Add test to verify regulatory info launches properly

Test: runtest --path tests/unit/src/com/android/settings/RegulatoryInfoDisplayActivityTest.java
Change-Id: I531a05bde858790819ac11c8ffcea2f6d1942ec2
Fix: 34370866

tests/unit/src/com/android/settings/RegulatoryInfoDisplayActivityTest.java

@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2017 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;
+
+import static android.support.test.espresso.Espresso.onView;
+import static android.support.test.espresso.assertion.ViewAssertions.matches;
+import static android.support.test.espresso.matcher.RootMatchers.isDialog;
+import static android.support.test.espresso.matcher.ViewMatchers.isDisplayed;
+import static android.support.test.espresso.matcher.ViewMatchers.withId;
+import static junit.framework.Assert.fail;
+
+import android.app.Instrumentation;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ResolveInfo;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class RegulatoryInfoDisplayActivityTest {
+
+    private Instrumentation mInstrumentation;
+    private Intent mRegulatoryInfoIntent;
+
+    @Before
+    public void setUp() {
+        mInstrumentation = InstrumentationRegistry.getInstrumentation();
+        mRegulatoryInfoIntent = new Intent("android.settings.SHOW_REGULATORY_INFO")
+                .addCategory(Intent.CATEGORY_DEFAULT)
+                .setPackage(mInstrumentation.getTargetContext().getPackageName());
+    }
+
+    @Test
+    public void resolveRegulatoryInfoIntent_intentShouldMatchConfig() {
+        // Load intent from PackageManager and load config from Settings app
+        final Context context = mInstrumentation.getTargetContext();
+
+        final boolean hasRegulatoryInfo = context.getResources()
+                .getBoolean(R.bool.config_show_regulatory_info);
+        final ResolveInfo resolveInfo = mInstrumentation.getTargetContext().getPackageManager()
+                .resolveActivity(mRegulatoryInfoIntent, 0 /* flags */);
+
+        // Check config and intent both enable or both disabled.
+        if (hasRegulatoryInfo && resolveInfo == null) {
+            fail("Config enables regulatory info but there is no handling intent");
+            return;
+        }
+        if (!hasRegulatoryInfo && resolveInfo != null) {
+            fail("Config disables regulatory info but there is at least one handling intent");
+            return;
+        }
+    }
+
+    @Test
+    public void launchRegulatoryInfo_shouldNotCrash() {
+        final Context context = mInstrumentation.getTargetContext();
+        final boolean hasRegulatoryInfo = context.getResources()
+                .getBoolean(R.bool.config_show_regulatory_info);
+
+        if (!hasRegulatoryInfo) {
+            return;
+        }
+        // Launch intent
+        mInstrumentation.startActivitySync(mRegulatoryInfoIntent);
+
+        onView(withId(R.id.regulatoryInfo))
+                .inRoot(isDialog())
+                .check(matches(isDisplayed()));
+    }
+
+}