Exclude dependency from compile configuration but keep it in testCompile

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1

I want to exclude junit library from compile configuration but keep it in testCompile configuration.

Here is my build.gradle

apply plugin: "java"
repositories {
  mavenCentral()
}

dependencies {
  compile 'commons-httpclient:commons-httpclient:3.0.1'
  testCompile 'junit:junit:4.12'
}

configurations.compile {
  dependencies {
//    exclude group: "junit"
  }
}

Here is dependency tree

$ ./gradlew dependencies
:dependencies

------------------------------------------------------------
Root project
------------------------------------------------------------

archives - Configuration for archive artifacts.
No dependencies

compile - Dependencies for source set 'main'.
\--- commons-httpclient:commons-httpclient:3.0.1
     +--- junit:junit:3.8.1
     +--- commons-logging:commons-logging:1.0.3
     \--- commons-codec:commons-codec:1.2

compileClasspath - Compile classpath for source set 'main'.
\--- commons-httpclient:commons-httpclient:3.0.1
     +--- junit:junit:3.8.1
     +--- commons-logging:commons-logging:1.0.3
     \--- commons-codec:commons-codec:1.2

compileOnly - Compile dependencies for source set 'main'.
\--- commons-httpclient:commons-httpclient:3.0.1
     +--- junit:junit:3.8.1
     +--- commons-logging:commons-logging:1.0.3
     \--- commons-codec:commons-codec:1.2

default - Configuration for default artifacts.
\--- commons-httpclient:commons-httpclient:3.0.1
     +--- junit:junit:3.8.1
     +--- commons-logging:commons-logging:1.0.3
     \--- commons-codec:commons-codec:1.2

runtime - Runtime dependencies for source set 'main'.
\--- commons-httpclient:commons-httpclient:3.0.1
     +--- junit:junit:3.8.1
     +--- commons-logging:commons-logging:1.0.3
     \--- commons-codec:commons-codec:1.2

testCompile - Dependencies for source set 'test'.
+--- commons-httpclient:commons-httpclient:3.0.1
|    +--- junit:junit:3.8.1 -> 4.12
|    |    \--- org.hamcrest:hamcrest-core:1.3
|    +--- commons-logging:commons-logging:1.0.3
|    \--- commons-codec:commons-codec:1.2
\--- junit:junit:4.12 (*)

testCompileClasspath - Compile classpath for source set 'test'.
+--- commons-httpclient:commons-httpclient:3.0.1
|    +--- junit:junit:3.8.1 -> 4.12
|    |    \--- org.hamcrest:hamcrest-core:1.3
|    +--- commons-logging:commons-logging:1.0.3
|    \--- commons-codec:commons-codec:1.2
\--- junit:junit:4.12 (*)

testCompileOnly - Compile dependencies for source set 'test'.
+--- commons-httpclient:commons-httpclient:3.0.1
|    +--- junit:junit:3.8.1 -> 4.12
|    |    \--- org.hamcrest:hamcrest-core:1.3
|    +--- commons-logging:commons-logging:1.0.3
|    \--- commons-codec:commons-codec:1.2
\--- junit:junit:4.12 (*)

testRuntime - Runtime dependencies for source set 'test'.
+--- commons-httpclient:commons-httpclient:3.0.1
|    +--- junit:junit:3.8.1 -> 4.12
|    |    \--- org.hamcrest:hamcrest-core:1.3
|    +--- commons-logging:commons-logging:1.0.3
|    \--- commons-codec:commons-codec:1.2
\--- junit:junit:4.12 (*)

Here is dependency tree when I uncommented exclude

$ ./gradlew dependencies
:dependencies

------------------------------------------------------------
Root project
------------------------------------------------------------

archives - Configuration for archive artifacts.
No dependencies

compile - Dependencies for source set 'main'.
\--- commons-httpclient:commons-httpclient:3.0.1
     +--- commons-logging:commons-logging:1.0.3
     \--- commons-codec:commons-codec:1.2

compileClasspath - Compile classpath for source set 'main'.
\--- commons-httpclient:commons-httpclient:3.0.1
     +--- commons-logging:commons-logging:1.0.3
     \--- commons-codec:commons-codec:1.2

compileOnly - Compile dependencies for source set 'main'.
\--- commons-httpclient:commons-httpclient:3.0.1
     +--- commons-logging:commons-logging:1.0.3
     \--- commons-codec:commons-codec:1.2

default - Configuration for default artifacts.
\--- commons-httpclient:commons-httpclient:3.0.1
     +--- commons-logging:commons-logging:1.0.3
     \--- commons-codec:commons-codec:1.2

runtime - Runtime dependencies for source set 'main'.
\--- commons-httpclient:commons-httpclient:3.0.1
     +--- commons-logging:commons-logging:1.0.3
     \--- commons-codec:commons-codec:1.2

testCompile - Dependencies for source set 'test'.
\--- commons-httpclient:commons-httpclient:3.0.1
     +--- commons-logging:commons-logging:1.0.3
     \--- commons-codec:commons-codec:1.2

testCompileClasspath - Compile classpath for source set 'test'.
\--- commons-httpclient:commons-httpclient:3.0.1
     +--- commons-logging:commons-logging:1.0.3
     \--- commons-codec:commons-codec:1.2

testCompileOnly - Compile dependencies for source set 'test'.
\--- commons-httpclient:commons-httpclient:3.0.1
     +--- commons-logging:commons-logging:1.0.3
     \--- commons-codec:commons-codec:1.2

testRuntime - Runtime dependencies for source set 'test'.
\--- commons-httpclient:commons-httpclient:3.0.1
     +--- commons-logging:commons-logging:1.0.3
     \--- commons-codec:commons-codec:1.2
2

Using compileOnly as scope

configurations {
    compileOnly {
        exclude group: 'junit', module: 'junit'
    }
}