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Type:
Module

Coverage provides coverage measurement feature for Ruby. This feature is experimental, so these APIs may be changed in future.

Usage

  1. require “coverage.so”

  2. do ::start

  3. require or load Ruby source file

  4. ::result will return a hash that contains filename as key and coverage array as value. A coverage array gives, for each line, the number of line execution by the interpreter. A nil value means coverage is disabled for this line (lines like else and end).

Example

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[foo.rb]
s = 0
10.times do |x|
  s += x
end
 
if s == 45
  p :ok
else
  p :ng
end
[EOF]
 
require "coverage.so"
Coverage.start
require "foo.rb"
p Coverage.result  #=> {"foo.rb"=>[1, 1, 10, nil, nil, 1, 1, nil, 0, nil]}
start
  • References/Ruby on Rails/Ruby/Classes/Coverage

Coverage.start => nil Class Public methods Enables coverage measurement

2025-01-10 15:47:30
result
  • References/Ruby on Rails/Ruby/Classes/Coverage

Coverage.result => hash Class Public methods Returns a hash that contains

2025-01-10 15:47:30