why can't android gradle find junit? why isn't it searching for it in remote repositories?

Question

why isn't it searching for it in remote repositories?

after all i have at the top of my gradle script mavenCentral()

buildscript {
    repositories {
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:1.1.0'
    }
}

apply plugin: 'com.android.application'

android {
    compileSdkVersion 19
    buildToolsVersion "20.0.0"

and:

dependencies {
    compile fileTree(dir: 'libs', include: '*.jar')
    compile project(':lvl-licensing')
    testCompile 'junit:junit:4.12'
}

result is:

$ ./gradlew --info build
.
.
.
Creating configuration testReleaseProvided.
Creating configuration testReleaseWearApp.

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring project ':myapp'.
> Could not resolve all dependencies for configuration ':myapp:_debugUnitTestCompile'.
   > Could not find junit:junit:4.12.
     Searched in the following locations:
         file:/home/myuser/Android/Sdk/extras/android/m2repository/junit/junit/4.12/junit-4.12.pom
         file:/home/myuser/Android/Sdk/extras/android/m2repository/junit/junit/4.12/junit-4.12.jar
         file:/home/myuser/Android/Sdk/extras/google/m2repository/junit/junit/4.12/junit-4.12.pom
         file:/home/myuser/Android/Sdk/extras/google/m2repository/junit/junit/4.12/junit-4.12.jar
     Required by:
         myapp-container:myapp:unspecified

* Try:
Run with --stacktrace option to get the stack trace. Run with --debug option to get more log output.

BUILD FAILED

Total time: 7.023 secs
Stopped 0 compiler daemon(s).

Answer 1

The solution described by @Jas worked for me. But, since I had trouble adjusting build.gradle, I decided to post an answer with the complete change. This is how my build.gradle looks like ath the end:

buildscript {
    repositories {
        maven { url 'http://repo1.maven.org/maven2' }
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.2'    
    }
}

repositories {
    maven { url 'http://repo1.maven.org/maven2' }
}

allprojects {
    repositories {
        maven { url 'http://repo1.maven.org/maven2' }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}