BitmapTest.kt

/*
 * 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 androidx.graphics

import android.graphics.Bitmap
import android.graphics.ColorSpace
import android.support.test.filters.SdkSuppress
import org.junit.Assert.assertEquals
import org.junit.Test

class BitmapTest {
    @Test fun create() {
        val bitmap = createBitmap(7, 9)
        assertEquals(7, bitmap.width)
        assertEquals(9, bitmap.height)
        assertEquals(Bitmap.Config.ARGB_8888, bitmap.config)
    }

    @Test fun createWithConfig() {
        val bitmap = createBitmap(7, 9, config = Bitmap.Config.RGB_565)
        assertEquals(Bitmap.Config.RGB_565, bitmap.config)
    }

    @SdkSuppress(minSdkVersion = 26)
    @Test fun createWithColorSpace() {
        val colorSpace = ColorSpace.get(ColorSpace.Named.ADOBE_RGB)
        val bitmap = createBitmap(7, 9, colorSpace = colorSpace)
        assertEquals(colorSpace, bitmap.colorSpace)
    }

    @Test fun scale() {
        val b = createBitmap(7, 9).scale(3, 5)
        assertEquals(3, b.width)
        assertEquals(5, b.height)
    }

    @Test fun applyCanvas() {
        val p = createBitmap(2, 2).applyCanvas {
            drawColor(0x40302010)
        }.getPixel(1, 1)

        assertEquals(0x40302010, p)
    }

    @Test fun getPixel() {
        val b = createBitmap(2, 2).applyCanvas {
            drawColor(0x40302010)
        }
        assertEquals(0x40302010, b[1, 1])
    }

    @Test fun setPixel() {
        val b = createBitmap(2, 2)
        b[1, 1] = 0x40302010
        assertEquals(0x40302010, b[1, 1])
    }

    @Test fun crop() {
        val src = createBitmap(10, 10)
        src[3, 5] = 0x40302010
        val res = src.crop(3, 5, 2, 2)
        assertEquals(2, res.width)
        assertEquals(2, res.height)
        assertEquals(0x40302010, res[0, 0])
    }

    @Test fun rotate() {
        val src = createBitmap(10, 10)
        src[3, 5] = 0x40302010
        src[0, 0] = 0x10203010
        val res = src.rotate(90f, 0f, 0f)
        assertEquals(10, res.width)
        assertEquals(10, res.height)
        assertEquals(0x10203010, res[9, 0])
        assertEquals(0x40302010, res[4, 3])
    }
}