Module: Minitest::Utils::Assertions

Included in:
Test
Defined in:
lib/minitest/utils/extension.rb

Instance Method Summary collapse

Instance Method Details

#assert(test, message = nil) ⇒ Object 



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# File 'lib/minitest/utils/extension.rb', line 6

def assert(test, message = nil)
  message ||= "expected: truthy value\ngot: #{mu_pp(test)}"
  super
end

#diff(expected, actual) ⇒ Object 



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# File 'lib/minitest/utils/extension.rb', line 16

def diff(expected, actual)
  expected = mu_pp_for_diff(expected)
  actual   = mu_pp_for_diff(actual)

  a = expected.scan(/\w+|\W+/)
  b = actual.scan(/\w+|\W+/)

  exp_out = +""
  act_out = +""

  Diff::LCS
    .sdiff(a, b)
    .chunk_while {|a, b| a.action == b.action }
    .each do |group|
      action  = group.first.action
      old_str = group.filter_map(&:old_element).join
      new_str = group.filter_map(&:new_element).join

      case action
      when "="
        exp_out << old_str
        act_out << new_str
      when "-"
        exp_out << Utils.color(old_str, :red, bgcolor: :red)
      when "+"
        act_out << Utils.color(new_str, :green, bgcolor: :green)
      when "!"
        exp_out << Utils.color(old_str, :red, bgcolor: :red)
        act_out << Utils.color(new_str, :green, bgcolor: :green)
      end
    end

  "#{Utils.color('expected: ', :red)} #{exp_out}\n" \
    "#{Utils.color('  actual: ', :red)} #{act_out}"
end

#refute(test, message = nil) ⇒ Object 



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# File 'lib/minitest/utils/extension.rb', line 11

def refute(test, message = nil)
  message ||= "expected: falsy value\ngot: #{mu_pp(test)}"
  super
end