diff options
Diffstat (limited to 'activesupport')
| -rw-r--r-- | activesupport/CHANGELOG | 2 | ||||
| -rw-r--r-- | activesupport/lib/active_support/core_ext/name_error.rb | 15 | ||||
| -rw-r--r-- | activesupport/test/core_ext/name_error_test.rb | 27 |
3 files changed, 44 insertions, 0 deletions
diff --git a/activesupport/CHANGELOG b/activesupport/CHANGELOG index c5b4706639..d652e1d17c 100644 --- a/activesupport/CHANGELOG +++ b/activesupport/CHANGELOG @@ -1,5 +1,7 @@ *SVN* +* Add extention to obtain the missing constant from NameError instances. [Nicholas Seckar] + * Thoroughly document inflections. #5700 [petermichaux@gmail.com] * Added Module#alias_attribute [Jamis/DHH]. Example: diff --git a/activesupport/lib/active_support/core_ext/name_error.rb b/activesupport/lib/active_support/core_ext/name_error.rb new file mode 100644 index 0000000000..42b89d3d28 --- /dev/null +++ b/activesupport/lib/active_support/core_ext/name_error.rb @@ -0,0 +1,15 @@ + +# Add a +missing_name+ method to NameError instances. +class NameError < StandardError + + # Add a method to obtain the missing name from a NameError. + def missing_name + $1 if /((::)?([A-Z]\w*)(::[A-Z]\w*)*)$/ =~ message + end + + # Was this exception raised because the given name was missing? + def missing_name?(name) + missing_name == name.to_s + end + +end
\ No newline at end of file diff --git a/activesupport/test/core_ext/name_error_test.rb b/activesupport/test/core_ext/name_error_test.rb new file mode 100644 index 0000000000..13910d2e01 --- /dev/null +++ b/activesupport/test/core_ext/name_error_test.rb @@ -0,0 +1,27 @@ +require 'test/unit' +require File.dirname(__FILE__) + '/../../lib/active_support/core_ext/name_error' + +class NameErrorTest < Test::Unit::TestCase + + def test_name_error_should_set_missing_name + begin + SomeNameThatNobodyWillUse____Really ? 1 : 0 + flunk "?!?!" + rescue NameError => exc + assert_equal "SomeNameThatNobodyWillUse____Really", exc.missing_name + assert exc.missing_name?(:SomeNameThatNobodyWillUse____Really) + assert exc.missing_name?("SomeNameThatNobodyWillUse____Really") + end + end + + def test_missing_method_should_ignore_missing_name + begin + some_method_that_does_not_exist + flunk "?!?!" + rescue NameError => exc + assert_equal nil, exc.missing_name + assert ! exc.missing_name?(:Foo) + end + end + +end |