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Diffstat (limited to 'spec/ruby/core/string/shared/concat.rb')
| -rw-r--r-- | spec/ruby/core/string/shared/concat.rb | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/spec/ruby/core/string/shared/concat.rb b/spec/ruby/core/string/shared/concat.rb new file mode 100644 index 0000000000..dded9a69e7 --- /dev/null +++ b/spec/ruby/core/string/shared/concat.rb @@ -0,0 +1,159 @@ +# frozen_string_literal: false +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 "raises a FrozenError when self is frozen" do + a = "hello" + a.freeze + + -> { a.send(@method, "") }.should raise_error(FrozenError) + -> { a.send(@method, "test") }.should raise_error(FrozenError) + 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 + + 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 FrozenError when self is frozen" do + a = "hello" + a.freeze + + -> { a.send(@method, 0) }.should raise_error(FrozenError) + -> { a.send(@method, 33) }.should raise_error(FrozenError) + 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 + +describe :string_concat_type_coercion, shared: true do + 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 NoMethodError if the given argument raises a NoMethodError during type coercion to a String" do + obj = mock('world!') + obj.should_receive(:to_str).and_raise(NoMethodError) + -> { 'hello '.send(@method, obj) }.should raise_error(NoMethodError) + end +end |