refactor(agent): add agenttest.New helper function (#9812)

* Adds agenttest.New() helper function
* Makes sure agent gets closed on test cleanup
* Makes sure you don't forget to set session token
* Sets the agent and client logger automatically

coderd/activitybump_test.go

@@ -9,14 +9,13 @@ import (
 	"github.com/stretchr/testify/require"
 
 	"cdr.dev/slog/sloggers/slogtest"
-	"github.com/coder/coder/v2/agent"
+	"github.com/coder/coder/v2/agent/agenttest"
 	"github.com/coder/coder/v2/coderd/coderdtest"
 	"github.com/coder/coder/v2/coderd/database"
 	"github.com/coder/coder/v2/coderd/database/dbtestutil"
 	"github.com/coder/coder/v2/coderd/database/dbtime"
 	"github.com/coder/coder/v2/coderd/schedule"
 	"github.com/coder/coder/v2/codersdk"
-	"github.com/coder/coder/v2/codersdk/agentsdk"
 	"github.com/coder/coder/v2/provisioner/echo"
 	"github.com/coder/coder/v2/testutil"
 )
@@ -86,15 +85,7 @@ func TestWorkspaceActivityBump(t *testing.T) {
 			require.NoError(t, err)
 		}
 
-		agentClient := agentsdk.New(client.URL)
-		agentClient.SetSessionToken(agentToken)
-		agentCloser := agent.New(agent.Options{
-			Client: agentClient,
-			Logger: slogtest.Make(t, nil).Named("agent"),
-		})
-		t.Cleanup(func() {
-			_ = agentCloser.Close()
-		})
+		_ = agenttest.New(t, client.URL, agentToken)
 		coderdtest.AwaitWorkspaceAgents(t, client, workspace.ID)
 
 		// Sanity-check that deadline is near.