Chrome-side patch for IsAppInstalled.

content/public/android/junit/src/org/chromium/content/browser/installedapp/InstalledAppProviderTest.java

Index: content/public/android/junit/src/org/chromium/content/browser/installedapp/InstalledAppProviderTest.java
diff --git a/content/public/android/junit/src/org/chromium/content/browser/installedapp/InstalledAppProviderTest.java b/content/public/android/junit/src/org/chromium/content/browser/installedapp/InstalledAppProviderTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..abb710b0f748a81c7c53671e768014cee9ab4ec5
--- /dev/null
+++ b/content/public/android/junit/src/org/chromium/content/browser/installedapp/InstalledAppProviderTest.java
@@ -0,0 +1,178 @@
+// 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.content.browser.installedapp;
+
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.res.AssetManager;
+import android.content.res.Resources;
+
+import org.chromium.base.test.util.Feature;
+import org.chromium.mojom.content.RelatedApplication;
+import org.chromium.testing.local.LocalRobolectricTestRunner;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.robolectric.Robolectric;
+import org.robolectric.annotation.Config;
+import org.robolectric.res.builder.RobolectricPackageManager;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+
+
+/**
+ * Ensure that the InstalledAppProvider returns the correct apps.
+ */
+@RunWith(LocalRobolectricTestRunner.class)
+@Config(manifest = Config.NONE)
+public class InstalledAppProviderTest {
+    private FakePackageManager mPackageManager;
+    private InstalledAppProviderImpl mInstalledAppProvider;
+
+    /**
+     * FakePackageManager allows for the "installation" of Android package names
+     * and setting up Resources for installed packages.
+     */
+    public class FakePackageManager extends RobolectricPackageManager {
+        HashMap<String, Resources> mResourceMap;
+
+        public FakePackageManager() {
+            mResourceMap = new HashMap<String, Resources>();
+        }
+
+        @Override
+        public Resources getResourcesForApplication(String appPackageName)
+                throws NameNotFoundException {
+            return mResourceMap.get(appPackageName);
+        }
+
+        public void setResourcesForTest(String packageName, Resources resources) {
+            mResourceMap.put(packageName, resources);
+        }
+
+        public void installPackage(String packageName) {
+            PackageInfo info = new PackageInfo();
+            info.packageName = packageName;
+            addPackage(info);
+        }
+    }
+
+    /**
+     * MockResources allow us to define a pre-defined String array which is
+     * returned when a resource from a package is requested. In this case,
+     * this allows us to define site relationships.
+     */
+    public class MockResources extends Resources {
+        String[] mFakeStrings;
+        public MockResources(String[] array) {
+            super(new AssetManager(), null, null);
+            mFakeStrings = array;
+        }
+
+        @Override
+        public int getIdentifier(String name, String defType, String defPackage) {
+            if (mFakeStrings == null) {
+                return 0;
+            }
+            return 1;
+        }
+
+        @Override
+        public String[] getStringArray(int identifier) {
+            return mFakeStrings;
+        }
+    }
+
+    private void addSiteAssociation(String url, String packageName) {
+        String association = "{\"relation\": [\"delegate_permission/common.handle_all_urls\"],"
+                + "\"target\": {\"namespace\": \"web\", \"site\": \"" + url + "\"}}";
+        MockResources fr = new MockResources(new String[] {association});
+        mPackageManager.setResourcesForTest(packageName, fr);
+    }
+
+    private RelatedApplication createRelatedApplication(String platform, String id, String url) {
+        RelatedApplication realApplication = new RelatedApplication();
+        realApplication.platform = platform;
+        realApplication.id = id;
+        realApplication.url = url;
+        return realApplication;
+    }
+
+    @Before
+    public void setUp() {
+        mPackageManager = new FakePackageManager();
+        Robolectric.packageManager = mPackageManager;
+        mInstalledAppProvider = new InstalledAppProviderImpl(Robolectric.application);
+    }
+
+    @Test
+    @Feature({"InstalledApp"})
+    public void testOneInstalledRelatedApplication() throws Exception {
+        mPackageManager.installPackage("com.real.package");
+        addSiteAssociation("http://localhost:8000/", "com.real.package");
+
+        RelatedApplication realApplication =
+                createRelatedApplication("play", "com.real.package", "");
+        RelatedApplication installedAppsArray[] = new RelatedApplication[1];
+        installedAppsArray[0] = realApplication;
+
+        RelatedApplication[] installedApplications =
+                mInstalledAppProvider.filterAndroidInstalledApps(
+                        installedAppsArray, "http://localhost:8000/");
+
+        Assert.assertEquals(installedApplications.length, 1);
+        Assert.assertEquals(installedApplications[0], realApplication);
+    }
+
+    @Test
+    @Feature({"InstalledApp"})
+    public void testExtraInstalledApplication() throws Exception {
+        RelatedApplication realApplication =
+                createRelatedApplication("play", "com.real.package", "");
+        RelatedApplication installedAppsArray[] = new RelatedApplication[1];
+        installedAppsArray[0] = realApplication;
+
+        mPackageManager.installPackage("com.real.package");
+        mPackageManager.installPackage("com.different.package");
+        addSiteAssociation("http://localhost:8000/", "com.real.package");
+        addSiteAssociation("http://localhost:8000/", "com.different.package");
+
+        RelatedApplication[] installedApplications =
+                mInstalledAppProvider.filterAndroidInstalledApps(
+                        installedAppsArray, "http://localhost:8000/");
+        Assert.assertEquals(installedApplications.length, 1);
+        Assert.assertEquals(installedApplications[0], realApplication);
+    }
+
+    @Test
+    @Feature({"InstalledApp"})
+    public void testMultipleInstalledRelatedApplications() throws Exception {
+        ArrayList<RelatedApplication> manifestRelatedApplications =
+                new ArrayList<RelatedApplication>();
+        manifestRelatedApplications.add(createRelatedApplication("play", "com.real.package", ""));
+        manifestRelatedApplications.add(createRelatedApplication("play", "com.other.package", ""));
+        manifestRelatedApplications.add(
+                createRelatedApplication("itunes", "com.other.package", ""));
+
+        mPackageManager.installPackage("com.real.package");
+        mPackageManager.installPackage("com.different.package");
+        addSiteAssociation("http://localhost:8000/", "com.real.package");
+        addSiteAssociation("http://localhost:8000/", "com.other.package");
+
+        RelatedApplication[] relatedApplications =
+                new RelatedApplication[manifestRelatedApplications.size()];
+        manifestRelatedApplications.toArray(relatedApplications);
+        RelatedApplication[] installedApplications =
+                mInstalledAppProvider.filterAndroidInstalledApps(
+                        relatedApplications, "http://localhost:8000/");
+        Assert.assertTrue(installedApplications.length == 2);
+        Assert.assertEquals(installedApplications[0], manifestRelatedApplications.get(0));
+        Assert.assertEquals(installedApplications[1], manifestRelatedApplications.get(1));
+    }
+}