v0.11.0 harden persistence and prepare game replays

internal/server/webserver/server_test.go

@@ -0,0 +1,22 @@
+package webserver
+
+import (
+	"io/fs"
+	"testing"
+)
+
+func TestEmbeddedWebClientRoot(t *testing.T) {
+	content, err := fs.Sub(webFS, "chess-client-web")
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, name := range []string{"index.html", "app.js", "style.css"} {
+		data, err := fs.ReadFile(content, name)
+		if err != nil {
+			t.Errorf("read embedded %s: %v", name, err)
+		}
+		if len(data) == 0 {
+			t.Errorf("embedded %s is empty", name)
+		}
+	}
+}