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# -*- encoding: utf-8 -*-
require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "String#swapcase" do
it "returns a new string with all uppercase chars from self converted to lowercase and vice versa" do
"Hello".swapcase.should == "hELLO"
"cYbEr_PuNk11".swapcase.should == "CyBeR_pUnK11"
"+++---111222???".swapcase.should == "+++---111222???"
end
it "taints resulting string when self is tainted" do
"".taint.swapcase.tainted?.should == true
"hello".taint.swapcase.tainted?.should == true
end
ruby_version_is ''...'2.4' do
it "is locale insensitive (only upcases a-z and only downcases A-Z)" do
"ÄÖÜ".swapcase.should == "ÄÖÜ"
"ärger".swapcase.should == "äRGER"
"BÄR".swapcase.should == "bÄr"
end
end
ruby_version_is '2.4' do
describe "full Unicode case mapping" do
it "works for all of Unicode with no option" do
"äÖü".swapcase.should == "ÄöÜ"
end
it "updates string metadata" do
swapcased = "Aßet".swapcase
swapcased.should == "aSSET"
swapcased.size.should == 5
swapcased.bytesize.should == 5
swapcased.ascii_only?.should be_true
end
end
describe "ASCII-only case mapping" do
it "does not swapcase non-ASCII characters" do
"aßet".swapcase(:ascii).should == "AßET"
end
end
describe "full Unicode case mapping adapted for Turkic languages" do
it "swaps case of ASCII characters according to Turkic semantics" do
"aiS".swapcase(:turkic).should == "Aİs"
end
it "allows Lithuanian as an extra option" do
"aiS".swapcase(:turkic, :lithuanian).should == "Aİs"
end
it "does not allow any other additional option" do
lambda { "aiS".swapcase(:turkic, :ascii) }.should raise_error(ArgumentError)
end
end
describe "full Unicode case mapping adapted for Lithuanian" do
it "currently works the same as full Unicode case mapping" do
"Iß".swapcase(:lithuanian).should == "iSS"
end
it "allows Turkic as an extra option (and applies Turkic semantics)" do
"iS".swapcase(:lithuanian, :turkic).should == "İs"
end
it "does not allow any other additional option" do
lambda { "aiS".swapcase(:lithuanian, :ascii) }.should raise_error(ArgumentError)
end
end
it "does not allow the :fold option for upcasing" do
lambda { "abc".swapcase(:fold) }.should raise_error(ArgumentError)
end
it "does not allow invalid options" do
lambda { "abc".swapcase(:invalid_option) }.should raise_error(ArgumentError)
end
end
it "returns subclass instances when called on a subclass" do
StringSpecs::MyString.new("").swapcase.should be_an_instance_of(StringSpecs::MyString)
StringSpecs::MyString.new("hello").swapcase.should be_an_instance_of(StringSpecs::MyString)
end
end
describe "String#swapcase!" do
it "modifies self in place" do
a = "cYbEr_PuNk11"
a.swapcase!.should equal(a)
a.should == "CyBeR_pUnK11"
end
ruby_version_is '2.4' do
describe "full Unicode case mapping" do
it "modifies self in place for all of Unicode with no option" do
a = "äÖü"
a.swapcase!
a.should == "ÄöÜ"
end
it "updates string metadata" do
swapcased = "Aßet"
swapcased.swapcase!
swapcased.should == "aSSET"
swapcased.size.should == 5
swapcased.bytesize.should == 5
swapcased.ascii_only?.should be_true
end
end
describe "modifies self in place for ASCII-only case mapping" do
it "does not swapcase non-ASCII characters" do
a = "aßet"
a.swapcase!(:ascii)
a.should == "AßET"
end
end
describe "modifies self in place for full Unicode case mapping adapted for Turkic languages" do
it "swaps case of ASCII characters according to Turkic semantics" do
a = "aiS"
a.swapcase!(:turkic)
a.should == "Aİs"
end
it "allows Lithuanian as an extra option" do
a = "aiS"
a.swapcase!(:turkic, :lithuanian)
a.should == "Aİs"
end
it "does not allow any other additional option" do
lambda { a = "aiS"; a.swapcase!(:turkic, :ascii) }.should raise_error(ArgumentError)
end
end
describe "full Unicode case mapping adapted for Lithuanian" do
it "currently works the same as full Unicode case mapping" do
a = "Iß"
a.swapcase!(:lithuanian)
a.should == "iSS"
end
it "allows Turkic as an extra option (and applies Turkic semantics)" do
a = "iS"
a.swapcase!(:lithuanian, :turkic)
a.should == "İs"
end
it "does not allow any other additional option" do
lambda { a = "aiS"; a.swapcase!(:lithuanian, :ascii) }.should raise_error(ArgumentError)
end
end
it "does not allow the :fold option for upcasing" do
lambda { a = "abc"; a.swapcase!(:fold) }.should raise_error(ArgumentError)
end
it "does not allow invalid options" do
lambda { a = "abc"; a.swapcase!(:invalid_option) }.should raise_error(ArgumentError)
end
end
it "returns nil if no modifications were made" do
a = "+++---111222???"
a.swapcase!.should == nil
a.should == "+++---111222???"
"".swapcase!.should == nil
end
it "raises a #{frozen_error_class} when self is frozen" do
["", "hello"].each do |a|
a.freeze
lambda { a.swapcase! }.should raise_error(frozen_error_class)
end
end
end
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