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ruby--ruby/spec/ruby/optional/capi/encoding_spec.rb
2020-07-27 21:41:08 +02:00

651 lines
21 KiB
Ruby

# -*- encoding: utf-8 -*-
require_relative 'spec_helper'
require_relative 'fixtures/encoding'
load_extension('encoding')
describe :rb_enc_get_index, shared: true do
it "returns the index of the encoding of a String" do
@s.send(@method, "string").should >= 0
end
it "returns the index of the encoding of a Regexp" do
@s.send(@method, /regexp/).should >= 0
end
end
describe :rb_enc_set_index, shared: true do
it "sets the object's encoding to the Encoding specified by the index" do
obj = "abc"
result = @s.send(@method, obj, 2)
# This is used because indexes should be considered implementation
# dependent. So a pair is returned:
# [rb_enc_find_index() -> name, rb_enc_get(obj) -> name]
result.first.should == result.last
end
it "associates an encoding with a subclass of String" do
str = CApiEncodingSpecs::S.new "abc"
result = @s.send(@method, str, 1)
result.first.should == result.last
end
ruby_version_is "2.6" do
it "raises an ArgumentError for a non-encoding capable object" do
obj = Object.new
-> {
result = @s.send(@method, obj, 1)
}.should raise_error(ArgumentError, "cannot set encoding on non-encoding capable object")
end
end
end
describe "C-API Encoding function" do
@n = 0
before :each do
@s = CApiEncodingSpecs.new
end
ruby_version_is "2.6" do
describe "rb_enc_alias" do
it "creates an alias for an existing Encoding" do
name = "ZOMGWTFBBQ#{@n += 1}"
@s.rb_enc_alias(name, "UTF-8").should >= 0
Encoding.find(name).name.should == "UTF-8"
end
end
end
describe "rb_enc_codelen" do
it "returns the correct length for the given codepoint" do
@s.rb_enc_codelen(0x24, Encoding::UTF_8).should == 1
@s.rb_enc_codelen(0xA2, Encoding::UTF_8).should == 2
@s.rb_enc_codelen(0x20AC, Encoding::UTF_8).should == 3
@s.rb_enc_codelen(0x24B62, Encoding::UTF_8).should == 4
end
end
describe "rb_enc_find" do
it "returns the encoding of an Encoding" do
@s.rb_enc_find("UTF-8").should == "UTF-8"
end
it "returns the encoding of an Encoding specified with lower case" do
@s.rb_enc_find("utf-8").should == "UTF-8"
end
end
describe "rb_enc_find_index" do
it "returns the index of an Encoding" do
@s.rb_enc_find_index("UTF-8").should >= 0
end
it "returns the index of an Encoding specified with lower case" do
@s.rb_enc_find_index("utf-8").should >= 0
end
it "returns -1 for an non existing encoding" do
@s.rb_enc_find_index("non-existent-encoding").should == -1
end
end
describe "rb_enc_isalnum" do
it "returns non-zero for alpha-numeric characters" do
@s.rb_enc_isalnum("a".ord, Encoding::US_ASCII).should == true
@s.rb_enc_isalnum("2".ord, Encoding::US_ASCII).should == true
@s.rb_enc_isalnum("a".ord, Encoding::UTF_8).should == true
@s.rb_enc_isalnum("2".ord, Encoding::UTF_8).should == true
@s.rb_enc_isalnum("é".encode(Encoding::ISO_8859_1).ord, Encoding::ISO_8859_1).should == true
end
it "returns zero for non alpha-numeric characters" do
@s.rb_enc_isalnum("-".ord, Encoding::US_ASCII).should == false
@s.rb_enc_isalnum(" ".ord, Encoding::US_ASCII).should == false
@s.rb_enc_isalnum("-".ord, Encoding::UTF_8).should == false
@s.rb_enc_isalnum(" ".ord, Encoding::UTF_8).should == false
end
end
describe "rb_enc_isspace" do
it "returns non-zero for space characters" do
@s.rb_enc_isspace(" ".ord, Encoding::US_ASCII).should == true
@s.rb_enc_isspace(" ".ord, Encoding::UTF_8).should == true
end
it "returns zero for non space characters" do
@s.rb_enc_isspace("-".ord, Encoding::US_ASCII).should == false
@s.rb_enc_isspace("A".ord, Encoding::US_ASCII).should == false
@s.rb_enc_isspace("3".ord, Encoding::US_ASCII).should == false
@s.rb_enc_isspace("-".ord, Encoding::UTF_8).should == false
@s.rb_enc_isspace("A".ord, Encoding::UTF_8).should == false
@s.rb_enc_isspace("3".ord, Encoding::UTF_8).should == false
end
end
describe "rb_enc_from_index" do
it "returns an Encoding" do
@s.rb_enc_from_index(0).should be_an_instance_of(String)
end
end
describe "rb_enc_mbc_to_codepoint" do
it "returns the correct codepoint for the given character and size" do
@s.rb_enc_mbc_to_codepoint("é", 2).should == 0x00E9
@s.rb_enc_mbc_to_codepoint("éa", 2).should == 0x00E9
@s.rb_enc_mbc_to_codepoint("éa", 1).should == 0xC3
@s.rb_enc_mbc_to_codepoint("éa", 3).should == 0x00E9
end
end
describe "rb_enc_mbcput" do
it "writes the correct bytes to the buffer" do
@s.rb_enc_mbcput(0x24, Encoding::UTF_8).should == "$"
@s.rb_enc_mbcput(0xA2, Encoding::UTF_8).should == "¢"
@s.rb_enc_mbcput(0x20AC, Encoding::UTF_8).should == ""
@s.rb_enc_mbcput(0x24B62, Encoding::UTF_8).should == "𤭢"
@s.rb_enc_mbcput(0x24, Encoding::UTF_16BE).bytes.should == [0, 0x24]
@s.rb_enc_mbcput(0x24B62, Encoding::UTF_16LE).bytes.should == [82, 216, 98, 223]
end
end
describe "rb_usascii_encoding" do
it "returns the encoding for Encoding::US_ASCII" do
@s.rb_usascii_encoding.should == "US-ASCII"
end
end
describe "rb_ascii8bit_encoding" do
it "returns the encoding for Encoding::BINARY" do
@s.rb_ascii8bit_encoding.should == "ASCII-8BIT"
end
end
describe "rb_utf8_encoding" do
it "returns the encoding for Encoding::UTF_8" do
@s.rb_utf8_encoding.should == "UTF-8"
end
end
describe "rb_enc_from_encoding" do
it "returns an Encoding instance from an encoding data structure" do
@s.rb_enc_from_encoding("UTF-8").should == Encoding::UTF_8
end
end
describe "rb_locale_encoding" do
it "returns the encoding for the current locale" do
@s.rb_locale_encoding.should == Encoding.find('locale').name
end
end
describe "rb_filesystem_encoding" do
it "returns the encoding for the current filesystem" do
@s.rb_filesystem_encoding.should == Encoding.find('filesystem').name
end
end
describe "rb_enc_get" do
it "returns the encoding associated with an object" do
str = "abc".encode Encoding::BINARY
@s.rb_enc_get(str).should == "ASCII-8BIT"
end
end
describe "rb_enc_precise_mbclen" do
it "returns the correct length for single byte characters" do
@s.rb_enc_precise_mbclen("hello", 7).should == 1
@s.rb_enc_precise_mbclen("hello", 5).should == 1
@s.rb_enc_precise_mbclen("hello", 1).should == 1
@s.rb_enc_precise_mbclen("hello", 0).should == -2
@s.rb_enc_precise_mbclen("hello", -1).should == -2
@s.rb_enc_precise_mbclen("hello", -5).should == -2
end
it "returns the correct length for multi-byte characters" do
@s.rb_enc_precise_mbclen("ésumé", 2).should == 2
@s.rb_enc_precise_mbclen("ésumé", 3).should == 2
@s.rb_enc_precise_mbclen("ésumé", 0).should == -2
@s.rb_enc_precise_mbclen("ésumé", 1).should == -2
@s.rb_enc_precise_mbclen("", 20).should == 3
@s.rb_enc_precise_mbclen("", 3).should == 3
@s.rb_enc_precise_mbclen("", 2).should == -2
@s.rb_enc_precise_mbclen("", 0).should == -2
@s.rb_enc_precise_mbclen("", -2).should == -2
end
end
describe "rb_obj_encoding" do
it "returns the encoding associated with an object" do
str = "abc".encode Encoding::BINARY
@s.rb_obj_encoding(str).should == Encoding::BINARY
end
end
describe "rb_enc_get_index" do
it_behaves_like :rb_enc_get_index, :rb_enc_get_index
it "returns the index of the encoding of a Symbol" do
@s.rb_enc_get_index(:symbol).should >= 0
end
it "returns -1 as the index of nil" do
@s.rb_enc_get_index(nil).should == -1
end
it "returns -1 as the index for immediates" do
@s.rb_enc_get_index(1).should == -1
end
ruby_version_is "2.6" do
it "returns -1 for an object without an encoding" do
obj = Object.new
@s.rb_enc_get_index(obj).should == -1
end
end
end
describe "rb_enc_set_index" do
it_behaves_like :rb_enc_set_index, :rb_enc_set_index
end
describe "rb_enc_str_new" do
it "returns a String in US-ASCII encoding when high bits are set" do
xEE = [0xEE].pack('C').force_encoding('utf-8')
result = @s.rb_enc_str_new(xEE, 1, Encoding::US_ASCII)
result.encoding.should equal(Encoding::US_ASCII)
end
end
describe "rb_enc_str_new_cstr" do
it "creates a new ruby string from a c string literal" do
result = @s.rb_enc_str_new_cstr_constant(Encoding::US_ASCII)
result.should == "test string literal"
result.encoding.should == Encoding::US_ASCII
end
it "creates a new ruby string from a c string variable" do
result = @s.rb_enc_str_new_cstr("test string", Encoding::US_ASCII)
result.should == "test string"
result.encoding.should == Encoding::US_ASCII
end
it "when null encoding is given with a c string literal, it creates a new ruby string with ASCII_8BIT encoding" do
result = @s.rb_enc_str_new_cstr_constant(nil)
result.should == "test string literal"
result.encoding.should == Encoding::ASCII_8BIT
end
end
describe "rb_enc_str_coderange" do
describe "when the encoding is BINARY" do
it "returns ENC_CODERANGE_7BIT if there are no high bits set" do
result = @s.rb_enc_str_coderange("abc".force_encoding("binary"))
result.should == :coderange_7bit
end
it "returns ENC_CODERANGE_VALID if there are high bits set" do
xEE = [0xEE].pack('C').force_encoding('utf-8')
result = @s.rb_enc_str_coderange(xEE.force_encoding("binary"))
result.should == :coderange_valid
end
end
describe "when the encoding is UTF-8" do
it "returns ENC_CODERANGE_7BIT if there are no high bits set" do
result = @s.rb_enc_str_coderange("abc".force_encoding("utf-8"))
result.should == :coderange_7bit
end
it "returns ENC_CODERANGE_VALID if there are high bits set in a valid string" do
result = @s.rb_enc_str_coderange("\xE3\x81\x82".force_encoding("utf-8"))
result.should == :coderange_valid
end
it "returns ENC_CODERANGE_BROKEN if there are high bits set in an invalid string" do
result = @s.rb_enc_str_coderange([0xEE].pack('C').force_encoding("utf-8"))
result.should == :coderange_broken
end
end
describe "when the encoding is US-ASCII" do
it "returns ENC_CODERANGE_7BIT if there are no high bits set" do
result = @s.rb_enc_str_coderange("abc".force_encoding("us-ascii"))
result.should == :coderange_7bit
end
it "returns ENC_CODERANGE_BROKEN if there are high bits set" do
result = @s.rb_enc_str_coderange([0xEE].pack('C').force_encoding("us-ascii"))
result.should == :coderange_broken
end
end
end
describe "MBCLEN_CHARFOUND_P" do
it "returns non-zero for valid character" do
@s.MBCLEN_CHARFOUND_P("a".ord).should == 1
end
it "returns zero for invalid characters" do
@s.MBCLEN_CHARFOUND_P(0).should == 0
@s.MBCLEN_CHARFOUND_P(-1).should == 0
end
end
describe "ENCODING_GET" do
it_behaves_like :rb_enc_get_index, :ENCODING_GET
end
describe "ENCODING_SET" do
it_behaves_like :rb_enc_set_index, :ENCODING_SET
end
describe "ENC_CODERANGE_ASCIIONLY" do
it "returns true if the object encoding is only ASCII" do
str = "abc".force_encoding("us-ascii")
str.valid_encoding? # make sure to set the coderange
@s.ENC_CODERANGE_ASCIIONLY(str).should be_true
end
it "returns false if the object encoding is not ASCII only" do
str = "ありがとう".force_encoding("utf-8")
@s.ENC_CODERANGE_ASCIIONLY(str).should be_false
end
end
describe "rb_to_encoding" do
it "returns the encoding for the Encoding instance passed" do
@s.rb_to_encoding(Encoding::BINARY).should == "ASCII-8BIT"
end
it "returns the correct encoding for a replicated encoding" do
@s.rb_to_encoding(Encoding::IBM857).should == "IBM857"
end
it "returns the encoding when passed a String" do
@s.rb_to_encoding("ASCII").should == "US-ASCII"
end
it "calls #to_str to convert the argument to a String" do
obj = mock("rb_to_encoding Encoding name")
obj.should_receive(:to_str).and_return("utf-8")
@s.rb_to_encoding(obj).should == "UTF-8"
end
describe "when the rb_encoding struct is stored in native memory" do
it "can still read the name of the encoding" do
address = @s.rb_to_encoding_native_store(Encoding::UTF_8)
address.should be_kind_of(Integer)
@s.rb_to_encoding_native_name(address).should == "UTF-8"
end
end
end
describe "rb_to_encoding_index" do
it "returns the index of the encoding for the Encoding instance passed" do
@s.rb_to_encoding_index(Encoding::BINARY).should >= 0
end
it "returns the index of the encoding when passed a String" do
@s.rb_to_encoding_index("ASCII").should >= 0
end
it "returns the index of the dummy encoding of an Object" do
index = Encoding.list.index(Encoding::UTF_16)
@s.rb_to_encoding_index(Encoding::UTF_16.name).should == index
end
it "calls #to_str to convert the argument to a String" do
obj = mock("rb_to_encoding Encoding name")
obj.should_receive(:to_str).and_return("utf-8")
@s.rb_to_encoding_index(obj).should >= 0
end
end
describe "rb_enc_compatible" do
it "returns 0 if the encodings of the Strings are not compatible" do
a = [0xff].pack('C').force_encoding "binary"
b = "\u3042".encode("utf-8")
@s.rb_enc_compatible(a, b).should == 0
end
# The coverage of this sucks, but there is not a simple way (yet?) to
# easily share the specs between rb_enc_compatible and
# Encoding.compatible?
it "returns the same value as Encoding.compatible? if the Strings have a compatible encoding" do
a = "abc".force_encoding("us-ascii")
b = "\u3042".encode("utf-8")
@s.rb_enc_compatible(a, b).should == Encoding.compatible?(a, b)
end
end
describe "rb_enc_copy" do
before :each do
@obj = "rb_enc_copy".encode(Encoding::US_ASCII)
end
it "sets the encoding of a String to that of the second argument" do
@s.rb_enc_copy("string", @obj).encoding.should == Encoding::US_ASCII
end
it "raises a RuntimeError if the second argument is a Symbol" do
-> { @s.rb_enc_copy(:symbol, @obj) }.should raise_error(RuntimeError)
end
it "sets the encoding of a Regexp to that of the second argument" do
@s.rb_enc_copy(/regexp/.dup, @obj).encoding.should == Encoding::US_ASCII
end
end
describe "rb_default_internal_encoding" do
before :each do
@default = Encoding.default_internal
end
after :each do
Encoding.default_internal = @default
end
it "returns 0 if Encoding.default_internal is nil" do
Encoding.default_internal = nil
@s.rb_default_internal_encoding.should be_nil
end
it "returns the encoding for Encoding.default_internal" do
Encoding.default_internal = "US-ASCII"
@s.rb_default_internal_encoding.should == "US-ASCII"
Encoding.default_internal = "UTF-8"
@s.rb_default_internal_encoding.should == "UTF-8"
end
end
describe "rb_default_external_encoding" do
before :each do
@default = Encoding.default_external
end
after :each do
Encoding.default_external = @default
end
it "returns the encoding for Encoding.default_external" do
Encoding.default_external = "ASCII-8BIT"
@s.rb_default_external_encoding.should == "ASCII-8BIT"
end
end
describe "rb_enc_associate" do
it "sets the encoding of a String to the encoding" do
@s.rb_enc_associate("string", "BINARY").encoding.should == Encoding::BINARY
end
it "raises a RuntimeError if the argument is Symbol" do
-> { @s.rb_enc_associate(:symbol, "US-ASCII") }.should raise_error(RuntimeError)
end
it "sets the encoding of a Regexp to the encoding" do
@s.rb_enc_associate(/regexp/.dup, "BINARY").encoding.should == Encoding::BINARY
end
it "sets the encoding of a String to a default when the encoding is NULL" do
@s.rb_enc_associate("string", nil).encoding.should == Encoding::BINARY
end
end
describe "rb_enc_associate_index" do
it "sets the encoding of a String to the encoding" do
index = @s.rb_enc_find_index("BINARY")
enc = @s.rb_enc_associate_index("string", index).encoding
enc.should == Encoding::BINARY
end
it "sets the encoding of a Regexp to the encoding" do
index = @s.rb_enc_find_index("UTF-8")
enc = @s.rb_enc_associate_index(/regexp/.dup, index).encoding
enc.should == Encoding::UTF_8
end
it "sets the encoding of a Symbol to the encoding" do
index = @s.rb_enc_find_index("UTF-8")
-> { @s.rb_enc_associate_index(:symbol, index) }.should raise_error(RuntimeError)
end
end
describe "rb_ascii8bit_encindex" do
it "returns an index for the ASCII-8BIT encoding" do
@s.rb_ascii8bit_encindex().should >= 0
end
end
describe "rb_utf8_encindex" do
it "returns an index for the UTF-8 encoding" do
@s.rb_utf8_encindex().should >= 0
end
end
describe "rb_usascii_encindex" do
it "returns an index for the US-ASCII encoding" do
@s.rb_usascii_encindex().should >= 0
end
end
describe "rb_locale_encindex" do
it "returns an index for the locale encoding" do
@s.rb_locale_encindex().should >= 0
end
end
describe "rb_filesystem_encindex" do
it "returns an index for the filesystem encoding" do
@s.rb_filesystem_encindex().should >= 0
end
end
describe "rb_enc_to_index" do
it "returns an index for the encoding" do
@s.rb_enc_to_index("UTF-8").should >= 0
end
it "returns a non-negative int if the encoding is not defined" do
# Encoding indexes are an implementation detail and not guaranteed
# across implementations.
@s.rb_enc_to_index("FTU-81").should >= 0
end
end
describe "rb_enc_nth" do
it "returns the byte index of the given character index" do
@s.rb_enc_nth("hüllo", 3).should == 4
end
end
describe "rb_enc_codepoint_len" do
it "raises ArgumentError if an empty string is given" do
-> do
@s.rb_enc_codepoint_len("")
end.should raise_error(ArgumentError)
end
it "raises ArgumentError if an invalid byte sequence is given" do
-> do
@s.rb_enc_codepoint_len([0xa0, 0xa1].pack('CC').force_encoding('utf-8')) # Invalid sequence identifier
end.should raise_error(ArgumentError)
end
it "returns codepoint 0x24 and length 1 for character '$'" do
codepoint, length = @s.rb_enc_codepoint_len("$")
codepoint.should == 0x24
length.should == 1
end
it "returns codepoint 0xA2 and length 2 for character '¢'" do
codepoint, length = @s.rb_enc_codepoint_len("¢")
codepoint.should == 0xA2
length.should == 2
end
it "returns codepoint 0x20AC and length 3 for character '€'" do
codepoint, length = @s.rb_enc_codepoint_len("")
codepoint.should == 0x20AC
length.should == 3
end
it "returns codepoint 0x24B62 and length 4 for character '𤭢'" do
codepoint, length = @s.rb_enc_codepoint_len("𤭢")
codepoint.should == 0x24B62
length.should == 4
end
end
describe "rb_enc_str_asciionly_p" do
it "returns true for an ASCII string" do
@s.rb_enc_str_asciionly_p("hello").should be_true
end
it "returns false for a non-ASCII string" do
@s.rb_enc_str_asciionly_p("hüllo").should be_false
end
end
describe "rb_uv_to_utf8" do
it 'converts a Unicode codepoint to a UTF-8 C string' do
str = ' ' * 6
{
0 => "\x01",
0x7f => "\xC2\x80",
0x7ff => "\xE0\xA0\x80",
0xffff => "\xF0\x90\x80\x80",
0x1fffff => "\xF8\x88\x80\x80\x80",
0x3ffffff => "\xFC\x84\x80\x80\x80\x80",
}.each do |num, result|
len = @s.rb_uv_to_utf8(str, num + 1)
str[0..len-1].should == result
end
end
end
describe "ONIGENC_MBC_CASE_FOLD" do
it "returns the correct case fold for the given string" do
@s.ONIGENC_MBC_CASE_FOLD("lower").should == ["l", 1]
@s.ONIGENC_MBC_CASE_FOLD("Upper").should == ["u", 1]
end
it "works with other encodings" do
@s.ONIGENC_MBC_CASE_FOLD("lower".force_encoding("binary")).should == ["l", 1]
@s.ONIGENC_MBC_CASE_FOLD("Upper".force_encoding("binary")).should == ["u", 1]
@s.ONIGENC_MBC_CASE_FOLD("É").should == ["é", 2]
str, length = @s.ONIGENC_MBC_CASE_FOLD('$'.encode(Encoding::UTF_16BE))
length.should == 2
str.bytes.should == [0, 0x24]
end
end
end