Get POSTing a GroupPermission working

[lewisrenfrew]

• I think you've done all the domain and facade work required to add a new GroupPermission to the database, so the bit thats left is just wiring it up to the endpoint handlers in the module
• You'll need to decide how the client is going to specify that it is a group permission they are trying to create, since currently there is only one POST endpoint to authorisation/permissions (which currently only handles the individual case). You could either:
  • make two seperated endpoints, one specific for groups, one specific for individuals... or
  • check the PermissionResource in your module handler function and check if the GranteeGroupId field is not null. We can use the presence/absence of this field to infer whether its a GroupPermission or an IndividualPermission the client is trying to create, and call the correct service method accordingly
    I think the second option is probably less work
• Then you could add some integration tests for WhenPostingGroupPermission. It'll be very similiar to the current WhenPosting tests https://github.com/linn/authorisation/tree/master/tests/Integration/Integration.Tests/PermissionsModuleTests which you might want to rename to WhenPostingIndividualPermission