HistogramSerializerTest.java example

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beakerx-master
- kernel
/*
 *  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.node.ArrayNode;
import com.fasterxml.jackson.databind.ser.DefaultSerializerProvider;
import com.twosigma.beaker.chart.Color;
import com.twosigma.beaker.chart.histogram.Histogram;
import com.twosigma.beaker.jupyter.KernelManager;
import com.twosigma.beaker.KernelTest;
import org.assertj.core.api.Assertions;
import org.junit.After;
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 HistogramSerializerTest {

  static ObjectMapper mapper;
  static HistogramSerializer histogramSerializer;
  JsonGenerator jgen;
  StringWriter sw;
  Histogram histogram;

  @BeforeClass
  public static void initClassStubData() {
    mapper = new ObjectMapper();
    histogramSerializer = new HistogramSerializer();
  }

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

  @After
  public void tearDown() throws Exception {
    KernelManager.register(null);
  }

  @Test
  public void serializeColorOfHistogram_resultJsonHasColor() throws IOException {
    //when
    histogram.setColor(Color.GREEN);
    histogramSerializer.serialize(histogram, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("color")).isTrue();
    Assertions.assertThat(actualObj.get("color").get("rgb").asInt())
        .isEqualTo(Color.GREEN.getRGB());
  }

  @Test
  public void serializeColorsOfHistogram_resultJsonHasColors() throws IOException {
    //when
    histogram.setColor(Arrays.asList(Color.GREEN, Color.BLUE));
    histogramSerializer.serialize(histogram, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("colors")).isTrue();
    Assertions.assertThat(actualObj.get("colors")).isNotEmpty();
  }

  @Test
  public void serializeDataListOfHistogram_resultJsonHasGraphicsList() throws IOException {
    //when
    histogram.setData(Arrays.asList(1, 2));
    histogramSerializer.serialize(histogram, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("graphics_list")).isTrue();
    Assertions.assertThat(actualObj.get("graphics_list")).isNotEmpty();
  }

  @Test
  public void serializeDataListListOfHistogram_resultJsonHasGraphicsList() throws IOException {
    //when
    histogram.setData(Arrays.asList(Arrays.asList(1, 2), Arrays.asList(3, 4)));
    histogramSerializer.serialize(histogram, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("graphics_list")).isTrue();
    Assertions.assertThat(actualObj.get("graphics_list")).isNotEmpty();
  }

  @Test
  public void serializeRightCloseOfHistogram_resultJsonHasRightClose() throws IOException {
    //when
    histogram.setRightClose(true);
    histogramSerializer.serialize(histogram, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("right_close")).isTrue();
    Assertions.assertThat(actualObj.get("right_close").asBoolean()).isTrue();
  }

  @Test
  public void serializeRangeMinOfHistogram_resultJsonHasRangeMin() throws IOException {
    //when
    histogram.setRangeMin(11);
    histogramSerializer.serialize(histogram, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("range_min")).isTrue();
    Assertions.assertThat(actualObj.get("range_min").asInt()).isEqualTo(11);
  }

  @Test
  public void serializeRangeMaxOfHistogram_resultJsonHasRangeMax() throws IOException {
    //when
    histogram.setRangeMax(11);
    histogramSerializer.serialize(histogram, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("range_max")).isTrue();
    Assertions.assertThat(actualObj.get("range_max").asInt()).isEqualTo(11);
  }

  @Test
  public void serializeBinCountOfHistogram_resultJsonHasBinCount() throws IOException {
    //when
    histogram.setBinCount(11);
    histogramSerializer.serialize(histogram, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("bin_count")).isTrue();
    Assertions.assertThat(actualObj.get("bin_count").asInt()).isEqualTo(11);
  }

  @Test
  public void serializeCumulativeOfHistogram_resultJsonHasCumulative() throws IOException {
    //when
    histogram.setCumulative(true);
    histogramSerializer.serialize(histogram, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("cumulative")).isTrue();
    Assertions.assertThat(actualObj.get("cumulative").asBoolean()).isTrue();
  }

  @Test
  public void serializeNormedOfHistogram_resultJsonHasNormed() throws IOException {
    //when
    histogram.setNormed(true);
    histogramSerializer.serialize(histogram, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("normed")).isTrue();
    Assertions.assertThat(actualObj.get("normed").asBoolean()).isTrue();
  }

  @Test
  public void serializeLogOfHistogram_resultJsonHasLog() throws IOException {
    //when
    histogram.setLog(true);
    histogramSerializer.serialize(histogram, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("log")).isTrue();
    Assertions.assertThat(actualObj.get("log").asBoolean()).isTrue();
  }

  @Test
  public void serializeDisplayModeOfHistogram_resultJsonHasDisplayMode() throws IOException {
    //when
    histogram.setDisplayMode(Histogram.DisplayMode.STACK);
    histogramSerializer.serialize(histogram, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("displayMode")).isTrue();
    Assertions.assertThat(actualObj.get("displayMode").asText()).isEqualTo("STACK");
  }

  @Test
  public void serializeNamesOfHistogram_resultJsonHasNames() throws IOException {
    //when
    histogram.setNames(Arrays.asList("name1", "name2"));
    histogramSerializer.serialize(histogram, jgen, new DefaultSerializerProvider.Impl());
    jgen.flush();
    //then
    JsonNode actualObj = mapper.readTree(sw.toString());
    Assertions.assertThat(actualObj.has("names")).isTrue();
    ArrayNode arrayNode = (ArrayNode) actualObj.get("names");
    Assertions.assertThat(arrayNode.get(1).asText()).isEqualTo("name2");
  }
}