jashkenas--coffeescript/test/test_assignment.coffee

# Can assign the result of a try/catch block.
result = try
  nonexistent * missing
catch error
  true

result2 = try nonexistent * missing catch error then true

ok result is true and result2 is true


# Can assign a conditional statement.
getX = -> 10

if x = getX() then 100

ok x is 10

x = if getX() then 100

ok x is 100


# This-assignment.
tester = ->
  @example = -> 'example function'
  this

ok tester().example() is 'example function'


try throw CoffeeScript.tokens 'in = 1'
catch e then eq e.message, 'Reserved word "in" on line 1 can\'t be assigned'


num = 10
num -= 5
eq num, 5

num *= 10
eq num, 50

num /= 10
eq num, 5

num %= 3
eq num, 2

val = false
val ||= 'value'
val ||= 'eulav'
eq val, 'value'

val &&= 'rehto'
val &&= 'other'
eq val, 'other'

val = null
val ?= 'value'
val ?= 'eulav'
eq val, 'value'


for nonref in ['""', '0', 'f()']
  try
    ok not CoffeeScript.compile "{k: #{nonref}} = v"
  catch e
    eq e.message, "\"#{nonref}\" cannot be assigned."


# Compound assignments should not declare.
eq Math, (-> Math or= 0)()