GUIDTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.tika.parser.microsoft.onenote;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;

import java.nio.charset.StandardCharsets;

import org.junit.jupiter.api.Test;

import org.apache.tika.exception.TikaException;

public class GUIDTest {

    @Test
    public void testParsesValidGuidRoundTrip() throws Exception {
        byte[] valid = "{638DE92F-a6d4-4BC1-9A36-4AFC2511A5B7}"
                .getBytes(StandardCharsets.UTF_16LE);

        assertEquals("{638DE92F-A6D4-4BC1-9A36-4AFC2511A5B7}",
                GUID.fromCurlyBraceUTF16Bytes(valid).toString());
    }

    @Test
    public void testRejectsNonAsciiUnicodeDigits() {
        // fullwidth '6' is a Unicode digit that Character.digit(c, 16) would accept
        byte[] malformed = "{���38DE92F-A6D4-4BC1-9A36-4AFC2511A5B7}"
                .getBytes(StandardCharsets.UTF_16LE);

        assertThrows(TikaException.class, () -> GUID.fromCurlyBraceUTF16Bytes(malformed));
    }

    @Test
    public void testRejectsMalformedCurlyBraceGuid() {
        byte[] malformed = "{638DE92F-A6D4-4BC1-9��36-4AFC2511A5B7}"
                .getBytes(StandardCharsets.UTF_16LE);

        assertThrows(TikaException.class, () -> GUID.fromCurlyBraceUTF16Bytes(malformed));
    }

    @Test
    public void testRejectsInjectedDashes() {
        String[] malformedGuids = {
                "{-38DE92F-A6D4-4BC1-9A36-4AFC2511A5B7}",
                "{--8DE92F-A6D4-4BC1-9A36-4AFC2511A5B7}",
                "{---8DE92F-A6D4-4BC1-9A36-4AFC2511A5B7}",
                "{----E92F-A6D4-4BC1-9A36-4AFC2511A5B7}"
        };
        for (String malformedGuid : malformedGuids) {
            assertThrows(TikaException.class,
                    () -> GUID.fromCurlyBraceUTF16Bytes(
                            malformedGuid.getBytes(StandardCharsets.UTF_16LE)));
        }
    }
}