com.google.api.server.spi.response.CollectionResponseTest.java Source code

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Here is the source code for com.google.api.server.spi.response.CollectionResponseTest.java

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/*
 * Copyright 2016 Google Inc. All Rights Reserved.
 *
 * 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.google.api.server.spi.response;

import static com.google.common.truth.Truth.assertThat;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import org.springframework.mock.web.MockHttpServletResponse;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

/**
 * Tests of {@link CollectionResponse}.
 */
@RunWith(JUnit4.class)
public class CollectionResponseTest {

    private static class Bean {
        @SuppressWarnings("unused")
        public int getDummy() {
            return 0;
        }
    }

    @Test
    public void testCollectionResponse() throws IOException {
        MockHttpServletResponse servletResponse = new MockHttpServletResponse();
        ServletResponseResultWriter writer = new ServletResponseResultWriter(servletResponse, null);
        writer.write(getBeans(2));

        ObjectNode json = new ObjectMapper().readValue(servletResponse.getContentAsString(), ObjectNode.class);
        assertThat(json.path("items")).hasSize(2);
        assertThat(json.path("nextPageToken").asText()).isEqualTo("next");
    }

    private CollectionResponse<Bean> getBeans(int beanCount) {
        List<Bean> beans = new ArrayList<Bean>();
        for (int i = 0; i < beanCount; i++) {
            beans.add(new Bean());
        }
        return CollectionResponse.<Bean>builder().setItems(beans).setNextPageToken("next").build();
    }
}