Support use first and last at same time as offset

[NateScarlet]

Current implementation of max limit not correct when use first and last at same time
This operation is only valid when graphene_settings.RELAY_CONNECTION_MAX_LIMIT greater than 9999:

{
  users(first: 9999, last: 1) {
    edges {
      node {
        id
      }
    }
  }
}

Fixed it by using count = min(i for i in (first, last) if i)

[coveralls]

Coverage decreased (-0.1%) to 94.376% when pulling b3bf937 on NateScarlet:connection-offset into f76f38e on graphql-python:master.

[zbyte64]

According to coveralls there are 3 new conditions not tested:

• negative first
• negative last
• 0 max_limit

We should have tests for those.

[NateScarlet]

According to coveralls there are 3 new conditions not tested:

* negative `first`

* negative `last`

* 0 `max_limit`

We should have tests for those.

Added

[danpalmer]

Minor changes and clarifications would be great. Otherwise I think this looks good. Thanks for the contribution, it's great to see more strictness and good error messages.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[NateScarlet]

ping @danpalmer

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[NateScarlet]

I am closing this PR because my project has been rewritten in golang.

[thomas-arun]

@NateScarlet, Sorry to bring this thread back to life. But would you help me with the reason why you re wrote your project in Go Lang?
Did you use graphql-go ?

[NateScarlet]

@NateScarlet, Sorry to bring this thread back to life. But would you help me with the reason why you re wrote your project in Go Lang? Did you use graphql-go ?

I switch to golang because it has better performance on same hardware.

I am using gqlgen