diff options
Diffstat (limited to 'activesupport/test/core_ext/object/try_test.rb')
-rw-r--r-- | activesupport/test/core_ext/object/try_test.rb | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/activesupport/test/core_ext/object/try_test.rb b/activesupport/test/core_ext/object/try_test.rb new file mode 100644 index 0000000000..8b754ced53 --- /dev/null +++ b/activesupport/test/core_ext/object/try_test.rb @@ -0,0 +1,91 @@ +require 'abstract_unit' +require 'active_support/core_ext/object' + +class ObjectTryTest < ActiveSupport::TestCase + def setup + @string = "Hello" + end + + def test_nonexisting_method + method = :undefined_method + assert !@string.respond_to?(method) + assert_nil @string.try(method) + end + + def test_nonexisting_method_with_arguments + method = :undefined_method + assert !@string.respond_to?(method) + assert_nil @string.try(method, 'llo', 'y') + end + + def test_nonexisting_method_bang + method = :undefined_method + assert !@string.respond_to?(method) + assert_raise(NoMethodError) { @string.try!(method) } + end + + def test_nonexisting_method_with_arguments_bang + method = :undefined_method + assert !@string.respond_to?(method) + assert_raise(NoMethodError) { @string.try!(method, 'llo', 'y') } + end + + def test_try_only_block_bang + assert_equal @string.reverse, @string.try! { |s| s.reverse } + end + + def test_valid_method + assert_equal 5, @string.try(:size) + end + + def test_argument_forwarding + assert_equal 'Hey', @string.try(:sub, 'llo', 'y') + end + + def test_block_forwarding + assert_equal 'Hey', @string.try(:sub, 'llo') { |match| 'y' } + end + + def test_nil_to_type + assert_nil nil.try(:to_s) + assert_nil nil.try(:to_i) + end + + def test_false_try + assert_equal 'false', false.try(:to_s) + end + + def test_try_only_block + assert_equal @string.reverse, @string.try { |s| s.reverse } + end + + def test_try_only_block_nil + ran = false + nil.try { ran = true } + assert_equal false, ran + end + + def test_try_with_private_method_bang + klass = Class.new do + private + + def private_method + 'private method' + end + end + + assert_raise(NoMethodError) { klass.new.try!(:private_method) } + end + + def test_try_with_private_method + klass = Class.new do + private + + def private_method + 'private method' + end + end + + assert_nil klass.new.try(:private_method) + end +end |