Increase test coverage: Array.prototype reverse #2728
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Branch coverage: Before: 28/38 After: 37//38 Also found an opportunity to optimize, the second condition was not needed in that else if branch, as if the code reaches there, it cant be false. JerryScript-DCO-1.0-Signed-off-by: Mate Dabis mdabis@inf.u-szeged.hu
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The coverage is measured by the following script, using
--jerry-test-suite --test262 --unittests --jerry-tests:https://github.com/matedabis/jerryscript/blob/gcov_coverage_tester/tests/gcov-tests/gcovtester.py
Comment added for each cases containing which part of the ES5.1 it tests.
Ran the test code in Gecko, V8, SpiderMonkey engines and got the same result.
Branch coverage:
I spent a lot of time finding a way to trigger the last branch, but I could not. (
ecma-builtin-array-prototype.c, line: 648) The following line needs to fail:ECMA_TRY_CATCH (put_value, ecma_op_object_put (obj_p, upper_str_p, lower_value, true), ret_value);Also found an opportunity to optimize, the second condition was not needed in that else if branch, as if the code reaches there, it cant be false.
JerryScript-DCO-1.0-Signed-off-by: Mate Dabis mdabis@inf.u-szeged.hu