mirror of
https://github.com/logos-messaging/nim-ffi.git
synced 2026-05-06 02:09:30 +00:00
114 lines
3.1 KiB
Nim
114 lines
3.1 KiB
Nim
import unittest
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import results
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import ../ffi/serial
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ffiType:
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type Point = object
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x: int
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y: int
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ffiType:
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type Nested = object
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label: string
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point: Point
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suite "ffiSerialize / ffiDeserialize primitives":
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test "string round-trip":
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let s = "hello world"
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let serialized = ffiSerialize(s)
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let back = ffiDeserialize(serialized.cstring, string)
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check back.isOk()
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check back.value == s
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test "string with special chars":
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let s = "tab\there"
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let serialized = ffiSerialize(s)
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let back = ffiDeserialize(serialized.cstring, string)
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check back.isOk()
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check back.value == s
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test "int round-trip":
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let v = 42
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let serialized = ffiSerialize(v)
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let back = ffiDeserialize(serialized.cstring, int)
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check back.isOk()
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check back.value == v
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test "int negative round-trip":
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let v = -100
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let serialized = ffiSerialize(v)
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let back = ffiDeserialize(serialized.cstring, int)
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check back.isOk()
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check back.value == v
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test "bool true round-trip":
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let serialized = ffiSerialize(true)
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let back = ffiDeserialize(serialized.cstring, bool)
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check back.isOk()
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check back.value == true
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test "bool false round-trip":
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let serialized = ffiSerialize(false)
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let back = ffiDeserialize(serialized.cstring, bool)
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check back.isOk()
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check back.value == false
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test "float round-trip":
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let v = 3.14
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let serialized = ffiSerialize(v)
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let back = ffiDeserialize(serialized.cstring, float)
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check back.isOk()
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check abs(back.value - v) < 1e-9
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test "float negative round-trip":
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let v = -2.718
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let serialized = ffiSerialize(v)
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let back = ffiDeserialize(serialized.cstring, float)
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check back.isOk()
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check abs(back.value - v) < 1e-9
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suite "pointer serialization":
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test "pointer serialize and recover address":
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var x = 12345
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let p = addr x
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let serialized = ffiSerialize(cast[pointer](p))
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let back = ffiDeserialize(serialized.cstring, pointer)
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check back.isOk()
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check back.value == cast[pointer](p)
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test "nil pointer serializes as 0":
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let p: pointer = nil
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let serialized = ffiSerialize(p)
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check serialized == "0"
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suite "ffiType macro — object round-trip":
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test "Point round-trip":
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let pt = Point(x: 10, y: 20)
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let serialized = ffiSerialize(pt)
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let back = ffiDeserialize(serialized.cstring, Point)
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check back.isOk()
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check back.value.x == 10
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check back.value.y == 20
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test "Nested object round-trip":
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let n = Nested(label: "origin", point: Point(x: 0, y: 0))
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let serialized = ffiSerialize(n)
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let back = ffiDeserialize(serialized.cstring, Nested)
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check back.isOk()
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check back.value.label == "origin"
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check back.value.point.x == 0
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check back.value.point.y == 0
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suite "ffiDeserialize error handling":
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test "malformed JSON returns err":
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let back = ffiDeserialize("not json at all".cstring, int)
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check back.isErr()
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test "wrong JSON type returns err for string":
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let back = ffiDeserialize("42".cstring, string)
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check back.isErr()
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test "malformed JSON for object returns err":
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let back = ffiDeserialize("{bad json".cstring, Point)
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check back.isErr()
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