Log visibility change for DialogCreatable in Settings.

Bug: 30681529
Test: adb logcat -b events | egrep "(sysui_|notification_)"
Test: make RunSettingsRoboTests
Change-Id: I51754d258ba1ddfae24323681f21cd02de4dbb4e

tests/robotests/src/com/android/settings/SettingsDialogFragmentTest.java

@@ -0,0 +1,88 @@
+/*
+ * 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;
+
+import android.app.Dialog;
+import android.app.Fragment;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.annotation.Config;
+
+import static org.junit.Assert.fail;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@RunWith(RobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class SettingsDialogFragmentTest {
+
+    private static final int DIALOG_ID = 15;
+
+    @Mock
+    private DialogCreatableFragment mDialogCreatable;
+    private SettingsPreferenceFragment.SettingsDialogFragment mDialogFragment;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+    }
+
+    @Test
+    public void testGetMetrics_shouldGetMetricFromDialogCreatable() {
+        when(mDialogCreatable.getDialogMetricsCategory(DIALOG_ID)).thenReturn(1);
+
+        mDialogFragment =
+                new SettingsPreferenceFragment.SettingsDialogFragment(mDialogCreatable, DIALOG_ID);
+        mDialogFragment.getMetricsCategory();
+
+        // getDialogMetricsCategory called in constructor, and explicitly in test.
+        verify(mDialogCreatable, times(2)).getDialogMetricsCategory(DIALOG_ID);
+    }
+
+    @Test
+    public void testGetInvalidMetricsValue_shouldCrash() {
+        when(mDialogCreatable.getDialogMetricsCategory(DIALOG_ID)).thenReturn(-1);
+
+        try {
+            mDialogFragment = new SettingsPreferenceFragment.SettingsDialogFragment(
+                    mDialogCreatable, DIALOG_ID);
+        } catch (IllegalStateException e) {
+            // getDialogMetricsCategory called in constructor
+            verify(mDialogCreatable).getDialogMetricsCategory(DIALOG_ID);
+            return;
+        }
+        fail("Should fail with IllegalStateException");
+    }
+
+    public static class DialogCreatableFragment extends Fragment implements DialogCreatable {
+
+        @Override
+        public Dialog onCreateDialog(int dialogId) {
+            return null;
+        }
+
+        @Override
+        public int getDialogMetricsCategory(int dialogId) {
+            return 0;
+        }
+    }
+}