Remove koans directory from source control.

[ruby_koans.git] / koans / about_nil.rb

diff --git a/koans/about_nil.rb b/koans/about_nil.rb
deleted file mode 100644 (file)
index 1a74ed0..0000000
--- a/koans/about_nil.rb
+++ /dev/null
@@ -1,38 +0,0 @@
-require File.expand_path(File.dirname(__FILE__) + '/edgecase')
-
-class AboutNil < EdgeCase::Koan
-  def test_nil_is_an_object
-    assert_equal __, nil.is_a?(Object), "Unlike NULL in other languages"
-  end
-
-  def test_you_dont_get_null_pointer_errors_when_calling_methods_on_nil
-    # What happens when you call a method that doesn't exist.  The
-    # following begin/rescue/end code block captures the exception and
-    # makes some assertions about it.
-    begin
-      nil.some_method_nil_doesnt_know_about
-    rescue Exception => ex
-      # What exception has been caught?
-      assert_equal __, ex.class
-
-      # What message was attached to the exception?
-      # (HINT: replace __ with part of the error message.)
-      assert_match(/__/, ex.message)
-    end
-  end
-
-  def test_nil_has_a_few_methods_defined_on_it
-    assert_equal __, nil.nil?
-    assert_equal __, nil.to_s
-    assert_equal __, nil.inspect
-
-    # THINK ABOUT IT:
-    #
-    # Is it better to use
-    #    obj.nil?
-    # or
-    #    obj == nil
-    # Why?
-  end
-
-end