Restrict Printing Settings

- Don't show Printing Settings if the user is restricted by UserManager.DISALLOW_PRINTING

Bug: 269122009
Test: manual test
atest -c PrintSettingsFragmentTest

Change-Id: I15db778ebc4de3c8a76505043fab1ee02db3f290

tests/unit/src/com/android/settings/print/PrintSettingsFragmentTest.java

@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2023 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.print;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+
+import android.content.Context;
+import android.os.Looper;
+import android.view.View;
+
+import androidx.preference.PreferenceManager;
+import androidx.preference.PreferenceScreen;
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.platform.app.InstrumentationRegistry;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Spy;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
+
+@RunWith(AndroidJUnit4.class)
+public class PrintSettingsFragmentTest {
+    @Rule
+    public final MockitoRule mMockitoRule = MockitoJUnit.rule();
+    @Spy
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+
+    private PrintSettingsFragment mFragment;
+    private PreferenceManager mPreferenceManager;
+    private PreferenceScreen mPreferenceScreen;
+
+    @Before
+    public void setUp() {
+        if (Looper.myLooper() == null) {
+            Looper.prepare();
+        }
+        mPreferenceManager = new PreferenceManager(mContext);
+        mPreferenceScreen = mPreferenceManager.createPreferenceScreen(mContext);
+
+        InstrumentationRegistry.getInstrumentation().runOnMainSync(() -> {
+            mFragment = spy(new PrintSettingsFragment());
+            doReturn(mPreferenceScreen).when(mFragment).getPreferenceScreen();
+        });
+    }
+
+    @Test
+    public void setupPreferences_uiIsRestricted_doNotAddPreferences() {
+        mFragment.mIsUiRestricted = true;
+
+        mFragment.setupPreferences();
+
+        verify(mFragment, never()).findPreference(any(CharSequence.class));
+    }
+
+    @Test
+    public void setupEmptyViews_uiIsRestricted_doNotSetEmptyView() {
+        mFragment.mIsUiRestricted = true;
+
+        mFragment.setupEmptyViews();
+
+        verify(mFragment, never()).setEmptyView(any(View.class));
+    }
+
+    @Test
+    public void startSettings_uiIsRestricted_removeAllPreferences() {
+        mFragment.mIsUiRestricted = true;
+
+        mFragment.startSettings();
+
+        assertThat(mPreferenceScreen.getPreferenceCount()).isEqualTo(0);
+        verify(mFragment, never()).setHasOptionsMenu(true);
+    }
+}