From: Josh Cheek <josh.cheek@...>
Date: 2010-03-30T16:57:44+09:00
Subject: Re: return number of spaces at the beginning of a line

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Two things:
1) The name of the method multi_line_spaces won't actually test, because
TestUnit only considers a method to be a test if it begins with 'test' so
you should change it's name to test_multi_line_spaces

2) I thought of another test you should add. Throwing wholly bad data at it.
In this case, nil
  def test_nil
    assert_raises NoMethodError do
      leading_spaces nil
    end
  end

'The Pragmatic Programmer' says that it is better to crash early, so I
tested that it should throw an error.

You might also consider what you would like it to do in the event that you
pass it something not a string. Perhaps invoke the to_s method and then get
the length of the leading whitespace. Perhaps raise a different error.

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