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ruby--ruby/test/ruby/test_string.rb
nobu 1dc020917f test_regexp.rb, test_string.rb: suppress warnings 
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43105 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-10-01 07:27:14 +00:00

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require 'test/unit'
require_relative 'envutil'
# use of $= is deprecated after 1.7.1
def pre_1_7_1
end
class TestString < Test::Unit::TestCase
ENUMERATOR_WANTARRAY = RUBY_VERSION >= "3.0.0"
def initialize(*args)
@cls = String
@aref_re_nth = true
@aref_re_silent = false
@aref_slicebang_silent = true
super
end
def S(str)
@cls.new(str)
end
def test_s_new
assert_equal("RUBY", S("RUBY"))
end
def test_AREF # '[]'
assert_equal("A", S("AooBar")[0])
assert_equal("B", S("FooBaB")[-1])
assert_equal(nil, S("FooBar")[6])
assert_equal(nil, S("FooBar")[-7])
assert_equal(S("Foo"), S("FooBar")[0,3])
assert_equal(S("Bar"), S("FooBar")[-3,3])
assert_equal(S(""), S("FooBar")[6,2])
assert_equal(nil, S("FooBar")[-7,10])
assert_equal(S("Foo"), S("FooBar")[0..2])
assert_equal(S("Foo"), S("FooBar")[0...3])
assert_equal(S("Bar"), S("FooBar")[-3..-1])
assert_equal(S(""), S("FooBar")[6..2])
assert_equal(nil, S("FooBar")[-10..-7])
assert_equal(S("Foo"), S("FooBar")[/^F../])
assert_equal(S("Bar"), S("FooBar")[/..r$/])
assert_equal(nil, S("FooBar")[/xyzzy/])
assert_equal(nil, S("FooBar")[/plugh/])
assert_equal(S("Foo"), S("FooBar")[S("Foo")])
assert_equal(S("Bar"), S("FooBar")[S("Bar")])
assert_equal(nil, S("FooBar")[S("xyzzy")])
assert_equal(nil, S("FooBar")[S("plugh")])
if @aref_re_nth
assert_equal(S("Foo"), S("FooBar")[/([A-Z]..)([A-Z]..)/, 1])
assert_equal(S("Bar"), S("FooBar")[/([A-Z]..)([A-Z]..)/, 2])
assert_equal(nil, S("FooBar")[/([A-Z]..)([A-Z]..)/, 3])
assert_equal(S("Bar"), S("FooBar")[/([A-Z]..)([A-Z]..)/, -1])
assert_equal(S("Foo"), S("FooBar")[/([A-Z]..)([A-Z]..)/, -2])
assert_equal(nil, S("FooBar")[/([A-Z]..)([A-Z]..)/, -3])
end
o = Object.new
def o.to_int; 2; end
assert_equal("o", "foo"[o])
assert_raise(ArgumentError) { "foo"[] }
end
def test_ASET # '[]='
s = S("FooBar")
s[0] = S('A')
assert_equal(S("AooBar"), s)
s[-1]= S('B')
assert_equal(S("AooBaB"), s)
assert_raise(IndexError) { s[-7] = S("xyz") }
assert_equal(S("AooBaB"), s)
s[0] = S("ABC")
assert_equal(S("ABCooBaB"), s)
s = S("FooBar")
s[0,3] = S("A")
assert_equal(S("ABar"),s)
s[0] = S("Foo")
assert_equal(S("FooBar"), s)
s[-3,3] = S("Foo")
assert_equal(S("FooFoo"), s)
assert_raise(IndexError) { s[7,3] = S("Bar") }
assert_raise(IndexError) { s[-7,3] = S("Bar") }
s = S("FooBar")
s[0..2] = S("A")
assert_equal(S("ABar"), s)
s[1..3] = S("Foo")
assert_equal(S("AFoo"), s)
s[-4..-4] = S("Foo")
assert_equal(S("FooFoo"), s)
assert_raise(RangeError) { s[7..10] = S("Bar") }
assert_raise(RangeError) { s[-7..-10] = S("Bar") }
s = S("FooBar")
s[/^F../]= S("Bar")
assert_equal(S("BarBar"), s)
s[/..r$/] = S("Foo")
assert_equal(S("BarFoo"), s)
if @aref_re_silent
s[/xyzzy/] = S("None")
assert_equal(S("BarFoo"), s)
else
assert_raise(IndexError) { s[/xyzzy/] = S("None") }
end
if @aref_re_nth
s[/([A-Z]..)([A-Z]..)/, 1] = S("Foo")
assert_equal(S("FooFoo"), s)
s[/([A-Z]..)([A-Z]..)/, 2] = S("Bar")
assert_equal(S("FooBar"), s)
assert_raise(IndexError) { s[/([A-Z]..)([A-Z]..)/, 3] = "None" }
s[/([A-Z]..)([A-Z]..)/, -1] = S("Foo")
assert_equal(S("FooFoo"), s)
s[/([A-Z]..)([A-Z]..)/, -2] = S("Bar")
assert_equal(S("BarFoo"), s)
assert_raise(IndexError) { s[/([A-Z]..)([A-Z]..)/, -3] = "None" }
end
s = S("FooBar")
s[S("Foo")] = S("Bar")
assert_equal(S("BarBar"), s)
pre_1_7_1 do
s = S("FooBar")
s[S("Foo")] = S("xyz")
assert_equal(S("xyzBar"), s)
$= = true
s = S("FooBar")
s[S("FOO")] = S("Bar")
assert_equal(S("BarBar"), s)
s[S("FOO")] = S("xyz")
assert_equal(S("BarBar"), s)
$= = false
end
s = S("a string")
s[0..s.size] = S("another string")
assert_equal(S("another string"), s)
o = Object.new
def o.to_int; 2; end
s = "foo"
s[o] = "bar"
assert_equal("fobar", s)
assert_raise(ArgumentError) { "foo"[1, 2, 3] = "" }
end
def test_CMP # '<=>'
assert_equal(1, S("abcdef") <=> S("abcde"))
assert_equal(0, S("abcdef") <=> S("abcdef"))
assert_equal(-1, S("abcde") <=> S("abcdef"))
assert_equal(-1, S("ABCDEF") <=> S("abcdef"))
pre_1_7_1 do
$= = true
assert_equal(0, S("ABCDEF") <=> S("abcdef"))
$= = false
end
assert_nil("foo" <=> Object.new)
o = Object.new
def o.to_str; "bar"; end
assert_equal(1, "foo" <=> o)
class << o;remove_method :to_str;end
def o.<=>(x); nil; end
assert_nil("foo" <=> o)
class << o;remove_method :<=>;end
def o.<=>(x); 1; end
assert_equal(-1, "foo" <=> o)
class << o;remove_method :<=>;end
def o.<=>(x); 2**100; end
assert_equal(-1, "foo" <=> o)
end
def test_EQUAL # '=='
assert_equal(false, S("foo") == :foo)
assert(S("abcdef") == S("abcdef"))
pre_1_7_1 do
$= = true
assert(S("CAT") == S('cat'))
assert(S("CaT") == S('cAt'))
$= = false
end
assert(S("CAT") != S('cat'))
assert(S("CaT") != S('cAt'))
o = Object.new
def o.to_str; end
def o.==(x); false; end
assert_equal(false, "foo" == o)
class << o;remove_method :==;end
def o.==(x); true; end
assert_equal(true, "foo" == o)
end
def test_LSHIFT # '<<'
assert_equal(S("world!"), S("world") << 33)
assert_equal(S("world!"), S("world") << S("!"))
s = "a"
10.times {|i|
s << s
assert_equal("a" * (2 << i), s)
}
s = ["foo"].pack("p")
l = s.size
s << "bar"
assert_equal(l + 3, s.size)
bug = '[ruby-core:27583]'
assert_raise(RangeError, bug) {S("a".force_encoding(Encoding::UTF_8)) << -3}
assert_raise(RangeError, bug) {S("a".force_encoding(Encoding::UTF_8)) << -2}
assert_raise(RangeError, bug) {S("a".force_encoding(Encoding::UTF_8)) << -1}
assert_raise(RangeError, bug) {S("a".force_encoding(Encoding::UTF_8)) << 0x81308130}
assert_nothing_raised {S("a".force_encoding(Encoding::GB18030)) << 0x81308130}
end
def test_MATCH # '=~'
assert_equal(10, S("FeeFieFoo-Fum") =~ /Fum$/)
assert_equal(nil, S("FeeFieFoo-Fum") =~ /FUM$/)
pre_1_7_1 do
$= = true
assert_equal(10, S("FeeFieFoo-Fum") =~ /FUM$/)
$= = false
end
o = Object.new
def o.=~(x); x + "bar"; end
assert_equal("foobar", S("foo") =~ o)
assert_raise(TypeError) { S("foo") =~ "foo" }
end
def test_MOD # '%'
assert_equal(S("00123"), S("%05d") % 123)
assert_equal(S("123 |00000001"), S("%-5s|%08x") % [123, 1])
x = S("%3s %-4s%%foo %.0s%5d %#x%c%3.1f %b %x %X %#b %#x %#X") %
[S("hi"),
123,
S("never seen"),
456,
0,
?A,
3.0999,
11,
171,
171,
11,
171,
171]
assert_equal(S(' hi 123 %foo 456 0A3.1 1011 ab AB 0b1011 0xab 0XAB'), x)
end
def test_MUL # '*'
assert_equal(S("XXX"), S("X") * 3)
assert_equal(S("HOHO"), S("HO") * 2)
end
def test_PLUS # '+'
assert_equal(S("Yodel"), S("Yo") + S("del"))
end
def casetest(a, b, rev=false)
case a
when b
assert(!rev)
else
assert(rev)
end
end
def test_VERY_EQUAL # '==='
# assert_equal(true, S("foo") === :foo)
casetest(S("abcdef"), S("abcdef"))
pre_1_7_1 do
$= = true
casetest(S("CAT"), S('cat'))
casetest(S("CaT"), S('cAt'))
$= = false
end
casetest(S("CAT"), S('cat'), true) # Reverse the test - we don't want to
casetest(S("CaT"), S('cAt'), true) # find these in the case.
end
def test_capitalize
assert_equal(S("Hello"), S("hello").capitalize)
assert_equal(S("Hello"), S("hELLO").capitalize)
assert_equal(S("123abc"), S("123ABC").capitalize)
end
def test_capitalize!
a = S("hello"); a.capitalize!
assert_equal(S("Hello"), a)
a = S("hELLO"); a.capitalize!
assert_equal(S("Hello"), a)
a = S("123ABC"); a.capitalize!
assert_equal(S("123abc"), a)
assert_equal(nil, S("123abc").capitalize!)
assert_equal(S("123abc"), S("123ABC").capitalize!)
assert_equal(S("Abc"), S("ABC").capitalize!)
assert_equal(S("Abc"), S("abc").capitalize!)
assert_equal(nil, S("Abc").capitalize!)
a = S("hello")
b = a.dup
assert_equal(S("Hello"), a.capitalize!)
assert_equal(S("hello"), b)
end
Bug2463 = '[ruby-dev:39856]'
def test_center
assert_equal(S("hello"), S("hello").center(4))
assert_equal(S(" hello "), S("hello").center(11))
assert_equal(S("ababaababa"), S("").center(10, "ab"), Bug2463)
assert_equal(S("ababaababab"), S("").center(11, "ab"), Bug2463)
end
def test_chomp
assert_equal(S("hello"), S("hello").chomp("\n"))
assert_equal(S("hello"), S("hello\n").chomp("\n"))
save = $/
$/ = "\n"
assert_equal(S("hello"), S("hello").chomp)
assert_equal(S("hello"), S("hello\n").chomp)
$/ = "!"
assert_equal(S("hello"), S("hello").chomp)
assert_equal(S("hello"), S("hello!").chomp)
$/ = save
assert_equal(S("a").hash, S("a\u0101").chomp(S("\u0101")).hash, '[ruby-core:22414]')
end
def test_chomp!
a = S("hello")
a.chomp!(S("\n"))
assert_equal(S("hello"), a)
assert_equal(nil, a.chomp!(S("\n")))
a = S("hello\n")
a.chomp!(S("\n"))
assert_equal(S("hello"), a)
save = $/
$/ = "\n"
a = S("hello")
a.chomp!
assert_equal(S("hello"), a)
a = S("hello\n")
a.chomp!
assert_equal(S("hello"), a)
$/ = "!"
a = S("hello")
a.chomp!
assert_equal(S("hello"), a)
a="hello!"
a.chomp!
assert_equal(S("hello"), a)
$/ = save
a = S("hello\n")
b = a.dup
assert_equal(S("hello"), a.chomp!)
assert_equal(S("hello\n"), b)
s = "foo\r\n"
s.chomp!
assert_equal("foo", s)
s = "foo\r"
s.chomp!
assert_equal("foo", s)
s = "foo\r\n"
s.chomp!("")
assert_equal("foo", s)
s = "foo\r"
s.chomp!("")
assert_equal("foo\r", s)
assert_equal(S("a").hash, S("a\u0101").chomp!(S("\u0101")).hash, '[ruby-core:22414]')
end
def test_chop
assert_equal(S("hell"), S("hello").chop)
assert_equal(S("hello"), S("hello\r\n").chop)
assert_equal(S("hello\n"), S("hello\n\r").chop)
assert_equal(S(""), S("\r\n").chop)
assert_equal(S(""), S("").chop)
assert_equal(S("a").hash, S("a\u00d8").chop.hash)
end
def test_chop!
a = S("hello").chop!
assert_equal(S("hell"), a)
a = S("hello\r\n").chop!
assert_equal(S("hello"), a)
a = S("hello\n\r").chop!
assert_equal(S("hello\n"), a)
a = S("\r\n").chop!
assert_equal(S(""), a)
a = S("").chop!
assert_nil(a)
a = S("a\u00d8")
a.chop!
assert_equal(S("a").hash, a.hash)
a = S("hello\n")
b = a.dup
assert_equal(S("hello"), a.chop!)
assert_equal(S("hello\n"), b)
end
def test_clone
for taint in [ false, true ]
for frozen in [ false, true ]
a = S("Cool")
a.taint if taint
a.freeze if frozen
b = a.clone
assert_equal(a, b)
assert(a.__id__ != b.__id__)
assert_equal(a.frozen?, b.frozen?)
assert_equal(a.tainted?, b.tainted?)
end
end
null = File.exist?("/dev/null") ? "/dev/null" : "NUL" # maybe DOSISH
assert_equal("", File.read(null).clone, '[ruby-dev:32819] reported by Kazuhiro NISHIYAMA')
end
def test_concat
assert_equal(S("world!"), S("world").concat(33))
assert_equal(S("world!"), S("world").concat(S('!')))
bug7090 = '[ruby-core:47751]'
result = S("").force_encoding(Encoding::UTF_16LE)
result << 0x0300
expected = S("\u0300".encode(Encoding::UTF_16LE))
assert_equal(expected, result, bug7090)
end
def test_count
a = S("hello world")
assert_equal(5, a.count(S("lo")))
assert_equal(2, a.count(S("lo"), S("o")))
assert_equal(4, a.count(S("hello"), S("^l")))
assert_equal(4, a.count(S("ej-m")))
assert_equal(0, S("y").count(S("a\\-z")))
assert_equal(5, "abc\u{3042 3044 3046}".count("^a"))
assert_equal(1, "abc\u{3042 3044 3046}".count("\u3042"))
assert_equal(5, "abc\u{3042 3044 3046}".count("^\u3042"))
assert_equal(2, "abc\u{3042 3044 3046}".count("a-z", "^a"))
assert_equal(0, "abc\u{3042 3044 3046}".count("a", "\u3042"))
assert_equal(0, "abc\u{3042 3044 3046}".count("\u3042", "a"))
assert_equal(0, "abc\u{3042 3044 3046}".count("\u3042", "\u3044"))
assert_equal(4, "abc\u{3042 3044 3046}".count("^a", "^\u3044"))
assert_equal(4, "abc\u{3042 3044 3046}".count("^\u3044", "^a"))
assert_equal(4, "abc\u{3042 3044 3046}".count("^\u3042", "^\u3044"))
assert_raise(ArgumentError) { "foo".count }
end
def test_crypt
assert_equal(S('aaGUC/JkO9/Sc'), S("mypassword").crypt(S("aa")))
assert(S('aaGUC/JkO9/Sc') != S("mypassword").crypt(S("ab")))
end
def test_delete
assert_equal(S("heo"), S("hello").delete(S("l"), S("lo")))
assert_equal(S("he"), S("hello").delete(S("lo")))
assert_equal(S("hell"), S("hello").delete(S("aeiou"), S("^e")))
assert_equal(S("ho"), S("hello").delete(S("ej-m")))
assert_equal("a".hash, "a\u0101".delete("\u0101").hash, '[ruby-talk:329267]')
assert_equal(true, "a\u0101".delete("\u0101").ascii_only?)
assert_equal(true, "a\u3041".delete("\u3041").ascii_only?)
assert_equal(false, "a\u3041\u3042".tr("\u3041", "a").ascii_only?)
assert_equal("a", "abc\u{3042 3044 3046}".delete("^a"))
assert_equal("bc\u{3042 3044 3046}", "abc\u{3042 3044 3046}".delete("a"))
assert_equal("\u3042", "abc\u{3042 3044 3046}".delete("^\u3042"))
bug6160 = '[ruby-dev:45374]'
assert_equal("", '\\'.delete('\\'), bug6160)
end
def test_delete!
a = S("hello")
a.delete!(S("l"), S("lo"))
assert_equal(S("heo"), a)
a = S("hello")
a.delete!(S("lo"))
assert_equal(S("he"), a)
a = S("hello")
a.delete!(S("aeiou"), S("^e"))
assert_equal(S("hell"), a)
a = S("hello")
a.delete!(S("ej-m"))
assert_equal(S("ho"), a)
a = S("hello")
assert_nil(a.delete!(S("z")))
a = S("hello")
b = a.dup
a.delete!(S("lo"))
assert_equal(S("he"), a)
assert_equal(S("hello"), b)
a = S("hello")
a.delete!(S("^el"))
assert_equal(S("ell"), a)
assert_raise(ArgumentError) { S("foo").delete! }
end
def test_downcase
assert_equal(S("hello"), S("helLO").downcase)
assert_equal(S("hello"), S("hello").downcase)
assert_equal(S("hello"), S("HELLO").downcase)
assert_equal(S("abc hello 123"), S("abc HELLO 123").downcase)
end
def test_downcase!
a = S("helLO")
b = a.dup
assert_equal(S("hello"), a.downcase!)
assert_equal(S("hello"), a)
assert_equal(S("helLO"), b)
a=S("hello")
assert_nil(a.downcase!)
assert_equal(S("hello"), a)
end
def test_dump
a= S("Test") << 1 << 2 << 3 << 9 << 13 << 10
assert_equal(S('"Test\\x01\\x02\\x03\\t\\r\\n"'), a.dump)
end
def test_dup
for taint in [ false, true ]
for frozen in [ false, true ]
a = S("hello")
a.taint if taint
a.freeze if frozen
b = a.dup
assert_equal(a, b)
assert(a.__id__ != b.__id__)
assert(!b.frozen?)
assert_equal(a.tainted?, b.tainted?)
end
end
end
def test_each
save = $/
$/ = "\n"
res=[]
S("hello\nworld").lines.each {|x| res << x}
assert_equal(S("hello\n"), res[0])
assert_equal(S("world"), res[1])
res=[]
S("hello\n\n\nworld").lines(S('')).each {|x| res << x}
assert_equal(S("hello\n\n\n"), res[0])
assert_equal(S("world"), res[1])
$/ = "!"
res=[]
S("hello!world").lines.each {|x| res << x}
assert_equal(S("hello!"), res[0])
assert_equal(S("world"), res[1])
$/ = save
end
def test_each_byte
s = S("ABC")
res = []
assert_equal s.object_id, s.each_byte {|x| res << x }.object_id
assert_equal(65, res[0])
assert_equal(66, res[1])
assert_equal(67, res[2])
assert_equal 65, s.each_byte.next
end
def test_bytes
s = S("ABC")
assert_equal [65, 66, 67], s.bytes
if ENUMERATOR_WANTARRAY
assert_warn(/block not used/) {
assert_equal [65, 66, 67], s.bytes {}
}
else
assert_warning(/deprecated/) {
res = []
assert_equal s.object_id, s.bytes {|x| res << x }.object_id
assert_equal(65, res[0])
assert_equal(66, res[1])
assert_equal(67, res[2])
}
end
end
def test_each_codepoint
# Single byte optimization
assert_equal 65, S("ABC").each_codepoint.next
s = S("\u3042\u3044\u3046")
res = []
assert_equal s.object_id, s.each_codepoint {|x| res << x }.object_id
assert_equal(0x3042, res[0])
assert_equal(0x3044, res[1])
assert_equal(0x3046, res[2])
assert_equal 0x3042, s.each_codepoint.next
end
def test_codepoints
# Single byte optimization
assert_equal [65, 66, 67], S("ABC").codepoints
s = S("\u3042\u3044\u3046")
assert_equal [0x3042, 0x3044, 0x3046], s.codepoints
if ENUMERATOR_WANTARRAY
assert_warn(/block not used/) {
assert_equal [0x3042, 0x3044, 0x3046], s.codepoints {}
}
else
assert_warning(/deprecated/) {
res = []
assert_equal s.object_id, s.codepoints {|x| res << x }.object_id
assert_equal(0x3042, res[0])
assert_equal(0x3044, res[1])
assert_equal(0x3046, res[2])
}
end
end
def test_each_char
s = S("ABC")
res = []
assert_equal s.object_id, s.each_char {|x| res << x }.object_id
assert_equal("A", res[0])
assert_equal("B", res[1])
assert_equal("C", res[2])
assert_equal "A", S("ABC").each_char.next
end
def test_chars
s = S("ABC")
assert_equal ["A", "B", "C"], s.chars
if ENUMERATOR_WANTARRAY
assert_warn(/block not used/) {
assert_equal ["A", "B", "C"], s.chars {}
}
else
assert_warning(/deprecated/) {
res = []
assert_equal s.object_id, s.chars {|x| res << x }.object_id
assert_equal("A", res[0])
assert_equal("B", res[1])
assert_equal("C", res[2])
}
end
end
def test_each_line
save = $/
$/ = "\n"
res=[]
S("hello\nworld").each_line {|x| res << x}
assert_equal(S("hello\n"), res[0])
assert_equal(S("world"), res[1])
res=[]
S("hello\n\n\nworld").each_line(S('')) {|x| res << x}
assert_equal(S("hello\n\n\n"), res[0])
assert_equal(S("world"), res[1])
$/ = "!"
res=[]
S("hello!world").each_line {|x| res << x}
assert_equal(S("hello!"), res[0])
assert_equal(S("world"), res[1])
$/ = "ab"
res=[]
S("a").lines.each {|x| res << x}
assert_equal(1, res.size)
assert_equal(S("a"), res[0])
$/ = save
s = nil
"foo\nbar".each_line(nil) {|s2| s = s2 }
assert_equal("foo\nbar", s)
assert_equal "hello\n", S("hello\nworld").each_line.next
assert_equal "hello\nworld", S("hello\nworld").each_line(nil).next
bug7646 = "[ruby-dev:46827]"
assert_nothing_raised(bug7646) do
"\n\u0100".each_line("\n") {}
end
end
def test_lines
s = S("hello\nworld")
assert_equal ["hello\n", "world"], s.lines
assert_equal ["hello\nworld"], s.lines(nil)
if ENUMERATOR_WANTARRAY
assert_warn(/block not used/) {
assert_equal ["hello\n", "world"], s.lines {}
}
else
assert_warning(/deprecated/) {
res = []
assert_equal s.object_id, s.lines {|x| res << x }.object_id
assert_equal(S("hello\n"), res[0])
assert_equal(S("world"), res[1])
}
end
end
def test_empty?
assert(S("").empty?)
assert(!S("not").empty?)
end
def test_end_with?
assert_send([S("hello"), :end_with?, S("llo")])
assert_not_send([S("hello"), :end_with?, S("ll")])
assert_send([S("hello"), :end_with?, S("el"), S("lo")])
bug5536 = '[ruby-core:40623]'
assert_raise(TypeError, bug5536) {S("str").end_with? :not_convertible_to_string}
end
def test_eql?
a = S("hello")
assert(a.eql?(S("hello")))
assert(a.eql?(a))
end
def test_gsub
assert_equal(S("h*ll*"), S("hello").gsub(/[aeiou]/, S('*')))
assert_equal(S("h<e>ll<o>"), S("hello").gsub(/([aeiou])/, S('<\1>')))
assert_equal(S("h e l l o "),
S("hello").gsub(/./) { |s| s[0].to_s + S(' ')})
assert_equal(S("HELL-o"),
S("hello").gsub(/(hell)(.)/) { |s| $1.upcase + S('-') + $2 })
a = S("hello")
a.taint
assert(a.gsub(/./, S('X')).tainted?)
assert_equal("z", "abc".gsub(/./, "a" => "z"), "moved from btest/knownbug")
assert_raise(ArgumentError) { "foo".gsub }
end
def test_gsub_encoding
a = S("hello world")
a.force_encoding Encoding::UTF_8
b = S("hi")
b.force_encoding Encoding::US_ASCII
assert_equal Encoding::UTF_8, a.gsub(/hello/, b).encoding
c = S("everybody")
c.force_encoding Encoding::US_ASCII
assert_equal Encoding::UTF_8, a.gsub(/world/, c).encoding
end
def test_gsub!
a = S("hello")
b = a.dup
a.gsub!(/[aeiou]/, S('*'))
assert_equal(S("h*ll*"), a)
assert_equal(S("hello"), b)
a = S("hello")
a.gsub!(/([aeiou])/, S('<\1>'))
assert_equal(S("h<e>ll<o>"), a)
a = S("hello")
a.gsub!(/./) { |s| s[0].to_s + S(' ')}
assert_equal(S("h e l l o "), a)
a = S("hello")
a.gsub!(/(hell)(.)/) { |s| $1.upcase + S('-') + $2 }
assert_equal(S("HELL-o"), a)
r = S('X')
r.taint
a.gsub!(/./, r)
assert(a.tainted?)
a = S("hello")
assert_nil(a.sub!(S('X'), S('Y')))
end
def test_sub_hash
assert_equal('azc', 'abc'.sub(/b/, "b" => "z"))
assert_equal('ac', 'abc'.sub(/b/, {}))
assert_equal('a1c', 'abc'.sub(/b/, "b" => 1))
assert_equal('aBc', 'abc'.sub(/b/, Hash.new {|h, k| k.upcase }))
assert_equal('a[\&]c', 'abc'.sub(/b/, "b" => '[\&]'))
assert_equal('aBcabc', 'abcabc'.sub(/b/, Hash.new {|h, k| h[k] = k.upcase }))
assert_equal('aBcdef', 'abcdef'.sub(/de|b/, "b" => "B", "de" => "DE"))
end
def test_gsub_hash
assert_equal('azc', 'abc'.gsub(/b/, "b" => "z"))
assert_equal('ac', 'abc'.gsub(/b/, {}))
assert_equal('a1c', 'abc'.gsub(/b/, "b" => 1))
assert_equal('aBc', 'abc'.gsub(/b/, Hash.new {|h, k| k.upcase }))
assert_equal('a[\&]c', 'abc'.gsub(/b/, "b" => '[\&]'))
assert_equal('aBcaBc', 'abcabc'.gsub(/b/, Hash.new {|h, k| h[k] = k.upcase }))
assert_equal('aBcDEf', 'abcdef'.gsub(/de|b/, "b" => "B", "de" => "DE"))
end
def test_hash
assert_equal(S("hello").hash, S("hello").hash)
assert(S("hello").hash != S("helLO").hash)
bug4104 = '[ruby-core:33500]'
assert_not_equal(S("a").hash, S("a\0").hash, bug4104)
end
def test_hash_random
str = 'abc'
a = [str.hash.to_s]
3.times {
assert_in_out_err(["-e", "print #{str.dump}.hash"], "") do |r, e|
a += r
assert_equal([], e)
end
}
assert_not_equal([str.hash.to_s], a.uniq)
end
def test_hex
assert_equal(255, S("0xff").hex)
assert_equal(-255, S("-0xff").hex)
assert_equal(255, S("ff").hex)
assert_equal(-255, S("-ff").hex)
assert_equal(0, S("-ralph").hex)
assert_equal(-15, S("-fred").hex)
assert_equal(15, S("fred").hex)
end
def test_include?
assert( S("foobar").include?(?f))
assert( S("foobar").include?(S("foo")))
assert(!S("foobar").include?(S("baz")))
assert(!S("foobar").include?(?z))
end
def test_index
assert_equal(0, S("hello").index(?h))
assert_equal(1, S("hello").index(S("ell")))
assert_equal(2, S("hello").index(/ll./))
assert_equal(3, S("hello").index(?l, 3))
assert_equal(3, S("hello").index(S("l"), 3))
assert_equal(3, S("hello").index(/l./, 3))
assert_nil(S("hello").index(?z, 3))
assert_nil(S("hello").index(S("z"), 3))
assert_nil(S("hello").index(/z./, 3))
assert_nil(S("hello").index(?z))
assert_nil(S("hello").index(S("z")))
assert_nil(S("hello").index(/z./))
assert_equal(0, S("").index(S("")))
assert_equal(0, S("").index(//))
assert_nil(S("").index(S("hello")))
assert_nil(S("").index(/hello/))
assert_equal(0, S("hello").index(S("")))
assert_equal(0, S("hello").index(//))
s = S("long") * 1000 << "x"
assert_nil(s.index(S("y")))
assert_equal(4 * 1000, s.index(S("x")))
s << "yx"
assert_equal(4 * 1000, s.index(S("x")))
assert_equal(4 * 1000, s.index(S("xyx")))
o = Object.new
def o.to_str; "bar"; end
assert_equal(3, "foobarbarbaz".index(o))
assert_raise(TypeError) { "foo".index(Object.new) }
assert_nil("foo".index(//, -100))
assert_nil($~)
end
def test_intern
assert_equal(:koala, S("koala").intern)
assert(:koala != S("Koala").intern)
end
def test_length
assert_equal(0, S("").length)
assert_equal(4, S("1234").length)
assert_equal(6, S("1234\r\n").length)
assert_equal(7, S("\0011234\r\n").length)
end
def test_ljust
assert_equal(S("hello"), S("hello").ljust(4))
assert_equal(S("hello "), S("hello").ljust(11))
assert_equal(S("ababababab"), S("").ljust(10, "ab"), Bug2463)
assert_equal(S("abababababa"), S("").ljust(11, "ab"), Bug2463)
end
def test_next
assert_equal(S("abd"), S("abc").next)
assert_equal(S("z"), S("y").next)
assert_equal(S("aaa"), S("zz").next)
assert_equal(S("124"), S("123").next)
assert_equal(S("1000"), S("999").next)
assert_equal(S("2000aaa"), S("1999zzz").next)
assert_equal(S("AAAAA000"), S("ZZZZ999").next)
assert_equal(S("*+"), S("**").next)
end
def test_next!
a = S("abc")
b = a.dup
assert_equal(S("abd"), a.next!)
assert_equal(S("abd"), a)
assert_equal(S("abc"), b)
a = S("y")
assert_equal(S("z"), a.next!)
assert_equal(S("z"), a)
a = S("zz")
assert_equal(S("aaa"), a.next!)
assert_equal(S("aaa"), a)
a = S("123")
assert_equal(S("124"), a.next!)
assert_equal(S("124"), a)
a = S("999")
assert_equal(S("1000"), a.next!)
assert_equal(S("1000"), a)
a = S("1999zzz")
assert_equal(S("2000aaa"), a.next!)
assert_equal(S("2000aaa"), a)
a = S("ZZZZ999")
assert_equal(S("AAAAA000"), a.next!)
assert_equal(S("AAAAA000"), a)
a = S("**")
assert_equal(S("*+"), a.next!)
assert_equal(S("*+"), a)
end
def test_oct
assert_equal(255, S("0377").oct)
assert_equal(255, S("377").oct)
assert_equal(-255, S("-0377").oct)
assert_equal(-255, S("-377").oct)
assert_equal(0, S("OO").oct)
assert_equal(24, S("030OO").oct)
end
def test_replace
a = S("foo")
assert_equal(S("f"), a.replace(S("f")))
a = S("foo")
assert_equal(S("foobar"), a.replace(S("foobar")))
a = S("foo")
a.taint
b = a.replace(S("xyz"))
assert_equal(S("xyz"), b)
assert(b.tainted?)
s = "foo" * 100
s2 = ("bar" * 100).dup
s.replace(s2)
assert_equal(s2, s)
s2 = ["foo"].pack("p")
s.replace(s2)
assert_equal(s2, s)
fs = "".freeze
assert_raise(RuntimeError) { fs.replace("a") }
assert_raise(RuntimeError) { fs.replace(fs) }
assert_raise(ArgumentError) { fs.replace() }
assert_raise(RuntimeError) { fs.replace(42) }
end
def test_reverse
assert_equal(S("beta"), S("ateb").reverse)
assert_equal(S("madamImadam"), S("madamImadam").reverse)
a=S("beta")
assert_equal(S("ateb"), a.reverse)
assert_equal(S("beta"), a)
end
def test_reverse!
a = S("beta")
b = a.dup
assert_equal(S("ateb"), a.reverse!)
assert_equal(S("ateb"), a)
assert_equal(S("beta"), b)
assert_equal(S("madamImadam"), S("madamImadam").reverse!)
a = S("madamImadam")
assert_equal(S("madamImadam"), a.reverse!) # ??
assert_equal(S("madamImadam"), a)
end
def test_rindex
assert_equal(3, S("hello").rindex(?l))
assert_equal(6, S("ell, hello").rindex(S("ell")))
assert_equal(7, S("ell, hello").rindex(/ll./))
assert_equal(3, S("hello,lo").rindex(?l, 3))
assert_equal(3, S("hello,lo").rindex(S("l"), 3))
assert_equal(3, S("hello,lo").rindex(/l./, 3))
assert_nil(S("hello").rindex(?z, 3))
assert_nil(S("hello").rindex(S("z"), 3))
assert_nil(S("hello").rindex(/z./, 3))
assert_nil(S("hello").rindex(?z))
assert_nil(S("hello").rindex(S("z")))
assert_nil(S("hello").rindex(/z./))
o = Object.new
def o.to_str; "bar"; end
assert_equal(6, "foobarbarbaz".rindex(o))
assert_raise(TypeError) { "foo".rindex(Object.new) }
assert_nil("foo".rindex(//, -100))
assert_nil($~)
end
def test_rjust
assert_equal(S("hello"), S("hello").rjust(4))
assert_equal(S(" hello"), S("hello").rjust(11))
assert_equal(S("ababababab"), S("").rjust(10, "ab"), Bug2463)
assert_equal(S("abababababa"), S("").rjust(11, "ab"), Bug2463)
end
def test_scan
a = S("cruel world")
assert_equal([S("cruel"), S("world")],a.scan(/\w+/))
assert_equal([S("cru"), S("el "), S("wor")],a.scan(/.../))
assert_equal([[S("cru")], [S("el ")], [S("wor")]],a.scan(/(...)/))
res = []
a.scan(/\w+/) { |w| res << w }
assert_equal([S("cruel"), S("world") ],res)
res = []
a.scan(/.../) { |w| res << w }
assert_equal([S("cru"), S("el "), S("wor")],res)
res = []
a.scan(/(...)/) { |w| res << w }
assert_equal([[S("cru")], [S("el ")], [S("wor")]],res)
a = S("hello")
a.taint
res = []
a.scan(/./) { |w| res << w }
assert(res[0].tainted?, '[ruby-core:33338] #4087')
end
def test_size
assert_equal(0, S("").size)
assert_equal(4, S("1234").size)
assert_equal(6, S("1234\r\n").size)
assert_equal(7, S("\0011234\r\n").size)
end
def test_slice
assert_equal(?A, S("AooBar").slice(0))
assert_equal(?B, S("FooBaB").slice(-1))
assert_nil(S("FooBar").slice(6))
assert_nil(S("FooBar").slice(-7))
assert_equal(S("Foo"), S("FooBar").slice(0,3))
assert_equal(S(S("Bar")), S("FooBar").slice(-3,3))
assert_nil(S("FooBar").slice(7,2)) # Maybe should be six?
assert_nil(S("FooBar").slice(-7,10))
assert_equal(S("Foo"), S("FooBar").slice(0..2))
assert_equal(S("Bar"), S("FooBar").slice(-3..-1))
assert_equal(S(""), S("FooBar").slice(6..2))
assert_nil(S("FooBar").slice(-10..-7))
assert_equal(S("Foo"), S("FooBar").slice(/^F../))
assert_equal(S("Bar"), S("FooBar").slice(/..r$/))
assert_nil(S("FooBar").slice(/xyzzy/))
assert_nil(S("FooBar").slice(/plugh/))
assert_equal(S("Foo"), S("FooBar").slice(S("Foo")))
assert_equal(S("Bar"), S("FooBar").slice(S("Bar")))
assert_nil(S("FooBar").slice(S("xyzzy")))
assert_nil(S("FooBar").slice(S("plugh")))
end
def test_slice!
a = S("AooBar")
b = a.dup
assert_equal(?A, a.slice!(0))
assert_equal(S("ooBar"), a)
assert_equal(S("AooBar"), b)
a = S("FooBar")
assert_equal(?r,a.slice!(-1))
assert_equal(S("FooBa"), a)
a = S("FooBar")
if @aref_slicebang_silent
assert_nil( a.slice!(6) )
else
assert_raise(IndexError) { a.slice!(6) }
end
assert_equal(S("FooBar"), a)
if @aref_slicebang_silent
assert_nil( a.slice!(-7) )
else
assert_raise(IndexError) { a.slice!(-7) }
end
assert_equal(S("FooBar"), a)
a = S("FooBar")
assert_equal(S("Foo"), a.slice!(0,3))
assert_equal(S("Bar"), a)
a = S("FooBar")
assert_equal(S("Bar"), a.slice!(-3,3))
assert_equal(S("Foo"), a)
a=S("FooBar")
if @aref_slicebang_silent
assert_nil(a.slice!(7,2)) # Maybe should be six?
else
assert_raise(IndexError) {a.slice!(7,2)} # Maybe should be six?
end
assert_equal(S("FooBar"), a)
if @aref_slicebang_silent
assert_nil(a.slice!(-7,10))
else
assert_raise(IndexError) {a.slice!(-7,10)}
end
assert_equal(S("FooBar"), a)
a=S("FooBar")
assert_equal(S("Foo"), a.slice!(0..2))
assert_equal(S("Bar"), a)
a=S("FooBar")
assert_equal(S("Bar"), a.slice!(-3..-1))
assert_equal(S("Foo"), a)
a=S("FooBar")
if @aref_slicebang_silent
assert_equal(S(""), a.slice!(6..2))
else
assert_raise(RangeError) {a.slice!(6..2)}
end
assert_equal(S("FooBar"), a)
if @aref_slicebang_silent
assert_nil(a.slice!(-10..-7))
else
assert_raise(RangeError) {a.slice!(-10..-7)}
end
assert_equal(S("FooBar"), a)
a=S("FooBar")
assert_equal(S("Foo"), a.slice!(/^F../))
assert_equal(S("Bar"), a)
a=S("FooBar")
assert_equal(S("Bar"), a.slice!(/..r$/))
assert_equal(S("Foo"), a)
a=S("FooBar")
if @aref_slicebang_silent
assert_nil(a.slice!(/xyzzy/))
else
assert_raise(IndexError) {a.slice!(/xyzzy/)}
end
assert_equal(S("FooBar"), a)
if @aref_slicebang_silent
assert_nil(a.slice!(/plugh/))
else
assert_raise(IndexError) {a.slice!(/plugh/)}
end
assert_equal(S("FooBar"), a)
a=S("FooBar")
assert_equal(S("Foo"), a.slice!(S("Foo")))
assert_equal(S("Bar"), a)
a=S("FooBar")
assert_equal(S("Bar"), a.slice!(S("Bar")))
assert_equal(S("Foo"), a)
pre_1_7_1 do
a=S("FooBar")
assert_nil(a.slice!(S("xyzzy")))
assert_equal(S("FooBar"), a)
assert_nil(a.slice!(S("plugh")))
assert_equal(S("FooBar"), a)
end
assert_raise(ArgumentError) { "foo".slice! }
end
def test_split
assert_nil($;)
assert_equal([S("a"), S("b"), S("c")], S(" a b\t c ").split)
assert_equal([S("a"), S("b"), S("c")], S(" a b\t c ").split(S(" ")))
assert_equal([S(" a "), S(" b "), S(" c ")], S(" a | b | c ").split(S("|")))
assert_equal([S("a"), S("b"), S("c")], S("aXXbXXcXX").split(/X./))
assert_equal([S("a"), S("b"), S("c")], S("abc").split(//))
assert_equal([S("a|b|c")], S("a|b|c").split(S('|'), 1))
assert_equal([S("a"), S("b|c")], S("a|b|c").split(S('|'), 2))
assert_equal([S("a"), S("b"), S("c")], S("a|b|c").split(S('|'), 3))
assert_equal([S("a"), S("b"), S("c"), S("")], S("a|b|c|").split(S('|'), -1))
assert_equal([S("a"), S("b"), S("c"), S(""), S("")], S("a|b|c||").split(S('|'), -1))
assert_equal([S("a"), S(""), S("b"), S("c")], S("a||b|c|").split(S('|')))
assert_equal([S("a"), S(""), S("b"), S("c"), S("")], S("a||b|c|").split(S('|'), -1))
assert_equal([], "".split(//, 1))
assert_equal("[2, 3]", [1,2,3].slice!(1,10000).inspect, "moved from btest/knownbug")
bug6206 = '[ruby-dev:45441]'
Encoding.list.each do |enc|
next unless enc.ascii_compatible?
s = S("a:".force_encoding(enc))
assert_equal([enc]*2, s.split(":", 2).map(&:encoding), bug6206)
end
bug8642 = '[ruby-core:56036] [Bug #8642]'
[
Encoding::UTF_16BE, Encoding::UTF_16LE,
Encoding::UTF_32BE, Encoding::UTF_32LE,
].each do |enc|
s = S("abc,def".encode(enc))
assert_equal(["abc", "def"].map {|c| c.encode(enc)},
s.split(",".encode(enc)),
"#{bug8642} in #{enc.name}")
end
end
def test_squeeze
assert_equal(S("abc"), S("aaabbbbccc").squeeze)
assert_equal(S("aa bb cc"), S("aa bb cc").squeeze(S(" ")))
assert_equal(S("BxTyWz"), S("BxxxTyyyWzzzzz").squeeze(S("a-z")))
end
def test_squeeze!
a = S("aaabbbbccc")
b = a.dup
assert_equal(S("abc"), a.squeeze!)
assert_equal(S("abc"), a)
assert_equal(S("aaabbbbccc"), b)
a = S("aa bb cc")
assert_equal(S("aa bb cc"), a.squeeze!(S(" ")))
assert_equal(S("aa bb cc"), a)
a = S("BxxxTyyyWzzzzz")
assert_equal(S("BxTyWz"), a.squeeze!(S("a-z")))
assert_equal(S("BxTyWz"), a)
a=S("The quick brown fox")
assert_nil(a.squeeze!)
end
def test_start_with?
assert_send([S("hello"), :start_with?, S("hel")])
assert_not_send([S("hello"), :start_with?, S("el")])
assert_send([S("hello"), :start_with?, S("el"), S("he")])
bug5536 = '[ruby-core:40623]'
assert_raise(TypeError, bug5536) {S("str").start_with? :not_convertible_to_string}
end
def test_strip
assert_equal(S("x"), S(" x ").strip)
assert_equal(S("x"), S(" \n\r\t x \t\r\n\n ").strip)
assert_equal("0b0 ".force_encoding("UTF-16BE"),
"\x00 0b0 ".force_encoding("UTF-16BE").strip)
assert_equal("0\x000b0 ".force_encoding("UTF-16BE"),
"0\x000b0 ".force_encoding("UTF-16BE").strip)
end
def test_strip!
a = S(" x ")
b = a.dup
assert_equal(S("x") ,a.strip!)
assert_equal(S("x") ,a)
assert_equal(S(" x "), b)
a = S(" \n\r\t x \t\r\n\n ")
assert_equal(S("x"), a.strip!)
assert_equal(S("x"), a)
a = S("x")
assert_nil(a.strip!)
assert_equal(S("x") ,a)
end
def test_sub
assert_equal(S("h*llo"), S("hello").sub(/[aeiou]/, S('*')))
assert_equal(S("h<e>llo"), S("hello").sub(/([aeiou])/, S('<\1>')))
assert_equal(S("h ello"), S("hello").sub(/./) {
|s| s[0].to_s + S(' ')})
assert_equal(S("HELL-o"), S("hello").sub(/(hell)(.)/) {
|s| $1.upcase + S('-') + $2
})
assert_equal(S("a\\aba"), S("ababa").sub(/b/, '\\'))
assert_equal(S("ab\\aba"), S("ababa").sub(/(b)/, '\1\\'))
assert_equal(S("ababa"), S("ababa").sub(/(b)/, '\1'))
assert_equal(S("ababa"), S("ababa").sub(/(b)/, '\\1'))
assert_equal(S("a\\1aba"), S("ababa").sub(/(b)/, '\\\1'))
assert_equal(S("a\\1aba"), S("ababa").sub(/(b)/, '\\\\1'))
assert_equal(S("a\\baba"), S("ababa").sub(/(b)/, '\\\\\1'))
assert_equal(S("a--ababababababababab"),
S("abababababababababab").sub(/(b)/, '-\9-'))
assert_equal(S("1-b-0"),
S("1b2b3b4b5b6b7b8b9b0").
sub(/(b).(b).(b).(b).(b).(b).(b).(b).(b)/, '-\9-'))
assert_equal(S("1-b-0"),
S("1b2b3b4b5b6b7b8b9b0").
sub(/(b).(b).(b).(b).(b).(b).(b).(b).(b)/, '-\\9-'))
assert_equal(S("1-\\9-0"),
S("1b2b3b4b5b6b7b8b9b0").
sub(/(b).(b).(b).(b).(b).(b).(b).(b).(b)/, '-\\\9-'))
assert_equal(S("k"),
S("1a2b3c4d5e6f7g8h9iAjBk").
sub(/.(.).(.).(.).(.).(.).(.).(.).(.).(.).(.).(.)/, '\+'))
assert_equal(S("ab\\aba"), S("ababa").sub(/b/, '\&\\'))
assert_equal(S("ababa"), S("ababa").sub(/b/, '\&'))
assert_equal(S("ababa"), S("ababa").sub(/b/, '\\&'))
assert_equal(S("a\\&aba"), S("ababa").sub(/b/, '\\\&'))
assert_equal(S("a\\&aba"), S("ababa").sub(/b/, '\\\\&'))
assert_equal(S("a\\baba"), S("ababa").sub(/b/, '\\\\\&'))
a = S("hello")
a.taint
x = a.sub(/./, S('X'))
assert(x.tainted?)
o = Object.new
def o.to_str; "bar"; end
assert_equal("fooBARbaz", "foobarbaz".sub(o, "BAR"))
assert_raise(TypeError) { "foo".sub(Object.new, "") }
assert_raise(ArgumentError) { "foo".sub }
assert_raise(IndexError) { "foo"[/(?:(o$)|(x))/, 2] = 'bar' }
o = Object.new
def o.to_s; self; end
assert_match(/^foo#<Object:0x.*>baz$/, "foobarbaz".sub("bar") { o })
end
def test_sub!
a = S("hello")
b = a.dup
a.sub!(/[aeiou]/, S('*'))
assert_equal(S("h*llo"), a)
assert_equal(S("hello"), b)
a = S("hello")
a.sub!(/([aeiou])/, S('<\1>'))
assert_equal(S("h<e>llo"), a)
a = S("hello")
a.sub!(/./) { |s| s[0].to_s + S(' ')}
assert_equal(S("h ello"), a)
a = S("hello")
a.sub!(/(hell)(.)/) { |s| $1.upcase + S('-') + $2 }
assert_equal(S("HELL-o"), a)
a=S("hello")
assert_nil(a.sub!(/X/, S('Y')))
r = S('X')
r.taint
a.sub!(/./, r)
assert(a.tainted?)
end
def test_succ
assert_equal(S("abd"), S("abc").succ)
assert_equal(S("z"), S("y").succ)
assert_equal(S("aaa"), S("zz").succ)
assert_equal(S("124"), S("123").succ)
assert_equal(S("1000"), S("999").succ)
assert_equal(S("2.000"), S("1.999").succ)
assert_equal(S("No.10"), S("No.9").succ)
assert_equal(S("2000aaa"), S("1999zzz").succ)
assert_equal(S("AAAAA000"), S("ZZZZ999").succ)
assert_equal(S("*+"), S("**").succ)
assert_equal("abce", "abcd".succ)
assert_equal("THX1139", "THX1138".succ)
assert_equal("<\<koalb>>", "<\<koala>>".succ)
assert_equal("2000aaa", "1999zzz".succ)
assert_equal("AAAA0000", "ZZZ9999".succ)
assert_equal("**+", "***".succ)
end
def test_succ!
a = S("abc")
b = a.dup
assert_equal(S("abd"), a.succ!)
assert_equal(S("abd"), a)
assert_equal(S("abc"), b)
a = S("y")
assert_equal(S("z"), a.succ!)
assert_equal(S("z"), a)
a = S("zz")
assert_equal(S("aaa"), a.succ!)
assert_equal(S("aaa"), a)
a = S("123")
assert_equal(S("124"), a.succ!)
assert_equal(S("124"), a)
a = S("999")
assert_equal(S("1000"), a.succ!)
assert_equal(S("1000"), a)
a = S("1999zzz")
assert_equal(S("2000aaa"), a.succ!)
assert_equal(S("2000aaa"), a)
a = S("ZZZZ999")
assert_equal(S("AAAAA000"), a.succ!)
assert_equal(S("AAAAA000"), a)
a = S("**")
assert_equal(S("*+"), a.succ!)
assert_equal(S("*+"), a)
a = S("No.9")
assert_equal(S("No.10"), a.succ!)
assert_equal(S("No.10"), a)
assert_equal("aaaaaaaaaaaa", "zzzzzzzzzzz".succ!)
assert_equal("aaaaaaaaaaaaaaaaaaaaaaaa", "zzzzzzzzzzzzzzzzzzzzzzz".succ!)
end
def test_sum
n = S("\001\001\001\001\001\001\001\001\001\001\001\001\001\001\001")
assert_equal(15, n.sum)
n += S("\001")
assert_equal(16, n.sum(17))
n[0] = 2.chr
assert(15 != n.sum)
end
def check_sum(str, bits=16)
sum = 0
str.each_byte {|c| sum += c}
sum = sum & ((1 << bits) - 1) if bits != 0
assert_equal(sum, str.sum(bits))
end
def test_sum_2
assert_equal(0, "".sum)
assert_equal(294, "abc".sum)
check_sum("abc")
check_sum("\x80")
0.upto(70) {|bits|
check_sum("xyz", bits)
}
end
def test_sum_long
s8421505 = "\xff" * 8421505
assert_equal(127, s8421505.sum(31))
assert_equal(2147483775, s8421505.sum(0))
s16843010 = ("\xff" * 16843010)
assert_equal(254, s16843010.sum(32))
assert_equal(4294967550, s16843010.sum(0))
end
def test_swapcase
assert_equal(S("hi&LOW"), S("HI&low").swapcase)
end
def test_swapcase!
a = S("hi&LOW")
b = a.dup
assert_equal(S("HI&low"), a.swapcase!)
assert_equal(S("HI&low"), a)
assert_equal(S("hi&LOW"), b)
a = S("$^#^%$#!!")
assert_nil(a.swapcase!)
assert_equal(S("$^#^%$#!!"), a)
end
def test_to_f
assert_equal(344.3, S("344.3").to_f)
assert_equal(5.9742e24, S("5.9742e24").to_f)
assert_equal(98.6, S("98.6 degrees").to_f)
assert_equal(0.0, S("degrees 100.0").to_f)
assert_equal([ 0.0].pack('G'), [S(" 0.0").to_f].pack('G'))
assert_equal([-0.0].pack('G'), [S("-0.0").to_f].pack('G'))
end
def test_to_i
assert_equal(1480, S("1480ft/sec").to_i)
assert_equal(0, S("speed of sound in water @20C = 1480ft/sec)").to_i)
assert_equal(0, " 0".to_i)
assert_equal(0, "+0".to_i)
assert_equal(0, "-0".to_i)
assert_equal(0, "--0".to_i)
assert_equal(16, "0x10".to_i(0))
assert_equal(16, "0X10".to_i(0))
assert_equal(2, "0b10".to_i(0))
assert_equal(2, "0B10".to_i(0))
assert_equal(8, "0o10".to_i(0))
assert_equal(8, "0O10".to_i(0))
assert_equal(10, "0d10".to_i(0))
assert_equal(10, "0D10".to_i(0))
assert_equal(8, "010".to_i(0))
assert_raise(ArgumentError) { "010".to_i(-10) }
2.upto(36) {|radix|
assert_equal(radix, "10".to_i(radix))
assert_equal(radix**2, "100".to_i(radix))
}
assert_raise(ArgumentError) { "0".to_i(1) }
assert_raise(ArgumentError) { "0".to_i(37) }
assert_equal(0, "z".to_i(10))
assert_equal(12, "1_2".to_i(10))
assert_equal(0x40000000, "1073741824".to_i(10))
assert_equal(0x4000000000000000, "4611686018427387904".to_i(10))
assert_equal(1, "1__2".to_i(10))
assert_equal(1, "1_z".to_i(10))
bug6192 = '[ruby-core:43566]'
assert_raise(Encoding::CompatibilityError, bug6192) {"0".encode("utf-16be").to_i}
assert_raise(Encoding::CompatibilityError, bug6192) {"0".encode("utf-16le").to_i}
assert_raise(Encoding::CompatibilityError, bug6192) {"0".encode("utf-32be").to_i}
assert_raise(Encoding::CompatibilityError, bug6192) {"0".encode("utf-32le").to_i}
assert_raise(Encoding::CompatibilityError, bug6192) {"0".encode("iso-2022-jp").to_i}
end
def test_to_s
a = S("me")
assert_equal("me", a.to_s)
assert_equal(a.__id__, a.to_s.__id__) if @cls == String
end
def test_to_str
a = S("me")
assert_equal("me", a.to_s)
assert_equal(a.__id__, a.to_s.__id__) if @cls == String
o = Object.new
def o.to_str
"at"
end
assert_equal("meat", a.concat(o))
o = Object.new
def o.to_str
foo_bar()
end
assert_match(/foo_bar/, assert_raise(NoMethodError) {a.concat(o)}.message)
end
def test_tr
assert_equal(S("hippo"), S("hello").tr(S("el"), S("ip")))
assert_equal(S("*e**o"), S("hello").tr(S("^aeiou"), S("*")))
assert_equal(S("hal"), S("ibm").tr(S("b-z"), S("a-z")))
a = "abc".force_encoding(Encoding::US_ASCII)
assert_equal(Encoding::US_ASCII, a.tr(S("z"), S("\u0101")).encoding, '[ruby-core:22326]')
assert_equal("a".hash, "a".tr("a", "\u0101").tr("\u0101", "a").hash, '[ruby-core:22328]')
assert_equal(true, "\u0101".tr("\u0101", "a").ascii_only?)
assert_equal(true, "\u3041".tr("\u3041", "a").ascii_only?)
assert_equal(false, "\u3041\u3042".tr("\u3041", "a").ascii_only?)
bug6156 = '[ruby-core:43335]'
str, range, star = %w[b a-z *].map{|s|s.encode("utf-16le")}
assert_equal(star, str.tr(range, star), bug6156)
end
def test_tr!
a = S("hello")
b = a.dup
assert_equal(S("hippo"), a.tr!(S("el"), S("ip")))
assert_equal(S("hippo"), a)
assert_equal(S("hello"),b)
a = S("hello")
assert_equal(S("*e**o"), a.tr!(S("^aeiou"), S("*")))
assert_equal(S("*e**o"), a)
a = S("IBM")
assert_equal(S("HAL"), a.tr!(S("B-Z"), S("A-Z")))
assert_equal(S("HAL"), a)
a = S("ibm")
assert_nil(a.tr!(S("B-Z"), S("A-Z")))
assert_equal(S("ibm"), a)
a = "abc".force_encoding(Encoding::US_ASCII)
assert_nil(a.tr!(S("z"), S("\u0101")), '[ruby-core:22326]')
assert_equal(Encoding::US_ASCII, a.encoding, '[ruby-core:22326]')
end
def test_tr_s
assert_equal(S("hypo"), S("hello").tr_s(S("el"), S("yp")))
assert_equal(S("h*o"), S("hello").tr_s(S("el"), S("*")))
assert_equal("a".hash, "\u0101\u0101".tr_s("\u0101", "a").hash)
assert_equal(true, "\u3041\u3041".tr("\u3041", "a").ascii_only?)
end
def test_tr_s!
a = S("hello")
b = a.dup
assert_equal(S("hypo"), a.tr_s!(S("el"), S("yp")))
assert_equal(S("hypo"), a)
assert_equal(S("hello"), b)
a = S("hello")
assert_equal(S("h*o"), a.tr_s!(S("el"), S("*")))
assert_equal(S("h*o"), a)
end
def test_unpack
a = [S("cat"), S("wom"), S("x"), S("yy")]
assert_equal(a, S("catwomx yy ").unpack(S("A3A3A3A3")))
assert_equal([S("cat")], S("cat \000\000").unpack(S("A*")))
assert_equal([S("cwx"), S("wx"), S("x"), S("yy")],
S("cwx yy ").unpack(S("A3@1A3@2A3A3")))
assert_equal([S("cat"), S("wom"), S("x\000\000"), S("yy\000")],
S("catwomx\000\000yy\000").unpack(S("a3a3a3a3")))
assert_equal([S("cat \000\000")], S("cat \000\000").unpack(S("a*")))
assert_equal([S("ca")], S("catdog").unpack(S("a2")))
assert_equal([S("cat\000\000")],
S("cat\000\000\000\000\000dog").unpack(S("a5")))
assert_equal([S("01100001")], S("\x61").unpack(S("B8")))
assert_equal([S("01100001")], S("\x61").unpack(S("B*")))
assert_equal([S("0110000100110111")], S("\x61\x37").unpack(S("B16")))
assert_equal([S("01100001"), S("00110111")], S("\x61\x37").unpack(S("B8B8")))
assert_equal([S("0110")], S("\x60").unpack(S("B4")))
assert_equal([S("01")], S("\x40").unpack(S("B2")))
assert_equal([S("01100001")], S("\x86").unpack(S("b8")))
assert_equal([S("01100001")], S("\x86").unpack(S("b*")))
assert_equal([S("0110000100110111")], S("\x86\xec").unpack(S("b16")))
assert_equal([S("01100001"), S("00110111")], S("\x86\xec").unpack(S("b8b8")))
assert_equal([S("0110")], S("\x06").unpack(S("b4")))
assert_equal([S("01")], S("\x02").unpack(S("b2")))
assert_equal([ 65, 66, 67 ], S("ABC").unpack(S("C3")))
assert_equal([ 255, 66, 67 ], S("\377BC").unpack("C*"))
assert_equal([ 65, 66, 67 ], S("ABC").unpack("c3"))
assert_equal([ -1, 66, 67 ], S("\377BC").unpack("c*"))
assert_equal([S("4142"), S("0a"), S("1")], S("AB\n\x10").unpack(S("H4H2H1")))
assert_equal([S("1424"), S("a0"), S("2")], S("AB\n\x02").unpack(S("h4h2h1")))
assert_equal([S("abc\002defcat\001"), S(""), S("")],
S("abc=02def=\ncat=\n=01=\n").unpack(S("M9M3M4")))
assert_equal([S("hello\n")], S("aGVsbG8K\n").unpack(S("m")))
assert_equal([S("hello\nhello\n")], S(",:&5L;&\\*:&5L;&\\*\n").unpack(S("u")))
assert_equal([0xa9, 0x42, 0x2260], S("\xc2\xa9B\xe2\x89\xa0").unpack(S("U*")))
=begin
skipping "Not tested:
D,d & double-precision float, native format\\
E & double-precision float, little-endian byte order\\
e & single-precision float, little-endian byte order\\
F,f & single-precision float, native format\\
G & double-precision float, network (big-endian) byte order\\
g & single-precision float, network (big-endian) byte order\\
I & unsigned integer\\
i & integer\\
L & unsigned long\\
l & long\\
m & string encoded in base64 (uuencoded)\\
N & long, network (big-endian) byte order\\
n & short, network (big-endian) byte-order\\
P & pointer to a structure (fixed-length string)\\
p & pointer to a null-terminated string\\
S & unsigned short\\
s & short\\
V & long, little-endian byte order\\
v & short, little-endian byte order\\
X & back up a byte\\
x & null byte\\
Z & ASCII string (null padded, count is width)\\
"
=end
end
def test_upcase
assert_equal(S("HELLO"), S("hello").upcase)
assert_equal(S("HELLO"), S("hello").upcase)
assert_equal(S("HELLO"), S("HELLO").upcase)
assert_equal(S("ABC HELLO 123"), S("abc HELLO 123").upcase)
end
def test_upcase!
a = S("hello")
b = a.dup
assert_equal(S("HELLO"), a.upcase!)
assert_equal(S("HELLO"), a)
assert_equal(S("hello"), b)
a = S("HELLO")
assert_nil(a.upcase!)
assert_equal(S("HELLO"), a)
end
def test_upto
a = S("aa")
start = S("aa")
count = 0
assert_equal(S("aa"), a.upto(S("zz")) {|s|
assert_equal(start, s)
start.succ!
count += 1
})
assert_equal(676, count)
end
def test_upto_numeric
a = S("00")
start = S("00")
count = 0
assert_equal(S("00"), a.upto(S("23")) {|s|
assert_equal(start, s, "[ruby-dev:39361]")
assert_equal(Encoding::US_ASCII, s.encoding)
start.succ!
count += 1
})
assert_equal(24, count, "[ruby-dev:39361]")
end
def test_upto_nonalnum
first = S("\u3041")
last = S("\u3093")
count = 0
assert_equal(first, first.upto(last) {|s|
count += 1
s.replace(last)
})
assert_equal(83, count, "[ruby-dev:39626]")
end
def test_mod_check
assert_raise(RuntimeError) {
s = ""
s.sub!(/\A/) { s.replace "z" * 2000; "zzz" }
}
end
def test_frozen_check
assert_raise(RuntimeError) {
s = ""
s.sub!(/\A/) { s.freeze; "zzz" }
}
end
class S2 < String
end
def test_str_new4
s = (0..54).to_a.join # length = 100
s2 = S2.new(s[10,90])
s3 = s2[10,80]
assert_equal((10..54).to_a.to_a.join, s2)
assert_equal((15..54).to_a.to_a.join, s3)
end
def test_rb_str_new4
s = "a" * 100
s2 = s[10,90]
assert_equal("a" * 90, s2)
s3 = s2[10,80]
assert_equal("a" * 80, s3)
end
class StringLike
def initialize(str)
@str = str
end
def to_str
@str
end
end
def test_rb_str_to_str
assert_equal("ab", "a" + StringLike.new("b"))
end
def test_rb_str_shared_replace
s = "a" * 100
s.succ!
assert_equal("a" * 99 + "b", s)
s = ""
s.succ!
assert_equal("", s)
end
def test_times
assert_raise(ArgumentError) { "a" * (-1) }
end
def test_splice!
l = S("1234\n234\n34\n4\n")
assert_equal(S("1234\n"), l.slice!(/\A.*\n/), "[ruby-dev:31665]")
assert_equal(S("234\n"), l.slice!(/\A.*\n/), "[ruby-dev:31665]")
assert_equal(S("34\n"), l.slice!(/\A.*\n/), "[ruby-dev:31665]")
assert_equal(S("4\n"), l.slice!(/\A.*\n/), "[ruby-dev:31665]")
assert_nil(l.slice!(/\A.*\n/), "[ruby-dev:31665]")
end
def test_times2
s1 = ''
100.times {|n|
s2 = "a" * n
assert_equal(s1, s2)
s1 << 'a'
}
assert_raise(ArgumentError) { "foo" * (-1) }
end
def test_respond_to
o = Object.new
def o.respond_to?(arg) [:to_str].include?(arg) ? nil : super end
def o.to_str() "" end
def o.==(other) "" == other end
assert_equal(false, "" == o)
end
def test_match_method
assert_equal("bar", "foobarbaz".match(/bar/).to_s)
o = Regexp.new('foo')
def o.match(x, y, z); x + y + z; end
assert_equal("foobarbaz", "foo".match(o, "bar", "baz"))
x = nil
"foo".match(o, "bar", "baz") {|y| x = y }
assert_equal("foobarbaz", x)
assert_raise(ArgumentError) { "foo".match }
end
def test_clear
s = "foo" * 100
s.clear
assert_equal("", s)
end
def test_to_s_2
c = Class.new(String)
s = c.new
s.replace("foo")
assert_equal("foo", s.to_s)
assert_instance_of(String, s.to_s)
end
def test_inspect_nul
bug8290 = '[ruby-core:54458]'
s = "\0" + "12"
assert_equal '"\u000012"', s.inspect, bug8290
s = "\0".b + "12"
assert_equal '"\x0012"', s.inspect, bug8290
end
def test_partition
assert_equal(%w(he l lo), "hello".partition(/l/))
assert_equal(%w(he l lo), "hello".partition("l"))
assert_raise(TypeError) { "hello".partition(1) }
def (hyphen = Object.new).to_str; "-"; end
assert_equal(%w(foo - bar), "foo-bar".partition(hyphen), '[ruby-core:23540]')
bug6206 = '[ruby-dev:45441]'
Encoding.list.each do |enc|
next unless enc.ascii_compatible?
s = S("a:".force_encoding(enc))
assert_equal([enc]*3, s.partition("|").map(&:encoding), bug6206)
end
assert_equal(["\u30E6\u30FC\u30B6", "@", "\u30C9\u30E1.\u30A4\u30F3"],
"\u30E6\u30FC\u30B6@\u30C9\u30E1.\u30A4\u30F3".partition(/[@.]/))
end
def test_rpartition
assert_equal(%w(hel l o), "hello".rpartition(/l/))
assert_equal(%w(hel l o), "hello".rpartition("l"))
assert_raise(TypeError) { "hello".rpartition(1) }
def (hyphen = Object.new).to_str; "-"; end
assert_equal(%w(foo - bar), "foo-bar".rpartition(hyphen), '[ruby-core:23540]')
bug6206 = '[ruby-dev:45441]'
Encoding.list.each do |enc|
next unless enc.ascii_compatible?
s = S("a:".force_encoding(enc))
assert_equal([enc]*3, s.rpartition("|").map(&:encoding), bug6206)
end
bug8138 = '[ruby-dev:47183]'
assert_equal(["\u30E6\u30FC\u30B6@\u30C9\u30E1", ".", "\u30A4\u30F3"],
"\u30E6\u30FC\u30B6@\u30C9\u30E1.\u30A4\u30F3".rpartition(/[@.]/), bug8138)
end
def test_setter
assert_raise(TypeError) { $/ = 1 }
end
def test_to_id
c = Class.new
c.class_eval do
def initialize
@foo = :foo
end
end
assert_raise(TypeError) do
c.class_eval { attr 1 }
end
o = Object.new
def o.to_str; :foo; end
assert_raise(TypeError) do
c.class_eval { attr 1 }
end
class << o;remove_method :to_str;end
def o.to_str; "foo"; end
assert_nothing_raised do
c.class_eval { attr o }
end
assert_equal(:foo, c.new.foo)
end
def test_gsub_enumerator
assert_normal_exit %q{"abc".gsub(/./).next}, "[ruby-dev:34828]"
end
def test_clear_nonasciicompat
assert_equal("", "\u3042".encode("ISO-2022-JP").clear)
end
def test_try_convert
assert_equal(nil, String.try_convert(1))
assert_equal("foo", String.try_convert("foo"))
end
def test_substr_negative_begin
assert_equal("\u3042", ("\u3042" * 100)[-1])
end
=begin
def test_compare_different_encoding_string
s1 = "\xff".force_encoding("UTF-8")
s2 = "\xff".force_encoding("ISO-2022-JP")
assert_equal([-1, 1], [s1 <=> s2, s2 <=> s1].sort)
end
=end
def test_casecmp
assert_equal(1, "\u3042B".casecmp("\u3042a"))
end
def test_upcase2
assert_equal("\u3042AB", "\u3042aB".upcase)
end
def test_downcase2
assert_equal("\u3042ab", "\u3042aB".downcase)
end
def test_rstrip
assert_equal("\u3042", "\u3042 ".rstrip)
assert_raise(Encoding::CompatibilityError) { "\u3042".encode("ISO-2022-JP").rstrip }
end
=begin
def test_symbol_table_overflow
assert_in_out_err([], <<-INPUT, [], /symbol table overflow \(symbol [a-z]{8}\) \(RuntimeError\)/)
("aaaaaaaa".."zzzzzzzz").each {|s| s.to_sym }
INPUT
end
=end
def test_shared_force_encoding
s = "\u{3066}\u{3059}\u{3068}".gsub(//, '')
h = {}
h[s] = nil
k = h.keys[0]
assert_equal(s, k, '[ruby-dev:39068]')
assert_equal(Encoding::UTF_8, k.encoding, '[ruby-dev:39068]')
s.dup.force_encoding(Encoding::ASCII_8BIT).gsub(//, '')
k = h.keys[0]
assert_equal(s, k, '[ruby-dev:39068]')
assert_equal(Encoding::UTF_8, k.encoding, '[ruby-dev:39068]')
end
def test_ascii_incomat_inspect
bug4081 = '[ruby-core:33283]'
[Encoding::UTF_16LE, Encoding::UTF_16BE,
Encoding::UTF_32LE, Encoding::UTF_32BE].each do |e|
assert_equal('"abc"', "abc".encode(e).inspect)
assert_equal('"\\u3042\\u3044\\u3046"', "\u3042\u3044\u3046".encode(e).inspect)
assert_equal('"ab\\"c"', "ab\"c".encode(e).inspect, bug4081)
end
begin
verbose, $VERBOSE = $VERBOSE, nil
ext = Encoding.default_external
Encoding.default_external = "us-ascii"
$VERBOSE = verbose
i = "abc\"\\".force_encoding("utf-8").inspect
ensure
$VERBOSE = nil
Encoding.default_external = ext
$VERBOSE = verbose
end
assert_equal('"abc\\"\\\\"', i, bug4081)
end
def test_dummy_inspect
assert_equal('"\e\x24\x42\x22\x4C\x22\x68\e\x28\x42"',
"\u{ffe2}\u{2235}".encode("cp50220").inspect)
end
def test_prepend
assert_equal(S("hello world!"), "world!".prepend("hello "))
foo = Object.new
def foo.to_str
"b"
end
assert_equal(S("ba"), "a".prepend(foo))
a = S("world")
b = S("hello ")
a.prepend(b)
assert_equal(S("hello world"), a)
assert_equal(S("hello "), b)
end
def u(str)
str.force_encoding(Encoding::UTF_8)
end
def test_byteslice
assert_equal("h", "hello".byteslice(0))
assert_equal(nil, "hello".byteslice(5))
assert_equal("o", "hello".byteslice(-1))
assert_equal(nil, "hello".byteslice(-6))
assert_equal("", "hello".byteslice(0, 0))
assert_equal("hello", "hello".byteslice(0, 6))
assert_equal("hello", "hello".byteslice(0, 6))
assert_equal("", "hello".byteslice(5, 1))
assert_equal("o", "hello".byteslice(-1, 6))
assert_equal(nil, "hello".byteslice(-6, 1))
assert_equal(nil, "hello".byteslice(0, -1))
assert_equal("h", "hello".byteslice(0..0))
assert_equal("", "hello".byteslice(5..0))
assert_equal("o", "hello".byteslice(4..5))
assert_equal(nil, "hello".byteslice(6..0))
assert_equal("", "hello".byteslice(-1..0))
assert_equal("llo", "hello".byteslice(-3..5))
assert_equal(u("\x81"), "\u3042".byteslice(1))
assert_equal(u("\x81\x82"), "\u3042".byteslice(1, 2))
assert_equal(u("\x81\x82"), "\u3042".byteslice(1..2))
assert_equal(u("\x82")+("\u3042"*9), ("\u3042"*10).byteslice(2, 28))
bug7954 = '[ruby-dev:47108]'
assert_equal(false, "\u3042".byteslice(0, 2).valid_encoding?, bug7954)
assert_equal(false, ("\u3042"*10).byteslice(0, 20).valid_encoding?, bug7954)
end
def test_unknown_string_option
str = nil
assert_nothing_raised(SyntaxError) do
eval(%{
str = begin"hello"end
})
end
assert_equal "hello", str
assert_not_predicate str, :frozen?
end
def test_frozen_string
assert_equal "hello", "hello"f
assert_predicate "hello"f, :frozen?
f = -> { "hello"f }
assert_equal f.call.object_id, f.call.object_id
end
def test_frozen_dstring
assert_equal "hello123", "hello#{123}"f
assert_predicate "hello#{123}"f, :frozen?
i = 0
f = -> { "#{i += 1}"f }
assert_equal "1", f.call
assert_equal "2", f.call
end
def test_frozen_string_adjacent
str = nil
assert_nothing_raised(SyntaxError) do
eval(%{
str = "hello" "world"f
})
end
assert_equal "helloworld", str
assert_predicate str, :frozen?
end
def test_frozen_string_cannot_be_adjacent
assert_raise(SyntaxError) do
eval(%{
"hello"f "world"
})
end
end
def test_frozen_strings_are_deduplicated
a = "hello"f
b = "hello"f
assert_equal a.object_id, b.object_id
end
def test_frozen_strings_are_deduplicated_with_encoding
a = eval("# coding: utf-8\n'hello'f")
b = eval("# coding: ascii\n'hello'f")
assert_equal Encoding::UTF_8, a.encoding
assert_equal Encoding::US_ASCII, b.encoding
end
def test_eq_tilde_can_be_overridden
assert_separately([], <<-RUBY)
class String
undef =~
def =~(str)
"foo"
end
end
assert_equal("foo", "" =~ //)
RUBY
end
end
class TestString2 < TestString
def initialize(*args)
super
@cls = S2
end
end
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