I have been trying to perform a simple UI test using Espresso and all my tests fail with the same exception:
java.lang.IllegalStateException: No instrumentation registered! Must run under a registering instrumentation
It's a beginners guide in the use of esspresso here. I have already found similar questions but the most relevant ones to me are unanswered here - I presume it is because they didn't paint the whole picture so here is my code. I will only show one test because they all fail with the exact same error:
build.gradle(Module: app)
apply plugin: 'com.android.application'
android {
compileSdkVersion 27
defaultConfig {
applicationId "io.github.vinge1718.myrestaurants"
minSdkVersion 15
targetSdkVersion 27
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
//testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
testOptions {
unitTests {
includeAndroidResources = true
}
}
}
dependencies {
testImplementation "org.robolectric:robolectric:3.8"
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation('com.android.support.test.espresso:espresso-core:3.0.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0'
androidTestImplementation 'androidx.test:runner:1.1.0'
androidTestImplementation 'androidx.test:rules:1.1.0'
androidTestImplementation 'org.hamcrest:hamcrest-library:1.3'
}
build.gradle (Project: MyRestaurant)
buildscript {
repositories {
google()
jcenter()
maven { url "https://oss.sonatype.org/content/repositories/snapshots" }
}
dependencies {
classpath 'com.android.tools.build:gradle:3.2.1'
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
correction here are the two tests. I don't think the error is in any way related to the tests themselves but the configurations - I stand corrected though
(MainActivityInstrumentationTest.java)
package io.github.vinge1718.myrestaurants;
import android.support.test.runner.AndroidJUnit4;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import androidx.test.rule.ActivityTestRule;
import static androidx.test.espresso.Espresso.onView;
import static androidx.test.espresso.action.ViewActions.click;
import static androidx.test.espresso.action.ViewActions.closeSoftKeyboard;
import static androidx.test.espresso.action.ViewActions.typeText;
import static androidx.test.espresso.assertion.ViewAssertions.matches;
import static androidx.test.espresso.matcher.ViewMatchers.withId;
import static androidx.test.espresso.matcher.ViewMatchers.withText;
@RunWith(AndroidJUnit4.class)
public class MainActivityInstrumentationTest {
private String mStringToBetyped;
@Rule
public ActivityTestRule<MainActivity> mActivityRule = new ActivityTestRule<>(MainActivity.class);
@Before
public void initValidString() {
// Specify a valid string.
mStringToBetyped = "Portland";
}
@Test
public void validateEditText(){
onView(withId(R.id.locationEditText))
.perform(typeText(mStringToBetyped), closeSoftKeyboard())
.check(matches(withText(mStringToBetyped)));
}
@Test
public void locationIsSentToRestaurantActivity(){
String location = "Portland";
onView(withId(R.id.locationEditText)).perform(typeText(location));
onView(withId(R.id.findRestaurantsButton)).perform(click());
onView(withId(R.id.locationTextView)).check(matches(withText("Here are all the Restaurants near " + location)));
}
}
I have tried following this espresso set up documentation here but I keep getting the same error:
Started running tests
java.lang.IllegalStateException: No instrumentation registered! Must run under a registering instrumentation. at androidx.test.InstrumentationRegistry.getInstrumentation(InstrumentationRegistry.java:50) at androidx.test.InstrumentationRegistry.getTargetContext(InstrumentationRegistry.java:101) at androidx.test.rule.ActivityTestRule.(ActivityTestRule.java:144) at androidx.test.rule.ActivityTestRule.(ActivityTestRule.java:120) at androidx.test.rule.ActivityTestRule.(ActivityTestRule.java:103) at io.github.vinge1718.myrestaurants.MainActivityInstrumentationTest.(MainActivityInstrumentationTest.java:25) at java.lang.reflect.Constructor.newInstance0(Native Method) at java.lang.reflect.Constructor.newInstance(Constructor.java:334) at org.junit.runners.BlockJUnit4ClassRunner.createTest(BlockJUnit4ClassRunner.java:217) at org.junit.runners.BlockJUnit4ClassRunner$1.runReflectiveCall(BlockJUnit4ClassRunner.java:266) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:263) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at android.support.test.runner.AndroidJUnit4.run(AndroidJUnit4.java:101) at org.junit.runners.Suite.runChild(Suite.java:128) at org.junit.runners.Suite.runChild(Suite.java:27) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at org.junit.runner.JUnitCore.run(JUnitCore.java:115) at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:56) at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:384) at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:2075)
Tests ran to completion.
Here is my test configurations as decribed in the espresso set up documentation:
