method

assert

v1_8_7_72 - Show latest stable - Class: Test::Unit::Assertions

assert(boolean, message=nil)

public

Asserts that boolean is not false or nil.

Example:

  assert [1, 2].include?(5)

# File lib/test/unit/assertions.rb, line 60
      def assert(boolean, message=nil)
        _wrap_assertion do
          assert_block("assert should not be called with a block.") { !block_given? }
          assert_block(build_message(message, "<?> is not true.", boolean)) { boolean }
        end
      end

1Note

Use message param

szeryf · Mar 11, 2010

The +message+ param is invaluable in case test fails -- if you use it to display relevant info, you will find out what went wrong much faster.

Reworking the silly example above:

assert some_list.include?(5)

will only tell you that

<false> is not true.

which isn't terribly helpful, is it? But if you use +message+ like that:

assert some_list.include?(5), "some_list = #{some_list.inspect}"

the output will be:

some_list = [1, 2].
<false> is not true.

which in most cases should give you strong hints as to why the test failed.

assert

1Note

Use message param

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