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feat:UI Tests (#16)
* WIP: UI Tests * feat(test): instrumented testing of demo app behavior * fix(deps): Use consistent appcompat version * chore(gradle): Move deps to dependency.gradle
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‎app/build.gradle‎

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implementation dependency_android.appcompat
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implementation dependency_android.design
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implementation dependency_android.constraint_layout
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androidTestImplementation dependency_android.junit
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androidTestImplementation dependency_android.test_rules
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androidTestImplementation dependency_android.test_runner
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androidTestImplementation dependency_android.espresso
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}

‎app/src/androidTest/java/com/algolia/instantsearch/voice/demo/MainActivityNoPermissionTest.java‎

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package com.algolia.instantsearch.voice.demo;
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import android.support.test.filters.LargeTest;
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import android.support.test.rule.ActivityTestRule;
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import android.support.test.runner.AndroidJUnit4;
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import org.junit.Rule;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import static android.support.test.espresso.Espresso.onView;
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import static android.support.test.espresso.action.ViewActions.click;
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import static android.support.test.espresso.assertion.ViewAssertions.doesNotExist;
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import static android.support.test.espresso.assertion.ViewAssertions.matches;
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import static android.support.test.espresso.matcher.ViewMatchers.isDisplayed;
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import static android.support.test.espresso.matcher.ViewMatchers.withId;
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/**
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* Tests the behavior of the application when no permission are set.
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* <b>Make sure that no permissions have been granted on the test device!</b>
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* If any, reset them with <code>adb shell pm reset-permissions com.algolia.instantsearch.voice.demo</code>
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* before running these tests.
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*/
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@RunWith(AndroidJUnit4.class)
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@LargeTest
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public class MainActivityNoPermissionTest {
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@Rule
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public ActivityTestRule mActivityRule = new ActivityTestRule<>(MainActivity.class);
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@Test
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public void clickPermissionButton_displaysPermissionOverlay() {
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// When clicking on the buttonPermission
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onView(withId(R.id.buttonPermission))
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.perform(click());
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// the permission overlay should display
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onView(withId(R.id.voicePermission))
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.check(matches(isDisplayed()));
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// the input overlay should not
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onView(withId(R.id.voiceInput))
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.check(doesNotExist());
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}
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@Test
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public void clickInputButton_displaysPermissionOverlay() {
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// When clicking on the buttonVoice
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onView(withId(R.id.buttonVoice))
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.perform(click());
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// the permission overlay should display
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onView(withId(R.id.voicePermission))
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.check(matches(isDisplayed()));
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// the input overlay should not
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onView(withId(R.id.voiceInput))
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.check(doesNotExist());
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}
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}

‎app/src/androidTest/java/com/algolia/instantsearch/voice/demo/MainActivityWithPermissionTest.java‎

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package com.algolia.instantsearch.voice.demo;
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import android.Manifest;
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import android.support.test.espresso.EspressoException;
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import android.support.test.espresso.matcher.ViewMatchers;
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import android.support.test.filters.LargeTest;
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import android.support.test.rule.ActivityTestRule;
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import android.support.test.rule.GrantPermissionRule;
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import android.support.test.runner.AndroidJUnit4;
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import org.junit.Rule;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import static android.support.test.espresso.Espresso.onView;
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import static android.support.test.espresso.action.ViewActions.click;
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import static android.support.test.espresso.assertion.ViewAssertions.doesNotExist;
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import static android.support.test.espresso.assertion.ViewAssertions.matches;
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import static android.support.test.espresso.matcher.ViewMatchers.isDisplayed;
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import static android.support.test.espresso.matcher.ViewMatchers.withEffectiveVisibility;
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import static android.support.test.espresso.matcher.ViewMatchers.withId;
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import static android.support.test.espresso.matcher.ViewMatchers.withText;
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import static junit.framework.TestCase.fail;
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@RunWith(AndroidJUnit4.class)
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@LargeTest
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public class MainActivityWithPermissionTest {
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@Rule
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public ActivityTestRule testRule = new ActivityTestRule<>(MainActivity.class);
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@Rule
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public GrantPermissionRule permissionRule = GrantPermissionRule.grant(Manifest.permission.RECORD_AUDIO);
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@Test
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public void clickPermissionButton_displaysPermissionOverlay() {
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when_clickButtonPermission();
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// the permission overlay should display
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onView(withId(R.id.voicePermission))
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.check(matches(isDisplayed()));
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// the input overlay should not
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onView(withId(R.id.voiceInput))
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.check(doesNotExist());
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}
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@Test
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public void clickInputButton_displaysInputOverlay() {
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when_clickButtonVoice();
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check_displaysInputOverlay();
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check_displaysListeningOrError();
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}
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@Test
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public void clickInput_thenCancel_displaysError() {
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when_clickButtonVoice();
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// Then clicking on the mic button
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onView(withId(R.id.microphone))
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.perform(click());
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check_displaysError();
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}
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//region Helpers
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private void when_clickButtonPermission() {
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// When clicking on the buttonPermission
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onView(withId(R.id.buttonPermission))
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.perform(click());
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}
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private void when_clickButtonVoice() {
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// When clicking on the buttonVoice
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onView(withId(R.id.buttonVoice))
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.perform(click());
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}
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private void check_displaysInputOverlay() {
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// the input overlay should display
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onView(withId(R.id.voiceInput))
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.check(matches(isDisplayed()));
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// the permission overlay should not
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onView(withId(R.id.voicePermission))
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.check(doesNotExist());
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}
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private void check_displaysListening() {
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// listening should be displayed
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onView(withId(R.id.title))
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.check(matches(withText(R.string.input_title_listening)));
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onView(withId(R.id.subtitle))
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.check(matches(withText(R.string.input_subtitle_listening)));
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// No hint should be visible
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onView(withId(R.id.hint))
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.check(matches(withEffectiveVisibility(ViewMatchers.Visibility.INVISIBLE)));
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}
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private void check_displaysError() {
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// the error should be displayed
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onView(withId(R.id.title))
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.check(matches(withText(R.string.input_title_error)));
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onView(withId(R.id.subtitle))
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.check(matches(withText(R.string.input_subtitle_error)));
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// And the button to be labeled try again
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onView(withId(R.id.hint))
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.check(matches(isDisplayed()))
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.check(matches(withText(R.string.input_hint_error)));
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}
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private void check_displaysListeningOrError() {
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try {
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check_displaysListening();
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} catch (Exception e) {
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if (e instanceof EspressoException) {
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// Maybe we are on emulator -> no SpeechRecognizer?
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// in this case, we should see error displayed
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check_displaysError();
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} else fail(e.getMessage());
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}
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}
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//endregion
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}

‎dependency.gradle‎

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bintray = '1.8.4'
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maven = '2.1'
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junit = '4.12'
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test = '1.0.2'
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dependency_jvm = [
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kotlin_stdlib : "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlins",
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kotlin_test : "org.jetbrains.kotlin:kotlin-test:$kotlins",
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constraint_layout : "com.android.support.constraint:constraint-layout:$constraintLayout",
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espresso : "com.android.support.test.espresso:espresso-core:$espresso",
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design : "com.android.support:design:$design"
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junit : "junit:junit:$junit",
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test_rules : "com.android.support.test:rules:$test",
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test_runner : "com.android.support.test:runner:$test"
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]
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}

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