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ruby--ruby/spec/ruby/core/string/shared/succ.rb
Jeremy Evans ffd0820ab3 Deprecate taint/trust and related methods, and make the methods no-ops
This removes the related tests, and puts the related specs behind
version guards.  This affects all code in lib, including some
libraries that may want to support older versions of Ruby.
2019-11-18 01:00:25 +02:00

90 lines
3.1 KiB
Ruby

# -*- encoding: binary -*-
describe :string_succ, shared: true do
it "returns an empty string for empty strings" do
"".send(@method).should == ""
end
it "returns the successor by increasing the rightmost alphanumeric (digit => digit, letter => letter with same case)" do
"abcd".send(@method).should == "abce"
"THX1138".send(@method).should == "THX1139"
"<<koala>>".send(@method).should == "<<koalb>>"
"==A??".send(@method).should == "==B??"
end
it "increases non-alphanumerics (via ascii rules) if there are no alphanumerics" do
"***".send(@method).should == "**+"
"**`".send(@method).should == "**a"
end
it "increases the next best alphanumeric (jumping over non-alphanumerics) if there is a carry" do
"dz".send(@method).should == "ea"
"HZ".send(@method).should == "IA"
"49".send(@method).should == "50"
"izz".send(@method).should == "jaa"
"IZZ".send(@method).should == "JAA"
"699".send(@method).should == "700"
"6Z99z99Z".send(@method).should == "7A00a00A"
"1999zzz".send(@method).should == "2000aaa"
"NZ/[]ZZZ9999".send(@method).should == "OA/[]AAA0000"
end
it "increases the next best character if there is a carry for non-alphanumerics" do
"(\xFF".send(@method).should == ")\x00"
"`\xFF".send(@method).should == "a\x00"
"<\xFF\xFF".send(@method).should == "=\x00\x00"
end
it "adds an additional character (just left to the last increased one) if there is a carry and no character left to increase" do
"z".send(@method).should == "aa"
"Z".send(@method).should == "AA"
"9".send(@method).should == "10"
"zz".send(@method).should == "aaa"
"ZZ".send(@method).should == "AAA"
"99".send(@method).should == "100"
"9Z99z99Z".send(@method).should == "10A00a00A"
"ZZZ9999".send(@method).should == "AAAA0000"
"/[]9999".send(@method).should == "/[]10000"
"/[]ZZZ9999".send(@method).should == "/[]AAAA0000"
"Z/[]ZZZ9999".send(@method).should == "AA/[]AAA0000"
# non-alphanumeric cases
"\xFF".send(@method).should == "\x01\x00"
"\xFF\xFF".send(@method).should == "\x01\x00\x00"
end
it "returns subclass instances when called on a subclass" do
StringSpecs::MyString.new("").send(@method).should be_an_instance_of(StringSpecs::MyString)
StringSpecs::MyString.new("a").send(@method).should be_an_instance_of(StringSpecs::MyString)
StringSpecs::MyString.new("z").send(@method).should be_an_instance_of(StringSpecs::MyString)
end
ruby_version_is ''...'2.7' do
it "taints the result if self is tainted" do
["", "a", "z", "Z", "9", "\xFF", "\xFF\xFF"].each do |s|
s.taint.send(@method).tainted?.should == true
end
end
end
end
describe :string_succ_bang, shared: true do
it "is equivalent to succ, but modifies self in place (still returns self)" do
["", "abcd", "THX1138"].each do |s|
r = s.dup.send(@method)
s.send(@method).should equal(s)
s.should == r
end
end
it "raises a #{frozen_error_class} if self is frozen" do
-> { "".freeze.send(@method) }.should raise_error(frozen_error_class)
-> { "abcd".freeze.send(@method) }.should raise_error(frozen_error_class)
end
end