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# 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 "#4260: splat after existential operator soak", ->
a = {b: [3]}
foo = (a) -> [a]
arrayEq [a?.b...], [3]
arrayEq [c?.b ? []...], []
arrayEq foo(a?.b...), [3]
arrayEq foo(c?.b ? []...), [undefined]
e = yes
f = null
arrayEq [(a if e)?.b...], [3]
arrayEq [(a if f)?.b ? []...], []
arrayEq foo((a if e)?.b...), [3]
arrayEq foo((a if f)?.b ? []...), [undefined]
test "#1349: trailing if after splat", ->
a = [3]
b = yes
c = null
foo = (a) -> [a]
arrayEq [a if b...], [3]
arrayEq [(a if c) ? []...], []
arrayEq foo((a if b)...), [3]
arrayEq foo((a if c) ? []...), [undefined]
test "#1274: `[] = a()` compiles to `false` instead of `a()`", ->
a = false
fn = -> a = true
[] = fn()
ok a
test "#3194: string interpolation in array", ->
arr = [ "a"
key: 'value'
]
eq 2, arr.length
eq 'a', arr[0]
eq 'value', arr[1].key
b = 'b'
arr = [ "a#{b}"
key: 'value'
]
eq 2, arr.length
eq 'ab', arr[0]
eq 'value', arr[1].key
test "regex interpolation in array", ->
arr = [ /a/
key: 'value'
]
eq 2, arr.length
eq 'a', arr[0].source
eq 'value', arr[1].key
b = 'b'
arr = [ ///a#{b}///
key: 'value'
]
eq 2, arr.length
eq 'ab', arr[0].source
eq 'value', arr[1].key
test "for-from loops over Array", ->
array1 = [50, 30, 70, 20]
array2 = []
for x from array1
array2.push(x)
arrayEq array1, array2
array1 = [[20, 30], [40, 50]]
array2 = []
for [a, b] from array1
array2.push(b)
array2.push(a)
arrayEq array2, [30, 20, 50, 40]
array1 = [{a: 10, b: 20, c: 30}, {a: 40, b: 50, c: 60}]
array2 = []
for {a: a, b, c: d} from array1
array2.push([a, b, d])
arrayEq array2, [[10, 20, 30], [40, 50, 60]]
array1 = [[10, 20, 30, 40, 50]]
for [a, b..., c] from array1
eq 10, a
arrayEq [20, 30, 40], b
eq 50, c
test "for-from comprehensions over Array", ->
array1 = (x + 10 for x from [10, 20, 30])
ok array1.join(' ') is '20 30 40'
array2 = (x for x from [30, 41, 57] when x %% 3 is 0)
ok array2.join(' ') is '30 57'
array1 = (b + 5 for [a, b] from [[20, 30], [40, 50]])
ok array1.join(' ') is '35 55'
array2 = (a + b for [a, b] from [[10, 20], [30, 40], [50, 60]] when a + b >= 70)
ok array2.join(' ') is '70 110'
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