Tests for launch support on default feature

Includes some espresso tests to ensure that the proper
tab is selected when you attempt to launch settings.

Bug: 30233920
Change-Id: I171293114bd84b064b333091fcf2394d44debed5

tests/app/Android.mk

@@ -7,6 +7,11 @@ LOCAL_CERTIFICATE := platform
 
 LOCAL_JAVA_LIBRARIES := android.test.runner bouncycastle
 
+LOCAL_STATIC_JAVA_LIBRARIES := \
+  android-support-test \
+  mockito-target \
+  espresso-core
+
 # Include all test java files.
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 

tests/app/AndroidManifest.xml

@@ -51,9 +51,9 @@
         </activity>
     </application>
 
-    <instrumentation android:name="android.test.InstrumentationTestRunner"
+    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
       android:targetPackage="com.android.settings"
-        android:label="Settings App Tests">
+      android:label="Settings Test Cases">
     </instrumentation>
 
     <instrumentation android:name="SettingsLaunchPerformance"

tests/app/src/com/android/settings/dashboard/TabSelectionOnLaunchTest.java

@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.settings.dashboard;
+
+import android.content.Intent;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.filters.SmallTest;
+import android.support.test.rule.ActivityTestRule;
+import android.support.test.runner.AndroidJUnit4;
+import com.android.settings.Settings;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static android.support.test.espresso.Espresso.onView;
+import static android.support.test.espresso.assertion.ViewAssertions.matches;
+import static android.support.test.espresso.matcher.ViewMatchers.isSelected;
+import static android.support.test.espresso.matcher.ViewMatchers.withText;
+import static org.hamcrest.core.IsNot.not;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class TabSelectionOnLaunchTest {
+    @Rule
+    public ActivityTestRule<Settings> mActivityRule =
+            new ActivityTestRule<>(Settings.class, true, false);
+
+    private final int FLAG_RESTART = Intent.FLAG_ACTIVITY_CLEAR_TASK|Intent.FLAG_ACTIVITY_NEW_TASK;
+    private final String ARG_SELECT_SUPPORT_TAB = "SUPPORT";
+    private final String ARG_SELECT_FAKE_TAB = "NOT_SUPPORT";
+
+    @Test
+    /* cold start for settings app with correct flags and extra always selects support tab */
+    public void test_ColdStartWithCorrectArgsCorrectFlags_SupportSelected() {
+        launchSettingsWithFlags(ARG_SELECT_SUPPORT_TAB, FLAG_RESTART);
+        verifySupportSelected();
+    }
+
+    @Test
+    /* cold start with correct flags and wrong extra defaults to all tab */
+    public void test_ColdStartWithWrongExtra_DoesNotSelectSupport() {
+        launchSettingsWithFlags(ARG_SELECT_FAKE_TAB, FLAG_RESTART);
+        verifySupportNotSelected();
+    }
+
+    @Test
+    /* warm start from elsewhere in settings with wrong flags does not select support */
+    public void test_WarmStartSummarySelectedCorrectExtraWrongFlags_DoesNotSelectSupport() {
+        InstrumentationRegistry.getContext().
+                startActivity(new Intent(android.provider.Settings.ACTION_SETTINGS));
+        launchSettingsNoFlags(ARG_SELECT_SUPPORT_TAB);
+        verifySupportNotSelected();
+    }
+
+    @Test
+    /* warm start from elsewhere in settings with with wrong flags & extra does not select support*/
+    public void test_WarmStartSummarySelectedWrongExtraWrongFlags_DoesNotSelectSupport() {
+        InstrumentationRegistry.getContext().
+                startActivity(new Intent(android.provider.Settings.ACTION_SETTINGS));
+        launchSettingsNoFlags(ARG_SELECT_FAKE_TAB);
+        verifySupportNotSelected();
+    }
+
+    @Test
+    /* settings does not crash on null string */
+    public void test_DoesNotCrashOnNullExtra_DoesNotSelectSupport() {
+        launchSettingsWithFlags(null, FLAG_RESTART);
+        verifySupportNotSelected();
+    }
+
+    private void verifySupportNotSelected() {
+        onView(withText(mActivityRule.getActivity().getApplicationContext().
+                getString(com.android.settings.R.string.page_tab_title_support))).
+                check(matches(not(isSelected())));
+    }
+
+    private void verifySupportSelected() {
+        onView(withText(mActivityRule.getActivity().getApplicationContext().
+                getString(com.android.settings.R.string.page_tab_title_support))).
+                check(matches(isSelected()));
+    }
+
+    private void launchSettingsWithFlags(String extra, int flags) {
+        Intent intent = new Intent(android.provider.Settings.ACTION_SETTINGS);
+        intent.setFlags(flags);
+        intent.putExtra(DashboardContainerFragment.EXTRA_SELECT_SETTINGS_TAB, extra);
+        mActivityRule.launchActivity(intent);
+    }
+
+    private void launchSettingsNoFlags(String extra) {
+        Intent intent = new Intent(android.provider.Settings.ACTION_SETTINGS);
+        intent.putExtra(DashboardContainerFragment.EXTRA_SELECT_SETTINGS_TAB, extra);
+        mActivityRule.launchActivity(intent);
+    }
+}

tests/unit/Android.mk

@@ -7,7 +7,10 @@ LOCAL_CERTIFICATE := platform
 
 LOCAL_JAVA_LIBRARIES := android.test.runner
 
-LOCAL_STATIC_JAVA_LIBRARIES := android-support-test mockito-target
+LOCAL_STATIC_JAVA_LIBRARIES := \
+  android-support-test \
+  mockito-target \
+  espresso-core
 
 # Include all test java files.
 LOCAL_SRC_FILES := $(call all-java-files-under, src)