CompareHelper.java

/*
 * Copyright 2016 Google Inc.
 *
 * 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.google.android.libraries.remixer.serialization;

import com.google.android.libraries.remixer.ItemListVariable;
import com.google.android.libraries.remixer.RangeVariable;
import com.google.android.libraries.remixer.Variable;
import java.util.List;
import org.junit.Assert;

public class CompareHelper {

  public static <T> void assertEqualsVariable(StoredVariable<T> storage, Variable<T> variable) {
    assertConsistent(storage, variable);
    Assert.assertEquals(variable.getSelectedValue(), storage.selectedValue);
    Assert.assertNull(storage.limitedToValues);
    Assert.assertNull(storage.minValue);
    Assert.assertNull(storage.maxValue);
    Assert.assertNull(storage.increment);
  }

  public static <SerializableType, RuntimeType> void assertEqualsItemListVariable(
      StoredVariable<SerializableType> storage, ItemListVariable<RuntimeType> variable) {
    assertConsistent(storage, variable);
    List<RuntimeType> runtimeList = variable.getLimitedToValues();
    List<SerializableType> serializableList = storage.getLimitedToValues();
    Assert.assertNotNull(runtimeList);
    Assert.assertNotNull(serializableList);
    Assert.assertEquals(runtimeList.size(), serializableList.size());
    ValueConverter<RuntimeType, SerializableType> converter = variable.getDataType().getConverter();
    for (int i = 0; i < runtimeList.size(); i++) {
      Assert.assertEquals(converter.fromRuntimeType(runtimeList.get(i)), serializableList.get(i));
    }
    Assert.assertEquals(
        variable.getSelectedValue(), converter.toRuntimeType(storage.selectedValue));
    Assert.assertNull(storage.minValue);
    Assert.assertNull(storage.maxValue);
    Assert.assertNull(storage.increment);
  }

  public static <T extends Number> void assertEqualsRangeVariable(
      StoredVariable<T> storage, RangeVariable variable) {
    assertConsistent(storage, variable);
    Assert.assertEquals(variable.getSelectedValue(), storage.selectedValue);
    Assert.assertNull(storage.limitedToValues);
    Assert.assertEquals(variable.getMinValue(), storage.minValue);
    Assert.assertEquals(variable.getMaxValue(), storage.maxValue);
    Assert.assertEquals(variable.getIncrement(), storage.increment);
  }

  private static void assertConsistent(StoredVariable storage, Variable item) {
    Assert.assertEquals(item.getKey(), storage.key);
    Assert.assertEquals(item.getTitle(), storage.title);
    Assert.assertEquals(item.getSerializableConstraints(), storage.constraintType);
  }
}