'Could not find method testImplementation() for arguments [junit:junit:4.12]

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])

    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'android.arch.navigation:navigation-fragment:1.0.0-alpha06'
    implementation 'android.arch.navigation:navigation-ui:1.0.0-alpha06'
    implementation 'android.arch.navigation:navigation-fragment-ktx:1.0.0-alpha06'
    implementation 'android.arch.navigation:navigation-ui-ktx:1.0.0-alpha06'
    implementation 'com.android.support:design:28.0.0'
    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'
}

This is my build.gradle file and I tried many ways but I can't fix this, when I start Android Studio and gradle starts build the project Android Studio throw this error how can I fix it?( I am new in Android)

Could not find method testImplementation() for arguments [junit:junit:4.12] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

Solution 1:^[1]

It is Google's fault.You need to use your countries letters.So use '?' instead 'I'.

test?mplementation  'junit:junit:4.12'
androidTest?mplementation  'androidx.test:runner:1.1.1'
androidTest?mplementation  'androidx.test.espresso:espresso-core:3.1.1'

Solution 2:^[2]

Well, I know that's not the nicest solution for this but this is what worked. I simply commented these lines out:

//testImplementation "junit:junit:4.12"
//testImplementation "org.robolectric:robolectric:3.1.2"

Hope it helps =)

Solution 3:^[3]

Even though the documentation says

In your app's top-level build.gradle file, specify the following libraries as dependencies:

... I haven't found an example that works that way.

In fact, this GoogleSamples Android Unit Test example specifies:

// NOTE: Do not place your application dependencies here; they belong in the individual module build.gradle files

So, move that line to the module build.gradle, not the top-level build.gradle

Solution 4:^[4]

100% working.

Replace test?mplementation with testImplementation.(? with I or i)

in your dependencies

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])

implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'android.arch.navigation:navigation-fragment:1.0.0-alpha06'
implementation 'android.arch.navigation:navigation-ui:1.0.0-alpha06'
implementation 'android.arch.navigation:navigation-fragment-ktx:1.0.0-alpha06'
implementation 'android.arch.navigation:navigation-ui-ktx:1.0.0-alpha06'
implementation 'com.android.support:design:28.0.0'
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'

}

Solution 5:^[5]

Can you provide your Gradle version and complete build.gradle ?

Possible issues:

You are missing a plugin definition apply plugin: 'com.android.application'

or any plugin that implicitly uses the Java Plugin ? That's where the testImplementation comes from.

You're using < Gradle 3.x (testImplementation is not available in the previous releases)

Ensure you are using Gradle 3.x+ and that the top level build.gradle has Android Gradle Plugin 3.x+ defined in it : https://developer.android.com/studio/releases/gradle-plugin#updating-plugin

Solution 6:^[6]

Syncing only active variant You can disable this experimental feature from File ? Settings ? Experimental ? Gradle ? Only sync the active variant

Solution 7:^[7]

build.gradle file in replace :

dependencies {
    classpath 'com.android.tools.build:gradle:3.0.1'
}

Solution 8:^[8]

Before

I didn't know implementation needs to be within dependencies in build.gradle

// build.gradle
dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-web'
    testImplementation('org.springframework.boot:spring-boot-starter-test') {
        exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
    }
}

implementation 'org.springframework.boot:spring-boot-starter-actuator'

gs-spring-boot/initial [master?] » ./gradlew bootRun

FAILURE: Build failed with an exception.

* Where:
Build file '/home/geoff/work/androidStuff/gs-spring-boot/initial/build.gradle' line: 27

* What went wrong:
A problem occurred evaluating root project 'spring-boot'.
> Could not find method implementation() for arguments [org.springframework.boot:spring-boot-starter-actuator] on root project 'spring-boot' of type org.gradle.api.Project.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 1s

After

// build.gradle
dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-web'
    testImplementation('org.springframework.boot:spring-boot-starter-test') {
        exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
    }
    implementation 'org.springframework.boot:spring-boot-starter-actuator'
}

gs-spring-boot/initial [master?] » ./gradlew bootRun

> Task :bootRun

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.2.2.RELEASE)

Solution 9:^[9]

The error is caused by gradle daemon start with user's locale (TR). Starting gradle daemon with EN locale will solve the problem. In gradle.properties file set user language by updating the following line

org.gradle.jvmargs=-Xmx1536m -Duser.language=en

Solution 10:^[10]

Add Configurations -->template-->gradle--> Define gradle project field gradle project.

enter image description here

Solution 11:^[11]

One of these 3 methods will work

1) Project Structure > Project > and change

Gradle Version: 4.6
Android Plugin Version: 3.2.1

2) change it testImplementation --> test?mplementation

 test?mplementation 'junit:junit:4.12'
    androidTest?mplementation 'com.android.support.test:runner:1.0.2'
    androidTest?mplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

    //testImplementation 'junit:junit:4.12'

    //androidTestImplementation 'androidx.test:runner:1.1.2-alpha02'

    //androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0-alpha02'

Clean --> Rebuild

File --> Sync Project with Gradle Files

Solution 12:^[12]

Make sure you pay attention to proper Camel Case. TestImplementation not testimplementation. Unless you follow that convention you will receive an error and it will drive you crazy

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1
Solution 2	gmartinsnull
Solution 3	beyondtheteal
Solution 4	Nehemiah Narzary
Solution 5	jabubake
Solution 6	Mesut BeysÃ¼len
Solution 7	Onur ?nci
Solution 8	Geoff Langenderfer
Solution 9	tikeman
Solution 10	SHR
Solution 11
Solution 12	Tom

'Could not find method testImplementation() for arguments [junit:junit:4.12]

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