chore(coderd): remove dbmem from tests (#18800)

Related to https://github.com/coder/coder/issues/15109.

coderd/workspaceagents_test.go

@@ -46,7 +46,6 @@ import (
 	"github.com/coder/coder/v2/coderd/database/dbauthz"
 	"github.com/coder/coder/v2/coderd/database/dbfake"
 	"github.com/coder/coder/v2/coderd/database/dbgen"
-	"github.com/coder/coder/v2/coderd/database/dbmem"
 	"github.com/coder/coder/v2/coderd/database/dbtestutil"
 	"github.com/coder/coder/v2/coderd/database/dbtime"
 	"github.com/coder/coder/v2/coderd/database/pubsub"
@@ -1989,8 +1988,8 @@ func (s *testWAMErrorStore) GetWorkspaceAgentMetadata(ctx context.Context, arg d
 func TestWorkspaceAgent_Metadata_CatchMemoryLeak(t *testing.T) {
 	t.Parallel()
 
-	db := &testWAMErrorStore{Store: dbmem.New()}
-	psub := pubsub.NewInMemory()
+	store, psub := dbtestutil.NewDB(t)
+	db := &testWAMErrorStore{Store: store}
 	logger := slogtest.Make(t, &slogtest.Options{IgnoreErrors: true}).Named("coderd").Leveled(slog.LevelDebug)
 	client := coderdtest.New(t, &coderdtest.Options{
 		Database:                 db,

coderd/workspaces_test.go

@@ -8,7 +8,6 @@ import (
 	"fmt"
 	"math"
 	"net/http"
-	"os"
 	"slices"
 	"strings"
 	"testing"
@@ -1426,9 +1425,6 @@ func TestWorkspaceByOwnerAndName(t *testing.T) {
 // TestWorkspaceFilterAllStatus tests workspace status is correctly set given a set of conditions.
 func TestWorkspaceFilterAllStatus(t *testing.T) {
 	t.Parallel()
-	if os.Getenv("DB") != "" {
-		t.Skip(`This test takes too long with an actual database. Takes 10s on local machine`)
-	}
 
 	// For this test, we do not care about permissions.
 	// nolint:gocritic // unit testing