diff options
author | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-27 07:23:02 +0000 |
---|---|---|
committer | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-27 07:23:02 +0000 |
commit | 71dca4b60dafa87601df4ded2847411bb5b598da (patch) | |
tree | 49334554915e589e13839d94b877507f15e32fbd /test/lib | |
parent | 85fe3defcc71d40f09a6883b3db2fb5277b3df9c (diff) | |
download | ruby-71dca4b60dafa87601df4ded2847411bb5b598da.tar.gz |
test for IO.copy_stream CPU usage (r58534)
I'm likely to make similar mistakes in the future when working
on Fiber auto-scheduling. Start adding assertions for existing
code, first.
* test/ruby/test_io.rb (test_copy_stream_no_busy_wait): added
* test/lib/test/unit/assertions.rb (assert_cpu_usage_low): added
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58924 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test/lib')
-rw-r--r-- | test/lib/test/unit/assertions.rb | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/test/lib/test/unit/assertions.rb b/test/lib/test/unit/assertions.rb index 976a6fd04a..92f754064a 100644 --- a/test/lib/test/unit/assertions.rb +++ b/test/lib/test/unit/assertions.rb @@ -715,6 +715,13 @@ eom skip end + def assert_cpu_usage_low(msg = nil, pct: 0.005) + require 'benchmark' + tms = Benchmark.measure(msg || '') { yield } + max = pct * tms.real + assert_operator tms.total, :<=, max, msg + end + def assert_is_minus_zero(f) assert(1.0/f == -Float::INFINITY, "#{f} is not -0.0") end |