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rjust
How to get the coverage of test cases at classes granularity?
Hello, sir
I'm trying to get the coverage of test cases at classes granularity (i.e., columns are classes and rows are test cases).
Therefore, I tried the following work (taking lang-1b as an example):
(1) First, I used Understand (a static analysis tool) to get all classes of Lang 1b, named 'all_calsses.txt';
(2) I used the [i] option of coverage command to get coverage of 'all_calsses.txt'.
However, I got this error:
% defects4j coverage -i all_classes.txt Running ant (compile.tests)................................................ OK Running ant (coverage.instrument).......................................... OK Running ant (run.dev.tests)................................................ OK Running ant (coverage.report).............................................. OK Lines total: 0 Lines covered: 0 Conditions total: 0 Conditions covered: Illegal division by zero at /Users/user/defects4j/framework/bin/d4j/d4j-coverage line 168. Compilation failed in require at /user/defects4j/framework/bin/defects4j line 195.
I tried to find the reason for this error, erhaps because there was an error in "all_classes.txt" ? For example, some classes in "all_classes. txt" are not real classes in d4j?
The attachment is my "all_classes. txt" . Can you give some suggestions? @rjust
Hi @gouxiaodong,
The shared all_classes.txt file indeed includes a number of invalid entries (e.g., org.apache.commons.lang3.ArrayUtils.add.T); these should be removed. Perhaps this invalid output points to a bug in the used static analysis tool?
The reason for the division-by-zero error is that there are 0 instrumented lines, which is unexpected. Please let us know if this actually happens for a class that does exist in the source code. If so, Defects4J should handle this case (as opposed to assuming 1+ instrumented lines).
Thanks, René
Thank you for your attention, @rjust, I will try it again and give you feedback in time once the reason is confirmed.