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|
$LOAD_PATH.unshift "./lib"
require 'benchmark'
require 'rspec/expectations'
include RSpec::Expectations
include RSpec::Matchers
n = 1000
puts "3 runs of #{n} times for each example running rspec-expectations #{RSpec::Expectations::Version::STRING} -- #{RUBY_ENGINE}/#{RUBY_VERSION}"
puts "Defining a custom matcher"
Benchmark.benchmark do |bm|
3.times do |i|
bm.report do
n.times do |j|
RSpec::Matchers.define :"define_matcher_#{i}_#{j}" do
match {}
end
end
end
end
end
puts "Getting an instance of a custom matcher"
RSpec::Matchers.define :be_a_multiple_of do |x|
match { |actual| (actual % x).zero? }
end
Benchmark.benchmark do |bm|
3.times do
bm.report do
n.times do |i|
be_a_multiple_of(i)
end
end
end
end
puts "Using a previously gotten custom matcher instance -- positive match"
Benchmark.benchmark do |bm|
1.upto(3) do |i|
matcher = be_a_multiple_of(i)
bm.report do
n.times do |j|
expect(i * j).to matcher
end
end
end
end
puts "Using a previously gotten custom matcher instance -- negative match"
Benchmark.benchmark do |bm|
2.upto(4) do |i|
matcher = be_a_multiple_of(i)
bm.report do
n.times do |j|
begin
expect(1 + i * j).to matcher
rescue RSpec::Expectations::ExpectationNotMetError
end
end
end
end
end
=begin
Results are below for:
- MRI 2.0.0, MRI 1.9.3, JRuby 1.7.4
- Against 2.14.3, 3.0.0.pre before matcher DSL rewrite, 3.0.0.pre after matcher DSL rewrite
Conclusions:
* Getting an instance of a custom matcher was insanely slow in 2.x,
and it looks like the `making_declared_methods_public` hack for 1.8.6
was the primary source of that. Without that, getting an instance of
a matcher is ~20x faster. To see what changed between 2.14.3 and
the commit used for this benchmark, go to:
https://github.com/rspec/rspec-expectations/compare/v2.14.3...4c47e4c43ee6961c755d325e73181b1f5b6bf097#diff-a51020971ade2c87f1d5b93f20d711c7L6
* With our new custom matcher DSL, using a matcher is approximately
the same perf. However, defining a matcher is a little bit faster,
and getting an instance of an already defined matcher is about 10x faster.
Overall, this is definitely a net win.
Results:
3 runs of 1000 times for each example running rspec-expectations 2.14.3 -- ruby/2.0.0
Defining a custom matcher
0.010000 0.000000 0.010000 ( 0.004612)
0.000000 0.000000 0.000000 ( 0.004674)
0.000000 0.000000 0.000000 ( 0.004944)
Getting an instance of a custom matcher
1.470000 0.010000 1.480000 ( 1.472602)
1.420000 0.000000 1.420000 ( 1.426760)
1.440000 0.000000 1.440000 ( 1.442283)
Using a previously gotten custom matcher instance -- positive match
0.000000 0.000000 0.000000 ( 0.002213)
0.000000 0.000000 0.000000 ( 0.002019)
0.000000 0.000000 0.000000 ( 0.001884)
Using a previously gotten custom matcher instance -- negative match
0.020000 0.000000 0.020000 ( 0.019378)
0.030000 0.000000 0.030000 ( 0.027001)
0.020000 0.010000 0.030000 ( 0.022310)
3 runs of 1000 times for each example running rspec-expectations 2.14.3 -- ruby/1.9.3
Defining a custom matcher
0.000000 0.000000 0.000000 ( 0.004455)
0.010000 0.000000 0.010000 ( 0.004849)
0.010000 0.000000 0.010000 ( 0.010495)
Getting an instance of a custom matcher
1.690000 0.010000 1.700000 ( 1.696415)
1.550000 0.000000 1.550000 ( 1.556858)
1.550000 0.000000 1.550000 ( 1.554830)
Using a previously gotten custom matcher instance -- positive match
0.000000 0.000000 0.000000 ( 0.002161)
0.000000 0.000000 0.000000 ( 0.002038)
0.010000 0.000000 0.010000 ( 0.002091)
Using a previously gotten custom matcher instance -- negative match
0.050000 0.010000 0.060000 ( 0.060512)
0.050000 0.000000 0.050000 ( 0.064532)
0.060000 0.010000 0.070000 ( 0.062206)
3 runs of 1000 times for each example running rspec-expectations 2.14.3 -- jruby/1.9.3
Defining a custom matcher
0.660000 0.010000 0.670000 ( 0.299000)
0.280000 0.000000 0.280000 ( 0.178000)
0.220000 0.010000 0.230000 ( 0.143000)
Getting an instance of a custom matcher
1.970000 0.030000 2.000000 ( 1.389000)
1.340000 0.030000 1.370000 ( 0.907000)
0.820000 0.030000 0.850000 ( 0.795000)
Using a previously gotten custom matcher instance -- positive match
0.110000 0.000000 0.110000 ( 0.058000)
0.050000 0.000000 0.050000 ( 0.036000)
0.030000 0.000000 0.030000 ( 0.030000)
Using a previously gotten custom matcher instance -- negative match
0.930000 0.010000 0.940000 ( 0.474000)
0.620000 0.000000 0.620000 ( 0.376000)
0.390000 0.000000 0.390000 ( 0.279000)
3 runs of 1000 times for each example running rspec-expectations 3.0.0.pre (before DSL rewrite) -- ruby/2.0.0
Defining a custom matcher
0.010000 0.000000 0.010000 ( 0.004719)
0.000000 0.000000 0.000000 ( 0.004424)
0.010000 0.000000 0.010000 ( 0.005562)
Getting an instance of a custom matcher
0.050000 0.000000 0.050000 ( 0.059949)
0.060000 0.000000 0.060000 ( 0.058208)
0.060000 0.010000 0.070000 ( 0.067402)
Using a previously gotten custom matcher instance -- positive match
0.010000 0.000000 0.010000 ( 0.001696)
0.000000 0.000000 0.000000 ( 0.001558)
0.000000 0.000000 0.000000 ( 0.001488)
Using a previously gotten custom matcher instance -- negative match
0.020000 0.000000 0.020000 ( 0.021522)
0.030000 0.000000 0.030000 ( 0.027728)
0.020000 0.000000 0.020000 ( 0.026185)
3 runs of 1000 times for each example running rspec-expectations 3.0.0.pre (before DSL rewrite) -- ruby/1.9.3
Defining a custom matcher
0.010000 0.000000 0.010000 ( 0.004650)
0.000000 0.000000 0.000000 ( 0.004658)
0.010000 0.000000 0.010000 ( 0.011111)
Getting an instance of a custom matcher
0.050000 0.010000 0.060000 ( 0.047230)
0.060000 0.000000 0.060000 ( 0.065500)
0.070000 0.000000 0.070000 ( 0.073099)
Using a previously gotten custom matcher instance -- positive match
0.000000 0.000000 0.000000 ( 0.002007)
0.000000 0.000000 0.000000 ( 0.002370)
0.010000 0.000000 0.010000 ( 0.002121)
Using a previously gotten custom matcher instance -- negative match
0.070000 0.010000 0.080000 ( 0.078960)
0.060000 0.000000 0.060000 ( 0.061351)
0.060000 0.000000 0.060000 ( 0.069949)
3 runs of 1000 times for each example running rspec-expectations 3.0.0.pre (before DSL rewrite) -- jruby/1.9.3
Defining a custom matcher
0.730000 0.010000 0.740000 ( 0.303000)
0.240000 0.010000 0.250000 ( 0.153000)
0.210000 0.000000 0.210000 ( 0.140000)
Getting an instance of a custom matcher
0.940000 0.010000 0.950000 ( 0.538000)
0.510000 0.000000 0.510000 ( 0.174000)
0.160000 0.000000 0.160000 ( 0.090000)
Using a previously gotten custom matcher instance -- positive match
0.120000 0.000000 0.120000 ( 0.053000)
0.040000 0.000000 0.040000 ( 0.025000)
0.030000 0.000000 0.030000 ( 0.026000)
Using a previously gotten custom matcher instance -- negative match
0.970000 0.010000 0.980000 ( 0.458000)
0.480000 0.010000 0.490000 ( 0.314000)
0.360000 0.000000 0.360000 ( 0.269000)
3 runs of 1000 times for each example running rspec-expectations 3.0.0.pre -- ruby/2.0.0
Defining a custom matcher
0.000000 0.000000 0.000000 ( 0.003138)
0.000000 0.000000 0.000000 ( 0.003083)
0.010000 0.000000 0.010000 ( 0.003448)
Getting an instance of a custom matcher
0.000000 0.000000 0.000000 ( 0.007273)
0.010000 0.000000 0.010000 ( 0.007096)
0.020000 0.000000 0.020000 ( 0.021662)
Using a previously gotten custom matcher instance -- positive match
0.000000 0.000000 0.000000 ( 0.002582)
0.000000 0.000000 0.000000 ( 0.001832)
0.010000 0.000000 0.010000 ( 0.001588)
Using a previously gotten custom matcher instance -- negative match
0.010000 0.000000 0.010000 ( 0.017756)
0.030000 0.000000 0.030000 ( 0.021225)
0.020000 0.010000 0.030000 ( 0.021281)
3 runs of 1000 times for each example running rspec-expectations 3.0.0.pre -- ruby/1.9.3
Defining a custom matcher
0.000000 0.000000 0.000000 ( 0.002903)
0.000000 0.000000 0.000000 ( 0.002919)
0.010000 0.000000 0.010000 ( 0.008956)
Getting an instance of a custom matcher
0.010000 0.000000 0.010000 ( 0.006640)
0.000000 0.000000 0.000000 ( 0.006557)
0.010000 0.000000 0.010000 ( 0.007869)
Using a previously gotten custom matcher instance -- positive match
0.010000 0.000000 0.010000 ( 0.003332)
0.000000 0.000000 0.000000 ( 0.003288)
0.000000 0.000000 0.000000 ( 0.002769)
Using a previously gotten custom matcher instance -- negative match
0.070000 0.010000 0.080000 ( 0.075547)
0.050000 0.000000 0.050000 ( 0.053149)
0.060000 0.010000 0.070000 ( 0.062583)
3 runs of 1000 times for each example running rspec-expectations 3.0.0.pre -- jruby/1.9.3
Defining a custom matcher
0.780000 0.020000 0.800000 ( 0.316000)
0.170000 0.010000 0.180000 ( 0.139000)
0.220000 0.000000 0.220000 ( 0.135000)
Getting an instance of a custom matcher
0.340000 0.000000 0.340000 ( 0.183000)
0.230000 0.010000 0.240000 ( 0.131000)
0.180000 0.000000 0.180000 ( 0.104000)
Using a previously gotten custom matcher instance -- positive match
0.170000 0.000000 0.170000 ( 0.076000)
0.070000 0.000000 0.070000 ( 0.049000)
0.110000 0.000000 0.110000 ( 0.047000)
Using a previously gotten custom matcher instance -- negative match
0.970000 0.010000 0.980000 ( 0.461000)
0.410000 0.000000 0.410000 ( 0.316000)
0.350000 0.010000 0.360000 ( 0.256000)
=end
|
