jashkenas--coffeescript/test/objects.coffee

969 lines
18 KiB
CoffeeScript

# Object Literals
# ---------------
# TODO: refactor object literal tests
# TODO: add indexing and method invocation tests: {a}['a'] is a, {a}.a()
trailingComma = {k1: "v1", k2: 4, k3: (-> true),}
ok trailingComma.k3() and (trailingComma.k2 is 4) and (trailingComma.k1 is "v1")
ok {a: (num) -> num is 10 }.a 10
moe = {
name: 'Moe'
greet: (salutation) ->
salutation + " " + @name
hello: ->
@['greet'] "Hello"
10: 'number'
}
ok moe.hello() is "Hello Moe"
ok moe[10] is 'number'
moe.hello = ->
this['greet'] "Hello"
ok moe.hello() is 'Hello Moe'
obj = {
is: -> yes,
'not': -> no,
}
ok obj.is()
ok not obj.not()
### Top-level object literal... ###
obj: 1
### ...doesn't break things. ###
# Object literals should be able to include keywords.
obj = {class: 'höt'}
obj.function = 'dog'
ok obj.class + obj.function is 'hötdog'
# Implicit objects as part of chained calls.
pluck = (x) -> x.a
eq 100, pluck pluck pluck a: a: a: 100
test "YAML-style object literals", ->
obj =
a: 1
b: 2
eq 1, obj.a
eq 2, obj.b
config =
development:
server: 'localhost'
timeout: 10
production:
server: 'dreamboat'
timeout: 1000
ok config.development.server is 'localhost'
ok config.production.server is 'dreamboat'
ok config.development.timeout is 10
ok config.production.timeout is 1000
obj =
a: 1,
b: 2,
ok obj.a is 1
ok obj.b is 2
# Implicit objects nesting.
obj =
options:
value: yes
fn: ->
{}
null
ok obj.options.value is yes
ok obj.fn() is null
# Implicit objects with wacky indentation:
obj =
'reverse': (obj) ->
Array.prototype.reverse.call obj
abc: ->
@reverse(
@reverse @reverse ['a', 'b', 'c'].reverse()
)
one: [1, 2,
a: 'b'
3, 4]
red:
orange:
yellow:
green: 'blue'
indigo: 'violet'
misdent: [[],
[],
[],
[]]
ok obj.abc().join(' ') is 'a b c'
ok obj.one.length is 5
ok obj.one[4] is 4
ok obj.one[2].a is 'b'
ok (key for key of obj.red).length is 2
ok obj.red.orange.yellow.green is 'blue'
ok obj.red.indigo is 'violet'
ok obj.misdent.toString() is ',,,'
#542: Objects leading expression statement should be parenthesized.
{f: -> ok yes }.f() + 1
# String-keyed objects shouldn't suppress newlines.
one =
'>!': 3
six: -> 10
ok not one.six
# Shorthand objects with property references.
obj =
### comment one ###
### comment two ###
one: 1
two: 2
object: -> {@one, @two}
list: -> [@one, @two]
result = obj.object()
eq result.one, 1
eq result.two, 2
eq result.two, obj.list()[1]
third = (a, b, c) -> c
obj =
one: 'one'
two: third 'one', 'two', 'three'
ok obj.one is 'one'
ok obj.two is 'three'
test "invoking functions with implicit object literals", ->
generateGetter = (prop) -> (obj) -> obj[prop]
getA = generateGetter 'a'
getArgs = -> arguments
a = b = 30
result = getA
a: 10
eq 10, result
result = getA
"a": 20
eq 20, result
result = getA a,
b:1
eq undefined, result
result = getA b:1,
a:43
eq 43, result
result = getA b:1,
a:62
eq undefined, result
result = getA
b:1
a
eq undefined, result
result = getA
a:
b:2
b:1
eq 2, result.b
result = getArgs
a:1
b
c:1
ok result.length is 3
ok result[2].c is 1
result = getA b: 13, a: 42, 2
eq 42, result
result = getArgs a:1, (1 + 1)
ok result[1] is 2
result = getArgs a:1, b
ok result.length is 2
ok result[1] is 30
result = getArgs a:1, b, b:1, a
ok result.length is 4
ok result[2].b is 1
throwsCompileError "a = b:1, c"
test "some weird indentation in YAML-style object literals", ->
two = (a, b) -> b
obj = then two 1,
1: 1
a:
b: ->
fn c,
d: e
f: 1
eq 1, obj[1]
test "#1274: `{} = a()` compiles to `false` instead of `a()`", ->
a = false
fn = -> a = true
{} = fn()
ok a
test "#1436: `for` etc. work as normal property names", ->
obj = {}
eq no, obj.hasOwnProperty 'for'
obj.for = 'foo' of obj
eq yes, obj.hasOwnProperty 'for'
test "#2706, Un-bracketed object as argument causes inconsistent behavior", ->
foo = (x, y) -> y
bar = baz: yes
eq yes, foo x: 1, bar.baz
test "#2608, Allow inline objects in arguments to be followed by more arguments", ->
foo = (x, y) -> y
eq yes, foo x: 1, y: 2, yes
test "#2308, a: b = c:1", ->
foo = a: b = c: yes
eq b.c, yes
eq foo.a.c, yes
test "#2317, a: b c: 1", ->
foo = (x) -> x
bar = a: foo c: yes
eq bar.a.c, yes
test "#1896, a: func b, {c: d}", ->
first = (x) -> x
second = (x, y) -> y
third = (x, y, z) -> z
one = 1
two = 2
three = 3
four = 4
foo = a: second one, {c: two}
eq foo.a.c, two
bar = a: second one, c: two
eq bar.a.c, two
baz = a: second one, {c: two}, e: first first h: three
eq baz.a.c, two
qux = a: third one, {c: two}, e: first first h: three
eq qux.a.e.h, three
quux = a: third one, {c: two}, e: first(three), h: four
eq quux.a.e, three
eq quux.a.h, four
corge = a: third one, {c: two}, e: second three, h: four
eq corge.a.e.h, four
test "Implicit objects, functions and arrays", ->
first = (x) -> x
second = (x, y) -> y
foo = [
1
one: 1
two: 2
three: 3
more:
four: 4
five: 5, six: 6
2, 3, 4
5]
eq foo[2], 2
eq foo[1].more.six, 6
bar = [
1
first first first second 1,
one: 1, twoandthree: twoandthree: two: 2, three: 3
2,
2
one: 1
two: 2
three: first second ->
no
, ->
3
3
4]
eq bar[2], 2
eq bar[1].twoandthree.twoandthree.two, 2
eq bar[3].three(), 3
eq bar[4], 3
test "#2549, Brace-less Object Literal as a Second Operand on a New Line", ->
foo = no or
one: 1
two: 2
three: 3
eq foo.one, 1
bar = yes and one: 1
eq bar.one, 1
baz = null ?
one: 1
two: 2
eq baz.two, 2
test "#2757, Nested", ->
foo =
bar:
one: 1,
eq foo.bar.one, 1
baz =
qux:
one: 1,
corge:
two: 2,
three: three: three: 3,
xyzzy:
thud:
four:
four: 4,
five: 5,
eq baz.qux.one, 1
eq baz.corge.three.three.three, 3
eq baz.xyzzy.thud.four.four, 4
eq baz.xyzzy.five, 5
test "#1865, syntax regression 1.1.3", ->
foo = (x, y) -> y
bar = a: foo (->),
c: yes
eq bar.a.c, yes
baz = a: foo (->), c: yes
eq baz.a.c, yes
test "#1322: implicit call against implicit object with block comments", ->
((obj, arg) ->
eq obj.x * obj.y, 6
ok not arg
)
###
x
###
x: 2
### y ###
y: 3
test "#1513: Top level bare objs need to be wrapped in parens for unary and existence ops", ->
doesNotThrow -> CoffeeScript.run "{}?", bare: true
doesNotThrow -> CoffeeScript.run "{}.a++", bare: true
test "#1871: Special case for IMPLICIT_END in the middle of an implicit object", ->
result = 'result'
ident = (x) -> x
result = ident one: 1 if false
eq result, 'result'
result = ident
one: 1
two: 2 for i in [1..3]
eq result.two.join(' '), '2 2 2'
test "#1871: implicit object closed by IMPLICIT_END in implicit returns", ->
ob = do ->
a: 1 if no
eq ob, undefined
# instead these return an object
func = ->
key:
i for i in [1, 2, 3]
eq func().key.join(' '), '1 2 3'
func = ->
key: (i for i in [1, 2, 3])
eq func().key.join(' '), '1 2 3'
test "#1961, #1974, regression with compound assigning to an implicit object", ->
obj = null
obj ?=
one: 1
two: 2
eq obj.two, 2
obj = null
obj or=
three: 3
four: 4
eq obj.four, 4
test "#2207: Immediate implicit closes don't close implicit objects", ->
func = ->
key: for i in [1, 2, 3] then i
eq func().key.join(' '), '1 2 3'
test "#3216: For loop declaration as a value of an implicit object", ->
test = [0..2]
ob =
a: for v, i in test then i
b: for v, i in test then i
c: for v in test by 1 then v
d: for v in test when true then v
arrayEq ob.a, test
arrayEq ob.b, test
arrayEq ob.c, test
arrayEq ob.d, test
byFirstKey =
a: for v in test by 1 then v
arrayEq byFirstKey.a, test
whenFirstKey =
a: for v in test when true then v
arrayEq whenFirstKey.a, test
test 'inline implicit object literals within multiline implicit object literals', ->
x =
a: aa: 0
b: 0
eq 0, x.b
eq 0, x.a.aa
test "object keys with interpolations: simple cases", ->
a = 'a'
obj = "#{a}": yes
eq obj.a, yes
obj = {"#{a}": yes}
eq obj.a, yes
obj = {"#{a}"}
eq obj.a, 'a'
obj = {"#{5}"}
eq obj[5], '5' # Note that the value is a string, just like the key.
test "object keys with interpolations: commas in implicit object", ->
obj = "#{'a'}": 1, b: 2
deepEqual obj, {a: 1, b: 2}
obj = a: 1, "#{'b'}": 2
deepEqual obj, {a: 1, b: 2}
obj = "#{'a'}": 1, "#{'b'}": 2
deepEqual obj, {a: 1, b: 2}
test "object keys with interpolations: commas in explicit object", ->
obj = {"#{'a'}": 1, b: 2}
deepEqual obj, {a: 1, b: 2}
obj = {a: 1, "#{'b'}": 2}
deepEqual obj, {a: 1, b: 2}
obj = {"#{'a'}": 1, "#{'b'}": 2}
deepEqual obj, {a: 1, b: 2}
test "object keys with interpolations: commas after key with interpolation", ->
obj = {"#{'a'}": yes,}
eq obj.a, yes
obj = {
"#{'a'}": 1,
"#{'b'}": 2,
### herecomment ###
"#{'c'}": 3,
}
deepEqual obj, {a: 1, b: 2, c: 3}
obj =
"#{'a'}": 1,
"#{'b'}": 2,
### herecomment ###
"#{'c'}": 3,
deepEqual obj, {a: 1, b: 2, c: 3}
obj =
"#{'a'}": 1,
"#{'b'}": 2,
### herecomment ###
"#{'c'}": 3, "#{'d'}": 4,
deepEqual obj, {a: 1, b: 2, c: 3, d: 4}
test "object keys with interpolations: key with interpolation mixed with `@prop`", ->
deepEqual (-> {@a, "#{'b'}": 2}).call(a: 1), {a: 1, b: 2}
test "object keys with interpolations: evaluate only once", ->
count = 0
a = -> count++; 'a'
obj = {"#{a()}"}
eq obj.a, 'a'
eq count, 1
test "object keys with interpolations: evaluation order", ->
arr = []
obj =
a: arr.push 1
b: arr.push 2
"#{'c'}": arr.push 3
"#{'d'}": arr.push 4
e: arr.push 5
"#{'f'}": arr.push 6
g: arr.push 7
arrayEq arr, [1..7]
deepEqual obj, {a: 1, b: 2, c: 3, d: 4, e: 5, f: 6, g: 7}
test "object keys with interpolations: object starting with dynamic key", ->
obj =
"#{'a'}": 1
b: 2
deepEqual obj, {a: 1, b: 2}
test "object keys with interpolations: comments in implicit object", ->
obj =
### leading comment ###
"#{'a'}": 1
### middle ###
"#{'b'}": 2
# regular comment
'c': 3
### foo ###
d: 4
"#{'e'}": 5
deepEqual obj, {a: 1, b: 2, c: 3, d: 4, e: 5}
# Comments in explicit object.
obj = {
### leading comment ###
"#{'a'}": 1
### middle ###
"#{'b'}": 2
# regular comment
'c': 3
### foo ###
d: 4
"#{'e'}": 5
}
deepEqual obj, {a: 1, b: 2, c: 3, d: 4, e: 5}
test "object keys with interpolations: more complicated case", ->
obj = {
"#{'interpolated'}":
"""
#{ '''nested''' }
""": 123: 456
}
deepEqual obj,
interpolated:
nested:
123: 456
test "#4324: Shorthand after interpolated key", ->
a = 2
obj = {"#{1}": 1, a}
eq 1, obj[1]
eq 2, obj.a
test "computed property keys: simple cases", ->
a = 'a'
obj = [a]: yes
eq obj.a, yes
obj = {[a]: yes}
eq obj.a, yes
obj = {[a]}
eq obj.a, 'a'
obj = {[5]}
eq obj[5], 5
obj = {['5']}
eq obj['5'], '5'
test "computed property keys: commas in implicit object", ->
obj = ['a']: 1, b: 2
deepEqual obj, {a: 1, b: 2}
obj = a: 1, ['b']: 2
deepEqual obj, {a: 1, b: 2}
obj = ['a']: 1, ['b']: 2
deepEqual obj, {a: 1, b: 2}
test "computed property keys: commas in explicit object", ->
obj = {['a']: 1, b: 2}
deepEqual obj, {a: 1, b: 2}
obj = {a: 1, ['b']: 2}
deepEqual obj, {a: 1, b: 2}
obj = {['a']: 1, ['b']: 2}
deepEqual obj, {a: 1, b: 2}
test "computed property keys: commas after key with interpolation", ->
obj = {['a']: yes,}
eq obj.a, yes
obj = {
['a']: 1,
['b']: 2,
### herecomment ###
['c']: 3,
}
deepEqual obj, {a: 1, b: 2, c: 3}
obj =
['a']: 1,
['b']: 2,
### herecomment ###
['c']: 3,
deepEqual obj, {a: 1, b: 2, c: 3}
obj =
['a']: 1,
['b']: 2,
### herecomment ###
['c']: 3, ['d']: 4,
deepEqual obj, {a: 1, b: 2, c: 3, d: 4}
test "computed property keys: key with interpolation mixed with `@prop`", ->
deepEqual (-> {@a, ['b']: 2}).call(a: 1), {a: 1, b: 2}
test "computed property keys: evaluate only once", ->
count = 0
a = -> count++; 'a'
obj = {[a()]}
eq obj.a, 'a'
eq count, 1
test "computed property keys: evaluation order", ->
arr = []
obj =
a: arr.push 1
b: arr.push 2
['c']: arr.push 3
['d']: arr.push 4
e: arr.push 5
['f']: arr.push 6
g: arr.push 7
arrayEq arr, [1..7]
deepEqual obj, {a: 1, b: 2, c: 3, d: 4, e: 5, f: 6, g: 7}
test "computed property keys: object starting with dynamic key", ->
obj =
['a']: 1
b: 2
deepEqual obj, {a: 1, b: 2}
test "computed property keys: comments in implicit object", ->
obj =
### leading comment ###
['a']: 1
### middle ###
['b']: 2
# regular comment
'c': 3
### foo ###
d: 4
['e']: 5
deepEqual obj, {a: 1, b: 2, c: 3, d: 4, e: 5}
obj = {
### leading comment ###
['a']: 1
### middle ###
['b']: 2
# regular comment
'c': 3
### foo ###
d: 4
['e']: 5
}
deepEqual obj, {a: 1, b: 2, c: 3, d: 4, e: 5}
test "computed property keys: more complicated case", ->
obj = {
['interpolated']:
['nested']:
123: 456
}
deepEqual obj,
interpolated:
nested:
123: 456
test "computed property keys: empty array as key", ->
o1 = { [[]] }
deepEqual o1, { [[]]: [] }
arrayEq o1[[]], []
o2 = { [[]]: 1 }
deepEqual o2, { [[]]: 1 }
eq o2[[]], 1
o3 = [[]]: 1
deepEqual o3, { [[]]: 1 }
deepEqual o3, { [[]]: 1 }
eq o3[[]], 1
o4 = a: 1, [[]]: 2
deepEqual o4, { a: 1, [[]]: 2 }
eq o4.a, 1,
eq o4[[]], 2
o5 = { a: 1, [[]]: 2 }
deepEqual o5, { a: 1, [[]]: 2 }
eq o5.a, 1,
eq o5[[]], 2
test "computed property keys: shorthand after computed property key", ->
a = 2
obj = {[1]: 1, a}
eq 1, obj[1]
eq 2, obj.a
test "computed property keys: shorthand computed property key", ->
a = 'b'
o = {[a]}
p = {a}
r = {['a']}
eq o.b, 'b'
eq p.a, o.b
eq r.a, 'a'
foo = -> "a"
obj = { [foo()] }
eq obj.a, 'a'
test "computed property keys: arrays", ->
b = 'b'
f = (c) -> "#{c}1"
obj =
['a']: [1, 2, 3]
[b]: [4, 5, 6]
[f(b)]: [7, 8, 9]
arrayEq obj.a, [1, 2, 3]
arrayEq obj.b, [4, 5, 6]
arrayEq obj.b1, [7, 8, 9]
test "computed property keys: examples from developer.mozilla.org (Object initializer)", ->
i = 0
obj =
['foo' + ++i]: i
['foo' + ++i]: i
['foo' + ++i]: i
eq obj.foo1, 1
eq obj.foo2, 2
eq obj.foo3, 3
param = 'size'
config =
[param]: 12,
['mobile' + param.charAt(0).toUpperCase() + param.slice(1)]: 4
deepEqual config, {size: 12, mobileSize: 4}
test "computed property keys: [Symbol.iterator]", ->
obj =
[Symbol.iterator]: ->
yield "hello"
yield "world"
arrayEq [obj...], ['hello', 'world']
test "computed property keys: Class property", ->
increment_method = "increment"
decrement_method = "decrement"
class Obs
constructor: (@count) ->
[increment_method]: -> @count += 1
[decrement_method]: -> @count -= 1
ob = new Obs 2
eq ob.increment(), 3
eq ob.decrement(), 2
test "#1263: Braceless object return", ->
fn = ->
return
a: 1
b: 2
c: -> 3
obj = fn()
eq 1, obj.a
eq 2, obj.b
eq 3, obj.c()
test "#4564: indent should close implicit object", ->
f = (x) -> x
arrayEq ['a'],
for key of f a: 1
key
g = null
if f a: 1
g = 3
eq g, 3
h = null
if a: (i for i in [1, 2, 3])
h = 4
eq h, 4
test "#4544: Postfix conditionals in first line of implicit object literals", ->
two =
foo:
bar: 42 if yes
baz: 1337
eq 42, two.foo.bar
eq 1337, two.foo.baz
f = (x) -> x
three =
foo: f
bar: 42 if yes
baz: 1337
eq 42, three.foo.bar
eq 1337, three.foo.baz
four =
f
foo:
bar: 42 if yes
baz: 1337
eq 42, four.foo.bar
eq 1337, four.baz
x = bar: 42 if no
baz: 1337
ok not x?
# Example from #2051
a = null
_alert = (arg) -> a = arg
_alert
val3: "works" if true
val: "hello"
val2: "all good"
eq a.val2, "all good"
test "#4579: Postfix for/while/until in first line of implicit object literals", ->
two =
foo:
bar1: x for x in [1, 2, 3]
bar2: x + y for x, y in [1, 2, 3]
baz: 1337
arrayEq [1, 2, 3], two.foo.bar1
arrayEq [1, 3, 5], two.foo.bar2
eq 1337, two.foo.baz
f = (x) -> x
three =
foo: f
bar1: x + y for x, y of a: 'b', c: 'd'
bar2: x + 'c' for x of a: 1, b: 2
baz: 1337
arrayEq ['ab', 'cd'], three.foo.bar1
arrayEq ['ac', 'bc'], three.foo.bar2
eq 1337, three.foo.baz
four =
f
foo:
"bar_#{x}": x for x of a: 1, b: 2
baz: 1337
eq 'a', four.foo[0].bar_a
eq 'b', four.foo[1].bar_b
eq 1337, four.baz
x = bar: 42 for y in [1]
baz: 1337
eq x.bar, 42
i = 5
five =
foo:
bar: i while i-- > 0
baz: 1337
arrayEq [4, 3, 2, 1, 0], five.foo.bar
eq 1337, five.foo.baz
i = 5
six =
foo:
bar: i until i-- <= 0
baz: 1337
arrayEq [4, 3, 2, 1, 0], six.foo.bar
eq 1337, six.foo.baz
test "#5204: not parsed as static property", ->
doesNotThrowCompileError "@ [b]: 2"
test "#5292: implicit object after line continuer in implicit object property value", ->
a =
b: 0 or
c: 1
eq 1, a.b.c
# following object property
a =
b: null ?
c: 1
d: 2
eq 1, a.b.c
eq 2, a.d
# multiline nested object
a =
b: 0 or
c: 1
d: 2
e: 3
eq 1, a.b.c
eq 2, a.b.d
eq 3, a.e
test "#5368: continuing object and array literals", ->
{ a
b: { c }
} = {a: 1, b: {c: 2}}
eq a, 1
eq c, 2
[d
e: f
] = [3, {e: 4}]
eq d, 3
eq f, 4
A =
[d
e: f
]
eq A[0], 3
eq A[1].e, 4
for obj in [
{a: a
c: c
}
{a: a
c
}
{a
c: c
}
{a
c
}
]
eq obj.a, 1
eq obj.c, 2