Failed: error parsing query as Extended JSON: invalid JSON input

[ravi-karan]

Rails 5.1.4
2.6.2 :001

db version v4.2.1
git version: edf6d45851c0b9ee15548f0f847df141764a317e
allocator: system
modules: none
build environment:
distarch: x86_64
target_arch: x86_64

mongodump = Mongoid::Shell::Commands::Mongodump.new(collection: 'history_trackers', out: '/Users/ravi/Desktop/Temp', query: '{ "scope": { "$eq": "offer" }, "created_at": { "$gte": { "$date": "2019-12-24T09:36:56.312Z" } } }')

system mongodump.to_s
2019-12-25T21:51:27.779+0530 Failed: error parsing query as Extended JSON: invalid JSON input
=> false

mongodump = Mongoid::Shell::Commands::Mongodump.new(collection: 'history_trackers', out: '/Users/ravi/Desktop/Temp', query: { "scope": { "$eq": "offer" }, "created_at": { "$gte": { "$date": "2019-12-24T09:36:56.312Z" } } })
=> #<Mongoid::Shell::Commands::Mongodump:0x00007fa387045128 @session=#<Mongo::Client:0x70170160720020 cluster=#<Cluster topology=Single[localhost:27017] servers=[#]>>, @collection="history_trackers", @out="/Users/ravi/Desktop/Temp", @query={:scope=>{:$eq=>"offer"}, :created_at=>{:$gte=>{:$date=>"2019-12-24T09:36:56.312Z"}}}>
2.6.2 :012 > system mongodump.to_s
2019-12-25T21:54:59.119+0530 Failed: error parsing query as Extended JSON: invalid JSON input
=> false

[ravi-karan]

2.6.2 :013 > mongodump -d=offer_service_db -c=history_trackers -o='/Users/ravi/Desktop/Temp' -q '{ "scope": { "$eq": "offer" }, "created_at": { "$gte": { "$date": "2019-12-24T09:36:56.312Z" } } }'
2019-12-25T22:07:30.576+0530 writing offer_service_db.history_trackers to
2019-12-25T22:07:30.661+0530 done dumping offer_service_db.history_trackers (1 document)
=> ""
2.6.2 :014 >
2.6.2 :015 >

the query is valid Extended JSON

[dblock]

Feels like a bug to me somewhere, but haven't looked deeper. I suggest writing a spec that reproduces this and I am sure we can fix it easily.