tests/lunit-encoding.lua

   1 local json = require("json")
   2 local lunit = require("lunit")
   3
   4 if not module then
   5     _ENV = lunit.module("lunit-encoding", 'seeall')
   6 else
   7     module("lunit-encoding", lunit.testcase, package.seeall)
   8 end
   9
  10 function test_cloned_array_sibling()
  11         local obj = {}
  12         assert_pass(function()
  13                 json.encode({obj, obj})
  14         end)
  15 end
  16
  17 function test_cloned_object_sibling()
  18         local obj = {}
  19         assert_pass(function()
  20                 json.encode({x = obj, y = obj})
  21         end)
  22 end
  23
  24 function test_cloned_array_deep_sibling()
  25         local obj = {}
  26         assert_pass(function()
  27                 json.encode({
  28                         {obj}, {obj}
  29                 })
  30         end)
  31 end
  32
  33 function test_cloned_array_multilevel_sibling()
  34         local obj = {}
  35         assert_pass(function()
  36                 json.encode({
  37                         {obj, {obj}}
  38                 })
  39         end)
  40 end
  41
  42 function test_recursive_object()
  43         local obj = {}
  44         obj.x = obj
  45         assert_error(function()
  46                 json.encode(obj)
  47         end)
  48 end
  49
  50 function test_recursive_array()
  51         local obj = {}
  52         obj[1] = obj
  53         assert_error(function()
  54                 json.encode(obj)
  55         end)
  56 end
  57
  58 function test_custom_encode()
  59         local obj = { x = "y" }
  60         local sawX
  61         local function preProcessor(value, isObjectKey)
  62                 if value == "x" then
  63                         sawX = true
  64                         assert_true(isObjectKey)
  65                 else
  66                         assert_false(isObjectKey)
  67                 end
  68                 return value
  69         end
  70         local encoder = json.encode.getEncoder({
  71                 preProcess = preProcessor
  72         })
  73         assert_nil(sawX)
  74         encoder(obj)
  75         assert_true(sawX)
  76 end
  77
  78 function test_custom_array()
  79     assert_equal("[]", json.encode(setmetatable({}, {__is_luajson_array = true})))
  80     assert_equal("[]", json.encode(json.util.InitArray({})))
  81 end
  82
  83 function test_undefined()
  84         assert_equal("[undefined]", json.encode({ json.util.undefined }))
  85 end
  86
  87 function test_unknown()
  88         assert_error("Expected attempting to encode an unregistered function to fail", function()
  89                 json.encode({ function() end })
  90         end)
  91 end