method

assert_output

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assert_output(stdout = nil, stderr = nil) public

Fails if stdout or stderr do not output the expected results. Pass in nil if you don’t care about that streams output. Pass in “” if you require it to be silent.

See also: #assert_silent

Show source

# File lib/minitest/unit.rb, line 311
    def assert_output stdout = nil, stderr = nil
      out, err = capture_io do
        yield
      end

      x = assert_equal stdout, out, "In stdout" if stdout
      y = assert_equal stderr, err, "In stderr" if stderr

      (!stdout || x) && (!stderr || y)
    end

assert_output

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