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/**
* Copyright (c) 2016, The CyanogenMod 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 org.cyanogenmod.tests.util;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.drawable.BitmapDrawable;
import android.test.AndroidTestCase;
import android.util.MathUtils;
import cyanogenmod.util.ColorUtils;
public class ColorUtilTest extends AndroidTestCase {
private ColorUtils mColorUtils;
@Override
protected void setUp() throws Exception {
super.setUp();
mColorUtils = new ColorUtils();
}
public void testDropAlpha() {
// With pre-existing alpha
int color = 0xBBCCDD;
int alpha = 0xAA000000;
int result = mColorUtils.dropAlpha(color | alpha);
// Assert alpha was removed
assertEquals(Color.alpha(result), 0);
// Ensure color is preserved
assertEquals(result & color, color);
// Without pre-existing alpha
color = Color.argb(0, 100, 200 ,300);
result = mColorUtils.dropAlpha(color);
// Assert alpha was removed
assertEquals(Color.alpha(result), 0);
// Ensure color is preserved
assertEquals(result, color);
}
public void testGenerateAlertColorFromDrawable() {
// Test null drawable
int color = mColorUtils.generateAlertColorFromDrawable(null);
assertEquals(color, Color.BLACK);
Bitmap bitmap = Bitmap.createBitmap(10, 10, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
canvas.drawColor(Color.RED);
// Test fully red bitmap
BitmapDrawable bitmapDrawable = new BitmapDrawable(bitmap);
color = mColorUtils.generateAlertColorFromDrawable(bitmapDrawable);
assertEquals(color, Color.RED);
// Test blue/red bitmap with blue dominating
Paint p = new Paint();
p.setColor(Color.BLUE);
p.setStyle(Paint.Style.FILL_AND_STROKE);
canvas.drawRect(0, 0, 8, 8, p);
color = mColorUtils.generateAlertColorFromDrawable(bitmapDrawable);
assertEquals(color, Color.BLUE);
// Test large white + small blue scenario
canvas.drawColor(Color.WHITE);
canvas.drawRect(0, 0, 2, 2, p);
color = mColorUtils.generateAlertColorFromDrawable(bitmapDrawable);
assertEquals(color, Color.BLUE);
// Test large white + small black scenario
canvas.drawColor(Color.WHITE);
p.setColor(Color.BLACK);
canvas.drawRect(0, 0, 2, 2, p);
color = mColorUtils.generateAlertColorFromDrawable(bitmapDrawable);
assertEquals(color, Color.WHITE);
assertEquals(bitmap.isRecycled(), false);
bitmap.recycle();
}
}
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