Setup ToggleScreenMagnificationPreferenceFragmentForSetupWizard test infrastructure

Bug: 197695932
Test: make RunSettingsRoboTests ROBOTEST_FILTER=ToggleScreenMagnificationPreferenceFragmentForSetupWizardTest
Change-Id: I5715feb355bace402043f82f0eb09b96fa3810cf

tests/robotests/src/com/android/settings/accessibility/ToggleScreenMagnificationPreferenceFragmentForSetupWizardTest.java

@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2022 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.accessibility;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceManager;
+import androidx.preference.PreferenceScreen;
+import androidx.preference.SwitchPreference;
+import androidx.test.core.app.ApplicationProvider;
+
+import com.android.settings.R;
+import com.android.settings.SettingsActivity;
+import com.android.settings.testutils.shadow.ShadowSettingsPreferenceFragment;
+import com.android.settings.widget.SettingsMainSwitchBar;
+import com.android.settingslib.widget.TopIntroPreference;
+
+import com.google.android.setupdesign.GlifPreferenceLayout;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.annotation.Config;
+
+/**
+ * Tests for {@link ToggleScreenMagnificationPreferenceFragmentForSetupWizard}.
+ */
+@RunWith(RobolectricTestRunner.class)
+@Config(shadows = {ShadowSettingsPreferenceFragment.class})
+public class ToggleScreenMagnificationPreferenceFragmentForSetupWizardTest {
+
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+    @Rule
+    public MockitoRule mMockitoRule = MockitoJUnit.rule();
+    @Mock
+    private SettingsActivity mActivity;
+    @Mock
+    private GlifPreferenceLayout mGlifLayoutView;
+    @Mock
+    private SettingsMainSwitchBar mSwitchBar;
+    private ToggleScreenMagnificationPreferenceFragmentForSetupWizard mFragment;
+
+    @Before
+    public void setUp() {
+        mFragment =
+                spy(new TestToggleScreenMagnificationPreferenceFragmentForSetupWizard(mContext));
+        doReturn(mActivity).when(mFragment).getActivity();
+        when(mActivity.getSwitchBar()).thenReturn(mSwitchBar);
+    }
+
+    @Test
+    public void onViewCreated_verifyAction() {
+        mFragment.onViewCreated(mGlifLayoutView, null);
+
+        verify(mGlifLayoutView).setHeaderText(
+                mContext.getString(R.string.accessibility_screen_magnification_title));
+        verify(mGlifLayoutView).setDescriptionText(
+                mContext.getString(R.string.accessibility_screen_magnification_intro_text));
+        verify(mGlifLayoutView).setDividerInsets(Integer.MAX_VALUE, 0);
+        assertThat(mFragment.mTopIntroPreference.isVisible()).isFalse();
+        assertThat(mFragment.mSettingsPreference.isVisible()).isFalse();
+        assertThat(mFragment.mFollowingTypingSwitchPreference.isVisible()).isFalse();
+    }
+
+    private static class TestToggleScreenMagnificationPreferenceFragmentForSetupWizard
+            extends ToggleScreenMagnificationPreferenceFragmentForSetupWizard {
+
+        private final Context mContext;
+        private final PreferenceManager mPreferenceManager;
+
+        TestToggleScreenMagnificationPreferenceFragmentForSetupWizard(Context context) {
+            super();
+            mContext = context;
+            mPreferenceManager = new PreferenceManager(context);
+            mPreferenceManager.setPreferences(mPreferenceManager.createPreferenceScreen(context));
+            mTopIntroPreference = new TopIntroPreference(context);
+            mSettingsPreference = new Preference(context);
+            mFollowingTypingSwitchPreference = new SwitchPreference(context);
+        }
+
+        @Override
+        public int getPreferenceScreenResId() {
+            return R.xml.placeholder_prefs;
+        }
+
+        @Override
+        public PreferenceScreen getPreferenceScreen() {
+            return mPreferenceManager.getPreferenceScreen();
+        }
+
+        @Override
+        public PreferenceManager getPreferenceManager() {
+            return mPreferenceManager;
+        }
+
+        @Override
+        public Context getContext() {
+            return mContext;
+        }
+    }
+}