package vcard

import "testing"

func FuzzParse(f *testing.F) {
	f.Add("BEGIN:VCARD\r\nVERSION:4.0\r\nUID:test-1\r\nFN:Test Person\r\nEND:VCARD\r\n")
	f.Add("BEGIN:VCARD\nUID:no-crlf\nEND:VCARD\n")
	f.Add("BEGIN:VCARD\r\nUID:folded\r\nNOTE:line one\r\n continued\r\nEND:VCARD\r\n")
	f.Add("BEGIN:VCARD\r\nUID:escaped\r\nNOTE:a\\,b\\;c\\\\d\\ne\r\nEND:VCARD\r\n")
	f.Add("")
	f.Add("BEGIN:VCARD\r\nEND:VCARD\r\n")
	f.Add("not a vcard at all")
	f.Add("BEGIN:VCARD\r\n:\r\nEND:VCARD\r\n")
	f.Add("BEGIN:VCARD\r\nUID\r\nEND:VCARD\r\n")
	f.Add("BEGIN:VCARD\r\n;;;:;;;\r\nUID:x\r\nEND:VCARD\r\n")

	f.Fuzz(func(t *testing.T, data string) {
		// The only contract checked here: Parse must never panic on any
		// input, malformed or not — a returned error is fine, a crash is
		// not, since this parser runs on untrusted client-supplied CardDAV
		// PUT bodies.
		defer func() {
			if r := recover(); r != nil {
				t.Fatalf("Parse panicked on input %q: %v", data, r)
			}
		}()
		Parse(data)
	})
}