customtabs: UMA histogram tracking whether clients call warmup().

chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/ClientManagerTest.java

+// Copyright 2015 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.customtabs;
+
+import android.content.Context;
+import android.os.IBinder;
+import android.os.Process;
+import android.support.customtabs.ICustomTabsCallback;
+import android.test.InstrumentationTestCase;
+import android.test.suitebuilder.annotation.SmallTest;
+
+/** Tests for ClientManager. */
+public class ClientManagerTest extends InstrumentationTestCase {
+    private static final String URL = "https://www.android.com";
+    private ClientManager mClientManager;
+    private ICustomTabsCallback mCallback = new CustomTabsTestUtils.DummyCallback();
+    private IBinder mSession = mCallback.asBinder();
+    private int mUid = Process.myUid();
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        Context context = getInstrumentation().getTargetContext().getApplicationContext();
+        mClientManager = new ClientManager(context);
+    }
+
+    @SmallTest
+    public void testNoSessionNoWarmup() {
+        assertEquals(ClientManager.NO_SESSION_NO_WARMUP, mClientManager.getWarmupState(null));
+    }
+
+    @SmallTest
+    public void testNoSessionWarmup() {
+        mClientManager.recordUidHasCalledWarmup(mUid);
+        assertEquals(ClientManager.NO_SESSION_WARMUP, mClientManager.getWarmupState(null));
+    }
+
+    @SmallTest
+    public void testInvalidSessionNoWarmup() {
+        assertEquals(ClientManager.NO_SESSION_NO_WARMUP, mClientManager.getWarmupState(mSession));
+    }
+
+    @SmallTest
+    public void testInvalidSessionWarmup() {
+        mClientManager.recordUidHasCalledWarmup(mUid);
+        assertEquals(ClientManager.NO_SESSION_WARMUP, mClientManager.getWarmupState(mSession));
+    }
+
+    @SmallTest
+    public void testValidSessionNoWarmup() {
+        mClientManager.newSession(mCallback, mUid, null);
+        assertEquals(ClientManager.SESSION_NO_WARMUP_NOT_CALLED,
+                mClientManager.getWarmupState(mSession));
+    }
+
+    @SmallTest
+    public void testValidSessionOtherWarmup() {
+        mClientManager.recordUidHasCalledWarmup(mUid + 1);
+        mClientManager.newSession(mCallback, mUid, null);
+        assertEquals(ClientManager.SESSION_NO_WARMUP_ALREADY_CALLED,
+                mClientManager.getWarmupState(mSession));
+    }
+
+    @SmallTest
+    public void testValidSessionWarmup() {
+        mClientManager.recordUidHasCalledWarmup(mUid);
+        mClientManager.newSession(mCallback, mUid, null);
+        assertEquals(ClientManager.SESSION_WARMUP, mClientManager.getWarmupState(mSession));
+    }
+
+    @SmallTest
+    public void testValidSessionWarmupSeveralCalls() {
+        mClientManager.recordUidHasCalledWarmup(mUid);
+        mClientManager.newSession(mCallback, mUid, null);
+        assertEquals(ClientManager.SESSION_WARMUP, mClientManager.getWarmupState(mSession));
+
+        ICustomTabsCallback callback = new CustomTabsTestUtils.DummyCallback();
+        IBinder session = callback.asBinder();
+        mClientManager.newSession(callback, mUid, null);
+        assertEquals(ClientManager.SESSION_WARMUP, mClientManager.getWarmupState(session));
+    }
+}