org.jboss.aerogear.sync.jsonmergepatch.JsonMapperTest.java Source code

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Here is the source code for org.jboss.aerogear.sync.jsonmergepatch.JsonMapperTest.java

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/**
 * JBoss, Home of Professional Open Source
 * Copyright Red Hat, Inc., and individual contributors.
 *
 * 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 org.jboss.aerogear.sync.jsonmergepatch;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.github.fge.jsonpatch.JsonPatchException;
import com.github.fge.jsonpatch.mergepatch.JsonMergePatch;
import org.jboss.aerogear.sync.PatchMessage;
import org.junit.Test;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.notNullValue;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.jboss.aerogear.sync.jsonmergepatch.Patches.*;

public class JsonMapperTest {

    @Test
    public void patchMessageToJson() {
        final String documentId = "1234";
        final String clientId = "client1";
        final PatchMessage<JsonMergePatchEdit> patchMessage = patchMessage(documentId, clientId,
                newJsonMergePatchEdit("Fletch"));

        final String json = JsonMapper.toJson(patchMessage);
        final JsonNode jsonNode = JsonMapper.asJsonNode(json);
        assertThat(jsonNode.get("msgType").asText(), equalTo("patch"));
        assertThat(jsonNode.get("id").asText(), equalTo(documentId));
        assertThat(jsonNode.get("clientId").asText(), equalTo(clientId));
        final JsonNode editsNode = jsonNode.get("edits");
        assertThat(editsNode.isArray(), is(true));
        assertThat(editsNode.size(), is(1));
        final JsonNode edit = editsNode.iterator().next();
        assertThat(edit.get("serverVersion").asText(), equalTo("0"));
        assertThat(edit.get("clientVersion").asText(), equalTo("0"));
        final JsonNode diffs = edit.get("diffs");
        assertThat(diffs.get("name").asText(), equalTo("Fletch"));
    }

    @Test
    public void patchMessageFromJson() throws JsonPatchException {
        final String documentId = "1234";
        final String clientId = "client1";
        final ObjectNode original = objectNode("fletch");
        final String json = JsonMapper.toJson(patchMessage(documentId, clientId, newJsonMergePatchEdit("Fletch")));
        final JsonMergePatchMessage patchMessage = JsonMapper.fromJson(json, JsonMergePatchMessage.class);
        assertThat(patchMessage.documentId(), equalTo(documentId));
        assertThat(patchMessage.clientId(), equalTo(clientId));
        assertThat(patchMessage.edits().size(), is(1));
        assertThat(patchMessage.edits().peek().diff(), is(notNullValue()));
        final JsonMergePatch patch = patchMessage.edits().peek().diff().jsonMergePatch();
        final JsonNode patched = patch.apply(original);
        assertThat(patched.get("name").asText(), equalTo("Fletch"));
    }

    @Test
    public void jsonMergePatchEditToJson() {
        final String json = JsonMapper.toJson(newJsonMergePatchEdit("Fletch"));
        final JsonNode edit = JsonMapper.asJsonNode(json);
        assertThat(edit.get("serverVersion").asText(), equalTo("0"));
        assertThat(edit.get("clientVersion").asText(), equalTo("0"));
        final JsonNode diffs = edit.get("diffs");
        assertThat(diffs.get("name").asText(), equalTo("Fletch"));
    }

    @Test
    public void jsonMergePatchEditFromJson() throws JsonPatchException {
        final ObjectNode original = objectNode("fletch");
        final String json = JsonMapper.toJson(newJsonMergePatchEdit("Fletch"));
        final JsonMergePatchEdit edit = JsonMapper.fromJson(json, JsonMergePatchEdit.class);
        assertThat(edit.diff(), is(notNullValue()));
        final JsonMergePatch patch = edit.diff().jsonMergePatch();
        final JsonNode patched = patch.apply(original);
        assertThat(patched.get("name").asText(), equalTo("Fletch"));
    }

}