packages/SystemUI/tests/src/com/android/systemui/media/SeekBarObserverTest.kt

/*
 * Copyright (C) 2020 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 com.android.systemui.media

import android.testing.AndroidTestingRunner
import android.testing.TestableLooper
import android.view.View
import android.widget.SeekBar
import android.widget.TextView
import androidx.test.filters.SmallTest
import com.android.systemui.SysuiTestCase
import com.google.common.truth.Truth.assertThat
import org.junit.Before
import org.junit.Test
import org.junit.runner.RunWith
import org.mockito.Mock
import org.mockito.Mockito.mock
import org.mockito.Mockito.`when` as whenever

@SmallTest
@RunWith(AndroidTestingRunner::class)
@TestableLooper.RunWithLooper
public class SeekBarObserverTest : SysuiTestCase() {

    private lateinit var observer: SeekBarObserver
    @Mock private lateinit var mockHolder: PlayerViewHolder
    private lateinit var seekBarView: SeekBar
    private lateinit var elapsedTimeView: TextView
    private lateinit var totalTimeView: TextView

    @Before
    fun setUp() {
        mockHolder = mock(PlayerViewHolder::class.java)
        seekBarView = SeekBar(context)
        elapsedTimeView = TextView(context)
        totalTimeView = TextView(context)
        whenever(mockHolder.seekBar).thenReturn(seekBarView)
        whenever(mockHolder.elapsedTimeView).thenReturn(elapsedTimeView)
        whenever(mockHolder.totalTimeView).thenReturn(totalTimeView)
        observer = SeekBarObserver(mockHolder)
    }

    @Test
    fun seekBarGone() {
        // WHEN seek bar is disabled
        val isEnabled = false
        val data = SeekBarViewModel.Progress(isEnabled, false, null, null)
        observer.onChanged(data)
        // THEN seek bar shows just a line with no text
        assertThat(seekBarView.isEnabled()).isFalse()
        assertThat(seekBarView.getThumb().getAlpha()).isEqualTo(0)
        assertThat(elapsedTimeView.getText()).isEqualTo("")
        assertThat(totalTimeView.getText()).isEqualTo("")
    }

    @Test
    fun seekBarVisible() {
        // WHEN seek bar is enabled
        val isEnabled = true
        val data = SeekBarViewModel.Progress(isEnabled, true, 3000, 12000)
        observer.onChanged(data)
        // THEN seek bar is visible
        assertThat(seekBarView.getVisibility()).isEqualTo(View.VISIBLE)
        assertThat(elapsedTimeView.getVisibility()).isEqualTo(View.VISIBLE)
        assertThat(totalTimeView.getVisibility()).isEqualTo(View.VISIBLE)
    }

    @Test
    fun seekBarProgress() {
        // WHEN seek bar progress is about half
        val data = SeekBarViewModel.Progress(true, true, 3000, 120000)
        observer.onChanged(data)
        // THEN seek bar is visible
        assertThat(seekBarView.progress).isEqualTo(100)
        assertThat(seekBarView.max).isEqualTo(120000)
        assertThat(elapsedTimeView.getText()).isEqualTo("00:03")
        assertThat(totalTimeView.getText()).isEqualTo("02:00")
    }

    @Test
    fun seekBarDisabledWhenSeekNotAvailable() {
        // WHEN seek is not available
        val isSeekAvailable = false
        val data = SeekBarViewModel.Progress(true, isSeekAvailable, 3000, 120000)
        observer.onChanged(data)
        // THEN seek bar is not enabled
        assertThat(seekBarView.isEnabled()).isFalse()
    }

    @Test
    fun seekBarEnabledWhenSeekNotAvailable() {
        // WHEN seek is available
        val isSeekAvailable = true
        val data = SeekBarViewModel.Progress(true, isSeekAvailable, 3000, 120000)
        observer.onChanged(data)
        // THEN seek bar is not enabled
        assertThat(seekBarView.isEnabled()).isTrue()
    }
}