diff options
Diffstat (limited to 'test/benchmark')
| -rw-r--r-- | test/benchmark/test_benchmark.rb | 168 |
1 files changed, 162 insertions, 6 deletions
diff --git a/test/benchmark/test_benchmark.rb b/test/benchmark/test_benchmark.rb index 6d390558ac..e3305aa0ba 100644 --- a/test/benchmark/test_benchmark.rb +++ b/test/benchmark/test_benchmark.rb @@ -1,10 +1,166 @@ -require "test/unit" -require "benchmark" +require 'minitest/spec' +require 'benchmark' -class TestBenchmark < Test::Unit::TestCase - def test_add! - assert_nothing_raised("[ruby-dev:40906]") do - Benchmark::Tms.new.add! {} +MiniTest::Unit.autorun + +describe Benchmark do + BENCH_FOR_TIMES_UPTO = lambda do |x| + n = 1000 + tf = x.report("for:") { for _ in 1..n; '1'; end } + tt = x.report("times:") { n.times do ; '1'; end } + tu = x.report("upto:") { 1.upto(n) do ; '1'; end } + [tf+tt+tu, (tf+tt+tu)/3] + end + + BENCH_FOR_TIMES_UPTO_NO_LABEL = lambda do |x| + n = 1000 + x.report { for _ in 1..n; '1'; end } + x.report { n.times do ; '1'; end } + x.report { 1.upto(n) do ; '1'; end } + end + + def labels + %w[first second third] + end + + def bench(type = :bm, *args, &block) + if block + Benchmark.send(type, *args, &block) + else + Benchmark.send(type, *args) do |x| + labels.each { |label| + x.report(label) {} + } + end + end + end + + def capture_output + capture_io { yield }.first.gsub(/\d\.\d{6}/, '--time--') + end + + def capture_bench_output(type, *args, &block) + capture_output { bench(type, *args, &block) } + end + + describe 'Tms' do + it 'outputs nicely' do + Benchmark::Tms.new.to_s.must_equal " 0.000000 0.000000 0.000000 ( 0.000000)\n" + Benchmark::Tms.new(1,2,3,4,5).to_s.must_equal " 1.000000 2.000000 10.000000 ( 5.000000)\n" + Benchmark::Tms.new(1,2,3,4,5,'label').format('%u %y %U %Y %t %r %n').must_equal \ + "1.000000 2.000000 3.000000 4.000000 10.000000 (5.000000) label" + Benchmark::Tms.new(1).format('%u %.3f', 2).must_equal "1.000000 2.000" + end + + it 'wont modify the format String given' do + format = "format %u" + Benchmark::Tms.new.format(format) + format.must_equal "format %u" + end + end + + describe 'benchmark' do + it 'makes extra calcultations with an Array at the end of the benchmark and show the result' do + capture_bench_output(:benchmark, + Benchmark::CAPTION, 7, + Benchmark::FORMAT, ">total:", ">avg:", + &BENCH_FOR_TIMES_UPTO).must_equal BENCHMARK_OUTPUT_WITH_TOTAL_AVG + end + end + + describe 'bm' do + it "returns an Array of the times with the labels" do + capture_io do + results = bench + results.must_be_instance_of Array + results.size.must_equal labels.size + results.zip(labels).each { |tms, label| + tms.must_be_instance_of Benchmark::Tms + tms.label.must_equal label + } + end + end + + it 'correctly guess the label width even when not given' do + skip :not_implemented + capture_bench_output(:bm).must_equal BM_OUTPUT + end + + it 'correctly output when the label width is given' do + capture_bench_output(:bm, 6).must_equal BM_OUTPUT + end + + it 'correctly output when no label is given' do + capture_bench_output(:bm, &BENCH_FOR_TIMES_UPTO_NO_LABEL).must_equal BM_OUTPUT_NO_LABEL + end + + it 'can make extra calcultations with an array at the end of the benchmark' do + capture_bench_output(:bm, 7, ">total:", ">avg:", + &BENCH_FOR_TIMES_UPTO).must_equal BENCHMARK_OUTPUT_WITH_TOTAL_AVG + end + end + + describe 'bmbm' do + it 'correctly guess the label width even when not given' do + capture_bench_output(:bmbm).must_equal BMBM_OUTPUT + end + + it 'correctly output when the label width is given (bmbm ignore it, but it is a frequent mistake)' do + capture_bench_output(:bmbm, 6).must_equal BMBM_OUTPUT + end + end + + describe 'Report' do + describe '#item' do + it 'shows the title, even if not a string' do + capture_bench_output(:bm) { |x| x.report(:title) {} }.must_include 'title' + capture_bench_output(:bmbm) { |x| x.report(:title) {} }.must_include 'title' + end + end + end + + describe 'Bugs' do + it '[ruby-dev:40906] can add in-place the time of execution of the block given' do + t = Benchmark::Tms.new + t.real.must_equal 0 + t.add! {} + t.real.wont_equal 0 end end end + +BM_OUTPUT = <<BENCH + user system total real +first --time-- --time-- --time-- ( --time--) +second --time-- --time-- --time-- ( --time--) +third --time-- --time-- --time-- ( --time--) +BENCH + +BM_OUTPUT_NO_LABEL = <<BENCH + user system total real + --time-- --time-- --time-- ( --time--) + --time-- --time-- --time-- ( --time--) + --time-- --time-- --time-- ( --time--) +BENCH + +BMBM_OUTPUT = <<BENCH +Rehearsal ----------------------------------------- +first --time-- --time-- --time-- ( --time--) +second --time-- --time-- --time-- ( --time--) +third --time-- --time-- --time-- ( --time--) +-------------------------------- total: --time--sec + + user system total real +first --time-- --time-- --time-- ( --time--) +second --time-- --time-- --time-- ( --time--) +third --time-- --time-- --time-- ( --time--) +BENCH + +BENCHMARK_OUTPUT_WITH_TOTAL_AVG = <<BENCH + user system total real +for: --time-- --time-- --time-- ( --time--) +times: --time-- --time-- --time-- ( --time--) +upto: --time-- --time-- --time-- ( --time--) +>total: --time-- --time-- --time-- ( --time--) +>avg: --time-- --time-- --time-- ( --time--) +BENCH |