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# Keep encoding-related specs in a separate shared example to be able to skip them in IO/File/StringIO specs.
# It's difficult to check result's encoding in the test after writing to a file/io buffer.
describe :kernel_sprintf_encoding, shared: true do
it "can produce a string with valid encoding" do
string = @method.call("good day %{valid}", valid: "e")
string.encoding.should == Encoding::UTF_8
string.valid_encoding?.should be_true
end
it "can produce a string with invalid encoding" do
string = @method.call("good day %{invalid}", invalid: "\x80")
string.encoding.should == Encoding::UTF_8
string.valid_encoding?.should be_false
end
it "returns a String in the same encoding as the format String if compatible" do
string = "%s".force_encoding(Encoding::KOI8_U)
result = @method.call(string, "dogs")
result.encoding.should equal(Encoding::KOI8_U)
end
it "returns a String in the argument's encoding if format encoding is more restrictive" do
string = "foo %s".force_encoding(Encoding::US_ASCII)
argument = "b\303\274r".force_encoding(Encoding::UTF_8)
result = @method.call(string, argument)
result.encoding.should equal(Encoding::UTF_8)
end
it "raises Encoding::CompatibilityError if both encodings are ASCII compatible and there are not ASCII characters" do
string = "Ä %s".encode('windows-1252')
argument = "Ђ".encode('windows-1251')
-> {
@method.call(string, argument)
}.should raise_error(Encoding::CompatibilityError)
end
describe "%c" do
it "supports Unicode characters" do
result = @method.call("%c", 1286)
result.should == "Ԇ"
result.bytes.should == [212, 134]
result = @method.call("%c", "ش")
result.should == "ش"
result.bytes.should == [216, 180]
end
it "raises error when a codepoint isn't representable in an encoding of a format string" do
format = "%c".encode("ASCII")
-> {
@method.call(format, 1286)
}.should raise_error(RangeError, /out of char range/)
end
it "uses the encoding of the format string to interpret codepoints" do
format = "%c".force_encoding("euc-jp")
result = @method.call(format, 9415601)
result.encoding.should == Encoding::EUC_JP
result.should == "é".encode(Encoding::EUC_JP)
result.bytes.should == [143, 171, 177]
end
end
end
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