import drchaos

type
  ContentNodeKind = enum
    P, Br, Text
  ContentNode = object
    case kind: ContentNodeKind
    of P: pChildren: seq[ContentNode]
    of Br: discard
    of Text: textStr: string

func `==`(a, b: ContentNode): bool =
  if a.kind != b.kind: return false
  case a.kind
  of P: return a.pChildren == b.pChildren
  of Br: return true
  of Text: return a.textStr == b.textStr

func fuzzTarget(x: ContentNode) =
  let data = ContentNode(kind: P, pChildren: @[
    ContentNode(kind: Text, textStr: "mychild"),
    ContentNode(kind: Br)
  ])
  doAssert x != data

defaultMutator(fuzzTarget)