first commit

pigo/internal/remotecontrol/spa_test.go

@@ -0,0 +1,53 @@
+package remotecontrol
+
+import (
+	"io/fs"
+	"strings"
+	"testing"
+)
+
+// TestSPAAssetsEmbedded verifies the browser SPA is compiled into the binary
+// and exposes the files the server serves.
+func TestSPAAssetsEmbedded(t *testing.T) {
+	sub, err := fs.Sub(spaFiles, "web")
+	if err != nil {
+		t.Fatalf("fs.Sub: %v", err)
+	}
+	for _, name := range []string{"index.html", "app.js"} {
+		b, err := fs.ReadFile(sub, name)
+		if err != nil {
+			t.Fatalf("embedded %s missing: %v", name, err)
+		}
+		if len(b) == 0 {
+			t.Fatalf("embedded %s is empty", name)
+		}
+	}
+}
+
+func TestSPAIndexReferencesApp(t *testing.T) {
+	b, err := fs.ReadFile(spaFiles, "web/index.html")
+	if err != nil {
+		t.Fatalf("read index: %v", err)
+	}
+	html := string(b)
+	for _, want := range []string{`id="output"`, `id="composer"`, `id="confirm"`, "app.js", "viewport"} {
+		if !strings.Contains(html, want) {
+			t.Fatalf("index.html missing %q", want)
+		}
+	}
+}
+
+func TestSPAScriptHandlesFrames(t *testing.T) {
+	b, err := fs.ReadFile(spaFiles, "web/app.js")
+	if err != nil {
+		t.Fatalf("read app.js: %v", err)
+	}
+	js := string(b)
+	// The client must understand every server->client frame type and emit the
+	// two client->server types.
+	for _, want := range []string{`"output"`, `"confirm"`, `"status"`, `type: "input"`, `type: "decide"`, "/ws"} {
+		if !strings.Contains(js, want) {
+			t.Fatalf("app.js missing handling for %q", want)
+		}
+	}
+}