1/* 2 * Copyright 2012 AndroidPlot.com 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.androidplot.util; 18 19import org.junit.Ignore; 20import org.junit.Test; 21 22import static junit.framework.Assert.assertEquals; 23import static org.junit.Assert.fail; 24 25public class ValPixConverterTest { 26 @org.junit.Before 27 public void setUp() throws Exception { 28 29 } 30 31 @org.junit.After 32 public void tearDown() throws Exception { 33 34 } 35 36 /* 37 @org.junit.Test 38 public void testIndexToPix() throws Exception { 39 int sizeInPix = 100; 40 int itemCount = 10; 41 assertEquals(10.0f, ValPixConverter.indexToPix(1, itemCount, sizeInPix)); 42 43 try { 44 ValPixConverter.indexToPix(100, 10, 100); 45 fail("IndexOutOfBoundsException expected."); 46 } catch(IndexOutOfBoundsException ex) { 47 48 } 49 50 } 51 */ 52 53 @org.junit.Test 54 public void testValToPix() throws Exception { 55 int sizeInPix = 100; 56 int min = 0; 57 int max = 100; 58 59 int value = 50; 60 61 assertEquals(50.0f, ValPixConverter.valToPix(value, min, max, sizeInPix, true)); 62 63 // should be closer to the top: 64 // (remember that 0,0 is the top left pixel) 65 value = 75; 66 assertEquals(25.0f, ValPixConverter.valToPix(value, min, max, sizeInPix, true)); 67 68 // should be at the very top: 69 value = 100; 70 assertEquals(0.0f, ValPixConverter.valToPix(value, min, max, sizeInPix, true)); 71 72 // should be at the very top: 73 value = 0; 74 assertEquals(100.0f, ValPixConverter.valToPix(value, min, max, sizeInPix, true)); 75 76 // should be smack in the middle: 77 min = -100; 78 value = 0; 79 assertEquals(50.0f, ValPixConverter.valToPix(value, min, max, sizeInPix, true)); 80 81 // should be at the very bottom: 82 value = 100; 83 assertEquals(0.0f, ValPixConverter.valToPix(value, min, max, sizeInPix, true)); 84 85 // should be in the middle: 86 value = 0; 87 assertEquals(50.0f, ValPixConverter.valToPix(value, min, max, sizeInPix, true)); 88 89 min = -100; 90 max = 100; 91 sizeInPix = 200; 92 assertEquals(0f, ValPixConverter.valToPix(-100, min, max, sizeInPix, false)); 93 assertEquals(200f, ValPixConverter.valToPix(100, min, max, sizeInPix, false)); 94 } 95 96 @org.junit.Test 97 public void testpixToVal() throws Exception { 98 int sizeInPix = 100; 99 int min = 0; 100 int max = 100; 101 102 double value = 50; 103 104 float pixel = ValPixConverter.valToPix(value, min, max, sizeInPix, true); 105 assertEquals(value, ValPixConverter.pixToVal(pixel, min, max, sizeInPix, true)); 106 107 value = 75; 108 pixel = ValPixConverter.valToPix(value, min, max, sizeInPix, true); 109 assertEquals(value, ValPixConverter.pixToVal(pixel, min, max, sizeInPix, true)); 110 111 112 min = -100; 113 value = 50; 114 pixel = ValPixConverter.valToPix(value, min, max, sizeInPix, true); 115 assertEquals(value, ValPixConverter.pixToVal(pixel, min, max, sizeInPix, true)); 116 117 min = -100; 118 value = 60; 119 pixel = ValPixConverter.valToPix(value, min, max, sizeInPix, true); 120 assertEquals(value, ValPixConverter.pixToVal(pixel, min, max, sizeInPix, true)); 121 122 min = 20; 123 value = 50; 124 pixel = ValPixConverter.valToPix(value, min, max, sizeInPix, true); 125 assertEquals(value, ValPixConverter.pixToVal(pixel, min, max, sizeInPix, true)); 126 127 try { 128 ValPixConverter.pixToVal(-5, 0, 0, 0, true); 129 fail("IllegalArgumentException expected."); 130 } catch(IllegalArgumentException ex) { 131 132 } 133 134 135 } 136 137 138 @Test 139 public void testValPerPix() { 140 //double result = ; 141 assertEquals(1.0, ValPixConverter.valPerPix(0, 100, 100)); 142 double expected = 200d/100; 143 assertEquals(expected, ValPixConverter.valPerPix(100, 300, 100)); 144 expected = 50d/100; 145 assertEquals(expected, ValPixConverter.valPerPix(0, 50, 100)); 146 expected = 200d/100; 147 assertEquals(expected, ValPixConverter.valPerPix(-100, 100, 100)); 148 } 149} 150