ColorTest.java

/*
 *  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;

import org.assertj.core.api.Assertions;
import org.junit.Test;

public class ColorTest {

  @Test
  public void createColorWithIntRGBParams_ColorHasRGBValues() throws IllegalArgumentException {
    //when
    Color color = new Color(100, 150, 200);
    //then
    Assertions.assertThat(color.getRed()).isEqualTo(100);
    Assertions.assertThat(color.getGreen()).isEqualTo(150);
    Assertions.assertThat(color.getBlue()).isEqualTo(200);
  }

  @Test
  public void createColorWithFloatRGBParams_ColorHasRGBValues() throws IllegalArgumentException {
    //when
    Color color = new Color(0.1f, 0.2f, 0.3f);
    //then
    Assertions.assertThat(color.getRed()).isEqualTo(26);
    Assertions.assertThat(color.getGreen()).isEqualTo(51);
    Assertions.assertThat(color.getBlue()).isEqualTo(77);
  }

  @Test
  public void createColorWithFourFloatParams_ColorHasRGBValues() throws IllegalArgumentException {
    //when
    Color color = new Color(0.1f, 0.2f, 0.3f, 0.4f);
    //then
    Assertions.assertThat(color.getRed()).isEqualTo(26);
    Assertions.assertThat(color.getGreen()).isEqualTo(51);
    Assertions.assertThat(color.getBlue()).isEqualTo(77);
  }

  @Test
  public void createColorWithIndAndFalseParams_ColorHasRGBValues() throws IllegalArgumentException {
    //when
    Color color = new Color(200, false);
    //then
    Assertions.assertThat(color.getRed()).isEqualTo(0);
    Assertions.assertThat(color.getGreen()).isEqualTo(0);
    Assertions.assertThat(color.getBlue()).isEqualTo(200);
  }

  @Test
  public void createColorWithIntAndTrueParams_ColorHasRGBValues() throws IllegalArgumentException {
    //when
    Color color = new Color(200, true);
    //then
    Assertions.assertThat(color.getRed()).isEqualTo(0);
    Assertions.assertThat(color.getGreen()).isEqualTo(0);
    Assertions.assertThat(color.getBlue()).isEqualTo(200);
  }


  @Test
  public void createColorByDecodeString_ColorHasRGBValues() throws IllegalArgumentException {
    //when
    Color color = Color.decode("200");
    //then
    Assertions.assertThat(color.getRed()).isEqualTo(0);
    Assertions.assertThat(color.getGreen()).isEqualTo(0);
    Assertions.assertThat(color.getBlue()).isEqualTo(200);
  }

  @Test
  public void hashCode_returnRGBValue() throws IllegalArgumentException {
    //given
    Color color = new Color(100, 150, 200);
    //when
    //then
    Assertions.assertThat(color.hashCode()).isEqualTo(color.getRGB());
  }

  @Test
  public void toString_returnStringRGBValues() throws IllegalArgumentException {
    //given
    Color color = new Color(100, 150, 200);
    //when
    //then
    Assertions.assertThat(color.toString()).contains(Integer.toString(color.getBlue()));
    Assertions.assertThat(color.toString()).contains(Integer.toString(color.getGreen()));
    Assertions.assertThat(color.toString()).contains(Integer.toString(color.getRed()));
  }

  @Test
  public void createColorWithAwtColorParam_ColorHasRGBValues() {
    //when
    Color color = new Color(new java.awt.Color(100, 150, 200));
    //then
    Assertions.assertThat(color.getRed()).isEqualTo(100);
    Assertions.assertThat(color.getGreen()).isEqualTo(150);
    Assertions.assertThat(color.getBlue()).isEqualTo(200);
  }

  @Test(expected = IllegalArgumentException.class)
  public void createColorWithIllegalIntRGBParams_ThrowIllegalArgumentException()
      throws IllegalArgumentException {
    new Color(300, 150, 200);
  }

  @Test(expected = IllegalArgumentException.class)
  public void createColorWithIllegalFloatRGBParams_ThrowIllegalArgumentException()
      throws IllegalArgumentException {
    new Color(100.1f, 0.2f, 0.3f);
  }
}