94 lines
2.3 KiB
CoffeeScript
94 lines
2.3 KiB
CoffeeScript
# Number Literals
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# ---------------
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# * Decimal Integer Literals
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# * Octal Integer Literals
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# * Hexadecimal Integer Literals
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# * Scientific Notation Integer Literals
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# * Scientific Notation Non-Integer Literals
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# * Non-Integer Literals
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# * Binary Integer Literals
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# Binary Integer Literals
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# Binary notation is understood as would be decimal notation.
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test "Parser recognises binary numbers", ->
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eq 4, 0b100
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# Decimal Integer Literals
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test "call methods directly on numbers", ->
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eq 4, 4.valueOf()
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eq '11', 4.toString 3
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eq '1000', 1_000.toString()
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eq -1, 3 -4
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#764: Numbers should be indexable
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eq Number::toString, 42['toString']
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eq Number::toString, 42.toString
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eq Number::toString, 2e308['toString'] # Infinity
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# Non-Integer Literals
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# Decimal number literals.
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value = .25 + .75
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ok value is 1
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value = 0.0 + -.25 - -.75 + 0.0
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ok value is 0.5
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#764: Numbers should be indexable
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eq Number::toString, 4['toString']
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eq Number::toString, 4.2['toString']
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eq Number::toString, .42['toString']
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eq Number::toString, (4)['toString']
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eq Number::toString, 4.toString
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eq Number::toString, 4.2.toString
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eq Number::toString, .42.toString
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eq Number::toString, (4).toString
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test '#1168: leading floating point suppresses newline', ->
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eq 1, do ->
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1
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.5 + 0.5
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test "Python-style octal literal notation '0o777'", ->
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eq 511, 0o777
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eq 1, 0o1
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eq 1, 0o00001
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eq parseInt('0777', 8), 0o777
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eq '777', 0o777.toString 8
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eq 4, 0o4.valueOf()
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eq Number::toString, 0o777['toString']
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eq Number::toString, 0o777.toString
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test "#2060: Disallow uppercase radix prefixes", ->
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for char in ['b', 'o', 'x']
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program = "0#{char}0"
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doesNotThrowCompileError program, bare: yes
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throwsCompileError program.toUpperCase(), bare: yes
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test "#5164: Allow lowercase and uppercase exponent notation", ->
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doesNotThrow -> CoffeeScript.compile "0e0", bare: yes
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doesNotThrow -> CoffeeScript.compile "0E0", bare: yes
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test "#2224: hex literals with 0b or B or E", ->
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eq 176, 0x0b0
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eq 177, 0x0B1
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eq 225, 0xE1
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test "Infinity", ->
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eq Infinity, CoffeeScript.eval "0b#{Array(1024 + 1).join('1')}"
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eq Infinity, CoffeeScript.eval "0o#{Array(342 + 1).join('7')}"
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eq Infinity, CoffeeScript.eval "0x#{Array(256 + 1).join('f')}"
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eq Infinity, CoffeeScript.eval Array(500 + 1).join('9')
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eq Infinity, 2e308
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test "NaN", ->
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ok isNaN 1/NaN
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