Make sure that HugoSites is always closed when done

Including all the integration tests.

commands/commandeer.go

@@ -42,6 +42,7 @@ import (
 	"github.com/gohugoio/hugo/common/hugo"
 	"github.com/gohugoio/hugo/common/loggers"
 	"github.com/gohugoio/hugo/common/paths"
+	"github.com/gohugoio/hugo/common/types"
 	"github.com/gohugoio/hugo/config"
 	"github.com/gohugoio/hugo/config/allconfig"
 	"github.com/gohugoio/hugo/deps"
@@ -66,6 +67,12 @@ func Execute(args []string) error {
 	}
 	args = mapLegacyArgs(args)
 	cd, err := x.Execute(context.Background(), args)
+	if cd != nil {
+		if closer, ok := cd.Root.Command.(types.Closer); ok {
+			closer.Close()
+		}
+	}
+
 	if err != nil {
 		if err == errHelp {
 			cd.CobraCommand.Help()
@@ -149,6 +156,18 @@ func (r *rootCommand) isVerbose() bool {
 	return r.logger.Level() <= logg.LevelInfo
 }
 
+func (r *rootCommand) Close() error {
+	if r.hugoSites != nil {
+		r.hugoSites.DeleteFunc(func(key configKey, value *hugolib.HugoSites) bool {
+			if value != nil {
+				value.Close()
+			}
+			return false
+		})
+	}
+	return nil
+}
+
 func (r *rootCommand) Build(cd *simplecobra.Commandeer, bcfg hugolib.BuildCfg, cfg config.Provider) (*hugolib.HugoSites, error) {
 	h, err := r.Hugo(cfg)
 	if err != nil {

commands/server.go

@@ -1012,10 +1012,6 @@ func (c *serverCommand) serve() error {
 		c.r.Println("Error:", err)
 	}
 
-	if h := c.hugoTry(); h != nil {
-		h.Close()
-	}
-
 	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 	defer cancel()
 	wg2, ctx := errgroup.WithContext(ctx)

deps/deps.go

@@ -98,6 +98,8 @@ type Deps struct {
 	// TODO(bep) rethink this re. a plugin setup, but this will have to do for now.
 	WasmDispatchers *warpc.Dispatchers
 
+	isClosed bool
+
 	*globalErrHandler
 }
 
@@ -345,6 +347,11 @@ func (d *Deps) TextTmpl() tpl.TemplateParseFinder {
 }
 
 func (d *Deps) Close() error {
+	if d.isClosed {
+		return nil
+	}
+	d.isClosed = true
+
 	if d.MemCache != nil {
 		d.MemCache.Stop()
 	}

hugolib/integrationtest_builder.go

@@ -421,6 +421,12 @@ func (s *IntegrationTestBuilder) Build() *IntegrationTestBuilder {
 		s.Assert(err, qt.IsNil)
 	}
 
+	s.Cleanup(func() {
+		if h := s.H; h != nil {
+			s.Assert(h.Close(), qt.IsNil)
+		}
+	})
+
 	return s
 }