Function matchInOrder

browsertests/browser_test.go:160–178

matchInOrder is a chromedp.Action that fetches the text of the first node that matched query and checks that the supplied sequence of strings occur in order in the text.

(t *testing.T, query string, sequence ...string)

// node that matched query and checks that the supplied sequence of
// strings occur in order in the text.
func matchInOrder(t *testing.T, query string, sequence ...string) chromedp.ActionFunc {
	return func(ctx context.Context) error {
		var value string
		err := chromedp.Text(query, &value, chromedp.ByQuery).Do(ctx)
		if err != nil {
			return fmt.Errorf("text %s: %v", query, err)
		}
		t.Logf("text %s:\n%s", query, value)
		remaining := value
		for _, s := range sequence {
			pos := strings.Index(remaining, s)
			if pos < 0 {
				return fmt.Errorf("%s: did not find %q in expected order %v  in\n%s", query, s, sequence, value)
			}
			remaining = remaining[pos+len(s):]
		}
		return nil
	}
}

// eval runs the specified javascript in the browser. The javascript must
// return an [][]any, where each of the []any starts with either "LOG" or