}

    public void test_addErrorsFailedToDeleteFile() {
        String property = "testProperty";
        String arg0 = "delete.txt";
        FessMessages result = messages.addErrorsFailedToDeleteFile(property, arg0);
        assertNotNull(result);
        assertSame(messages, result);
        assertTrue(messages.hasMessageOf(property));
    }

            if (!file.delete()) {
                logger.error("Failed to delete {}", file.getAbsolutePath());
                throwValidationError(messages -> messages.addErrorsFailedToDeleteFile(GLOBAL, form.fileName), this::asListHtml);
            }
        }).orElse(() -> {
            throwValidationError(messages -> messages.addErrorsTargetFileDoesNotExist(GLOBAL, form.fileName), this::asListHtml);

        try {
            deleteObject(objectName);
        } catch (final StorageException e) {
            logger.warn("Failed to delete {}", pi.getName(), e);
            throwValidationError(messages -> messages.addErrorsFailedToDeleteFile(GLOBAL, pi.getName()),
                    () -> asListHtml(encodeId(pi.getPath())));
        }
        saveInfo(messages -> messages.addSuccessDeleteFile(GLOBAL, pi.getName()));