diff --git a/cmd/build/cmd_pwa.go b/cmd/build/cmd_pwa.go
index 1c3cd8c..d2fb365 100644
--- a/cmd/build/cmd_pwa.go
+++ b/cmd/build/cmd_pwa.go
@@ -11,6 +11,7 @@ import (
"io"
"net/http"
"net/url"
+ "strings"
"dappco.re/go/core"
"dappco.re/go/core/build/internal/ax"
@@ -118,7 +119,7 @@ func findManifestURL(htmlContent, baseURL string) (string, error) {
href = a.Val
}
}
- if rel == "manifest" && href != "" {
+ if relIncludesManifest(rel) && href != "" {
manifestPath = href
return
}
@@ -146,6 +147,17 @@ func findManifestURL(htmlContent, baseURL string) (string, error) {
return manifestURL.String(), nil
}
+// relIncludesManifest reports whether a rel attribute declares a manifest link.
+// HTML allows multiple space-separated tokens and case-insensitive values.
+func relIncludesManifest(rel string) bool {
+ for _, token := range strings.Fields(rel) {
+ if strings.EqualFold(token, "manifest") {
+ return true
+ }
+ }
+ return false
+}
+
// fetchManifest downloads and parses a PWA manifest.
func fetchManifest(ctx context.Context, manifestURL string) (map[string]any, error) {
resp, err := getWithContext(ctx, manifestURL)
diff --git a/cmd/build/cmd_pwa_test.go b/cmd/build/cmd_pwa_test.go
new file mode 100644
index 0000000..9c8c2ca
--- /dev/null
+++ b/cmd/build/cmd_pwa_test.go
@@ -0,0 +1,37 @@
+package buildcmd
+
+import (
+ "testing"
+
+ "github.com/stretchr/testify/assert"
+ "github.com/stretchr/testify/require"
+)
+
+func TestPwa_FindManifestURL_Good(t *testing.T) {
+ t.Run("accepts a standard manifest link", func(t *testing.T) {
+ htmlContent := ``
+
+ got, err := findManifestURL(htmlContent, "https://example.test/app/")
+ require.NoError(t, err)
+ assert.Equal(t, "https://example.test/manifest.json", got)
+ })
+
+ t.Run("accepts case-insensitive tokenised rel values", func(t *testing.T) {
+ htmlContent := ``
+
+ got, err := findManifestURL(htmlContent, "https://example.test/app/")
+ require.NoError(t, err)
+ assert.Equal(t, "https://example.test/app/manifest.json", got)
+ })
+}
+
+func TestPwa_FindManifestURL_Bad(t *testing.T) {
+ t.Run("returns an error when no manifest link exists", func(t *testing.T) {
+ htmlContent := ``
+
+ got, err := findManifestURL(htmlContent, "https://example.test/app/")
+ assert.Error(t, err)
+ assert.Empty(t, got)
+ assert.Contains(t, err.Error(), "pwa.findManifestURL")
+ })
+}