Add option to filter tests

docs/cli.html

@@ -1210,7 +1210,8 @@ <h2 id="test">test</h2>
 <p>Tests your app via <code>npm test</code>.</p>
 </blockquote><p>  <strong>Usage:</strong> <code>zapier test</code></p><p>This command is effectively the same as <code>npm test</code>, except we also validate your app and set up the environment. We recommend using mocha as your testing framework.</p><p><strong>Arguments</strong></p><ul>
 <li><code>--debug</code> -- <em>optional</em>, print zapier detailed logs to standard out</li>
-<li><code>--timeout=value</code> -- <em>optional</em>, add a default timeout to mocha, in milliseconds</li>
+<li><code>--timeout=value</code> -- <em>optional</em>, set test-case timeout in milliseconds [2000]</li>
+<li><code>--grep=value</code> -- <em>optional</em>, only run tests matching pattern</li>
 <li><code>--skip-validate</code> -- <em>optional</em>, forgo running <code>zapier validate</code> before <code>npm test</code></li>
 </ul>
     </div>

docs/cli.md

@@ -845,7 +845,8 @@ This command is effectively the same as `npm test`, except we also validate your
 
 
 * `--debug` -- _optional_, print zapier detailed logs to standard out
-* `--timeout=value` -- _optional_, add a default timeout to mocha, in milliseconds
+* `--timeout=value` -- _optional_, set test-case timeout in milliseconds [2000]
+* `--grep=value` -- _optional_, only run tests matching pattern
 * `--skip-validate` -- _optional_, forgo running `zapier validate` before `npm test`
 
 ```bash

src/commands/test.js

@@ -33,9 +33,16 @@ const test = (context) => {
       const env = _.extend({}, process.env, extraEnv);
       const commands = ['run', '--silent', 'test'];
 
-      if (global.argOpts.timeout) {
+      if (global.argOpts.timeout || global.argOpts.grep) {
         commands.push('--');
-        commands.push(`--timeout=${global.argOpts.timeout}`);
+
+        if (global.argOpts.timeout) {
+          commands.push(`--timeout=${global.argOpts.timeout}`);
+        }
+
+        if (global.argOpts.grep) {
+          commands.push(`--grep=${global.argOpts.grep}`);
+        }
       }
 
       context.line('Running test suite.');
@@ -51,7 +58,8 @@ test.argsSpec = [
 ];
 test.argOptsSpec = {
   debug: {flag: true, help: 'print zapier detailed logs to standard out'},
-  timeout: {help: 'add a default timeout to mocha, in milliseconds'},
+  timeout: {help: 'set test-case timeout in milliseconds [2000]'},
+  grep: {help: 'only run tests matching pattern'},
   'skip-validate': {flag: true, help: 'forgo running `zapier validate` before `npm test`'},
 };
 test.help = 'Tests your app via `npm test`.';