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require File.expand_path('../../../spec_helper', __FILE__)
describe "Integer#chr without argument" do
it "returns a String" do
17.chr.should be_an_instance_of(String)
end
it "returns a new String for each call" do
82.chr.should_not equal(82.chr)
end
it "raises a RangeError is self is less than 0" do
lambda { -1.chr }.should raise_error(RangeError)
lambda { -bignum_value.chr }.should raise_error(RangeError)
end
describe "when Encoding.default_internal is nil" do
describe "and self is between 0 and 127 (inclusive)" do
it "returns a US-ASCII String" do
(0..127).each do |c|
c.chr.encoding.should == Encoding::US_ASCII
end
end
it "returns a String encoding self interpreted as a US-ASCII codepoint" do
(0..127).each do |c|
c.chr.bytes.to_a.should == [c]
end
end
end
describe "and self is between 128 and 255 (inclusive)" do
it "returns an ASCII-8BIT String" do
(128..255).each do |c|
c.chr.encoding.should == Encoding::ASCII_8BIT
end
end
it "returns a String containing self interpreted as a byte" do
(128..255).each do |c|
c.chr.bytes.to_a.should == [c]
end
end
end
it "raises a RangeError is self is greater than 255" do
lambda { 256.chr }.should raise_error(RangeError)
lambda { bignum_value.chr }.should raise_error(RangeError)
end
end
describe "when Encoding.default_internal is not nil" do
before do
@default_internal = Encoding.default_internal
end
after do
Encoding.default_internal = @default_internal
end
describe "and self is between 0 and 127 (inclusive)" do
it "returns a US-ASCII String" do
(0..127).each do |c|
Encoding.default_internal = Encoding::UTF_8
c.chr.encoding.should == Encoding::US_ASCII
Encoding.default_internal = Encoding::SHIFT_JIS
c.chr.encoding.should == Encoding::US_ASCII
end
end
it "returns a String encoding self interpreted as a US-ASCII codepoint" do
(0..127).each do |c|
Encoding.default_internal = Encoding::UTF_8
c.chr.bytes.to_a.should == [c]
Encoding.default_internal = Encoding::SHIFT_JIS
c.chr.bytes.to_a.should == [c]
end
end
end
describe "and self is between 128 and 255 (inclusive)" do
it "returns an ASCII-8BIT String" do
(128..255).each do |c|
Encoding.default_internal = Encoding::UTF_8
c.chr.encoding.should == Encoding::ASCII_8BIT
Encoding.default_internal = Encoding::SHIFT_JIS
c.chr.encoding.should == Encoding::ASCII_8BIT
end
end
it "returns a String containing self interpreted as a byte" do
(128..255).each do |c|
Encoding.default_internal = Encoding::UTF_8
c.chr.bytes.to_a.should == [c]
Encoding.default_internal = Encoding::SHIFT_JIS
c.chr.bytes.to_a.should == [c]
end
end
end
describe "and self is greater than 255" do
it "returns a String with the default internal encoding" do
Encoding.default_internal = Encoding::UTF_8
0x0100.chr.encoding.should == Encoding::UTF_8
0x3000.chr.encoding.should == Encoding::UTF_8
Encoding.default_internal = Encoding::SHIFT_JIS
0x8140.chr.encoding.should == Encoding::SHIFT_JIS
0xFC4B.chr.encoding.should == Encoding::SHIFT_JIS
end
it "returns a String encoding self interpreted as a codepoint in the default internal encoding" do
Encoding.default_internal = Encoding::UTF_8
0x0100.chr.bytes.to_a.should == [0xC4, 0x80]
0x3000.chr.bytes.to_a.should == [0xE3, 0x80, 0x80]
Encoding.default_internal = Encoding::SHIFT_JIS
0x8140.chr.bytes.to_a.should == [0x81, 0x40] # Smallest assigned CP932 codepoint greater than 255
0xFC4B.chr.bytes.to_a.should == [0xFC, 0x4B] # Largest assigned CP932 codepoint
end
# #5864
it "raises RangeError if self is invalid as a codepoint in the default internal encoding" do
[ [0x0100, "US-ASCII"],
[0x0100, "ASCII-8BIT"],
[0x0100, "EUC-JP"],
[0xA1A0, "EUC-JP"],
[0x0100, "ISO-8859-9"],
[620, "TIS-620"]
].each do |integer, encoding_name|
Encoding.default_internal = Encoding.find(encoding_name)
lambda { integer.chr }.should raise_error(RangeError)
end
end
end
end
end
describe "Integer#chr with an encoding argument" do
it "returns a String" do
900.chr(Encoding::UTF_8).should be_an_instance_of(String)
end
it "returns a new String for each call" do
8287.chr(Encoding::UTF_8).should_not equal(8287.chr(Encoding::UTF_8))
end
it "accepts a String as an argument" do
lambda { 0xA4A2.chr('euc-jp') }.should_not raise_error
end
it "converts a String to an Encoding as Encoding.find does" do
['utf-8', 'UTF-8', 'Utf-8'].each do |encoding|
7894.chr(encoding).encoding.should == Encoding::UTF_8
end
end
# http://redmine.ruby-lang.org/issues/4869
it "raises a RangeError is self is less than 0" do
lambda { -1.chr(Encoding::UTF_8) }.should raise_error(RangeError)
lambda { -bignum_value.chr(Encoding::EUC_JP) }.should raise_error(RangeError)
end
it "returns a String with the specified encoding" do
0x0000.chr(Encoding::US_ASCII).encoding.should == Encoding::US_ASCII
0x007F.chr(Encoding::US_ASCII).encoding.should == Encoding::US_ASCII
0x0000.chr(Encoding::ASCII_8BIT).encoding.should == Encoding::ASCII_8BIT
0x007F.chr(Encoding::ASCII_8BIT).encoding.should == Encoding::ASCII_8BIT
0x0080.chr(Encoding::ASCII_8BIT).encoding.should == Encoding::ASCII_8BIT
0x00FF.chr(Encoding::ASCII_8BIT).encoding.should == Encoding::ASCII_8BIT
0x0000.chr(Encoding::UTF_8).encoding.should == Encoding::UTF_8
0x007F.chr(Encoding::UTF_8).encoding.should == Encoding::UTF_8
0x0080.chr(Encoding::UTF_8).encoding.should == Encoding::UTF_8
0x00FF.chr(Encoding::UTF_8).encoding.should == Encoding::UTF_8
0x0100.chr(Encoding::UTF_8).encoding.should == Encoding::UTF_8
0x3000.chr(Encoding::UTF_8).encoding.should == Encoding::UTF_8
0x0000.chr(Encoding::SHIFT_JIS).encoding.should == Encoding::SHIFT_JIS
0x007F.chr(Encoding::SHIFT_JIS).encoding.should == Encoding::SHIFT_JIS
0x00A1.chr(Encoding::SHIFT_JIS).encoding.should == Encoding::SHIFT_JIS
0x00DF.chr(Encoding::SHIFT_JIS).encoding.should == Encoding::SHIFT_JIS
0x8140.chr(Encoding::SHIFT_JIS).encoding.should == Encoding::SHIFT_JIS
0xFC4B.chr(Encoding::SHIFT_JIS).encoding.should == Encoding::SHIFT_JIS
end
it "returns a String encoding self interpreted as a codepoint in the specified encoding" do
0x0000.chr(Encoding::US_ASCII).bytes.to_a.should == [0x00]
0x007F.chr(Encoding::US_ASCII).bytes.to_a.should == [0x7F]
0x0000.chr(Encoding::ASCII_8BIT).bytes.to_a.should == [0x00]
0x007F.chr(Encoding::ASCII_8BIT).bytes.to_a.should == [0x7F]
0x0080.chr(Encoding::ASCII_8BIT).bytes.to_a.should == [0x80]
0x00FF.chr(Encoding::ASCII_8BIT).bytes.to_a.should == [0xFF]
0x0000.chr(Encoding::UTF_8).bytes.to_a.should == [0x00]
0x007F.chr(Encoding::UTF_8).bytes.to_a.should == [0x7F]
0x0080.chr(Encoding::UTF_8).bytes.to_a.should == [0xC2, 0x80]
0x00FF.chr(Encoding::UTF_8).bytes.to_a.should == [0xC3, 0xBF]
0x0100.chr(Encoding::UTF_8).bytes.to_a.should == [0xC4, 0x80]
0x3000.chr(Encoding::UTF_8).bytes.to_a.should == [0xE3, 0x80, 0x80]
0x0000.chr(Encoding::SHIFT_JIS).bytes.to_a.should == [0x00]
0x007F.chr(Encoding::SHIFT_JIS).bytes.to_a.should == [0x7F]
0x00A1.chr(Encoding::SHIFT_JIS).bytes.to_a.should == [0xA1]
0x00DF.chr(Encoding::SHIFT_JIS).bytes.to_a.should == [0xDF]
0x8140.chr(Encoding::SHIFT_JIS).bytes.to_a.should == [0x81, 0x40] # Smallest assigned CP932 codepoint greater than 255
0xFC4B.chr(Encoding::SHIFT_JIS).bytes.to_a.should == [0xFC, 0x4B] # Largest assigned CP932 codepoint
end
# #5864
it "raises RangeError if self is invalid as a codepoint in the specified encoding" do
[ [0x80, "US-ASCII"],
[0x0100, "ASCII-8BIT"],
[0x0100, "EUC-JP"],
[0xA1A0, "EUC-JP"],
[0xA1, "EUC-JP"],
[0x80, "SHIFT_JIS"],
[0xE0, "SHIFT_JIS"],
[0x0100, "ISO-8859-9"],
[620, "TIS-620"],
[0xD800, "UTF-8"],
[0xDBFF, "UTF-8"],
[0xDC00, "UTF-8"],
[0xDFFF, "UTF-8"],
[0xD800, "UTF-16"],
[0xDBFF, "UTF-16"],
[0xDC00, "UTF-16"],
[0xDFFF, "UTF-16"],
].each do |integer, encoding_name|
lambda { integer.chr(encoding_name) }.should raise_error(RangeError)
end
end
end
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