Distributed Services with Go: 'make tests' fails on testProduceConsume (code matches at this stage) page 132

@travisjeffery

As per instructions up to page 132, I have checked the code against the downloadable resources and A/B’d back and forth. Everything appears to be in good shape. At this point, it tells me to update the NewGRPCServer function and then I can run make test and everything will pass as before. Unfortunately, the tests are failing.

 make test
go test -race ./...
?       github.com/myusername/proglog/api/v1 [no test files]
?       github.com/myusername/proglog/cmd/server     [no test files]
?       github.com/myusername/proglog/internal/config        [no test files]
ok      github.com/myusername/proglog/internal/log   (cached)
--- FAIL: TestServer (0.00s)
    --- FAIL: TestServer/produce/consume_a_message_to/from_the_log_succeeds (0.00s)
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
        panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x28 pc=0x17a26a3]

goroutine 20 [running]:
testing.tRunner.func1.2(0x1817ae0, 0x1ccd540)
        /usr/local/Cellar/go/1.16.6/libexec/src/testing/testing.go:1143 +0x49f
testing.tRunner.func1(0xc000082d80)
        /usr/local/Cellar/go/1.16.6/libexec/src/testing/testing.go:1146 +0x695
panic(0x1817ae0, 0x1ccd540)
        /usr/local/Cellar/go/1.16.6/libexec/src/runtime/panic.go:971 +0x499
github.com/elesq/proglog/internal/server.testProduceConsume(0xc000082d80, 0x0, 0x0, 0xc00017e530)
        /Users/ed/code/myusername/go/book-distributed-services-with-go/proglog/internal/server/server_test.go:107 +0x1e3
github.com/myusername/proglog/internal/server.TestServer.func1(0xc000082d80)
        /Users/ed/code/myusername/go/book-distributed-services-with-go/proglog/internal/server/server_test.go:34 +0x118
testing.tRunner(0xc000082d80, 0xc00009bcf0)
        /usr/local/Cellar/go/1.16.6/libexec/src/testing/testing.go:1193 +0x203
created by testing.(*T).Run
        /usr/local/Cellar/go/1.16.6/libexec/src/testing/testing.go:1238 +0x5d8
FAIL    github.com/myusername/proglog/internal/server        0.482s
FAIL
make: *** [test] Error 1

Check the testcase shows my code is the same as the book and repo. Any ideas?

serve_test.go:107

produce, err := client.Produce(
		ctx,
		&api.ProduceRequest{
			Record: want,
		},
	)
	require.NoError(t, err)

and server_test:34

t.Run(scenario, func(t *testing.T) {
			client,
				config,
				teardown := setupTest(t, nil)
			defer teardown()

			fn(t, client, config) // this is line 34
		})

Cheers