If you wish to work on the provider, you'll first need Go installed on your machine (version 1.13+ is required). You'll also need to correctly setup a GOPATH, as well as adding $GOPATH/bin to your $PATH.
To compile the provider, run make build. This will build the provider and put the provider binary in the $GOPATH/bin directory.
$ make build
In order to test the provider, you can simply run make test.
$ make test
In order to run the full suite of Acceptance tests, run make testacc.
Note: Acceptance tests create real resources, and often cost money to run.