ProtobufUtilsTest.java

/*
 * Copyright 2021-2021 Exactpro (Exactpro Systems Limited)
 *
 * Licensed 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 com.exactpro.th2.common.schema.util;

import java.lang.reflect.Field;

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

import com.google.protobuf.CodedInputStream;
import com.google.protobuf.util.JsonFormat;

class ProtobufUtilsTest {

    @Test
    void testChangeCodedInputStreamLimit() throws NoSuchFieldException, IllegalAccessException {
        int limitToTest = 500;
        ProtobufUtils.changeCodedInputStreamLimit(limitToTest);
        Integer changedLimit = getField(CodedInputStream.class, "defaultRecursionLimit");
        Assertions.assertEquals(limitToTest, changedLimit);
    }

    @Test
    void testChangeJsonFormatRecursionLimit() throws NoSuchFieldException, IllegalAccessException {
        int limitToTest = 600;
        ProtobufUtils.changeJsonFormatLimit(limitToTest);
        Integer changedLimit = getField(JsonFormat.Parser.class, "DEFAULT_RECURSION_LIMIT");
        Assertions.assertEquals(limitToTest, changedLimit);
    }

    static <T> T getField(Class<?> clazz, String fieldName) throws NoSuchFieldException, IllegalAccessException {
        Field field = clazz.getDeclaredField(fieldName);
        field.setAccessible(true);
        return (T)field.get(null);
    }

}