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* ext/coverage/coverage.c: Fully reset coverage to not persist global state.

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It was returning old file coverages as empty arrays to the user.
  [ruby-core:74596] [Bug #12220]
* ext/coverage/coverage.c (rb_coverages): remove unused static state.
* thread.c: Moved and renamed coverage_clear_result_i to reset_coverage_i.
* test/coverage/test_coverage.rb: improve precision of tests.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54504 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
eregon 2016-04-06 14:29:17 +00:00
parent 6a79276edd
commit 4225b29df9
4 changed files with 34 additions and 27 deletions
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25
ext/coverage/coverage.c
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@ -11,8 +11,6 @@
#include "ruby.h"
#include "vm_core.h"
static VALUE rb_coverages = Qundef;
/*
* call-seq:
* Coverage.start => nil
@ -22,25 +20,15 @@ static VALUE rb_coverages = Qundef;
static VALUE
rb_coverage_start(VALUE klass)
{
if (!RTEST(rb_get_coverages())) {
if (rb_coverages == Qundef) {
rb_coverages = rb_hash_new();
rb_obj_hide(rb_coverages);
}
rb_set_coverages(rb_coverages);
VALUE coverages = rb_get_coverages();
if (!RTEST(coverages)) {
coverages = rb_hash_new();
rb_obj_hide(coverages);
rb_set_coverages(coverages);
}
return Qnil;
}
/* Make coverage arrays empty so old covered files are no longer tracked. */
static int
coverage_clear_result_i(st_data_t key, st_data_t val, st_data_t h)
{
VALUE coverage = (VALUE)val;
rb_ary_clear(coverage);
return ST_CONTINUE;
}
static int
coverage_peek_result_i(st_data_t key, st_data_t val, st_data_t h)
{
@ -83,8 +71,6 @@ static VALUE
rb_coverage_result(VALUE klass)
{
VALUE ncoverages = rb_coverage_peek_result(klass);
VALUE coverages = rb_get_coverages();
st_foreach(RHASH_TBL(coverages), coverage_clear_result_i, ncoverages);
rb_reset_coverages();
return ncoverages;
}
@ -129,5 +115,4 @@ Init_coverage(void)
rb_define_module_function(rb_mCoverage, "start", rb_coverage_start, 0);
rb_define_module_function(rb_mCoverage, "result", rb_coverage_result, 0);
rb_define_module_function(rb_mCoverage, "peek_result", rb_coverage_peek_result, 0);
rb_gc_register_address(&rb_coverages);
}