Add a test, add to README, add test running

.github/workflows/test.yaml

@@ -0,0 +1,20 @@
+---
+name: "Test"
+on:
+  push:
+    branches:
+      - "main"
+  pull_request:
+    branches: ["*"]
+jobs:
+  tests:
+    name: "Unit and Integration Tests"
+    runs-on: "ubuntu-latest"
+    steps:
+      - uses: "actions/checkout@v4"
+      - uses: "actions/setup-go@v5"
+      - uses: "authzed/action-spicedb@v1"
+        with:
+          version: "latest"
+      - name: "Run tests"
+        run: "go test ./..."

README.md

@@ -144,3 +144,23 @@ func main() {
 	}
 }
 ```
+
+### Insecure Credentials
+For contexts that don't require TLS, such as a development environment or integration
+tests, it's possible to set up a client that does not use TLS:
+
+```go
+import (
+	"github.com/authzed/grpcutil"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+
+	"github.com/authzed/authzed-go/v1"
+)
+
+client, err := authzed.NewClient(
+    "localhost:50051",
+    grpc.WithTransportCredentials(insecure.NewCredentials()),
+    grpcutil.WithInsecureBearerToken("some token"),
+)
+```

v1/client_test.go

@@ -1,10 +1,16 @@
 package authzed_test
 
 import (
+	"context"
 	"log"
+	"testing"
 
 	"github.com/authzed/grpcutil"
+	"github.com/stretchr/testify/require"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
 
+	v1 "github.com/authzed/authzed-go/proto/authzed/api/v1"
 	"github.com/authzed/authzed-go/v1"
 )
 
@@ -23,3 +29,27 @@ func ExampleNewClient() {
 	}
 	log.Println(client)
 }
+
+func TestWriteSchemaCall(t *testing.T) {
+	t.Parallel()
+	require := require.New(t)
+
+	// TODO: should we get a handle on the connection in order to be able to close it?
+	// It should only matter in testing, but it could still be a problem.
+	client, err := authzed.NewClient(
+		"localhost:50051",
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpcutil.WithInsecureBearerToken("some token"),
+	)
+	require.NoError(err)
+
+	schema := `
+	definition document {
+		relation reader: user
+	}
+	definition user {}
+	`
+
+	_, err = client.SchemaServiceClient.WriteSchema(context.Background(), &v1.WriteSchemaRequest{Schema: schema})
+	require.NoError(err)
+}