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require 'test/unit'
class TestStringchar < Test::Unit::TestCase
def test_string
assert_equal("abcd", "abcd")
assert_match(/abcd/, "abcd")
assert("abcd" === "abcd")
# compile time string concatenation
assert_equal("abcd", "ab" "cd")
assert_equal("22aacd44", "#{22}aa" "cd#{44}")
assert_equal("22aacd445566", "#{22}aa" "cd#{44}" "55" "#{66}")
assert("abc" !~ /^$/)
assert("abc\n" !~ /^$/)
assert("abc" !~ /^d*$/)
assert_equal(3, ("abc" =~ /d*$/))
assert("" =~ /^$/)
assert("\n" =~ /^$/)
assert("a\n\n" =~ /^$/)
assert("abcabc" =~ /.*a/); assert_equal("abca", $&)
assert("abcabc" =~ /.*c/); assert_equal("abcabc", $&)
assert("abcabc" =~ /.*?a/); assert_equal("a", $&)
assert("abcabc" =~ /.*?c/); assert_equal("abc", $&)
assert(/(.|\n)*?\n(b|\n)/ =~ "a\nb\n\n"); assert_equal("a\nb", $&)
assert(/^(ab+)+b/ =~ "ababb"); assert_equal("ababb", $&)
assert(/^(?:ab+)+b/ =~ "ababb"); assert_equal("ababb", $&)
assert(/^(ab+)+/ =~ "ababb"); assert_equal("ababb", $&)
assert(/^(?:ab+)+/ =~ "ababb"); assert_equal("ababb", $&)
assert(/(\s+\d+){2}/ =~ " 1 2"); assert_equal(" 1 2", $&)
assert(/(?:\s+\d+){2}/ =~ " 1 2"); assert_equal(" 1 2", $&)
$x = <<END;
ABCD
ABCD
END
$x.gsub!(/((.|\n)*?)B((.|\n)*?)D/){$1+$3}
assert_equal("AC\nAC\n", $x)
assert("foobar" =~ /foo(?=(bar)|(baz))/)
assert("foobaz" =~ /foo(?=(bar)|(baz))/)
$foo = "abc"
assert_equal("abc = abc", "#$foo = abc")
assert_equal("abc = abc", "#{$foo} = abc")
foo = "abc"
assert_equal("abc = abc", "#{foo} = abc")
assert_equal('-----', '-' * 5)
assert_equal('-', '-' * 1)
assert_equal('', '-' * 0)
foo = '-'
assert_equal('-----', foo * 5)
assert_equal('-', foo * 1)
assert_equal('', foo * 0)
$x = "a.gif"
assert_equal("gif", $x.sub(/.*\.([^\.]+)$/, '\1'))
assert_equal("b.gif", $x.sub(/.*\.([^\.]+)$/, 'b.\1'))
assert_equal("", $x.sub(/.*\.([^\.]+)$/, '\2'))
assert_equal("ab", $x.sub(/.*\.([^\.]+)$/, 'a\2b'))
assert_equal("<a.gif>", $x.sub(/.*\.([^\.]+)$/, '<\&>'))
end
def test_char
# character constants(assumes ASCII)
assert_equal(?a, "a"[0])
assert_equal(?a, ?a)
assert_equal("\1", ?\C-a)
assert_equal("\341", ?\M-a)
assert_equal("\201", ?\M-\C-a)
assert_equal(?A, "a".upcase![0])
assert_equal(?a, "A".downcase![0])
assert_equal("ABC", "abc".tr!("a-z", "A-Z"))
assert_equal("ABC", "aabbcccc".tr_s!("a-z", "A-Z"))
assert_equal("abc", "abcc".squeeze!("a-z"))
assert_equal("ad", "abcd".delete!("bc"))
$x = "abcdef"
$y = [ ?a, ?b, ?c, ?d, ?e, ?f ]
$bad = false
$x.each_byte {|i|
if i.chr != $y.shift
$bad = true
break
end
}
assert(!$bad)
s = "a string"
s[0..s.size]="another string"
assert_equal("another string", s)
s = <<EOS
#{
[1,2,3].join(",")
}
EOS
assert_equal("1,2,3\n", s)
assert_equal(926381, "Just".to_i(36))
assert_equal(-23200231779, "-another".to_i(36))
assert_equal("ruby", 1299022.to_s(36))
assert_equal("-hacker", -1045307475.to_s(36))
assert_equal(265419172580680477752431643787347, "Just_another_Ruby_hacker".to_i(36))
assert_equal("-justanotherrubyhacker", -265419172580680477752431643787347.to_s(36))
a = []
(0..255).each {|n|
ch = [n].pack("C")
a.push ch if /a#{Regexp.quote ch}b/x =~ "ab"
}
assert_equal(0, a.size)
end
def test_bang
s = "aBc"
s.upcase
assert_equal("aBc", s)
s.upcase!
assert_equal("ABC", s)
s = "aBc"
s.downcase
assert_equal("aBc", s)
s.downcase!
assert_equal("abc", s)
s = "aBc"
s.swapcase
assert_equal("aBc", s)
s.swapcase!
assert_equal("AbC", s)
s = "aBc"
s.capitalize
assert_equal("aBc", s)
s.capitalize!
assert_equal("Abc", s)
s = "aBc"
s.tr("a-z", "A-Z")
assert_equal("aBc", s)
s.tr!("a-z", "A-Z")
assert_equal("ABC", s)
s = "aaBBcc"
s.tr_s("a-z", "A-Z")
assert_equal("aaBBcc", s)
s.tr_s!("a-z", "A-Z")
assert_equal("ABBC", s)
s = "aaBBcc"
s.squeeze("a-z")
assert_equal("aaBBcc", s)
s.squeeze!("a-z")
assert_equal("aBBc", s)
s = "aaBBcc"
s.delete("a-z")
assert_equal("aaBBcc", s)
s.delete!("a-z")
assert_equal("BB", s)
end
end
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