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/*
* 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 com.example.android.pdfrendererbasic
import android.content.pm.ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
import android.content.pm.ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
import android.support.test.espresso.Espresso.onView
import android.support.test.espresso.action.ViewActions.click
import android.support.test.espresso.matcher.ViewMatchers.withId
import android.support.test.rule.ActivityTestRule
import android.support.test.runner.AndroidJUnit4
import android.widget.Button
import org.junit.Assert.assertEquals
import org.junit.Assert.assertFalse
import org.junit.Assert.assertTrue
import org.junit.Before
import org.junit.Rule
import org.junit.Test
import org.junit.runner.RunWith
/**
* Tests for PdfRendererBasic sample.
*/
@RunWith(AndroidJUnit4::class)
class PdfRendererBasicFragmentTests {
private lateinit var fragment: PdfRendererBasicFragment
private lateinit var btnPrevious: Button
private lateinit var btnNext: Button
@Rule @JvmField
val activityTestRule = ActivityTestRule(MainActivity::class.java)
@Before fun before() {
activityTestRule.activity.supportFragmentManager.beginTransaction()
fragment = activityTestRule.activity.supportFragmentManager
.findFragmentByTag(FRAGMENT_PDF_RENDERER_BASIC) as PdfRendererBasicFragment
}
@Test fun testActivityTitle() {
// The title of the activity should be "PdfRendererBasic (1/10)" at first
val expectedActivityTitle = activityTestRule.activity.getString(
R.string.app_name_with_index, 1, fragment.getPageCount())
assertEquals(expectedActivityTitle, activityTestRule.activity.title)
}
@Test fun testButtons_previousDisabledAtFirst() {
setUpButtons()
// Check that the previous button is disabled at first
assertFalse(btnPrevious.isEnabled)
// The next button should be enabled
assertTrue(btnNext.isEnabled)
}
@Test fun testButtons_bothEnabledInMiddle() {
setUpButtons()
turnPages(1)
// Two buttons should be both enabled
assertTrue(btnPrevious.isEnabled)
assertTrue(btnNext.isEnabled)
}
@Test fun testButtons_nextDisabledLastPage() {
setUpButtons()
val pageCount = fragment.getPageCount()
// Click till it reaches the last page
turnPages(pageCount - 1)
// Check the page count
val expectedActivityTitle = activityTestRule.activity.getString(
R.string.app_name_with_index, pageCount, pageCount)
assertEquals(expectedActivityTitle, activityTestRule.activity.title)
// The previous button should be enabled
assertTrue(btnPrevious.isEnabled)
// Check that the next button is disabled
assertFalse(btnNext.isEnabled)
}
@Test fun testOrientationChangePreserveState() {
activityTestRule.activity.requestedOrientation = SCREEN_ORIENTATION_PORTRAIT
setUpButtons()
turnPages(1)
val pageCount = fragment.getPageCount()
val expectedActivityTitle = activityTestRule.activity
.getString(R.string.app_name_with_index, 2, pageCount)
assertEquals(expectedActivityTitle, activityTestRule.activity.title)
activityTestRule.activity.requestedOrientation = SCREEN_ORIENTATION_LANDSCAPE
// Check that the title is the same after orientation change
assertEquals(expectedActivityTitle, activityTestRule.activity.title)
}
/**
* Prepares references to the buttons "Previous" and "Next".
*/
private fun setUpButtons() {
val view = fragment.view ?: return
btnPrevious = view.findViewById(R.id.previous)
btnNext = view.findViewById(R.id.next)
}
/**
* Click the "Next" button to turn the pages.
*
* @param count The number of times to turn pages.
*/
private fun turnPages(count: Int) {
for (i in 0 until count) {
onView(withId(R.id.next)).perform(click())
}
}
}
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