Scala Cucumber does not support dependency injection. https://github.com/cucumber/cucumber-jvm/issues/469 A workaround is to use Java or Groovy. This setup worked for me.

cucumber-scala-dependency-injection.gradle

dependencies {
    testCompile "junit:junit-dep:4.11"
    testCompile "info.cukes:cucumber-scala_2.10:1.2.2"//TODO: Can be deleted?
    testCompile "info.cukes:cucumber-core:1.2.2"
    testCompile 'info.cukes:cucumber-java:1.2.2'
    testCompile "info.cukes:cucumber-junit:1.2.2" //TODO: Not needed?

    //If you'd like some dependencies
    testCompile 'info.cukes:cucumber-spring:1.2.2'
    testCompile 'org.springframework:spring-test:4.0.5.RELEASE'

    //These are som weird-weird dependencies Cucumber+Java+Scala gets.
    testCompile "xmlpull:xmlpull:1.1.3.4a"
    testCompile "woodstox:wstx-asl:3.2.7"
    testCompile "stax:stax:1.2.0"
    testCompile "xom:xom:1.2.5"
    testCompile "jdom:jdom:1.0"
    testCompile "cglib:cglib:3.1"
}

configurations {
    cucumberRuntime {
        extendsFrom testRuntime
    }
}

task cucumber(group:'Verification', description: 'Runs Cucumber tests') {
    dependsOn testClasses
    doLast {
        //Usage.txt: https://github.com/cucumber/cucumber-jvm/blob/master/core/src/main/resources/cucumber/api/cli/USAGE.txt
        javaexec {
            main = "cucumber.api.cli.Main"
            classpath = configurations.cucumberRuntime + sourceSets.main.output + sourceSets.test.output
            args = ['--plugin', project.cucumberFormat, '--glue', 'cucumber', 'src/test/resources', '--tags', '~@ignore']
        }
    }
}