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-rw-r--r--spec/ruby/core/string/swapcase_spec.rb129
1 files changed, 123 insertions, 6 deletions
diff --git a/spec/ruby/core/string/swapcase_spec.rb b/spec/ruby/core/string/swapcase_spec.rb
index 6d00906aad..bb89dee48f 100644
--- a/spec/ruby/core/string/swapcase_spec.rb
+++ b/spec/ruby/core/string/swapcase_spec.rb
@@ -23,8 +23,61 @@ describe "String#swapcase" do
end
ruby_version_is '2.4' do
- it "works for all of Unicode" do
- "äÖü".swapcase.should == "ÄöÜ"
+ 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
@@ -42,10 +95,74 @@ describe "String#swapcase!" do
end
ruby_version_is '2.4' do
- it "modifies self in place for all of Unicode" do
- a = "äÖü"
- a.swapcase!.should equal(a)
- a.should == "ÄöÜ"
+ 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