Thanks to, Yannick Welsch:
After searching Google, reading the Gradle docs and going through older StackOverflow posts, I found this answer on the Official gradle forums!
jacocoTestReport {
afterEvaluate {
classDirectories.setFrom(files(classDirectories.files.collect {
fileTree(dir: it, exclude: 'com/blah/**')
}))
}
}
Source: https://issues.gradle.org/browse/GRADLE-2955
For older gradle versions < 5.x may need to use
classDirectories = files(classDirectories.files.collect { instead of classDirectories.setFrom
Solution to my build.gradle for Java/Groovy projects:
apply plugin: 'java'
apply plugin: 'jacoco'
jacocoTestReport {
reports {
xml {
enabled true // coveralls plugin depends on xml format report
}
html {
enabled true
}
}
afterEvaluate {
classDirectories = files(classDirectories.files.collect {
fileTree(dir: it,
exclude: ['codeeval/**',
'crackingthecode/part3knowledgebased/**',
'**/Chapter7ObjectOrientedDesign**',
'**/Chapter11Testing**',
'**/Chapter12SystemDesignAndMemoryLimits**',
'projecteuler/**'])
})
}
}
As you can see, I was successfully able to add more to exclude: in order to filter a few packages.
Source: https://github.com/jaredsburrows/CS-Interview-Questions/blob/master/build.gradle
Custom tasks for other projects such as Android:
apply plugin: 'jacoco'
task jacocoReport(type: JacocoReport) {
reports {
xml {
enabled true // coveralls plugin depends on xml format report
}
html {
enabled true
}
}
afterEvaluate {
classDirectories = files(classDirectories.files.collect {
fileTree(dir: it,
exclude: ['codeeval/**',
'crackingthecode/part3knowledgebased/**',
'**/Chapter7ObjectOrientedDesign**',
'**/Chapter11Testing**',
'**/Chapter12SystemDesignAndMemoryLimits**',
'projecteuler/**'])
})
}
}