Add flag to set the limit of files to be tested.

docs/configuration.md

@@ -223,6 +223,9 @@ Options:
                              continuing                                    [number] [default: 10000]
   --settings                 The Lighthouse settings and flags to use when collecting
   --numberOfRuns, -n         The number of times to run Lighthouse.            [number] [default: 3]
+  --maxAutodiscoverUrls      The maximum number of pages to collect when using the staticDistDir
+                             option with no specified URL. Disable this limit by setting to 0.                                                
+                                                                               [number] [default: 5]
 ```
 
 #### `method`

packages/cli/src/collect/collect.js

@@ -80,6 +80,12 @@ function buildCommand(yargs) {
       default: 3,
       type: 'number',
     },
+    maxAutodiscoverUrls: {
+      description:
+        'The maximum number of pages to collect when using the staticDistDir option with no specified URLs. Disable this limit by setting to 0.',
+      default: 5,
+      type: 'number',
+    },
   });
 }
 
@@ -167,7 +173,8 @@ async function startServerAndDetermineUrls(options) {
 
   const urls = urlsAsArray;
   if (!urls.length) {
-    urls.push(...server.getAvailableUrls().slice(0, 5));
+    const maxNumberOfUrls = options.maxAutodiscoverUrls || Infinity;
+    urls.push(...server.getAvailableUrls().slice(0, maxNumberOfUrls));
   }
 
   if (!urls.length) {

packages/cli/test/collect-static-dir.test.js

@@ -0,0 +1,111 @@
+/**
+ * @license Copyright 2019 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
+ */
+'use strict';
+
+jest.retryTimes(3);
+
+/* eslint-env jest */
+
+const path = require('path');
+const {runCLI} = require('./test-utils.js');
+
+describe('Lighthouse CI collect CLI', () => {
+  describe('with URLs', () => {
+    const staticDistDir = path.join(__dirname, 'fixtures/collect-static-dir-with-urls');
+    it('should collect a static dir with explicit URLs', async () => {
+      const {stdout, stderr, status} = await runCLI(
+        ['collect', '-n=1', '--staticDistDir=./', '--url=/child/grandchild.html'],
+        {
+          cwd: staticDistDir,
+        }
+      );
+      expect(stdout).toMatchInlineSnapshot(`
+        "Started a web server on port XXXX...
+        Running Lighthouse 1 time(s) on http://localhost:XXXX/child/grandchild.html
+        Run #1...done.
+        Done running Lighthouse!
+        "
+        `);
+      expect(stderr).toMatchInlineSnapshot(`""`);
+      expect(status).toEqual(0);
+    }, 180000);
+  });
+
+  describe('with autodiscover limit', () => {
+    const staticDistDir = path.join(__dirname, 'fixtures/collect-static-dir-autodiscover-limit');
+    it('should collect a single page from static dir', async () => {
+      const {stdout, stderr, status} = await runCLI(
+        ['collect', '-n=1', '--staticDistDir=./', '--maxAutodiscoverUrls=1'],
+        {
+          cwd: staticDistDir,
+        }
+      );
+      expect(stdout).toMatchInlineSnapshot(`
+          "Started a web server on port XXXX...
+          Running Lighthouse 1 time(s) on http://localhost:XXXX/board.html
+          Run #1...done.
+          Done running Lighthouse!
+          "
+          `);
+      expect(stderr).toMatchInlineSnapshot(`""`);
+      expect(status).toEqual(0);
+    }, 180000);
+
+    it('should collect all available pages from static dir', async () => {
+      const {stdout, stderr, status} = await runCLI(
+        ['collect', '-n=1', '--staticDistDir=./', '--maxAutodiscoverUrls=0'],
+        {
+          cwd: staticDistDir,
+        }
+      );
+      expect(stdout).toMatchInlineSnapshot(`
+          "Started a web server on port XXXX...
+          Running Lighthouse 1 time(s) on http://localhost:XXXX/board.html
+          Run #1...done.
+          Running Lighthouse 1 time(s) on http://localhost:XXXX/checkout.html
+          Run #1...done.
+          Running Lighthouse 1 time(s) on http://localhost:XXXX/index.html
+          Run #1...done.
+          Running Lighthouse 1 time(s) on http://localhost:XXXX/jobs.html
+          Run #1...done.
+          Running Lighthouse 1 time(s) on http://localhost:XXXX/shop.html
+          Run #1...done.
+          Running Lighthouse 1 time(s) on http://localhost:XXXX/team.html
+          Run #1...done.
+          Done running Lighthouse!
+          "
+          `);
+      expect(stderr).toMatchInlineSnapshot(`""`);
+      expect(status).toEqual(0);
+    }, 180000);
+  });
+  describe('by default', () => {
+    const staticDistDir = path.join(__dirname, 'fixtures/collect-static-dir-autodiscover-limit');
+
+    it('should collect 5 pages from static dir', async () => {
+      const {stdout, stderr, status} = await runCLI(['collect', '-n=1', '--staticDistDir=./'], {
+        cwd: staticDistDir,
+      });
+      expect(stdout).toMatchInlineSnapshot(`
+          "Started a web server on port XXXX...
+          Running Lighthouse 1 time(s) on http://localhost:XXXX/board.html
+          Run #1...done.
+          Running Lighthouse 1 time(s) on http://localhost:XXXX/checkout.html
+          Run #1...done.
+          Running Lighthouse 1 time(s) on http://localhost:XXXX/index.html
+          Run #1...done.
+          Running Lighthouse 1 time(s) on http://localhost:XXXX/jobs.html
+          Run #1...done.
+          Running Lighthouse 1 time(s) on http://localhost:XXXX/shop.html
+          Run #1...done.
+          Done running Lighthouse!
+          "
+          `);
+      expect(stderr).toMatchInlineSnapshot(`""`);
+      expect(status).toEqual(0);
+    }, 180000);
+  });
+});

packages/cli/test/fixtures/collect-static-dir-autodiscover-limit/board.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>board test page for staticDistDir usage</title>
+  </head>
+  <body>
+    test
+  </body>
+</html>

packages/cli/test/fixtures/collect-static-dir-autodiscover-limit/checkout.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>checkout test page for staticDistDir usage</title>
+  </head>
+  <body>
+    test
+  </body>
+</html>

packages/cli/test/fixtures/collect-static-dir-autodiscover-limit/index.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>index test page for staticDistDir usage</title>
+  </head>
+  <body>
+    test
+  </body>
+</html>

packages/cli/test/fixtures/collect-static-dir-autodiscover-limit/jobs.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>jobs test page for staticDistDir usage</title>
+  </head>
+  <body>
+    test
+  </body>
+</html>

packages/cli/test/fixtures/collect-static-dir-autodiscover-limit/shop.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>shop test page for staticDistDir usage</title>
+  </head>
+  <body>
+    test
+  </body>
+</html>

packages/cli/test/fixtures/collect-static-dir-autodiscover-limit/team.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>team test page for staticDistDir usage</title>
+  </head>
+  <body>
+    test
+  </body>
+</html>

types/collect.d.ts

@@ -60,6 +60,7 @@ declare global {
         headful: boolean;
         additive: boolean;
         settings?: LighthouseSettings;
+        maxAutodiscoverUrls?: number;
       }
     }
   }