From: 7stud -- <dolgun@...>
Date: 2007-09-29T22:02:17+09:00
Subject: unit testing: example p. 156 pickaxe2

How do you make this example fail:

require "test/unit"

class TestsWhichFail < Test::Unit::TestCase
  def test_reading
    assert_not_nil(ARGF.read, "Read next line of input")
  end
end


I tried specifying an empty file on the command line, no file, a file
with two words in it, and a file that doesn't exist, but I can't get it
to fail.  Yet, the output in the book shows:

1 tests, 1 assertions, 1 failures, 0 errors
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