Reduce size of test-runner args #57
Description
If we specify all test methods that are to be ran in a big enough project, we will easily reach the space available for command arguments set by Linux.
This limit can be adjusted, but even with 65MB available there is still an issue for thousands of methods.
Trace:
java.lang.RuntimeException: java.io.IOException: Cannot run program "java" (in directory "/home/andre/Repos/flacoco/."): error=7, Argument list too long
at eu.stamp_project.testrunner.EntryPoint.runGivenCommandLine(EntryPoint.java:602)
at eu.stamp_project.testrunner.EntryPoint.runCoveredTestResultPerTestMethods(EntryPoint.java:496)
at fr.spoonlabs.flacoco.core.coverage.framework.JUnit4Strategy.execute(JUnit4Strategy.java:23)
at fr.spoonlabs.flacoco.core.coverage.CoverageRunner.getCoverageMatrix(CoverageRunner.java:34)
at fr.spoonlabs.flacoco.localization.spectrum.SpectrumRunner.computeCoverageMatrix(SpectrumRunner.java:37)
at fr.spoonlabs.flacoco.localization.spectrum.SpectrumRunner.run(SpectrumRunner.java:22)
at fr.spoonlabs.flacoco.api.Flacoco.runDefault(Flacoco.java:32)
at fr.spoonlabs.flacoco.cli.FlacocoMain.call(FlacocoMain.java:105)
at fr.spoonlabs.flacoco.cli.FlacocoMain.call(FlacocoMain.java:25)
at picocli.CommandLine.executeUserObject(CommandLine.java:1953)
at picocli.CommandLine.access$1300(CommandLine.java:145)
at picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2352)
at picocli.CommandLine$RunLast.handle(CommandLine.java:2346)
at picocli.CommandLine$RunLast.handle(CommandLine.java:2311)
at picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2179)
at picocli.CommandLine.execute(CommandLine.java:2078)
at fr.spoonlabs.flacoco.cli.FlacocoMain.main(FlacocoMain.java:96)
Caused by: java.io.IOException: Cannot run program "java" (in directory "/home/andre/Repos/flacoco/."): error=7, Argument list too long
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
at eu.stamp_project.testrunner.EntryPoint.runGivenCommandLine(EntryPoint.java:591)
... 16 more
Caused by: java.io.IOException: error=7, Argument list too long
at java.lang.UNIXProcess.forkAndExec(Native Method)
at java.lang.UNIXProcess.<init>(UNIXProcess.java:247)
at java.lang.ProcessImpl.start(ProcessImpl.java:134)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
... 17 more