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#68 Adding incremental instrumentation
We are developing a prototype Eclipse plugin for Cobertura (it is under testing now and may be open sourced soon). For such a plug-in to be useful, Cobertura needs the ability to instrument only classes that has been changed since the last instrumentation. We noted that Emma has this feature.
Here is the detail of the issue:
Every time I launch a test, I would instrument the classes and generate a coverage report after the execution. The problem is that every time I instrument, Cobertura would re-instrument the whole classpath, even
though only a few classes changed since the previous instrumentation - this is a big performance drawback when Cobertura is used in an interactive mode. There are many projects that takes about 1 minute to be fully
instrumented.
Have you tried just exclude from instrumentation all other files then that one 'incremental'. It should work.
What's the status of the plugin prototype ?
Cobertura doesn't really have an API, but still, you could just hook into the Main class of cobertura-instrument directly and call the respective single-class instrumentation method... - like I do in my own prototype eclipse plugin over at github. ;)
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