var oplog = {op:"i", ns: "test.test", o: {_id: 1}}

db.dropDatabase()

var res = db.adminCommand({applyOps: [oplog]})

print('Invalid applyOps:' + tojson(res))

// Command fails:

// Invalid applyOps:{

//     "applied" : 1,

//     "code" : 26,

//     "errmsg" : "Failed to apply insert due to missing collection: { op: \"i\", ns: \"test.test\", o: { _id: 1.0 } }",

//     "results" : [

//         false

//     ],

//     "ok" : 0

// }

res = db.adminCommand({applyOps: [{op: "c", ns: "admin.$cmd", o: {applyOps: [oplog]}}]})

print('Nested invalid applyOps:' + tojson(res))

// Command succeeds:

// Nested invalid applyOps:{

//     "applied" : 1,

//     "results" : [

//         true

//     ],

//     "ok" : 1

// }