Java versions of BlimpContents[,Observer] and BlimpNavigationController

blimp/client/app/android/javatests/src/org/chromium/blimp/core/BlimpContentsTest.java

Index: blimp/client/app/android/javatests/src/org/chromium/blimp/core/BlimpContentsTest.java
diff --git a/blimp/client/app/android/javatests/src/org/chromium/blimp/core/BlimpContentsTest.java b/blimp/client/app/android/javatests/src/org/chromium/blimp/core/BlimpContentsTest.java
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index 0000000000000000000000000000000000000000..0bd541b9c63a50c39fe1a0d3b9efa4ede3d21165
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@@ -0,0 +1,93 @@
+// 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.blimp.core;
+
+import android.test.suitebuilder.annotation.SmallTest;
+
+import org.chromium.base.ThreadUtils;
+import org.chromium.blimp.BlimpNativeInstrumentationTestCase;
+import org.chromium.blimp.core_public.BlimpContents;
+import org.chromium.blimp.core_public.BlimpNavigationController;
+import org.chromium.blimp.core_public.EmptyBlimpContentsObserver;
+
+import java.util.concurrent.atomic.AtomicReference;
+
+/**
+ * Tests the basic behavior of a {@link BlimpContents}.
+ */
+public class BlimpContentsTest extends BlimpNativeInstrumentationTestCase {
+    private static final String EXAMPLE_URL = "https://www.example.com/";
+    private static final String OTHER_EXAMPLE_URL = "https://www.otherexample.com/";
+
+    private static class TestBlimpContentsObserver extends EmptyBlimpContentsObserver {
+        public String url;
+        @Override
+        public void onUrlUpdated(String url) {
+            this.url = url;
+        }
+    }
+
+    private static void runUntilIdle() {
+        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
+            @Override
+            public void run() {}
+        });
+    }
+
+    @SmallTest
+    public void testBasic() throws InterruptedException {
+        waitUntilNativeIsReady();
+
+        final AtomicReference<BlimpContents> blimpContents = new AtomicReference<>();
+        final AtomicReference<BlimpNavigationController> navigationController =
+                new AtomicReference<>();
+        final AtomicReference<TestBlimpContentsObserver> observer1 = new AtomicReference<>();
+        final AtomicReference<TestBlimpContentsObserver> observer2 = new AtomicReference<>();
+        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
+            @Override
+            public void run() {
+                blimpContents.set(BlimpContentsFactory.createBlimpContents());
+                navigationController.set(blimpContents.get().getNavigationController());
+                observer1.set(new TestBlimpContentsObserver());
+                observer2.set(new TestBlimpContentsObserver());
+                blimpContents.get().addObserver(observer1.get());
+                blimpContents.get().addObserver(observer2.get());
+
+                navigationController.get().loadUrl(EXAMPLE_URL);
+            }
+        });
+
+        runUntilIdle();
+
+        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
+            @Override
+            public void run() {
+                assertEquals(EXAMPLE_URL, navigationController.get().getUrl());
+                assertEquals(EXAMPLE_URL, observer1.get().url);
+                assertEquals(EXAMPLE_URL, observer2.get().url);
+
+                // Observer should no longer receive callbacks.
+                blimpContents.get().removeObserver(observer1.get());
+
+                navigationController.get().loadUrl(OTHER_EXAMPLE_URL);
+            }
+        });
+
+        runUntilIdle();
+
+        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
+            @Override
+            public void run() {
+                assertEquals(OTHER_EXAMPLE_URL, navigationController.get().getUrl());
+                assertEquals(EXAMPLE_URL, observer1.get().url);
+                assertEquals(OTHER_EXAMPLE_URL, observer2.get().url);
+
+                blimpContents.get().destroy();
+            }
+        });
+
+        runUntilIdle();
+    }
+}