Bootstrapping with Gradle

Bootstrap options

gradle init --type pom
gradle init --type java-application [--test-framework spock | testng]
gradle init --type java-library [--test-framework spock | testng]
gradle init --type scala-library
gradle init --type groovy-library
gradle init --type groovy-application
gradle init --type basic

gradle init --type pom

gradle init --type java-application [--test-framework spock | testng]

gradle init --type java-library [--test-framework spock | testng]

gradle init --type scala-library

gradle init --type groovy-library

gradle init --type groovy-application

gradle init --type basic

Gradle Example

# create app
mkdir lidenlab-app && cd lidenlab-app

# bootstrap java project
gradle init --type java-application

# build project (runs unit tests)
./gradlew build
 
# check the test results
build/reports/tests/test/index.html
 
# list available Gradle tasks
./gradlew tasks
 
# execute main
./gradlew run

# delete app  
cd .. && rm -rf lidenlab-app

# create app

mkdir lidenlab-app && cd lidenlab-app

# bootstrap java project

gradle init --type java-application

# build project (runs unit tests)

./gradlew build

# check the test results

build/reports/tests/test/index.html

# list available Gradle tasks

./gradlew tasks

# execute main

./gradlew run

# delete app

cd .. && rm -rf lidenlab-app

Common Config (in progress)

apply plugin: 'java'
apply plugin: 'application'

// specify Java version
sourceCompatibility = 1.8
targetCompatibility = 1.8

 
// for gradle run
mainClassName = "com.lidenlab.App"
 
repositories {
    //mavenCentral()
    jcenter()
}

dependencies {
    compile "groupId:artifactId:version"
    testCompile group: 'junit', name: 'junit', version: '4.12'
}

apply plugin: 'java'

apply plugin: 'application'

// specify Java version

sourceCompatibility = 1.8

targetCompatibility = 1.8

// for gradle run

mainClassName = "com.lidenlab.App"

repositories {

//mavenCentral()

jcenter()

}

dependencies {

compile "groupId:artifactId:version"

testCompile group: 'junit', name: 'junit', version: '4.12'

}

Create runnable Jar file

Configure the Jar task of the Java plugin:

apply plugin: 'java'
 
jar {
    manifest {
        attributes 'Main-Class': 'com.lidenlab.App'
    }
}

apply plugin: 'java'

jar {

manifest {

attributes 'Main-Class': 'com.lidenlab.App'

}

Force running subsequent tests

# use the rerun flag
gradle test --rerun-tasks

# clean the tests
gradle cleanTest test

# configure test to depend on cleanTest in build.gradle
test {
    dependsOn 'cleanTest'
    //Your previous task details (if any)
}

# use the rerun flag

gradle test --rerun-tasks

# clean the tests

gradle cleanTest test

# configure test to depend on cleanTest in build.gradle

test {

dependsOn 'cleanTest'

//Your previous task details (if any)

}

Show StandardStreams from tests

// show System.out.println and System.err.println

test {
    testLogging {
        showStandardStreams = true
 
        // events method:
        // events 'STANDARD_OUT', 'STANDARD_ERROR'

        // events method with enum values:
        // events org.gradle.api.tasks.testing.logging.TestLogEvent.STANDARD_OUT,
        //        org.gradle.api.tasks.testing.logging.TestLogEvent.STANDARD_ERROR,
 
        // Or set events property:
        // events = ['STANDARD_OUT', 'STANDARD_ERROR']
    }
}

// show System.out.println and System.err.println

test {

testLogging {

showStandardStreams = true

// events method:

// events 'STANDARD_OUT', 'STANDARD_ERROR'

// events method with enum values:

// events org.gradle.api.tasks.testing.logging.TestLogEvent.STANDARD_OUT,

// org.gradle.api.tasks.testing.logging.TestLogEvent.STANDARD_ERROR,

// Or set events property:

// events = ['STANDARD_OUT', 'STANDARD_ERROR']

}

See: https://docs.gradle.org/current/dsl/org.gradle.api.tasks.testing.logging.TestLoggingContainer.html