Create ContentShellActivityTestRule and BaseJUnitRunner

content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellTestCommon.java

Index: content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellTestCommon.java
diff --git a/content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellTestCommon.java b/content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellTestCommon.java
new file mode 100644
index 0000000000000000000000000000000000000000..263723fb1ed6ed790372310d99d29597d5cca563
--- /dev/null
+++ b/content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellTestCommon.java
@@ -0,0 +1,195 @@
+// Copyright 2017 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_shell_apk;
+
+import static org.chromium.base.test.util.ScalableTimeout.scaleTimeout;
+
+import android.annotation.TargetApi;
+import android.app.Activity;
+import android.app.Instrumentation;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Build;
+import android.os.PowerManager;
+import android.text.TextUtils;
+import android.view.ViewGroup;
+
+import org.junit.Assert;
+
+import org.chromium.base.ThreadUtils;
+import org.chromium.base.test.util.CallbackHelper;
+import org.chromium.base.test.util.UrlUtils;
+import org.chromium.content.browser.ContentView;
+import org.chromium.content.browser.ContentViewCore;
+import org.chromium.content.browser.test.util.Criteria;
+import org.chromium.content.browser.test.util.CriteriaHelper;
+import org.chromium.content.browser.test.util.TestCallbackHelperContainer;
+import org.chromium.content_public.browser.LoadUrlParams;
+import org.chromium.content_public.browser.NavigationController;
+import org.chromium.content_public.browser.WebContents;
+import org.chromium.content_shell.Shell;
+
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Implementation of utility methods for ContentShellTestBase and ContentShellActivityTestRule to
+ * wrap around during instrumentation test JUnit3 to JUnit4 migration
+ *
+ * Please do not use this class' methods in places other than {@link ContentShellTestBase}
+ * and {@link ContentShellActivityTestRule}
+ */
+public final class ContentShellTestCommon {
+    /** The maximum time the waitForActiveShellToBeDoneLoading method will wait. */
+    private static final long WAIT_FOR_ACTIVE_SHELL_LOADING_TIMEOUT = scaleTimeout(10000);
+    static final long WAIT_PAGE_LOADING_TIMEOUT_SECONDS = scaleTimeout(15);
+
+    private final TestCommonCallback<ContentShellActivity> mCallback;
+
+    ContentShellTestCommon(TestCommonCallback<ContentShellActivity> callback) {
+        mCallback = callback;
+    }
+
+    @TargetApi(Build.VERSION_CODES.KITKAT_WATCH)
+    @SuppressWarnings("deprecation")
+    void assertScreenIsOn() {
+        PowerManager pm = (PowerManager) mCallback.getInstrumentationForTestCommon()
+                                  .getContext()
+                                  .getSystemService(Context.POWER_SERVICE);
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {
+            Assert.assertTrue("Many tests will fail if the screen is not on.", pm.isInteractive());
+        } else {
+            Assert.assertTrue("Many tests will fail if the screen is not on.", pm.isScreenOn());
+        }
+    }
+
+    ContentShellActivity launchContentShellWithUrl(String url) {
+        Intent intent = new Intent(Intent.ACTION_MAIN);
+        intent.addCategory(Intent.CATEGORY_LAUNCHER);
+        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        if (url != null) intent.setData(Uri.parse(url));
+        intent.setComponent(
+                new ComponentName(mCallback.getInstrumentationForTestCommon().getTargetContext(),
+                        ContentShellActivity.class));
+        return mCallback.launchActivityWithIntentForTestCommon(intent);
+    }
+
+    // TODO(yolandyan): This should use the url exactly without the getIsolatedTestFileUrl call.
+    void launchContentShellWithUrlSync(String url) {
+        String isolatedTestFileUrl = UrlUtils.getIsolatedTestFileUrl(url);
+        launchContentShellWithUrl(isolatedTestFileUrl);
+        Assert.assertNotNull(mCallback.getActivityForTestCommon());
+        waitForActiveShellToBeDoneLoading();
+        Assert.assertEquals(isolatedTestFileUrl, getContentViewCore().getWebContents().getUrl());
+    }
+
+    void waitForActiveShellToBeDoneLoading() {
+        // Wait for the Content Shell to be initialized.
+        CriteriaHelper.pollUiThread(new Criteria() {
+            @Override
+            public boolean isSatisfied() {
+                Shell shell = mCallback.getActivityForTestCommon().getActiveShell();
+                // There are two cases here that need to be accounted for.
+                // The first is that we've just created a Shell and it isn't
+                // loading because it has no URL set yet.  The second is that
+                // we've set a URL and it actually is loading.
+                if (shell == null) {
+                    updateFailureReason("Shell is null.");
+                    return false;
+                }
+                if (shell.isLoading()) {
+                    updateFailureReason("Shell is still loading.");
+                    return false;
+                }
+                if (TextUtils.isEmpty(shell.getContentViewCore().getWebContents().getUrl())) {
+                    updateFailureReason("Shell's URL is empty or null.");
+                    return false;
+                }
+                return true;
+            }
+        }, WAIT_FOR_ACTIVE_SHELL_LOADING_TIMEOUT, CriteriaHelper.DEFAULT_POLLING_INTERVAL);
+    }
+
+    ContentViewCore getContentViewCore() {
+        return mCallback.getActivityForTestCommon().getActiveShell().getContentViewCore();
+    }
+
+    WebContents getWebContents() {
+        return mCallback.getActivityForTestCommon().getActiveShell().getWebContents();
+    }
+
+    void loadUrl(final NavigationController navigationController,
+            TestCallbackHelperContainer callbackHelperContainer, final LoadUrlParams params)
+            throws Throwable {
+        handleBlockingCallbackAction(
+                callbackHelperContainer.getOnPageFinishedHelper(), new Runnable() {
+                    @Override
+                    public void run() {
+                        navigationController.loadUrl(params);
+                    }
+                });
+    }
+
+    Shell loadNewShell(final String url) throws ExecutionException {
+        Shell shell = ThreadUtils.runOnUiThreadBlocking(new Callable<Shell>() {
+            @Override
+            public Shell call() {
+                mCallback.getActivityForTestCommon().getShellManager().launchShell(url);
+                return mCallback.getActivityForTestCommon().getActiveShell();
+            }
+        });
+        Assert.assertNotNull("Unable to create shell.", shell);
+        Assert.assertEquals("Active shell unexpected.", shell,
+                mCallback.getActivityForTestCommon().getActiveShell());
+        waitForActiveShellToBeDoneLoading();
+        return shell;
+    }
+
+    void handleBlockingCallbackAction(CallbackHelper callbackHelper, Runnable uiThreadAction)
+            throws Throwable {
+        int currentCallCount = callbackHelper.getCallCount();
+        mCallback.runOnUiThreadForTestCommon(uiThreadAction);
+        callbackHelper.waitForCallback(
+                currentCallCount, 1, WAIT_PAGE_LOADING_TIMEOUT_SECONDS, TimeUnit.SECONDS);
+    }
+
+    void assertWaitForPageScaleFactorMatch(float expectedScale) {
+        CriteriaHelper.pollInstrumentationThread(
+                Criteria.equals(expectedScale, new Callable<Float>() {
+                    @Override
+                    public Float call() {
+                        return getContentViewCore().getScale();
+                    }
+                }));
+    }
+
+    void replaceContainerView() throws Throwable {
+        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
+            @Override
+            public void run() {
+                ContentView cv = ContentView.createContentView(
+                        mCallback.getActivityForTestCommon(), getContentViewCore());
+                ((ViewGroup) getContentViewCore().getContainerView().getParent()).addView(cv);
+                getContentViewCore().setContainerView(cv);
+                getContentViewCore().setContainerViewInternals(cv);
+                cv.requestFocus();
+            }
+        });
+    }
+
+    /**
+     * Interface used by TestRule and TestBase class to implement methods for TestCommonCallback
+     * class to use.
+     */
+    public static interface TestCommonCallback<T extends Activity> {
+        Instrumentation getInstrumentationForTestCommon();
+        T launchActivityWithIntentForTestCommon(Intent t);
+        T getActivityForTestCommon();
+        void runOnUiThreadForTestCommon(Runnable runnable) throws Throwable;
+    }
+}