109 lines
3 KiB
Ruby
109 lines
3 KiB
Ruby
# frozen_string_literal: true
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require 'test_helper'
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class StatsFromDirTest < ActiveSupport::TestCase
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test "that it works" do
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dir = fixtures_dir("stats/significant")
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branch_info = {}
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branch_info["loser"] = { desc: "Old commit", time: Time.now, file: dir.join("loser.bench.txt"), name: "loser" }
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branch_info["winner"] = { desc: "I am the new commit", time: Time.now + 1, file: dir.join("winner.bench.txt"), name: "winner" }
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stats = DerailedBenchmarks::StatsFromDir.new(branch_info).call
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newest = stats.newest
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oldest = stats.oldest
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assert newest.average < oldest.average
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assert_equal "winner", newest.name
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assert_equal "loser", oldest.name
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assert_in_delta 0.26, stats.d_max, 0.01
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assert_in_delta 0.1730818382602285, stats.d_critical, 0.00001
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assert_equal true, stats.significant?
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format = DerailedBenchmarks::StatsFromDir::FORMAT
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assert_equal "1.0062", format % stats.x_faster
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assert_equal "0.6147", format % stats.percent_faster
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assert_equal "11.3844", format % newest.median
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end
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test "banner faster" do
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dir = fixtures_dir("stats/significant")
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branch_info = {}
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branch_info["loser"] = { desc: "Old commit", time: Time.now, file: dir.join("loser.bench.txt"), name: "loser" }
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branch_info["winner"] = { desc: "I am the new commit", time: Time.now + 1, file: dir.join("winner.bench.txt"), name: "winner" }
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stats = DerailedBenchmarks::StatsFromDir.new(branch_info).call
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newest = stats.newest
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oldest = stats.oldest
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# Test fixture for banner
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def stats.d_max
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"0.037"
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end
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def stats.d_critical
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"0.001"
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end
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def newest.median
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10.5
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end
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def oldest.median
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11.0
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end
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expected = <<~EOM
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[winner] "I am the new commit" - (10.5 seconds)
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FASTER 🚀🚀🚀 by:
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1.0476x [older/newer]
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4.5455% [(older - newer) / older * 100]
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[loser] "Old commit" - (11.0 seconds)
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EOM
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actual = StringIO.new
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stats.banner(actual)
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assert_match expected, actual.string
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end
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test "banner slower" do
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dir = fixtures_dir("stats/significant")
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branch_info = {}
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branch_info["loser"] = { desc: "I am the new commit", time: Time.now, file: dir.join("loser.bench.txt"), name: "loser" }
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branch_info["winner"] = { desc: "Old commit", time: Time.now - 10, file: dir.join("winner.bench.txt"), name: "winner" }
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stats = DerailedBenchmarks::StatsFromDir.new(branch_info).call
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newest = stats.newest
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oldest = stats.oldest
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def oldest.median
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10.5
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end
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def newest.median
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11.0
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end
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expected = <<~EOM
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[loser] "I am the new commit" - (11.0 seconds)
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SLOWER 🐢🐢🐢 by:
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0.9545x [older/newer]
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-4.7619% [(older - newer) / older * 100]
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[winner] "Old commit" - (10.5 seconds)
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EOM
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actual = StringIO.new
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stats.banner(actual)
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assert_match expected, actual.string
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end
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test "stats from samples with slightly different sizes" do
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stats = DerailedBenchmarks::StatsFromDir.new({})
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out = stats.statistical_test([100,101,102, 100, 101, 99], [1,3, 3, 2])
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assert out[:alternative]
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end
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end
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