[test]

spec/_runTest.bat

 setlocal EnableDelayedExpansion
 del /q /s .\spec\coverage\json_files\*.json
+rd /s /q .\coverage
 for /f %%j in ('karma start ./spec/karma.conf.js') do set karmaRe=%%j
 for /f  %%i in ('node ./spec/_mergeCoverageForIstanbul.js') do set re=%%i
 istanbul report html spec/coverage/json_files/%re%.json
\ No newline at end of file