fix(coderd): improve workspace tests (#15069)

With [a recent PR](https://github.com/coder/coder/pull/14923) we
introduced [new
tests](https://github.com/coder/coder/pull/14923/files#diff-81081239b93aaa61eb8d180a5f9870fda8f0ab5cb4c6727d9d1636aa933e597b)
that - while running in parallel to the existing ones - are failing.

This PR is a quick proposal to fix it - tested in local and in the CI to
unblock the situation. We can ignore it to work on a longer term
solution if preferred.

coderd/workspacebuilds_test.go

@@ -1183,9 +1183,8 @@ func TestPostWorkspaceBuild(t *testing.T) {
 	})
 }
 
+//nolint:paralleltest
 func TestWorkspaceBuildTimings(t *testing.T) {
-	t.Parallel()
-
 	// Setup the test environment with a template and version
 	db, pubsub := dbtestutil.NewDB(t)
 	client := coderdtest.New(t, &coderdtest.Options{
@@ -1238,9 +1237,8 @@ func TestWorkspaceBuildTimings(t *testing.T) {
 		})
 	}
 
+	//nolint:paralleltest
 	t.Run("NonExistentBuild", func(t *testing.T) {
-		t.Parallel()
-
 		// When: fetching an inexistent build
 		buildID := uuid.New()
 		ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitLong)
@@ -1252,9 +1250,8 @@ func TestWorkspaceBuildTimings(t *testing.T) {
 		require.Contains(t, err.Error(), "not found")
 	})
 
+	//nolint:paralleltest
 	t.Run("EmptyTimings", func(t *testing.T) {
-		t.Parallel()
-
 		// When: fetching timings for a build with no timings
 		build := makeBuild()
 		ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitLong)
@@ -1267,9 +1264,8 @@ func TestWorkspaceBuildTimings(t *testing.T) {
 		require.Empty(t, res.AgentScriptTimings)
 	})
 
+	//nolint:paralleltest
 	t.Run("ProvisionerTimings", func(t *testing.T) {
-		t.Parallel()
-
 		// When: fetching timings for a build with provisioner timings
 		build := makeBuild()
 		provisionerTimings := dbgen.ProvisionerJobTimings(t, db, build, 5)
@@ -1294,9 +1290,8 @@ func TestWorkspaceBuildTimings(t *testing.T) {
 		}
 	})
 
+	//nolint:paralleltest
 	t.Run("AgentScriptTimings", func(t *testing.T) {
-		t.Parallel()
-
 		// When: fetching timings for a build with agent script timings
 		build := makeBuild()
 		resource := dbgen.WorkspaceResource(t, db, database.WorkspaceResource{
@@ -1328,9 +1323,8 @@ func TestWorkspaceBuildTimings(t *testing.T) {
 		}
 	})
 
+	//nolint:paralleltest
 	t.Run("NoAgentScripts", func(t *testing.T) {
-		t.Parallel()
-
 		// When: fetching timings for a build with no agent scripts
 		build := makeBuild()
 		resource := dbgen.WorkspaceResource(t, db, database.WorkspaceResource{
@@ -1349,9 +1343,8 @@ func TestWorkspaceBuildTimings(t *testing.T) {
 	})
 
 	// Some workspaces might not have agents. It is improbable, but possible.
+	//nolint:paralleltest
 	t.Run("NoAgents", func(t *testing.T) {
-		t.Parallel()
-
 		// When: fetching timings for a build with no agents
 		build := makeBuild()
 		dbgen.WorkspaceResource(t, db, database.WorkspaceResource{
@@ -1359,6 +1352,7 @@ func TestWorkspaceBuildTimings(t *testing.T) {
 		})
 
 		// Then: return a response with empty agent script timings
+		// trigger build
 		ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitLong)
 		t.Cleanup(cancel)
 		res, err := client.WorkspaceBuildTimings(ctx, build.ID)