Implement Chars#swapcase.
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@ -118,6 +118,14 @@ def downcase
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chars Unicode.downcase(@wrapped_string)
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end
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# Converts characters in the string to the opposite case.
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#
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# Example:
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# 'El Cañón".mb_chars.swapcase.to_s # => "eL cAÑÓN"
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def swapcase
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chars Unicode.swapcase(@wrapped_string)
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end
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# Converts the first character to uppercase and the remainder to lowercase.
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#
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# Example:
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@ -293,9 +293,17 @@ def upcase(string)
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apply_mapping string, :uppercase_mapping
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end
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def swapcase(string)
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apply_mapping string, :swapcase_mapping
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end
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# Holds data about a codepoint in the Unicode database
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class Codepoint
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attr_accessor :code, :combining_class, :decomp_type, :decomp_mapping, :uppercase_mapping, :lowercase_mapping
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def swapcase_mapping
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uppercase_mapping > 0 ? uppercase_mapping : lowercase_mapping
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end
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end
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# Holds static data from the Unicode database
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@ -106,7 +106,7 @@ def test_split_should_return_an_array_of_chars_instances
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end
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end
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%w{capitalize downcase lstrip reverse rstrip upcase}.each do |method|
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%w{capitalize downcase lstrip reverse rstrip swapcase upcase}.each do |method|
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class_eval(<<-EOTESTS)
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def test_#{method}_bang_should_return_self_when_modifying_wrapped_string
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chars = ' él piDió Un bUen café '
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@ -161,6 +161,7 @@ def test_string_methods_are_chainable
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assert chars('').decompose.kind_of?(ActiveSupport::Multibyte.proxy_class)
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assert chars('').compose.kind_of?(ActiveSupport::Multibyte.proxy_class)
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assert chars('').tidy_bytes.kind_of?(ActiveSupport::Multibyte.proxy_class)
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assert chars('').swapcase.kind_of?(ActiveSupport::Multibyte.proxy_class)
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end
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def test_should_be_equal_to_the_wrapped_string
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@ -432,6 +433,11 @@ def test_downcase_should_downcase_ascii_characters
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assert_equal 'abc', 'aBc'.mb_chars.downcase
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end
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def test_swapcase_should_swap_ascii_characters
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assert_equal '', ''.mb_chars.swapcase
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assert_equal 'AbC', 'aBc'.mb_chars.swapcase
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end
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def test_capitalize_should_work_on_ascii_characters
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assert_equal '', ''.mb_chars.capitalize
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assert_equal 'Abc', 'abc'.mb_chars.capitalize
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@ -466,10 +472,15 @@ def test_upcase_should_be_unicode_aware
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end
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def test_downcase_should_be_unicode_aware
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assert_equal "абвгд\0f", chars("аБвгд\0f").downcase
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assert_equal "абвгд\0f", chars("аБвгд\0F").downcase
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assert_equal 'こにちわ', chars('こにちわ').downcase
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end
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def test_swapcase_should_be_unicode_aware
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assert_equal "аaéÜ\0f", chars("АAÉü\0F").swapcase
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assert_equal 'こにちわ', chars('こにちわ').swapcase
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end
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def test_capitalize_should_be_unicode_aware
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{ 'аБвг аБвг' => 'Абвг абвг',
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'аБвг АБВГ' => 'Абвг абвг',
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