test(templates): pin the rendering partials — standalone render, OOB markers, empty state

templates/partials_render_test.go

@@ -0,0 +1,49 @@
+package templates
+
+import (
+	"context"
+	"strings"
+	"testing"
+
+	"bookhoard/internal/handlers"
+)
+
+// The rendering-ownership partials must render standalone (they are
+// fetched by htmx.ajax at runtime) and must never leak templ literal
+// expressions into their markup.
+func TestRenderingPartialsRender(t *testing.T) {
+	var b strings.Builder
+	col := CollectionData{ID: "c1", Name: "Test Shelf", IsSmart: false}
+	books := []handlers.BookInfo{{MediaItemID: "m1", Title: "A Book", Author: "An Author"}}
+	if err := CollectionBooksGrid(col, books).Render(context.Background(), &b); err != nil {
+		t.Fatalf("CollectionBooksGrid: %v", err)
+	}
+	out := b.String()
+	for _, want := range []string{"A Book", `data-media-id="m1"`, "Remove from Collection"} {
+		if !strings.Contains(out, want) {
+			t.Errorf("books grid missing %q", want)
+		}
+	}
+
+	// Empty collection renders the empty state, not a literal loop.
+	b.Reset()
+	if err := CollectionBooksGrid(col, nil).Render(context.Background(), &b); err != nil {
+		t.Fatalf("CollectionBooksGrid empty: %v", err)
+	}
+	if !strings.Contains(b.String(), "No books in this collection yet.") {
+		t.Error("books grid empty state missing")
+	}
+
+	b.Reset()
+	user := User{ID: "u1", Timezone: "UTC"}
+	conflicts := []handlers.ConflictDetailResponse{{ID: "cf1", MediaItemTitle: "War and Peace", ConflictType: "progress"}}
+	if err := ConflictsRefreshFragment(user, conflicts, 3, 1).Render(context.Background(), &b); err != nil {
+		t.Fatalf("ConflictsRefreshFragment: %v", err)
+	}
+	out = b.String()
+	for _, want := range []string{`id="conflicts-list"`, `id="stats-bar"`, "hx-swap-oob", "Resolve"} {
+		if !strings.Contains(out, want) {
+			t.Errorf("conflicts fragment missing %q", want)
+		}
+	}
+}