Clover Lambda Expression Coverage


As far as i know clover support Java 8.

I am trying to very simple test case but clover couldnt show the coverage for the whole file.

If i remove the forEach lambda block, coverage works fine.

Should i need configure the clover for extra settings?


Clover 3.3.0.v.20140331 (build-912), Win64, jdk1.8.0_05, Eclipse Luna 4.4 Build: I20140501-0200

sample code that i use:

public class Main {

	public static void main(String[] args) {
		ArrayList<String> list = new ArrayList<>();

		list.forEach(item -> {


1 answer

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Hi Ozhan,

Could you explain a little bit more what exact problem do you have? I'm asking because I used your code sample and it is being instrumented correctly and an HTML report shows coloured lines as expected.

Oh. I noticed that you're using Eclipse Luna 4.4 - please note that Clover 3.3.0 has been released before Luna 4.4. Thus the latest Eclipse version supported by Clover is Eclipse Kepler 4.3. Maybe this is the problem?


After i downgrade to Eclipse 4.3, the problem still exist. Coverage works well without lambda expression.

Here is the screencast:


java version "1.8.0_05"

Java(TM) SE Runtime Environment (build 1.8.0_05-b13)

Java HotSpot(TM) Client VM (build 25.5-b02, mixed mode)


Eclipse (clean installation with only clover plugin)

Version: Kepler Service Release 2

Build id: 20140224-0627


Clover Plugin

Version: 3.3.0.v20140331000000

The screen cast is awesome, thanks a lot for making it!

It seems that the test optimization does not work in your case - it shall detect change in a source file and include it in the optimized test run.

Could you check and use "Run as..." instead of the "Run optimized ..." and see what happens?

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