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258 lines
9.4 KiB
Ruby
258 lines
9.4 KiB
Ruby
require_relative '../../spec_helper'
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describe "Integer#chr without argument" do
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it "returns a String" do
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17.chr.should be_an_instance_of(String)
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end
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it "returns a new String for each call" do
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82.chr.should_not equal(82.chr)
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end
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it "raises a RangeError is self is less than 0" do
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-> { -1.chr }.should raise_error(RangeError)
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-> { (-bignum_value).chr }.should raise_error(RangeError)
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end
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it "raises a RangeError if self is too large" do
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-> { 2206368128.chr(Encoding::UTF_8) }.should raise_error(RangeError)
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end
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describe "when Encoding.default_internal is nil" do
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describe "and self is between 0 and 127 (inclusive)" do
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it "returns a US-ASCII String" do
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(0..127).each do |c|
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c.chr.encoding.should == Encoding::US_ASCII
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end
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end
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it "returns a String encoding self interpreted as a US-ASCII codepoint" do
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(0..127).each do |c|
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c.chr.bytes.to_a.should == [c]
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end
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end
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end
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describe "and self is between 128 and 255 (inclusive)" do
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it "returns a binary String" do
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(128..255).each do |c|
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c.chr.encoding.should == Encoding::BINARY
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end
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end
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it "returns a String containing self interpreted as a byte" do
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(128..255).each do |c|
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c.chr.bytes.to_a.should == [c]
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end
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end
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end
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it "raises a RangeError is self is greater than 255" do
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-> { 256.chr }.should raise_error(RangeError)
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-> { bignum_value.chr }.should raise_error(RangeError)
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end
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end
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describe "when Encoding.default_internal is not nil" do
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before do
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@default_internal = Encoding.default_internal
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end
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after do
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Encoding.default_internal = @default_internal
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end
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describe "and self is between 0 and 127 (inclusive)" do
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it "returns a US-ASCII String" do
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(0..127).each do |c|
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Encoding.default_internal = Encoding::UTF_8
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c.chr.encoding.should == Encoding::US_ASCII
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Encoding.default_internal = Encoding::SHIFT_JIS
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c.chr.encoding.should == Encoding::US_ASCII
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end
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end
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it "returns a String encoding self interpreted as a US-ASCII codepoint" do
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(0..127).each do |c|
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Encoding.default_internal = Encoding::UTF_8
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c.chr.bytes.to_a.should == [c]
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Encoding.default_internal = Encoding::SHIFT_JIS
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c.chr.bytes.to_a.should == [c]
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end
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end
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end
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describe "and self is between 128 and 255 (inclusive)" do
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it "returns a binary String" do
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(128..255).each do |c|
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Encoding.default_internal = Encoding::UTF_8
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c.chr.encoding.should == Encoding::BINARY
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Encoding.default_internal = Encoding::SHIFT_JIS
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c.chr.encoding.should == Encoding::BINARY
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end
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end
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it "returns a String containing self interpreted as a byte" do
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(128..255).each do |c|
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Encoding.default_internal = Encoding::UTF_8
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c.chr.bytes.to_a.should == [c]
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Encoding.default_internal = Encoding::SHIFT_JIS
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c.chr.bytes.to_a.should == [c]
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end
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end
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end
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describe "and self is greater than 255" do
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it "returns a String with the default internal encoding" do
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Encoding.default_internal = Encoding::UTF_8
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0x0100.chr.encoding.should == Encoding::UTF_8
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0x3000.chr.encoding.should == Encoding::UTF_8
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Encoding.default_internal = Encoding::SHIFT_JIS
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0x8140.chr.encoding.should == Encoding::SHIFT_JIS
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0xFC4B.chr.encoding.should == Encoding::SHIFT_JIS
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end
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it "returns a String encoding self interpreted as a codepoint in the default internal encoding" do
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Encoding.default_internal = Encoding::UTF_8
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0x0100.chr.bytes.to_a.should == [0xC4, 0x80]
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0x3000.chr.bytes.to_a.should == [0xE3, 0x80, 0x80]
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Encoding.default_internal = Encoding::SHIFT_JIS
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0x8140.chr.bytes.to_a.should == [0x81, 0x40] # Smallest assigned CP932 codepoint greater than 255
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0xFC4B.chr.bytes.to_a.should == [0xFC, 0x4B] # Largest assigned CP932 codepoint
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end
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# #5864
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it "raises RangeError if self is invalid as a codepoint in the default internal encoding" do
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[ [0x0100, "US-ASCII"],
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[0x0100, "BINARY"],
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[0x0100, "EUC-JP"],
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[0xA1A0, "EUC-JP"],
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[0x0100, "ISO-8859-9"],
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[620, "TIS-620"]
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].each do |integer, encoding_name|
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Encoding.default_internal = Encoding.find(encoding_name)
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-> { integer.chr }.should raise_error(RangeError)
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end
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end
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end
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end
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end
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describe "Integer#chr with an encoding argument" do
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it "returns a String" do
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900.chr(Encoding::UTF_8).should be_an_instance_of(String)
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end
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it "returns a new String for each call" do
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8287.chr(Encoding::UTF_8).should_not equal(8287.chr(Encoding::UTF_8))
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end
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it "accepts a String as an argument" do
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-> { 0xA4A2.chr('euc-jp') }.should_not raise_error
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end
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it "converts a String to an Encoding as Encoding.find does" do
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['utf-8', 'UTF-8', 'Utf-8'].each do |encoding|
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7894.chr(encoding).encoding.should == Encoding::UTF_8
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end
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end
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# http://redmine.ruby-lang.org/issues/4869
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it "raises a RangeError is self is less than 0" do
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-> { -1.chr(Encoding::UTF_8) }.should raise_error(RangeError)
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-> { (-bignum_value).chr(Encoding::EUC_JP) }.should raise_error(RangeError)
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end
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it "raises a RangeError if self is too large" do
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-> { 2206368128.chr(Encoding::UTF_8) }.should raise_error(RangeError)
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end
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it "returns a String with the specified encoding" do
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0x0000.chr(Encoding::US_ASCII).encoding.should == Encoding::US_ASCII
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0x007F.chr(Encoding::US_ASCII).encoding.should == Encoding::US_ASCII
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0x0000.chr(Encoding::BINARY).encoding.should == Encoding::BINARY
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0x007F.chr(Encoding::BINARY).encoding.should == Encoding::BINARY
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0x0080.chr(Encoding::BINARY).encoding.should == Encoding::BINARY
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0x00FF.chr(Encoding::BINARY).encoding.should == Encoding::BINARY
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0x0000.chr(Encoding::UTF_8).encoding.should == Encoding::UTF_8
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0x007F.chr(Encoding::UTF_8).encoding.should == Encoding::UTF_8
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0x0080.chr(Encoding::UTF_8).encoding.should == Encoding::UTF_8
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0x00FF.chr(Encoding::UTF_8).encoding.should == Encoding::UTF_8
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0x0100.chr(Encoding::UTF_8).encoding.should == Encoding::UTF_8
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0x3000.chr(Encoding::UTF_8).encoding.should == Encoding::UTF_8
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0x0000.chr(Encoding::SHIFT_JIS).encoding.should == Encoding::SHIFT_JIS
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0x007F.chr(Encoding::SHIFT_JIS).encoding.should == Encoding::SHIFT_JIS
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0x00A1.chr(Encoding::SHIFT_JIS).encoding.should == Encoding::SHIFT_JIS
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0x00DF.chr(Encoding::SHIFT_JIS).encoding.should == Encoding::SHIFT_JIS
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0x8140.chr(Encoding::SHIFT_JIS).encoding.should == Encoding::SHIFT_JIS
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0xFC4B.chr(Encoding::SHIFT_JIS).encoding.should == Encoding::SHIFT_JIS
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end
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it "returns a String encoding self interpreted as a codepoint in the specified encoding" do
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0x0000.chr(Encoding::US_ASCII).bytes.to_a.should == [0x00]
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0x007F.chr(Encoding::US_ASCII).bytes.to_a.should == [0x7F]
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0x0000.chr(Encoding::BINARY).bytes.to_a.should == [0x00]
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0x007F.chr(Encoding::BINARY).bytes.to_a.should == [0x7F]
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0x0080.chr(Encoding::BINARY).bytes.to_a.should == [0x80]
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0x00FF.chr(Encoding::BINARY).bytes.to_a.should == [0xFF]
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0x0000.chr(Encoding::UTF_8).bytes.to_a.should == [0x00]
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0x007F.chr(Encoding::UTF_8).bytes.to_a.should == [0x7F]
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0x0080.chr(Encoding::UTF_8).bytes.to_a.should == [0xC2, 0x80]
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0x00FF.chr(Encoding::UTF_8).bytes.to_a.should == [0xC3, 0xBF]
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0x0100.chr(Encoding::UTF_8).bytes.to_a.should == [0xC4, 0x80]
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0x3000.chr(Encoding::UTF_8).bytes.to_a.should == [0xE3, 0x80, 0x80]
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0x0000.chr(Encoding::SHIFT_JIS).bytes.to_a.should == [0x00]
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0x007F.chr(Encoding::SHIFT_JIS).bytes.to_a.should == [0x7F]
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0x00A1.chr(Encoding::SHIFT_JIS).bytes.to_a.should == [0xA1]
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0x00DF.chr(Encoding::SHIFT_JIS).bytes.to_a.should == [0xDF]
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0x8140.chr(Encoding::SHIFT_JIS).bytes.to_a.should == [0x81, 0x40] # Smallest assigned CP932 codepoint greater than 255
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0xFC4B.chr(Encoding::SHIFT_JIS).bytes.to_a.should == [0xFC, 0x4B] # Largest assigned CP932 codepoint
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end
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# #5864
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it "raises RangeError if self is invalid as a codepoint in the specified encoding" do
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[ [0x80, "US-ASCII"],
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[0x0100, "BINARY"],
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[0x0100, "EUC-JP"],
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[0xA1A0, "EUC-JP"],
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[0xA1, "EUC-JP"],
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[0x80, "SHIFT_JIS"],
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[0xE0, "SHIFT_JIS"],
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[0x0100, "ISO-8859-9"],
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[620, "TIS-620"],
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[0xD800, "UTF-8"],
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[0xDBFF, "UTF-8"],
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[0xDC00, "UTF-8"],
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[0xDFFF, "UTF-8"],
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[0xD800, "UTF-16"],
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[0xDBFF, "UTF-16"],
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[0xDC00, "UTF-16"],
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[0xDFFF, "UTF-16"],
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].each do |integer, encoding_name|
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-> { integer.chr(encoding_name) }.should raise_error(RangeError)
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end
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end
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it 'returns a String encoding self interpreted as a codepoint in the CESU-8 encoding' do
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# see more details here https://en.wikipedia.org/wiki/CESU-8
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# code points from U+0000 to U+FFFF is encoded in the same way as in UTF-8
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0x0045.chr(Encoding::CESU_8).bytes.should == 0x0045.chr(Encoding::UTF_8).bytes
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# code points in range from U+10000 to U+10FFFF is CESU-8 data containing a 6-byte surrogate pair,
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# which decodes to a 4-byte UTF-8 string
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0x10400.chr(Encoding::CESU_8).bytes.should != 0x10400.chr(Encoding::UTF_8).bytes
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0x10400.chr(Encoding::CESU_8).bytes.to_a.should == [0xED, 0xA0, 0x81, 0xED, 0xB0, 0x80]
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end
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end
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