/*
 * Copyright 2016-2017 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 de.vorb.platon.web.api;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;

import static org.assertj.core.api.Assertions.assertThat;

@RunWith(SpringRunner.class)
@ContextConfiguration(classes = ApiConfig.class)
public class ApiConfigIT {

    @Autowired
    private ObjectMapper objectMapper;

    @Test
    public void writeDatesAsTimestampsIsDisabled() throws Exception {
        assertThatSerializationFeatureIsDisabled(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
    }

    private void assertThatSerializationFeatureIsDisabled(SerializationFeature serializationFeature) {

        final int configuredFeatures = objectMapper.getSerializationConfig().getSerializationFeatures();
        final int disallowedFeatureMask = serializationFeature.getMask();

        final int matchedFeatureMask = configuredFeatures & disallowedFeatureMask;

        assertThat(matchedFeatureMask).isEqualTo(0);
    }
}

/*
 * Copyright 2016-2017 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 de.vorb.platon.web.api;

import de.vorb.platon.app.PlatonApp;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import static org.assertj.core.api.Assertions.assertThat;
import static org.springframework.boot.test.context.SpringBootTest.WebEnvironment.NONE;

@RunWith(SpringRunner.class)
@SpringBootTest(classes = PlatonApp.class, webEnvironment = NONE)
public class ApiConfigIT {

    @Autowired
    private ObjectMapper objectMapper;

    @Test
    public void writeDatesAsTimestampsIsDisabled() throws Exception {
        assertThatSerializationFeatureIsDisabled(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
    }

    private void assertThatSerializationFeatureIsDisabled(SerializationFeature serializationFeature) {

        final int configuredFeatures = objectMapper.getSerializationConfig().getSerializationFeatures();
        final int disallowedFeatureMask = serializationFeature.getMask();

        final int matchedFeatureMask = configuredFeatures & disallowedFeatureMask;

        assertThat(matchedFeatureMask).isEqualTo(0);
    }
}

Use @SpringBootTest to fix IT