89 lines
2.3 KiB
CoffeeScript
89 lines
2.3 KiB
CoffeeScript
# Range Literals
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# --------------
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# TODO: add indexing and method invocation tests: [1..4][0] is 1, [0...3].toString()
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# shared array
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shared = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
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test "basic inclusive ranges", ->
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arrayEq [1, 2, 3] , [1..3]
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arrayEq [0, 1, 2] , [0..2]
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arrayEq [0, 1] , [0..1]
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arrayEq [0] , [0..0]
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arrayEq [-1] , [-1..-1]
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arrayEq [-1, 0] , [-1..0]
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arrayEq [-1, 0, 1], [-1..1]
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test "basic exclusive ranges", ->
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arrayEq [1, 2, 3] , [1...4]
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arrayEq [0, 1, 2] , [0...3]
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arrayEq [0, 1] , [0...2]
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arrayEq [0] , [0...1]
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arrayEq [-1] , [-1...0]
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arrayEq [-1, 0] , [-1...1]
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arrayEq [-1, 0, 1], [-1...2]
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arrayEq [], [1...1]
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arrayEq [], [0...0]
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arrayEq [], [-1...-1]
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test "downward ranges", ->
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arrayEq shared, [9..0].reverse()
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arrayEq [5, 4, 3, 2] , [5..2]
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arrayEq [2, 1, 0, -1], [2..-1]
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arrayEq [3, 2, 1] , [3..1]
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arrayEq [2, 1, 0] , [2..0]
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arrayEq [1, 0] , [1..0]
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arrayEq [0] , [0..0]
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arrayEq [-1] , [-1..-1]
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arrayEq [0, -1] , [0..-1]
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arrayEq [1, 0, -1] , [1..-1]
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arrayEq [0, -1, -2], [0..-2]
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arrayEq [4, 3, 2], [4...1]
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arrayEq [3, 2, 1], [3...0]
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arrayEq [2, 1] , [2...0]
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arrayEq [1] , [1...0]
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arrayEq [] , [0...0]
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arrayEq [] , [-1...-1]
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arrayEq [0] , [0...-1]
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arrayEq [0, -1] , [0...-2]
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arrayEq [1, 0] , [1...-1]
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arrayEq [2, 1, 0], [2...-1]
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test "ranges with variables as enpoints", ->
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[a, b] = [1, 3]
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arrayEq [1, 2, 3], [a..b]
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arrayEq [1, 2] , [a...b]
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b = -2
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arrayEq [1, 0, -1, -2], [a..b]
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arrayEq [1, 0, -1] , [a...b]
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test "ranges with expressions as endpoints", ->
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[a, b] = [1, 3]
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arrayEq [2, 3, 4, 5, 6], [(a+1)..2*b]
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arrayEq [2, 3, 4, 5] , [(a+1)...2*b]
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test "large ranges are generated with looping constructs", ->
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down = [99..0]
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eq 100, (len = down.length)
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eq 0, down[len - 1]
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up = [0...100]
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eq 100, (len = up.length)
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eq 99, up[len - 1]
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test "#1012 slices with arguments object", ->
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expected = [0..9]
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argsAtStart = (-> [arguments[0]..9]) 0
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arrayEq expected, argsAtStart
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argsAtEnd = (-> [0..arguments[0]]) 9
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arrayEq expected, argsAtEnd
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argsAtBoth = (-> [arguments[0]..arguments[1]]) 0, 9
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arrayEq expected, argsAtBoth
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test "#1409: creating large ranges outside of a function body", ->
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CoffeeScript.eval '[0..100]'
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