org.springframework.cloud.dataflow.server.support.StepExecutionJacksonMixInTests.java Source code

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Here is the source code for org.springframework.cloud.dataflow.server.support.StepExecutionJacksonMixInTests.java

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/*
 * Copyright 2016 the original author or authors.
 *
 * 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.springframework.cloud.dataflow.server.support;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.junit.Test;

import org.springframework.batch.core.JobExecution;
import org.springframework.batch.core.StepExecution;
import org.springframework.batch.item.ExecutionContext;
import org.springframework.cloud.dataflow.server.job.support.ExecutionContextJacksonMixIn;
import org.springframework.cloud.dataflow.server.job.support.StepExecutionJacksonMixIn;

import static org.hamcrest.CoreMatchers.containsString;
import static org.hamcrest.CoreMatchers.not;
import static org.junit.Assert.assertThat;

/**
 * Tests that the {@link ExecutionContextJacksonMixIn} works as expected.
 *
 * @author Gunnar Hillert
 */
public class StepExecutionJacksonMixInTests {

    /**
     * Assert that without using the {@link ExecutionContextJacksonMixIn} Jackson does not
     * render the Step Execution Context correctly (Missing values).
     *
     * @throws JsonProcessingException if a Json generation error occurs.
     */
    @Test(expected = JsonMappingException.class)
    public void testSerializationOfSingleStepExecutionWithoutMixin() throws JsonProcessingException {

        final ObjectMapper objectMapper = new ObjectMapper();

        final StepExecution stepExecution = getStepExecution();
        final String result = objectMapper.writeValueAsString(stepExecution);

        assertThat(result, containsString("\"executionContext\":{\"dirty\":true,\"empty\":false}"));
    }

    /**
     * Assert that by using the {@link ExecutionContextJacksonMixIn} Jackson renders the
     * Step Execution Context correctly.
     *
     * @throws JsonProcessingException if a Json generation error occurs.
     */
    @Test
    public void testSerializationOfSingleStepExecution() throws JsonProcessingException {

        final ObjectMapper objectMapper = new ObjectMapper();

        objectMapper.addMixIn(StepExecution.class, StepExecutionJacksonMixIn.class);
        objectMapper.addMixIn(ExecutionContext.class, ExecutionContextJacksonMixIn.class);

        final StepExecution stepExecution = getStepExecution();
        final String result = objectMapper.writeValueAsString(stepExecution);

        assertThat(result, not(containsString("\"executionContext\":{\"dirty\":true,\"empty\":false}")));
        assertThat(result, containsString("\"executionContext\":{\"dirty\":true,\"empty\":false,\"values\":[{"));

        assertThat(result, containsString("{\"counter\":1234}"));
        assertThat(result, containsString("{\"myDouble\":1.123456}"));
        assertThat(result, containsString("{\"Josh\":4444444444}"));
        assertThat(result, containsString("{\"awesomeString\":\"Yep\"}"));
        assertThat(result, containsString("{\"hello\":\"world\""));
        assertThat(result, containsString("{\"counter2\":9999}"));
    }

    private StepExecution getStepExecution() {
        JobExecution jobExecution = new JobExecution(1L, null, "hi");
        final StepExecution stepExecution = new StepExecution("step1", jobExecution);
        jobExecution.createStepExecution("step1");
        final ExecutionContext executionContext = stepExecution.getExecutionContext();

        executionContext.putInt("counter", 1234);
        executionContext.putDouble("myDouble", 1.123456d);
        executionContext.putLong("Josh", 4444444444L);
        executionContext.putString("awesomeString", "Yep");
        executionContext.put("hello", "world");
        executionContext.put("counter2", 9999);

        return stepExecution;
    }
}