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require "minitest/autorun"
require "benchmark/ips"
require "stringio"
require "tmpdir"
class TestBenchmarkIPS < Minitest::Test
def setup
@old_stdout = $stdout
$stdout = StringIO.new
end
def teardown
$stdout = @old_stdout
end
def test_kwargs
Benchmark.ips(:time => 0.001, :warmup => 0.001, :quiet => false) do |x|
x.report("sleep 0.25") { sleep(0.25) }
end
assert $stdout.string.size > 0
end
def test_warmup0
$stdout = @old_stdout
out, err = capture_io do
Benchmark.ips(:time => 1, :warmup => 0, :quiet => false) do |x|
x.report("sleep 0.25") { sleep(0.25) }
end
end
refute_match(/Warming up -+/, out)
assert_empty err
end
def test_output
Benchmark.ips(1) do |x|
x.warmup = 0
x.time = 0.1
x.report("operation") { 100 * 100 }
end
assert $stdout.string.size > 0
end
def test_quiet
Benchmark.ips(nil, nil, true) do |x|
x.config(:warmup => 0.001, :time => 0.001)
x.report("operation") { 100 * 100 }
end
assert $stdout.string.size.zero?
Benchmark.ips(:quiet => true) do |x|
x.config(:warmup => 0.001, :time => 0.001)
x.report("operation") { 100 * 100 }
end
assert $stdout.string.size.zero?
Benchmark.ips do |x|
x.config(:warmup => 0.001, :time => 0.001)
x.quiet = true
x.report("operation") { 100 * 100 }
end
assert $stdout.string.size.zero?
end
def test_quiet_option_override
Benchmark.ips(quiet: true) do |x|
x.config(:warmup => 0.001, :time => 0.001)
x.quiet = false
x.report("operation") { 100 * 100 }
end
assert $stdout.string.size > 0
$stdout.truncate(0)
Benchmark.ips(quiet: true) do |x|
x.config(quiet: false, warmup: 0.001, time: 0.001)
x.report("operation") { 100 * 100 }
end
assert $stdout.string.size > 0
$stdout.truncate(0)
Benchmark.ips(quiet: true, warmup: 0.001, time: 0.001) do |x|
# Calling config should not make quiet option overridden when no specified
x.config({})
x.report("operation") { 100 * 100 }
end
assert $stdout.string.size.zero?
end
def test_ips
report = Benchmark.ips do |x|
x.config(:time => 1, :warmup => 1)
x.report("sleep 0.25") { sleep(0.25) }
x.report("sleep 0.05") { sleep(0.05) }
x.compare!
end
rep1 = report.entries[0]
rep2 = report.entries[1]
assert_equal "sleep 0.25", rep1.label
assert_equal 4, rep1.iterations
assert_in_delta 4.0, rep1.ips, 0.2
assert_equal "sleep 0.05", rep2.label
assert_in_delta 20.0, rep2.iterations.to_f, 1.0
assert_in_delta 20.0, rep2.ips, 2.0
end
def test_ips_alternate_config
report = Benchmark.ips do |x|
x.time = 1
x.warmup = 1
x.report("sleep 0.25") { sleep(0.25) }
end
rep = report.entries.first
assert_equal "sleep 0.25", rep.label
assert_equal 4, rep.iterations
assert_in_delta 4.0, rep.ips, 0.4
end
def test_ips_old_config
Benchmark.ips(1, 1) do |x|
assert_equal 1, x.time
assert_equal 1, x.warmup
return
end
end
def test_ips_defaults
report = Benchmark.ips do |x|
x.report("sleep 0.25") { sleep(0.25) }
end
rep = report.entries.first
assert_equal "sleep 0.25", rep.label
assert_equal 4*5, rep.iterations
assert_in_delta 4.0, rep.ips, 0.2
end
def test_ips_report_using_symbol
report = Benchmark.ips do |x|
x.warmup = 0
x.time = 0.1
x.report(:sleep_a_quarter_second) { 1 + 1 }
end
rep = report.entries.first
assert_equal :sleep_a_quarter_second, rep.label
end
def test_ips_default_data
report = Benchmark.ips do |x|
x.config(:warmup => 0.001, :time => 0.001)
x.report("sleep 0.25") { sleep(0.25) }
end
all_data = report.data
assert all_data
assert_equal "sleep 0.25", all_data[0][:name]
assert all_data[0][:ips]
assert all_data[0][:stddev]
end
def test_ips_empty
report = Benchmark.ips do |x|
x.config(:warmup => 0.001, :time => 0.001)
end
all_data = report.data
assert all_data
assert_equal [], all_data
end
def test_json_output
json_file = Tempfile.new("data.json")
Benchmark.ips do |x|
x.config(:warmup => 0.001, :time => 0.001)
x.report("sleep 0.25") { sleep(0.25) }
x.json! json_file.path
end
json_data = json_file.read
assert json_data
data = JSON.parse json_data
assert data
assert_equal 1, data.size
assert_equal "sleep 0.25", data[0]["name"]
assert data[0]["ips"]
assert data[0]["stddev"]
end
def test_json_output_to_stdout
Benchmark.ips do |x|
x.config(:warmup => 0.001, :time => 0.001)
x.report("sleep 0.25") { sleep(0.25) }
x.quiet = true
x.json! $stdout
end
assert $stdout.string.size > 0
data = JSON.parse $stdout.string
assert data
assert_equal 1, data.size
assert_equal "sleep 0.25", data[0]["name"]
assert data[0]["ips"]
assert data[0]["stddev"]
end
def test_hold!
temp_file_name = Dir::Tmpname.create(["benchmark-ips", ".tmp"]) { }
Benchmark.ips(:time => 0.001, :warmup => 0.001) do |x|
x.report("operation") { 100 * 100 }
x.report("operation2") { 100 * 100 }
x.hold! temp_file_name
end
assert File.exist?(temp_file_name)
File.unlink(temp_file_name)
end
def test_small_warmup_and_time
report = Benchmark.ips do |x|
x.config(:warmup => 0.0000000001, :time => 0.001)
x.report("addition") { 1 + 2 }
end
assert_operator report.entries[0].iterations, :>=, 1
report = Benchmark.ips do |x|
x.config(:warmup => 0, :time => 0.0000000001)
x.report("addition") { 1 + 2 }
end
assert_equal 1, report.entries[0].iterations
report = Benchmark.ips do |x|
x.config(:warmup => 0.001, :time => 0.0000000001)
x.report("addition") { 1 + 2 }
end
assert_operator report.entries[0].iterations, :>=, 1
report = Benchmark.ips do |x|
x.config(:warmup => 0.0000000001, :time => 0.0000000001)
x.report("addition") { 1 + 2 }
end
assert_operator report.entries[0].iterations, :>=, 1
report = Benchmark.ips do |x|
x.config(:warmup => 0, :time => 0)
x.report("addition") { 1 + 2 }
end
assert_equal 1, report.entries[0].iterations
end
def test_humanize_duration
assert_equal Benchmark::IPS::Helpers.humanize_duration(0.000000001), "0.00 ns"
assert_equal Benchmark::IPS::Helpers.humanize_duration(123.456789), "123.46 ns"
assert_equal Benchmark::IPS::Helpers.humanize_duration(12345.67890123), "12.35 μs"
assert_equal Benchmark::IPS::Helpers.humanize_duration(123456789.0123456789), "123.46 ms"
assert_equal Benchmark::IPS::Helpers.humanize_duration(123456789012.3456789012), "123.46 s"
end
def test_quick
Benchmark.ips_quick(:upcase, :downcase, on: "Hello World!", warmup: 0.001, time: 0.001)
assert $stdout.string.size > 0
end
def test_quick_on_kernel
Benchmark.ips_quick(:srand, :rand, warmup: 0.001, time: 0.001)
assert $stdout.string.size > 0
end
end
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