64 lines
1.3 KiB
CoffeeScript
64 lines
1.3 KiB
CoffeeScript
# Regular Expression Literals
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# ---------------------------
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# TODO: add method invocation tests: /regex/.toString()
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# * Regexen
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# * Heregexen
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test "basic regular expression literals", ->
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ok 'a'.match(/a/)
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ok 'a'.match /a/
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ok 'a'.match(/a/g)
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ok 'a'.match /a/g
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test "division is not confused for a regular expression", ->
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eq 2, 4 / 2 / 1
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a = 4
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b = 2
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g = 1
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eq 2, a / b/g
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a = 10
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b = a /= 4 / 2
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eq a, 5
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obj = method: -> 2
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two = 2
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eq 2, (obj.method()/two + obj.method()/two)
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i = 1
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eq 2, (4)/2/i
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eq 1, i/i/i
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test "#764: regular expressions should be indexable", ->
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eq /0/['source'], ///#{0}///['source']
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test "#584: slashes are allowed unescaped in character classes", ->
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ok /^a\/[/]b$/.test 'a//b'
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test "#1724: regular expressions beginning with `*`", ->
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throws -> CoffeeScript.compile '/*/'
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# Heregexe(n|s)
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test "a heregex will ignore whitespace and comments", ->
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eq /^I'm\x20+[a]\s+Heregex?\/\/\//gim + '', ///
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^ I'm \x20+ [a] \s+
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Heregex? / // # or not
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///gim + ''
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test "an empty heregex will compile to an empty, non-capturing group", ->
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eq /(?:)/ + '', /// /// + ''
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test "#1724: regular expressions beginning with `*`", ->
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throws -> CoffeeScript.compile '/// * ///'
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test "empty regular expressions with flags", ->
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fn = (x) -> x
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a = "" + //i
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fn ""
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eq '/(?:)/i', a
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