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describe :string_concat, shared: true do
it "concatenates the given argument to self and returns self" do
str = 'hello '
str.send(@method, 'world').should equal(str)
str.should == "hello world"
end
it "converts the given argument to a String using to_str" do
obj = mock('world!')
obj.should_receive(:to_str).and_return("world!")
a = 'hello '.send(@method, obj)
a.should == 'hello world!'
end
it "raises a TypeError if the given argument can't be converted to a String" do
-> { 'hello '.send(@method, []) }.should raise_error(TypeError)
-> { 'hello '.send(@method, mock('x')) }.should raise_error(TypeError)
end
it "raises a #{frozen_error_class} when self is frozen" do
a = "hello"
a.freeze
-> { a.send(@method, "") }.should raise_error(frozen_error_class)
-> { a.send(@method, "test") }.should raise_error(frozen_error_class)
end
it "returns a String when given a subclass instance" do
a = "hello"
a.send(@method, StringSpecs::MyString.new(" world"))
a.should == "hello world"
a.should be_an_instance_of(String)
end
it "returns an instance of same class when called on a subclass" do
str = StringSpecs::MyString.new("hello")
str.send(@method, " world")
str.should == "hello world"
str.should be_an_instance_of(StringSpecs::MyString)
end
ruby_version_is ''...'2.7' do
it "taints self if other is tainted" do
"x".send(@method, "".taint).tainted?.should == true
"x".send(@method, "y".taint).tainted?.should == true
end
it "untrusts self if other is untrusted" do
"x".send(@method, "".untrust).untrusted?.should == true
"x".send(@method, "y".untrust).untrusted?.should == true
end
end
describe "with Integer" do
it "concatenates the argument interpreted as a codepoint" do
b = "".send(@method, 33)
b.should == "!"
b.encode!(Encoding::UTF_8)
b.send(@method, 0x203D)
b.should == "!\u203D"
end
# #5855
it "returns a BINARY string if self is US-ASCII and the argument is between 128-255 (inclusive)" do
a = ("".encode(Encoding::US_ASCII).send(@method, 128))
a.encoding.should == Encoding::BINARY
a.should == 128.chr
a = ("".encode(Encoding::US_ASCII).send(@method, 255))
a.encoding.should == Encoding::BINARY
a.should == 255.chr
end
it "raises RangeError if the argument is an invalid codepoint for self's encoding" do
-> { "".encode(Encoding::US_ASCII).send(@method, 256) }.should raise_error(RangeError)
-> { "".encode(Encoding::EUC_JP).send(@method, 0x81) }.should raise_error(RangeError)
end
it "raises RangeError if the argument is negative" do
-> { "".send(@method, -200) }.should raise_error(RangeError)
-> { "".send(@method, -bignum_value) }.should raise_error(RangeError)
end
it "doesn't call to_int on its argument" do
x = mock('x')
x.should_not_receive(:to_int)
-> { "".send(@method, x) }.should raise_error(TypeError)
end
it "raises a #{frozen_error_class} when self is frozen" do
a = "hello"
a.freeze
-> { a.send(@method, 0) }.should raise_error(frozen_error_class)
-> { a.send(@method, 33) }.should raise_error(frozen_error_class)
end
end
end
describe :string_concat_encoding, shared: true do
describe "when self is in an ASCII-incompatible encoding incompatible with the argument's encoding" do
it "uses self's encoding if both are empty" do
"".encode("UTF-16LE").send(@method, "").encoding.should == Encoding::UTF_16LE
end
it "uses self's encoding if the argument is empty" do
"x".encode("UTF-16LE").send(@method, "").encoding.should == Encoding::UTF_16LE
end
it "uses the argument's encoding if self is empty" do
"".encode("UTF-16LE").send(@method, "x".encode("UTF-8")).encoding.should == Encoding::UTF_8
end
it "raises Encoding::CompatibilityError if neither are empty" do
-> { "x".encode("UTF-16LE").send(@method, "y".encode("UTF-8")) }.should raise_error(Encoding::CompatibilityError)
end
end
describe "when the argument is in an ASCII-incompatible encoding incompatible with self's encoding" do
it "uses self's encoding if both are empty" do
"".encode("UTF-8").send(@method, "".encode("UTF-16LE")).encoding.should == Encoding::UTF_8
end
it "uses self's encoding if the argument is empty" do
"x".encode("UTF-8").send(@method, "".encode("UTF-16LE")).encoding.should == Encoding::UTF_8
end
it "uses the argument's encoding if self is empty" do
"".encode("UTF-8").send(@method, "x".encode("UTF-16LE")).encoding.should == Encoding::UTF_16LE
end
it "raises Encoding::CompatibilityError if neither are empty" do
-> { "x".encode("UTF-8").send(@method, "y".encode("UTF-16LE")) }.should raise_error(Encoding::CompatibilityError)
end
end
describe "when self and the argument are in different ASCII-compatible encodings" do
it "uses self's encoding if both are ASCII-only" do
"abc".encode("UTF-8").send(@method, "123".encode("SHIFT_JIS")).encoding.should == Encoding::UTF_8
end
it "uses self's encoding if the argument is ASCII-only" do
"\u00E9".encode("UTF-8").send(@method, "123".encode("ISO-8859-1")).encoding.should == Encoding::UTF_8
end
it "uses the argument's encoding if self is ASCII-only" do
"abc".encode("UTF-8").send(@method, "\u00E9".encode("ISO-8859-1")).encoding.should == Encoding::ISO_8859_1
end
it "raises Encoding::CompatibilityError if neither are ASCII-only" do
-> { "\u00E9".encode("UTF-8").send(@method, "\u00E9".encode("ISO-8859-1")) }.should raise_error(Encoding::CompatibilityError)
end
end
describe "when self is BINARY and argument is US-ASCII" do
it "uses BINARY encoding" do
"abc".encode("BINARY").send(@method, "123".encode("US-ASCII")).encoding.should == Encoding::BINARY
end
end
end
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