java - Why retrivied id from mongo body.response was incremented?

Question

I was creating some tests, and I got a problema with mongo _id value.

In a test, I am comparing a default ObjectId generated as follows:

private val defaultPersonId = "507f1f77bcf86cd799439011"

Using it before:

repository.save(Person(ObjectId(defaultPersonId), "Anthony", "Andrade"))

Checking if the document was saved, I see that the ObjectId is the default I created.

But when retrieving through a getForEntity it returns with a different value,

expected: <507f1f77bcf86cd799439011> but was: <507f1f771c2010192fca25b7>
Expected :507f1f77bcf86cd799439011
Actual   :507f1f771c2010192fca25b7

My question is: Why it returns in a different way, and whether it would be possible to return as it is in the mongo.

Answer 1

等待大神答复