space-android/app/src/androidTest/java/com/owncloud/android/utils/DrawableUtilTests.kt

package com.owncloud.android.utils

import android.content.Context
import android.graphics.Bitmap
import android.graphics.drawable.BitmapDrawable
import androidx.test.platform.app.InstrumentationRegistry
import org.junit.After
import org.junit.Assert.fail
import org.junit.Before
import org.junit.Test

class DrawableUtilTests {

    private var sut: DrawableUtil? = null
    private var context: Context? = null

    @Before
    fun setUp() {
        sut = DrawableUtil()
        context = InstrumentationRegistry.getInstrumentation().context
    }

    @Test
    fun testAddDrawableAsOverlayWhenGivenValidDrawablesShouldContainTwoDrawable() {
        val bitmap: Bitmap = Bitmap.createBitmap(10, 10, Bitmap.Config.ARGB_8888)
        val drawable = BitmapDrawable(context?.resources, bitmap)

        if (context == null) {
            fail("context expected to be not null")
        }

        val layerDrawable = sut?.addDrawableAsOverlay(context!!, drawable, drawable)

        if (layerDrawable == null) {
            fail("Layer drawable expected to be not null")
        }

        assert(layerDrawable?.numberOfLayers == 2)
    }

    @After
    fun destroy() {
        sut = null
        context = null
    }
}