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Diffstat (limited to 'spec/ruby/optional/capi/encoding_spec.rb')
| -rw-r--r-- | spec/ruby/optional/capi/encoding_spec.rb | 748 |
1 files changed, 748 insertions, 0 deletions
diff --git a/spec/ruby/optional/capi/encoding_spec.rb b/spec/ruby/optional/capi/encoding_spec.rb new file mode 100644 index 0000000000..c14983c7ea --- /dev/null +++ b/spec/ruby/optional/capi/encoding_spec.rb @@ -0,0 +1,748 @@ +# -*- encoding: utf-8 -*- +# frozen_string_literal: false +require_relative 'spec_helper' +require_relative 'fixtures/encoding' + +extension_path = 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 + + 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 + +describe "C-API Encoding function" do + @n = 0 + + before :each do + @s = CApiEncodingSpecs.new + end + + 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 + + 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_strlen" do + before :each do + @str = 'こにちわ' # Each codepoint in this string is 3 bytes in UTF-8 + end + + it "returns the correct string length for the encoding" do + @s.rb_enc_strlen(@str, @str.bytesize, Encoding::UTF_8).should == 4 + @s.rb_enc_strlen(@str, @str.bytesize, Encoding::BINARY).should == 12 + end + + it "returns the string length based on a fixed-width encoding's character length, even if the encoding is incompatible" do + @s.rb_enc_strlen(@str, @str.bytesize, Encoding::UTF_16BE).should == 6 + @s.rb_enc_strlen(@str, @str.bytesize, Encoding::UTF_16LE).should == 6 + @s.rb_enc_strlen(@str, @str.bytesize, Encoding::UTF_32BE).should == 3 + @s.rb_enc_strlen(@str, @str.bytesize, Encoding::UTF_32LE).should == 3 + end + + it "does not consider strings to be NUL-terminated" do + s = "abc\0def" + @s.rb_enc_strlen(s, s.bytesize, Encoding::US_ASCII).should == 7 + @s.rb_enc_strlen(s, s.bytesize, Encoding::UTF_8).should == 7 + end + + describe "handles broken strings" do + it "combines valid character and invalid character counts in UTF-8" do + # The result is 3 because `rb_enc_strlen` counts the first valid character and then adds + # the byte count for the invalid character that follows for 1 + 2. + @s.rb_enc_strlen(@str, 5, Encoding::UTF_8).should == 3 + end + + it "combines valid character and invalid character counts in UTF-16" do + @s.rb_enc_strlen(@str, 5, Encoding::UTF_16BE).should == 3 + end + + it "rounds up for fixed-width encodings" do + @s.rb_enc_strlen(@str, 7, Encoding::UTF_32BE).should == 2 + @s.rb_enc_strlen(@str, 7, Encoding::UTF_32LE).should == 2 + @s.rb_enc_strlen(@str, 5, Encoding::BINARY).should == 5 + end + 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").should == 0xE9 + end + + it "returns 0 if p == e" do + @s.rb_enc_mbc_to_codepoint("").should == 0 + end + + it "returns the raw byte if incomplete character in UTF-8" do + @s.rb_enc_mbc_to_codepoint("\xC3").should == 0xC3 + @s.rb_enc_mbc_to_codepoint("\x80").should == 0x80 + 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("あ", 20).should == 3 + @s.rb_enc_precise_mbclen("あ", 3).should == 3 + @s.rb_enc_precise_mbclen("あ", 2).should == -2 + @s.rb_enc_precise_mbclen("あ", 0).should == -2 + @s.rb_enc_precise_mbclen("あ", -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 + + it "returns -1 for an object without an encoding" do + obj = Object.new + @s.rb_enc_get_index(obj).should == -1 + 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 == 1 + end + end + + describe "rb_usascii_encindex" do + it "returns an index for the US-ASCII encoding" do + @s.rb_usascii_encindex().should == 2 + 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_enc_raise" do + it "forces exception message encoding to the specified one" do + utf_8_incompatible_string = "\x81".b + + -> { + @s.rb_enc_raise(Encoding::UTF_8, RuntimeError, utf_8_incompatible_string) + }.should raise_error { |e| + e.message.encoding.should == Encoding::UTF_8 + e.message.valid_encoding?.should == false + e.message.bytes.should == utf_8_incompatible_string.bytes + } + end + end + + describe "rb_uv_to_utf8" do + it 'converts a Unicode codepoint to a UTF-8 C string' do + str = ' ' * 6 + { + 1 => "\x01", + 0x80 => "\xC2\x80", + 0x800 => "\xE0\xA0\x80", + 0x10000 => "\xF0\x90\x80\x80", + 0x200000 => "\xF8\x88\x80\x80\x80", + 0x4000000 => "\xFC\x84\x80\x80\x80\x80", + }.each do |num, result| + len = @s.rb_uv_to_utf8(str, num) + str.byteslice(0, len).should == result + end + end + end + + describe "rb_enc_left_char_head" do + it 'returns the head position of a character' do + @s.rb_enc_left_char_head("é", 1).should == 0 + @s.rb_enc_left_char_head("éééé", 7).should == 6 + + @s.rb_enc_left_char_head("a", 0).should == 0 + + # unclear if this is intended to work + @s.rb_enc_left_char_head("a", 1).should == 1 + + # Works because for single-byte encodings rb_enc_left_char_head() just returns the pointer + @s.rb_enc_left_char_head("a".force_encoding(Encoding::US_ASCII), 88).should == 88 + @s.rb_enc_left_char_head("a".b, 88).should == 88 + 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] + @s.ONIGENC_MBC_CASE_FOLD("ABC"[1..-1]).should == ["b", 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 + + describe "rb_define_dummy_encoding" do + run = 0 + + it "defines the dummy encoding" do + @s.rb_define_dummy_encoding("FOO#{run += 1}") + enc = Encoding.find("FOO#{run}") + enc.should.dummy? + end + + it "returns the index of the dummy encoding" do + index = @s.rb_define_dummy_encoding("BAR#{run += 1}") + index.should == Encoding.list.size - 1 + end + + it "raises EncodingError if too many encodings" do + code = <<-RUBY + require #{extension_path.dump} + 1_000.times {|i| CApiEncodingSpecs.new.rb_define_dummy_encoding("R_\#{i}") } + RUBY + ruby_exe(code, args: "2>&1", exit_status: 1).should.include?('too many encoding (> 256) (EncodingError)') + end + end +end |