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/*
* Copyright 2012 AndroidPlot.com
*
* 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.androidplot.util;
import org.junit.Ignore;
import org.junit.Test;
import static junit.framework.Assert.assertEquals;
import static org.junit.Assert.fail;
public class ValPixConverterTest {
@org.junit.Before
public void setUp() throws Exception {
}
@org.junit.After
public void tearDown() throws Exception {
}
/*
@org.junit.Test
public void testIndexToPix() throws Exception {
int sizeInPix = 100;
int itemCount = 10;
assertEquals(10.0f, ValPixConverter.indexToPix(1, itemCount, sizeInPix));
try {
ValPixConverter.indexToPix(100, 10, 100);
fail("IndexOutOfBoundsException expected.");
} catch(IndexOutOfBoundsException ex) {
}
}
*/
@org.junit.Test
public void testValToPix() throws Exception {
int sizeInPix = 100;
int min = 0;
int max = 100;
int value = 50;
assertEquals(50.0f, ValPixConverter.valToPix(value, min, max, sizeInPix, true));
// should be closer to the top:
// (remember that 0,0 is the top left pixel)
value = 75;
assertEquals(25.0f, ValPixConverter.valToPix(value, min, max, sizeInPix, true));
// should be at the very top:
value = 100;
assertEquals(0.0f, ValPixConverter.valToPix(value, min, max, sizeInPix, true));
// should be at the very top:
value = 0;
assertEquals(100.0f, ValPixConverter.valToPix(value, min, max, sizeInPix, true));
// should be smack in the middle:
min = -100;
value = 0;
assertEquals(50.0f, ValPixConverter.valToPix(value, min, max, sizeInPix, true));
// should be at the very bottom:
value = 100;
assertEquals(0.0f, ValPixConverter.valToPix(value, min, max, sizeInPix, true));
// should be in the middle:
value = 0;
assertEquals(50.0f, ValPixConverter.valToPix(value, min, max, sizeInPix, true));
min = -100;
max = 100;
sizeInPix = 200;
assertEquals(0f, ValPixConverter.valToPix(-100, min, max, sizeInPix, false));
assertEquals(200f, ValPixConverter.valToPix(100, min, max, sizeInPix, false));
}
@org.junit.Test
public void testpixToVal() throws Exception {
int sizeInPix = 100;
int min = 0;
int max = 100;
double value = 50;
float pixel = ValPixConverter.valToPix(value, min, max, sizeInPix, true);
assertEquals(value, ValPixConverter.pixToVal(pixel, min, max, sizeInPix, true));
value = 75;
pixel = ValPixConverter.valToPix(value, min, max, sizeInPix, true);
assertEquals(value, ValPixConverter.pixToVal(pixel, min, max, sizeInPix, true));
min = -100;
value = 50;
pixel = ValPixConverter.valToPix(value, min, max, sizeInPix, true);
assertEquals(value, ValPixConverter.pixToVal(pixel, min, max, sizeInPix, true));
min = -100;
value = 60;
pixel = ValPixConverter.valToPix(value, min, max, sizeInPix, true);
assertEquals(value, ValPixConverter.pixToVal(pixel, min, max, sizeInPix, true));
min = 20;
value = 50;
pixel = ValPixConverter.valToPix(value, min, max, sizeInPix, true);
assertEquals(value, ValPixConverter.pixToVal(pixel, min, max, sizeInPix, true));
try {
ValPixConverter.pixToVal(-5, 0, 0, 0, true);
fail("IllegalArgumentException expected.");
} catch(IllegalArgumentException ex) {
}
}
@Test
public void testValPerPix() {
//double result = ;
assertEquals(1.0, ValPixConverter.valPerPix(0, 100, 100));
double expected = 200d/100;
assertEquals(expected, ValPixConverter.valPerPix(100, 300, 100));
expected = 50d/100;
assertEquals(expected, ValPixConverter.valPerPix(0, 50, 100));
expected = 200d/100;
assertEquals(expected, ValPixConverter.valPerPix(-100, 100, 100));
}
}