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• Install ruby-prof gem


gem install ruby-prof


• Prepare fixtures test/fixtures/xxx for testing. Test one by one as the following:


ruby test/unit/xxx_test.rb


• Edit test/performance/browsing_test.rb


require 'test_helper'
require 'performance_test_help'

# Profiling results for each test method are written to tmp/performance.
class BrowsingTest < ActionController::PerformanceTest
def test_homepage
get '/'
end
end


• Benchmarking


rake test:benchmark



Started
BrowsingTest#test_homepage (1062 ms warmup)
process_time: 406 ms
memory: 0.00 KB
objects: 0
gc_runs: 0
gc_time: 0 ms
.
Finished in 10.501 seconds.

5 tests, 0 assertions, 0 failures, 0 errors


• Profiling


rake test:profile



Started
BrowsingTest#test_homepage (858 ms warmup)
process_time: 655 ms
memory: unsupported
objects: unsupported
.
Finished in 32.845 seconds.

3 tests, 0 assertions, 0 failures, 0 errors


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