vibesonic/internal/lyrics/lrc_fuzz_test.go

package lyrics

import "testing"

// FuzzParse guards against a crash/panic in the LRC parser when fed
// arbitrary bytes — lyrics come from sidecar files and embedded tags
// found while scanning a music library, so the content is effectively
// untrusted input.
func FuzzParse(f *testing.F) {
	f.Add("[00:12.34]First line\n[00:15.00]Second line")
	f.Add("[la:en]\n[00:12.34]<00:12.34>Hello <00:12.90>world")
	f.Add("")
	f.Add("[not a tag")
	f.Add("[99:99.999999999999]overflowing timestamp")
	f.Add("[00:12.34][00:15.00]shared timestamp line")
	f.Add("no timestamps at all, just plain text")

	f.Fuzz(func(t *testing.T, content string) {
		defer func() {
			if r := recover(); r != nil {
				t.Fatalf("Parse panicked on %q: %v", content, r)
			}
		}()
		Parse(content)
	})
}