME_BIN so that the rule will know which Chrome binary to run.
Other <code class="language-plaintext highlighter-rouge">browsers</code> and <code class="language-plaintext highlighter-rouge">customLaunchers</code> may be set using the a base Karma configuration
specified in the <code class="language-plaintext highlighter-rouge">config_file</code> attribute.</p>
<p>By default we open a headless Chrome. To use a real Chrome browser window, you can pass
<code class="language-plaintext highlighter-rouge">--define DISPLAY=true</code> to Bazel, along with <code class="language-plaintext highlighter-rouge">configuration_env_vars = ["DISPLAY"]</code> on
<code class="language-plaintext highlighter-rouge">karma_web_test</code>.</p>
<p><strong>PARAMETERS</strong></p>
<h4 id="karma_web_test-srcs">srcs</h4>
<p>A list of JavaScript test files</p>
<p>Defaults to <code class="language-plaintext highlighter-rouge">[]</code></p>
<h4 id="karma_web_test-deps">deps</h4>
<p>Other targets which produce JavaScript such as <code class="language-plaintext highlighter-rouge">ts_library</code></p>
<p>Defaults to <code class="language-plaintext highlighter-rouge">[]</code></p>
<h4 id="karma_web_test-data">data</h4>
<p>Runtime dependencies</p>
<p>Defaults to <code class="language-plaintext highlighter-rouge">[]</code></p>
<h4 id="karma_web_test-configuration_env_vars">configuration_env_vars</h4>
<p>Pass these configuration environment variables to the resulting binary.
Chooses a subset of the configuration environment variables (taken from ctx.var), which also
includes anything specified via the –define flag.
Note, this can lead to different outputs produced by this rule.</p>
<p>Defaults to <code class="language-plaintext highlighter-rouge">[]</code></p>
<h4 id="karma_web_test-bootstrap">bootstrap</h4>
<p>JavaScript files to include <em>before</em> the module loader (require.js).
For example, you can include Reflect,js for TypeScript decorator metadata reflection,
or UMD bundles for third-party libraries.</p>
<p>Defaults to <code class="language-plaintext highlighter-rouge">[]</code></p>
<h4 id="karma_web_test-runtime_deps">runtime_deps</h4>
<p>Dependencies which should be loaded after the module loader but before the srcs and deps.
These should be a list of targets which produce JavaScript such as <code class="language-plaintext highlighter-rouge">ts_library</code>.
The files will be loaded in the same order they are declared by that rule.</p>
<p>Defaults to <code class="language-plaintext highlighter-rouge">[]</code></p>
<h4 id="karma_web_test-static_files">static_files</h4>
<p>Arbitrary files which are available to be served on request.
Files are served at:
<code class="language-plaintext highlighter-rouge">/base/&amp;lt;WORKSPACE_NAME&amp;gt;/&amp;lt;path-to-file&amp;gt;</code>, e.g.
<code class="language-plaintext highlighter-rouge">/base/npm_bazel_typescript/examples/testing/static_script.js</code></p>
<p>Defaults to <code class="language-plaintext highlighter-rouge">[]</code></p>
<h4 id="karma_web_test-config_file">config_file</h4>
<p>User supplied Karma configuration file. Bazel will override
certain attributes of this configuration file. Attributes that are
overridden will be outputted to the test log.</p>
<p>Defaults to <code class="language-plaintext highlighter-rouge">None</code></p>
<h4 id="karma_web_test-tags">tags</h4>
<p>Standard Bazel tags, this macro adds tags for ibazel support</p>
<p>Defaults to <code class="language-plaintext highlighter-rouge">[]</code></p>
<h4 id="karma_web_test-peer_deps">peer_deps</h4>
<p>list of peer npm deps required by karma_web_test</p>
<p>Defaults to <code class="language-plaintext highlighter-rouge">["@npm//jasmine-core", "@npm//karma", "@npm//karma-chrome-launcher", "@npm//karma-firefox-launcher", "@npm//karma-jasmine", "@npm//karma-requirejs", "@npm//karma-sourcemap-loader", "@npm//requirejs"]</code></p>
<h4 id="karma_web_test-kwargs">kwargs</h4>
<p>Passed through to <code class="language-plaintext highlighter-rouge">karma_web_test</code></p>
<h2 id="karma_web_test_suite">karma_web_test_suite</h2>
<p><strong>USAGE</strong></p>
<pre>
karma_web_test_suite(<a href="#karma_web_test_suite-name">name</a>, <a href="#karma_web_test_suite-browsers">browsers</a>, <a href="#karma_web_test_suite-web_test_data">web_test_data</a>, <a href="#karma_web_test_suite-wrapped_test_tags">wrapped_test_tags</a>, <a href="#karma_web_test_suite-kwargs">kwargs</a>)
</pre>
<p>Defines a test_suite of web_test targets that wrap a karma_web_test target.</p>
<p>This macro accepts all parameters in karma_web_test and adds additional parameters
for the suite. See karma_web_test docs for all karma_web_test.</p>
<p>The wrapping macro is <code class="language-plaintext highlighter-rouge">web_test_suite</code> which comes from rules_websting:
https://github.com/bazelbuild/rules_webtesting/blob/master/web/web.bzl.</p>
<p><strong>PARAMETERS</strong></p>
<h4 id="karma_web_test_suite-name">name</h4>
<p>The base name of the test</p>
<h4 id="karma_web_test_suite-browsers">browsers</h4>
<p>A sequence of labels specifying the browsers to use.</p>
<p>Defaults to <code class="language-plaintext highlighter-rouge">None</code></p>
<h4 id="karma_web_test_suite-web_test_data">web_test_data</h4>
<p>Data dependencies for the wrapper web_test targets.</p>
<p>Defaults to <code class="language-plaintext highlighter-rouge">[]</code></p>
<h4 id="karma_web_test_suite-wrapped_test_tags">wrapped_test_tags</h4>
<p>A list of test tag strings to use for the wrapped
karma_web_test target.</p>
<p>Defaults to <code class="language-plaintext highlighter-rouge">["manual", "noci"]</code></p>
<h4 id="karma_web_test_suite-kwargs">kwargs</h4>
<p>Arguments for the wrapped karma_web_test target.</p>
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<li class="toc-entry toc-h2"><a href="#installation">Installation</a></li>
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