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discard """
targets: "c cpp js"
"""
import std/jsonutils
import std/json
proc testRoundtrip[T](t: T, expected: string) =
let j = t.toJson
doAssert $j == expected, $j
doAssert j.jsonTo(T).toJson == j
import tables
import strtabs
type Foo = ref object
id: int
proc `==`(a, b: Foo): bool =
a.id == b.id
template fn() =
block: # toJson, jsonTo
type Foo = distinct float
testRoundtrip('x', """120""")
when not defined(js):
testRoundtrip(cast[pointer](12345)): """12345"""
when nimvm:
discard
# bugs:
# Error: unhandled exception: 'intVal' is not accessible using discriminant 'kind' of type 'TNode' [
# Error: VM does not support 'cast' from tyNil to tyPointer
else:
testRoundtrip(pointer(nil)): """0"""
testRoundtrip(cast[pointer](nil)): """0"""
# causes workaround in `fromJson` potentially related to
# https://github.com/nim-lang/Nim/issues/12282
testRoundtrip(Foo(1.5)): """1.5"""
block:
testRoundtrip({"z": "Z", "y": "Y"}.toOrderedTable): """{"z":"Z","y":"Y"}"""
when not defined(js): # pending https://github.com/nim-lang/Nim/issues/14574
testRoundtrip({"z": (f1: 'f'), }.toTable): """{"z":{"f1":102}}"""
block:
testRoundtrip({"name": "John", "city": "Monaco"}.newStringTable): """{"mode":"modeCaseSensitive","table":{"city":"Monaco","name":"John"}}"""
block: # complex example
let t = {"z": "Z", "y": "Y"}.newStringTable
type A = ref object
a1: string
let a = (1.1, "fo", 'x', @[10,11], [true, false], [t,newStringTable()], [0'i8,3'i8], -4'i16, (foo: 0.5'f32, bar: A(a1: "abc"), bar2: A.default))
testRoundtrip(a):
"""[1.1,"fo",120,[10,11],[true,false],[{"mode":"modeCaseSensitive","table":{"y":"Y","z":"Z"}},{"mode":"modeCaseSensitive","table":{}}],[0,3],-4,{"foo":0.5,"bar":{"a1":"abc"},"bar2":null}]"""
block:
# edge case when user defined `==` doesn't handle `nil` well, eg:
# https://github.com/nim-lang/nimble/blob/63695f490728e3935692c29f3d71944d83bb1e83/src/nimblepkg/version.nim#L105
testRoundtrip(@[Foo(id: 10), nil]): """[{"id":10},null]"""
block:
type Foo = enum f1, f2, f3, f4, f5
type Bar = enum b1, b2, b3, b4
let a = [f2: b2, f3: b3, f4: b4]
doAssert b2.ord == 1 # explains the `1`
testRoundtrip(a): """[1,2,3]"""
static: fn()
fn()
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