/*
 *  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.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.ser.DefaultSerializerProvider;
import com.twosigma.beaker.chart.legend.LegendPosition;
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;

public class LegendPositionSerializerTest {

  static ObjectMapper mapper;
  static LegendPositionSerializer legendPositionSerializer;
  JsonGenerator jgen;
  StringWriter sw;
  LegendPosition legendPosition;

  @BeforeClass
  public static void initClassStubData() {
    mapper = new ObjectMapper();
    legendPositionSerializer = new LegendPositionSerializer();
  }

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

  @Test
  public void serializeLegendPosition_resultJsonHasType() throws IOException {
    //when
    legendPositionSerializer.serialize(legendPosition, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("type")).isTrue();
    Assertions.assertThat(actualObj.get("type").asText()).isEqualTo("LegendPosition");
  }

  @Test
  public void serializePositionOfLegendPosition_resultJsonHasPosition() throws IOException {
    //when
    legendPosition.setPosition(LegendPosition.Position.LEFT);
    legendPositionSerializer.serialize(legendPosition, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("position")).isTrue();
    Assertions.assertThat(actualObj.get("position").asText()).isEqualTo("LEFT");
  }

  @Test
  public void serializeXLegendPosition_resultJsonHasX() throws IOException {
    //when
    LegendPosition legendPositionX = new LegendPosition(new int[] {11, 22});
    legendPositionSerializer.serialize(legendPositionX, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("x")).isTrue();
    Assertions.assertThat(actualObj.get("x").asInt()).isEqualTo(11);
  }

  @Test
  public void serializeYLegendPosition_resultJsonHasY() throws IOException {
    //when
    LegendPosition legendPositionY = new LegendPosition(new int[] {11, 22});
    legendPositionSerializer.serialize(legendPositionY, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("y")).isTrue();
    Assertions.assertThat(actualObj.get("y").asInt()).isEqualTo(22);
  }
}