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    <p>I can't speak for Coberatura or JInjector, because I don't know how they collect test coverage probe data. </p> <p>What is critical is how this data is captured (does it need Java runtime support only available in standard Java VMs?) and how it is exported to the test coverage display/report generation tools.</p> <p>Our <a href="http://www.semanticdesigns.com/Products/TestCoverage/JavaTestCoverage.html" rel="nofollow noreferrer">SD Java Test Coverage</a> tool instruments your source code; at runtime this produces an array of native Java booleans representing the coverage data, without need for any special VM support. Normally, this array is exported directly to a file, used by the test coverage display mechanism, by a TCVDump method provided with the test coverage tool, as your application exits.</p> <p>Java (and other programming langauges used) in embedded systems often requires custom methods to extract the test coverage data. You might need to code a special dump procedure (in Java) to write out that boolean array to an accessible place. Our experience with building such custom dump procedures is that they are generally pretty simple (a few dozen lines); the real trick is deciding how/where to put the data, so that it can be easily moved to the target file. Mostly this is just a peculiar pair of copies, the first of which copies the boolean array to some staging location, and the second which writes the staged data into the destination file. (The standard TCVdump method is provided in source form to enable this kind of customization).</p> <p>While I haven't specifically looked at BlackBerry, if you can write the data anywhere, you can pretty much be assured you can achieve this. We've had success with other embedded hand-set systems, such as Symbian, doing this.</p> <p>If you want a complete overview of how to generally instrument code for test coverage following this strategy, see this paper: <a href="http://www.semdesigns.com/Company/Publications/TestCoverage.pdf" rel="nofollow noreferrer">Branch Coverage for Arbitrary Languages Made Easy</a></p>
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