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jashkenas--coffeescript/test/arrays.coffee
2011-04-23 13:35:15 -04:00

77 lines
1.4 KiB
CoffeeScript

# Array Literals
# --------------
# * Array Literals
# * Splats in Array Literals
# TODO: add indexing and method invocation tests: [1][0] is 1, [].toString()
test "trailing commas", ->
trailingComma = [1, 2, 3,]
ok (trailingComma[0] is 1) and (trailingComma[2] is 3) and (trailingComma.length is 3)
trailingComma = [
1, 2, 3,
4, 5, 6
7, 8, 9,
]
(sum = (sum or 0) + n) for n in trailingComma
a = [((x) -> x), ((x) -> x * x)]
ok a.length is 2
test "incorrect indentation without commas", ->
result = [['a']
{b: 'c'}]
ok result[0][0] is 'a'
ok result[1]['b'] is 'c'
# Splats in Array Literals
test "array splat expansions with assignments", ->
nums = [1, 2, 3]
list = [a = 0, nums..., b = 4]
eq 0, a
eq 4, b
arrayEq [0,1,2,3,4], list
test "mixed shorthand objects in array lists", ->
arr = [
a:1
'b'
c:1
]
ok arr.length is 3
ok arr[2].c is 1
arr = [b: 1, a: 2, 100]
eq arr[1], 100
arr = [a:0, b:1, (1 + 1)]
eq arr[1], 2
arr = [a:1, 'a', b:1, 'b']
eq arr.length, 4
eq arr[2].b, 1
eq arr[3], 'b'
test "array splats with nested arrays", ->
nonce = {}
a = [nonce]
list = [1, 2, a...]
eq list[0], 1
eq list[2], nonce
a = [[nonce]]
list = [1, 2, a...]
arrayEq list, [1, 2, [nonce]]
test "#1274: `[] = a()` compiles to `false` instead of `a()`", ->
a = false
fn = -> a = true
[] = fn()
ok a