error loading field into schema where type = "array" and has "enum" constraint

[roshcagra]

Sample schema.json:
{
"fields": [
{
"name": "field_name",
"type": "array",
"constraints": {
"enum": [
"option1",
"option2",
"option3"
]
}
}
]
}

Some exception is being raised though:
my_schema = Schema("schema.json")

my_schema.fields[0]

False

[roshcagra]

Figured out the error:

tableschema-py/tableschema/field.py

Line 134 in c4d6a3f

constraint = list(map(cast, constraint))

The enums in my example are all strings, but I guess they're supposed to be lists? If the enum constraint is specified for an "array" field like in the above example, is the expectation that the arrays for that field are in the enum or that the elements of the array are in the enum (I was assuming the second)?

[roshcagra]

A larger issue with the spec: frictionlessdata/datapackage#549