/*
 *  Copyright 2014 TWO SIGMA OPEN SOURCE, LLC
 *
 *  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.twosigma.beaker.chart.serializer;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.ser.DefaultSerializerProvider;
import com.twosigma.beaker.chart.Color;
import com.twosigma.beaker.chart.GradientColor;
import org.assertj.core.api.Assertions;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;

import java.io.IOException;
import java.io.StringWriter;
import java.util.Arrays;

public class GradientColorSerializerTest {

  static ObjectMapper mapper;
  static GradientColorSerializer gradientColorSerializer;
  JsonGenerator jgen;
  StringWriter sw;

  @BeforeClass
  public static void initClassStubData() {
    mapper = new ObjectMapper();
    gradientColorSerializer = new GradientColorSerializer();
  }

  @Before
  public void initTestStubData() throws IOException {
    sw = new StringWriter();
    jgen = mapper.getJsonFactory().createJsonGenerator(sw);
  }

  @Test
  public void serializeGradientColor_resultJsonHasGradientColor() throws IOException {
    //when
    GradientColor gradientColor = new GradientColor(Arrays.asList(Color.GREEN, Color.BLUE));
    gradientColorSerializer.serialize(gradientColor, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    ArrayNode arrayNode = (ArrayNode) mapper.readTree(sw.toString());
    Assertions.assertThat(arrayNode).isNotEmpty();
    Assertions.assertThat(arrayNode.get(0).get("rgb").asInt()).isEqualTo(Color.GREEN.getRGB());
  }
}