com.meltmedia.jackson.crypto.DecryptWithObjectMapperTest.java Source code

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Here is the source code for com.meltmedia.jackson.crypto.DecryptWithObjectMapperTest.java

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/**
 * Copyright (C) 2014 meltmedia (christian.trimble@meltmedia.com)
 *
 * 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.meltmedia.jackson.crypto;

import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.assertThat;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import org.junit.Before;
import org.junit.Test;

import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.TreeTraversingParser;
import com.meltmedia.jackson.crypto.beans.DeserAnnotatedWithEncrypted;
import com.meltmedia.jackson.crypto.beans.SerAnnotatedWithEncrypted;
import com.meltmedia.jackson.crypto.beans.WithEncrypted;

public class DecryptWithObjectMapperTest {

    ObjectMapper mapper;
    EncryptionService<EncryptedJson> service;

    @Before
    public void setUp() {
        Map<String, char[]> keys = new HashMap<String, char[]>();
        keys.put("current", "current secret".toCharArray());
        keys.put("old", "old secret".toCharArray());

        mapper = new ObjectMapper();

        service = EncryptionService.builder().withPassphraseLookup(Functions.passphraseFunction(keys))
                .withEncryptedJsonSupplier(Functions.encryptedJsonSupplier("current")).withObjectMapper(mapper)
                .build();

        mapper.registerModule(new CryptoModule().addSource(service));
    }

    @Test
    public void shouldRoundTrip() throws IOException {
        WithEncrypted withEncrypted = new WithEncrypted().withStringValue("some secret");

        String value = mapper.writeValueAsString(withEncrypted);

        WithEncrypted decrypted = mapper.readValue(value, WithEncrypted.class);

        assertThat("the original class and the decrypted class are the same", decrypted, equalTo(withEncrypted));
    }

    @Test
    public void shouldDecryptWithDeserializerAnnotation()
            throws JsonParseException, JsonMappingException, JsonProcessingException, IOException {
        SerAnnotatedWithEncrypted toEncrypt = new SerAnnotatedWithEncrypted().withValue("some value");

        DeserAnnotatedWithEncrypted roundTrip = mapper.readValue(mapper.writeValueAsString(toEncrypt),
                DeserAnnotatedWithEncrypted.class);

        assertThat(roundTrip.value, equalTo("some value"));

    }

    @Test
    public void shouldDecryptWithoutObjectCodec() throws IOException {
        WithEncrypted withEncrypted = new WithEncrypted().withStringValue("some secret");

        JsonNode node = mapper.convertValue(withEncrypted, JsonNode.class);

        WithEncrypted result = mapper.copy().readValue(new TreeTraversingParser(node), WithEncrypted.class);
    }

}