be.dnsbelgium.rdap.jackson.AbstractSerializerTest.java Source code

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Here is the source code for be.dnsbelgium.rdap.jackson.AbstractSerializerTest.java

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/**
 * Copyright 2014 DNS Belgium vzw
 *
 * 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 be.dnsbelgium.rdap.jackson;

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;

import java.io.IOException;
import java.io.StringWriter;

import static org.junit.Assert.assertEquals;

public abstract class AbstractSerializerTest<T extends JsonSerializer, S> {

    private final ObjectMapper objectMapper = new ObjectMapper();

    public ObjectMapper getObjectMapper() {
        return objectMapper;
    }

    public abstract T getSerializer();

    @SuppressWarnings("unchecked")
    public void serializeAndAssertEquals(String expected, S o, SerializerProvider sp) throws IOException {
        JsonFactory factory = new JsonFactory();
        T serializer = getSerializer();
        StringWriter sw = new StringWriter();
        JsonGenerator jgen = factory.createJsonGenerator(sw);
        serializer.serialize(o, jgen, sp); // unchecked
        jgen.flush();
        sw.flush();
        String result = sw.toString();
        sw.close();
        assertEquals(expected, result);
    }

    public void serializeAndAssertEquals(String expected, S o) throws IOException {
        serializeAndAssertEquals(expected, o, null);
    }

}