问题
I am trying to get code coverage using Jacoco for manual testing. I am trying to use offline instrumentation. http://www.eclemma.org/jacoco/trunk/doc/offline.html
In there it mentions:
Configuration File: If a file jacoco-agent.properties is supplied on the classpath options are loaded from this file.
My question is how do I supply this? On some other forum, I saw that jacoco-agent.properties needs to be deployed with the app.
I tried putting jacoco-agent.properties under the res/raw, but it complained about "-" in the file name.
I tried putting this under the root directory it didn't take any effect.
I was wondering how could I setup\run jacoco so that it uses jacoco-agent.properties?
回答1:
Well, at least for an Ant command line build the trick was to put jacoco-agent.properties in the src directory, which makes it get packaged as-is into the root of the APK file, from where it seems to be properly read (i.e. I can see setting the destfile property having an effect on where the execution data file is being created).
However, the created jacoco.exec file was always empty for me (like also mentioned here), probably because JaCoCo only writes the execution data at JVM termination, but Android's Dalvik VM does not terminate when the app stops.
The way we currently solve this is to explicitly call
org.jacoco.agent.rt.RT.getAgent().getExecutionData(false)
and write the returned byte array to a file when our custom test runner finishes.
来源：https://stackoverflow.com/questions/19327112/how-to-supply-jacoco-agent-to-an-android-app