method

assert_raise_with_message

v2_1_10 - Show latest stable - 0 notes - Class: Test::Unit::Assertions

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What's this?

assert_raise_with_message(exception, expected, msg = nil, &block) public

Tests if the given block raises an exception with the expected message.

assert_raise_with_message(RuntimeError, "foo") do
  nil #Fails, no Exceptions are raised
end

assert_raise_with_message(RuntimeError, "foo") do
  raise ArgumentError, "foo" #Fails, different Exception is raised
end

assert_raise_with_message(RuntimeError, "foo") do
  raise "bar" #Fails, RuntimeError is raised but the message differs
end

assert_raise_with_message(RuntimeError, "foo") do
  raise "foo" #Raises RuntimeError with the message, so assertion succeeds
end

Show source

# File lib/test/unit/assertions.rb, line 91
      def assert_raise_with_message(exception, expected, msg = nil, &block)
        case expected
        when String
          assert = :assert_equal
        when Regexp
          assert = :assert_match
        else
          raise TypeError, "Expected #{expected.inspect} to be a kind of String or Regexp, not #{expected.class}"
        end

        ex = assert_raise(exception, *msg) {yield}
        msg = message(msg, "") {"Expected Exception(#{exception}) was raised, but the message doesn't match"}

        if assert == :assert_equal
          assert_equal(expected, ex.message, msg)
        else
          msg = message(msg) { "Expected #{mu_pp expected} to match #{mu_pp ex.message}" }
          assert expected =~ ex.message, msg
          block.binding.eval("proc{|_|$~=_}").call($~)
        end
        ex
      end

assert_raise_with_message

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