[WebAPKs] Compute the default scope from the manifest start URL.

chrome/android/junit/src/org/chromium/chrome/browser/webapps/WebApkInfoTest.java

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.webapps;
 
 import android.content.Intent;
 import android.os.Bundle;
 
 import org.junit.Assert;
@@ skipping 111 matching lines @@
 
         WebApkInfo info = WebApkInfo.create(intent);
         Assert.assertEquals(intentStartUrl, info.uri().toString());
 
         // {@link WebApkInfo#manifestStartUrl()} should contain the start URL from the Android
         // Manifest.
         Assert.assertEquals(START_URL, info.manifestStartUrl());
     }
 
     /**
+     * Test that if the scope is empty that the scope is computed from the "start URL specified from
+     * the Web Manifest" not the "URL the WebAPK initially navigated to". Deep links can open a
+     * WebAPK at an arbitrary URL.
+     */
+    @Test
+    public void testDefaultScopeFromManifestStartUrl() {
+        String manifestStartUrl = START_URL;
+        String intentStartUrl = "https://www.google.com/a/b/c";
+
+        String scopeFromManifestStartUrl = ShortcutHelper.getScopeFromUrl(manifestStartUrl);
+        String scopeFromIntentStartUrl = ShortcutHelper.getScopeFromUrl(intentStartUrl);
+        Assert.assertNotEquals(scopeFromManifestStartUrl, scopeFromIntentStartUrl);
+
+        Bundle bundle = new Bundle();
+        bundle.putString(WebApkMetaDataKeys.START_URL, manifestStartUrl);
+        bundle.putString(WebApkMetaDataKeys.SCOPE, "");
+        WebApkTestHelper.registerWebApkWithMetaData(bundle);
+
+        Intent intent = new Intent();
+        intent.putExtra(
+                ShortcutHelper.EXTRA_WEBAPK_PACKAGE_NAME, WebApkTestHelper.WEBAPK_PACKAGE_NAME);
+        intent.putExtra(ShortcutHelper.EXTRA_URL, intentStartUrl);
+
+        WebApkInfo info = WebApkInfo.create(intent);
+        Assert.assertEquals(scopeFromManifestStartUrl, info.scopeUri().toString());
+    }
+
+    /**
      * Test that {@link WebApkInfo#create} can read multiple icon URLs and multiple icon murmur2
      * hashes from the WebAPK's meta data.
      */
     @Test
     public void testGetIconUrlAndMurmur2HashFromMetaData() {
         String iconUrl1 = "/icon1.png";
         String murmur2Hash1 = "1";
         String iconUrl2 = "/icon2.png";
         String murmur2Hash2 = "2";
 
         Bundle bundle = new Bundle();
+        bundle.putString(WebApkMetaDataKeys.START_URL, START_URL);
         bundle.putString(WebApkMetaDataKeys.ICON_URLS_AND_ICON_MURMUR2_HASHES,
                 iconUrl1 + " " + murmur2Hash1 + " " + iconUrl2 + " " + murmur2Hash2);
         WebApkTestHelper.registerWebApkWithMetaData(bundle);
         Intent intent = new Intent();
         intent.putExtra(
                 ShortcutHelper.EXTRA_WEBAPK_PACKAGE_NAME, WebApkTestHelper.WEBAPK_PACKAGE_NAME);
         intent.putExtra(ShortcutHelper.EXTRA_URL, START_URL);
 
         WebApkInfo info = WebApkInfo.create(intent);
         Map<String, String> iconUrlToMurmur2HashMap = info.iconUrlToMurmur2HashMap();
         Assert.assertEquals(2, iconUrlToMurmur2HashMap.size());
         Assert.assertEquals(murmur2Hash1, iconUrlToMurmur2HashMap.get(iconUrl1));
         Assert.assertEquals(murmur2Hash2, iconUrlToMurmur2HashMap.get(iconUrl2));
     }
 
     /**
      * WebApkIconHasher generates hashes with values [0, 2^64-1]. 2^64-1 is greater than
      * {@link Long#MAX_VALUE}. Test that {@link WebApkInfo#create()} can read a hash with value
      * 2^64 - 1.
      */
     @Test
     public void testGetIconMurmur2HashFromMetaData() {
         String hash = "18446744073709551615"; // 2^64 - 1
 
         Bundle bundle = new Bundle();
+        bundle.putString(WebApkMetaDataKeys.START_URL, START_URL);
         bundle.putString(WebApkMetaDataKeys.ICON_URLS_AND_ICON_MURMUR2_HASHES, "randomUrl " + hash);
         WebApkTestHelper.registerWebApkWithMetaData(bundle);
         Intent intent = new Intent();
         intent.putExtra(
                 ShortcutHelper.EXTRA_WEBAPK_PACKAGE_NAME, WebApkTestHelper.WEBAPK_PACKAGE_NAME);
         intent.putExtra(ShortcutHelper.EXTRA_URL, START_URL);
 
         WebApkInfo info = WebApkInfo.create(intent);
         Map<String, String> iconUrlToMurmur2HashMap = info.iconUrlToMurmur2HashMap();
         Assert.assertEquals(1, iconUrlToMurmur2HashMap.size());
         Assert.assertTrue(iconUrlToMurmur2HashMap.containsValue(hash));
     }
 }