test(coderd): close metricscache and avoid background context (#7996)

enterprise/coderd/coderdenttest/coderdenttest.go

@@ -12,7 +12,6 @@ import (
 
 	"github.com/golang-jwt/jwt/v4"
 	"github.com/google/uuid"
-	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
 	"github.com/coder/coder/coderd/coderdtest"
@@ -58,6 +57,8 @@ func New(t *testing.T, options *Options) *codersdk.Client {
 }
 
 func NewWithAPI(t *testing.T, options *Options) (*codersdk.Client, io.Closer, *coderd.API) {
+	t.Helper()
+
 	if options == nil {
 		options = &Options{}
 	}
@@ -77,7 +78,7 @@ func NewWithAPI(t *testing.T, options *Options) (*codersdk.Client, io.Closer, *c
 		Keys:                       Keys,
 		ProxyHealthInterval:        options.ProxyHealthInterval,
 	})
-	assert.NoError(t, err)
+	require.NoError(t, err)
 	setHandler(coderAPI.AGPL.RootHandler)
 	var provisionerCloser io.Closer = nopcloser{}
 	if options.IncludeProvisionerDaemon {