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