MaxColorsTest.java

/*
 * Copyright (C) 2015 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 android.support.v7.graphics;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.test.InstrumentationTestCase;

/**
 * @hide
 */
public class MaxColorsTest extends InstrumentationTestCase {

    private Bitmap mSource;

    @Override
    protected void setUp() throws Exception {
        super.setUp();

        mSource = BitmapFactory.decodeResource(getInstrumentation().getContext().getResources(),
                android.R.drawable.sym_def_app_icon);
    }

    public void testMaxColorCount32() {
        testMaxColorCount(32);
    }

    public void testMaxColorCount1() {
        testMaxColorCount(1);
    }

    public void testMaxColorCount15() {
        testMaxColorCount(15);
    }

    private void testMaxColorCount(int colorCount) {
        Palette newPalette = Palette.from(mSource).maximumColorCount(colorCount).generate();
        assertTrue(newPalette.getSwatches().size() <= colorCount);
    }
}