com/android/setupwizardlib/test/ItemLayoutTest.java

/*
 * 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.setupwizardlib.test;

import static android.support.test.InstrumentationRegistry.getTargetContext;
import static org.junit.Assert.assertNotNull;

import android.content.Context;
import android.view.ContextThemeWrapper;
import android.view.LayoutInflater;
import android.widget.FrameLayout;
import android.support.test.filters.SmallTest;
import com.android.setupwizardlib.R;
import com.android.setupwizardlib.items.Item;
import java.util.ArrayList;
import java.util.List;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

/**
 * Sanity test for all the item layouts to make sure they won't crash when being inflated in
 * different themes.
 */
@RunWith(Parameterized.class)
@SmallTest
public class ItemLayoutTest {

  @Parameters
  public static Iterable<Object[]> data() {
    int[] themes =
        new int[] {
          R.style.SuwThemeMaterial_Light,
          R.style.SuwThemeMaterial,
          R.style.SuwThemeGlif_Light,
          R.style.SuwThemeGlif,
          R.style.SuwThemeGlifV2_Light,
          R.style.SuwThemeGlifV2
        };
    int[] layouts =
        new int[] {
          R.layout.suw_items_default, R.layout.suw_items_verbose, R.layout.suw_items_description
        };

    // Test all the possible combinations of themes and layouts.
    List<Object[]> params = new ArrayList<>();
    for (int theme : themes) {
      for (int layout : layouts) {
        params.add(new Object[] {theme, layout});
      }
    }
    return params;
  }

  private final Context mContext;
  private final FrameLayout mParent;
  private final Item mItem;

  public ItemLayoutTest(int theme, int layout) {
    mContext = new ContextThemeWrapper(getTargetContext(), theme);
    mParent = new FrameLayout(mContext);
    mItem = new Item();
    mItem.setLayoutResource(layout);
  }

  @Test
  public void testInflateLayoutHasBasicViews() {
    LayoutInflater.from(mContext).inflate(mItem.getLayoutResource(), mParent, true);
    mItem.onBindView(mParent);

    assertNotNull("Title should exist", mParent.findViewById(R.id.suw_items_title));
    assertNotNull("Summary should exist", mParent.findViewById(R.id.suw_items_summary));
    assertNotNull("Icon should exist", mParent.findViewById(R.id.suw_items_icon));
  }
}