Support for the Ruby 2.1 series ended on March 31 2017. See here for details.
Coverage provides coverage measurement feature for Ruby. This feature is experimental, so these APIs may be changed in future.
require “coverage.so”
do ::start
require or load Ruby source file
::result will return a hash
that contains filename as key and coverage array as value. A coverage array
gives, for each line, the number of line execution by the interpreter. A
nil
value means coverage is disabled for this line (lines like
else
and end
).
[foo.rb] s = 0 10.times do |x| s += x end if s == 45 p :ok else p :ng end [EOF] require "coverage.so" Coverage.start require "foo.rb" p Coverage.result #=> {"foo.rb"=>[1, 1, 10, nil, nil, 1, 1, nil, 0, nil]}
Returns a hash that contains filename as key and coverage array as value and disables coverage measurement.
static VALUE rb_coverage_result(VALUE klass) { VALUE coverages = rb_get_coverages(); VALUE ncoverages = rb_hash_new(); if (!RTEST(coverages)) { rb_raise(rb_eRuntimeError, "coverage measurement is not enabled"); } st_foreach(RHASH_TBL(coverages), coverage_result_i, ncoverages); rb_hash_freeze(ncoverages); rb_reset_coverages(); return ncoverages; }