git.gag.com Git - debian/openrocket/blob - test/net/sf/openrocket/util/TextUtilTest.java

   1 package net.sf.openrocket.util;
   2
   3 import static java.lang.Math.PI;
   4 import static org.junit.Assert.assertEquals;
   5
   6 import org.junit.Test;
   7
   8 public class TextUtilTest {
   9
  10         @Test
  11         public void specialCaseTest() {
  12                 assertEquals("NaN",TextUtil.doubleToString(Double.NaN));
  13                 assertEquals("Inf",TextUtil.doubleToString(Double.POSITIVE_INFINITY));
  14                 assertEquals("-Inf",TextUtil.doubleToString(Double.NEGATIVE_INFINITY));
  15                 assertEquals("0",TextUtil.doubleToString(0.0));
  16                 assertEquals("0",TextUtil.doubleToString(MathUtil.EPSILON/3));
  17                 assertEquals("0",TextUtil.doubleToString(-MathUtil.EPSILON/3));
  18         }
  19
  20         @Test
  21         public void longTest() {
  22
  23                 assertEquals("3.1416e-5", TextUtil.doubleToString(PI*1e-5));
  24                 assertEquals("3.1416e-4", TextUtil.doubleToString(PI*1e-4));
  25                 assertEquals("0.0031416", TextUtil.doubleToString(PI*1e-3));
  26                 assertEquals("0.031416",  TextUtil.doubleToString(PI*1e-2));
  27                 assertEquals("0.31416",   TextUtil.doubleToString(PI*1e-1));
  28                 assertEquals("3.1416",    TextUtil.doubleToString(PI));
  29                 assertEquals("31.416",    TextUtil.doubleToString(PI*1e1));
  30                 assertEquals("314.16",    TextUtil.doubleToString(PI*1e2));
  31                 assertEquals("3141.6",    TextUtil.doubleToString(PI*1e3));
  32                 assertEquals("31416",     TextUtil.doubleToString(PI*1e4));
  33                 assertEquals("314159",    TextUtil.doubleToString(PI*1e5));
  34                 assertEquals("3141593",   TextUtil.doubleToString(PI*1e6));
  35                 assertEquals("31415927",  TextUtil.doubleToString(PI*1e7));
  36                 assertEquals("3.1416e8",  TextUtil.doubleToString(PI*1e8));
  37                 assertEquals("3.1416e9",  TextUtil.doubleToString(PI*1e9));
  38                 assertEquals("3.1416e10", TextUtil.doubleToString(PI*1e10));
  39
  40                 assertEquals("-3.1416e-5", TextUtil.doubleToString(-PI*1e-5));
  41                 assertEquals("-3.1416e-4", TextUtil.doubleToString(-PI*1e-4));
  42                 assertEquals("-0.0031416", TextUtil.doubleToString(-PI*1e-3));
  43                 assertEquals("-0.031416",  TextUtil.doubleToString(-PI*1e-2));
  44                 assertEquals("-0.31416",   TextUtil.doubleToString(-PI*1e-1));
  45                 assertEquals("-3.1416",    TextUtil.doubleToString(-PI));
  46                 assertEquals("-31.416",    TextUtil.doubleToString(-PI*1e1));
  47                 assertEquals("-314.16",    TextUtil.doubleToString(-PI*1e2));
  48                 assertEquals("-3141.6",    TextUtil.doubleToString(-PI*1e3));
  49                 assertEquals("-31416",     TextUtil.doubleToString(-PI*1e4));
  50                 assertEquals("-314159",    TextUtil.doubleToString(-PI*1e5));
  51                 assertEquals("-3141593",   TextUtil.doubleToString(-PI*1e6));
  52                 assertEquals("-31415927",  TextUtil.doubleToString(-PI*1e7));
  53                 assertEquals("-3.1416e8",  TextUtil.doubleToString(-PI*1e8));
  54                 assertEquals("-3.1416e9",  TextUtil.doubleToString(-PI*1e9));
  55                 assertEquals("-3.1416e10", TextUtil.doubleToString(-PI*1e10));
  56
  57         }
  58
  59         @Test
  60         public void shortTest() {
  61                 double p = 3.1;
  62                 assertEquals("3.1e-5", TextUtil.doubleToString(p*1e-5));
  63                 assertEquals("3.1e-4", TextUtil.doubleToString(p*1e-4));
  64                 assertEquals("0.0031", TextUtil.doubleToString(p*1e-3));
  65                 assertEquals("0.031",  TextUtil.doubleToString(p*1e-2));
  66                 assertEquals("0.31",   TextUtil.doubleToString(p*1e-1));
  67                 assertEquals("3.1",    TextUtil.doubleToString(p));
  68                 assertEquals("31",     TextUtil.doubleToString(p*1e1));
  69                 assertEquals("310",    TextUtil.doubleToString(p*1e2));
  70                 assertEquals("3100",   TextUtil.doubleToString(p*1e3));
  71                 assertEquals("31000",  TextUtil.doubleToString(p*1e4));
  72                 assertEquals("3.1e5",  TextUtil.doubleToString(p*1e5));
  73                 assertEquals("3.1e6",  TextUtil.doubleToString(p*1e6));
  74                 assertEquals("3.1e7",  TextUtil.doubleToString(p*1e7));
  75                 assertEquals("3.1e8",  TextUtil.doubleToString(p*1e8));
  76                 assertEquals("3.1e9",  TextUtil.doubleToString(p*1e9));
  77                 assertEquals("3.1e10", TextUtil.doubleToString(p*1e10));
  78
  79                 assertEquals("-3.1e-5", TextUtil.doubleToString(-p*1e-5));
  80                 assertEquals("-3.1e-4", TextUtil.doubleToString(-p*1e-4));
  81                 assertEquals("-0.0031", TextUtil.doubleToString(-p*1e-3));
  82                 assertEquals("-0.031",  TextUtil.doubleToString(-p*1e-2));
  83                 assertEquals("-0.31",   TextUtil.doubleToString(-p*1e-1));
  84                 assertEquals("-3.1",    TextUtil.doubleToString(-p));
  85                 assertEquals("-31",     TextUtil.doubleToString(-p*1e1));
  86                 assertEquals("-310",    TextUtil.doubleToString(-p*1e2));
  87                 assertEquals("-3100",   TextUtil.doubleToString(-p*1e3));
  88                 assertEquals("-31000",  TextUtil.doubleToString(-p*1e4));
  89                 assertEquals("-3.1e5",  TextUtil.doubleToString(-p*1e5));
  90                 assertEquals("-3.1e6",  TextUtil.doubleToString(-p*1e6));
  91                 assertEquals("-3.1e7",  TextUtil.doubleToString(-p*1e7));
  92                 assertEquals("-3.1e8",  TextUtil.doubleToString(-p*1e8));
  93                 assertEquals("-3.1e9",  TextUtil.doubleToString(-p*1e9));
  94                 assertEquals("-3.1e10", TextUtil.doubleToString(-p*1e10));
  95
  96                 p = 3;
  97                 assertEquals("3e-5", TextUtil.doubleToString(p*1e-5));
  98                 assertEquals("3e-4", TextUtil.doubleToString(p*1e-4));
  99                 assertEquals("3e-3", TextUtil.doubleToString(p*1e-3));
 100                 assertEquals("0.03", TextUtil.doubleToString(p*1e-2));
 101                 assertEquals("0.3",  TextUtil.doubleToString(p*1e-1));
 102                 assertEquals("3",    TextUtil.doubleToString(p));
 103                 assertEquals("30",   TextUtil.doubleToString(p*1e1));
 104                 assertEquals("300",  TextUtil.doubleToString(p*1e2));
 105                 assertEquals("3e3",  TextUtil.doubleToString(p*1e3));
 106                 assertEquals("3e4",  TextUtil.doubleToString(p*1e4));
 107                 assertEquals("3e5",  TextUtil.doubleToString(p*1e5));
 108                 assertEquals("3e6",  TextUtil.doubleToString(p*1e6));
 109                 assertEquals("3e7",  TextUtil.doubleToString(p*1e7));
 110                 assertEquals("3e8",  TextUtil.doubleToString(p*1e8));
 111                 assertEquals("3e9",  TextUtil.doubleToString(p*1e9));
 112                 assertEquals("3e10", TextUtil.doubleToString(p*1e10));
 113
 114                 assertEquals("-3e-5", TextUtil.doubleToString(-p*1e-5));
 115                 assertEquals("-3e-4", TextUtil.doubleToString(-p*1e-4));
 116                 assertEquals("-3e-3", TextUtil.doubleToString(-p*1e-3));
 117                 assertEquals("-0.03", TextUtil.doubleToString(-p*1e-2));
 118                 assertEquals("-0.3",  TextUtil.doubleToString(-p*1e-1));
 119                 assertEquals("-3",    TextUtil.doubleToString(-p));
 120                 assertEquals("-30",   TextUtil.doubleToString(-p*1e1));
 121                 assertEquals("-300",  TextUtil.doubleToString(-p*1e2));
 122                 assertEquals("-3e3",  TextUtil.doubleToString(-p*1e3));
 123                 assertEquals("-3e4",  TextUtil.doubleToString(-p*1e4));
 124                 assertEquals("-3e5",  TextUtil.doubleToString(-p*1e5));
 125                 assertEquals("-3e6",  TextUtil.doubleToString(-p*1e6));
 126                 assertEquals("-3e7",  TextUtil.doubleToString(-p*1e7));
 127                 assertEquals("-3e8",  TextUtil.doubleToString(-p*1e8));
 128                 assertEquals("-3e9",  TextUtil.doubleToString(-p*1e9));
 129                 assertEquals("-3e10", TextUtil.doubleToString(-p*1e10));
 130
 131         }
 132
 133         @Test
 134         public void roundingTest() {
 135
 136                 /*
 137                  * Not testing with 1.00015 because it might be changed during number formatting
 138                  * calculations.  Its rounding is basically arbitrary anyway.
 139                  */
 140
 141                 assertEquals("1.0002e-5", TextUtil.doubleToString(1.0001500001e-5));
 142                 assertEquals("1.0001e-5", TextUtil.doubleToString(1.0001499999e-5));
 143                 assertEquals("1.0002e-4", TextUtil.doubleToString(1.0001500001e-4));
 144                 assertEquals("1.0001e-4", TextUtil.doubleToString(1.0001499999e-4));
 145                 assertEquals("0.0010002", TextUtil.doubleToString(1.0001500001e-3));
 146                 assertEquals("0.0010001", TextUtil.doubleToString(1.0001499999e-3));
 147                 assertEquals("0.010002",  TextUtil.doubleToString(1.0001500001e-2));
 148                 assertEquals("0.010001",  TextUtil.doubleToString(1.0001499999e-2));
 149                 assertEquals("0.10002",   TextUtil.doubleToString(1.0001500001e-1));
 150                 assertEquals("0.10001",   TextUtil.doubleToString(1.0001499999e-1));
 151                 assertEquals("1.0002",    TextUtil.doubleToString(1.0001500001));
 152                 assertEquals("1.0001",    TextUtil.doubleToString(1.0001499999));
 153                 assertEquals("10.002",    TextUtil.doubleToString(1.0001500001e1));
 154                 assertEquals("10.001",    TextUtil.doubleToString(1.0001499999e1));
 155                 assertEquals("100.02",    TextUtil.doubleToString(1.0001500001e2));
 156                 assertEquals("100.01",    TextUtil.doubleToString(1.0001499999e2));
 157                 assertEquals("1000.2",    TextUtil.doubleToString(1.0001500001e3));
 158                 assertEquals("1000.1",    TextUtil.doubleToString(1.0001499999e3));
 159                 assertEquals("10002",     TextUtil.doubleToString(1.0001500001e4));
 160                 assertEquals("10001",     TextUtil.doubleToString(1.0001499999e4));
 161                 assertEquals("100012",    TextUtil.doubleToString(1.00011500001e5));
 162                 assertEquals("100011",    TextUtil.doubleToString(1.00011499999e5));
 163                 assertEquals("1000112",   TextUtil.doubleToString(1.000111500001e6));
 164                 assertEquals("1000111",   TextUtil.doubleToString(1.000111499999e6));
 165                 assertEquals("10001112",  TextUtil.doubleToString(1.0001111500001e7));
 166                 assertEquals("10001111",  TextUtil.doubleToString(1.0001111499999e7));
 167                 assertEquals("1.0002e8",  TextUtil.doubleToString(1.0001500001e8));
 168                 assertEquals("1.0001e8",  TextUtil.doubleToString(1.0001499999e8));
 169                 assertEquals("1.0002e9",  TextUtil.doubleToString(1.0001500001e9));
 170                 assertEquals("1.0001e9",  TextUtil.doubleToString(1.0001499999e9));
 171                 assertEquals("1.0002e10", TextUtil.doubleToString(1.0001500001e10));
 172                 assertEquals("1.0001e10", TextUtil.doubleToString(1.0001499999e10));
 173
 174
 175                 assertEquals("-1.0002e-5", TextUtil.doubleToString(-1.0001500001e-5));
 176                 assertEquals("-1.0001e-5", TextUtil.doubleToString(-1.0001499999e-5));
 177                 assertEquals("-1.0002e-4", TextUtil.doubleToString(-1.0001500001e-4));
 178                 assertEquals("-1.0001e-4", TextUtil.doubleToString(-1.0001499999e-4));
 179                 assertEquals("-0.0010002", TextUtil.doubleToString(-1.0001500001e-3));
 180                 assertEquals("-0.0010001", TextUtil.doubleToString(-1.0001499999e-3));
 181                 assertEquals("-0.010002",  TextUtil.doubleToString(-1.0001500001e-2));
 182                 assertEquals("-0.010001",  TextUtil.doubleToString(-1.0001499999e-2));
 183                 assertEquals("-0.10002",   TextUtil.doubleToString(-1.0001500001e-1));
 184                 assertEquals("-0.10001",   TextUtil.doubleToString(-1.0001499999e-1));
 185                 assertEquals("-1.0002",    TextUtil.doubleToString(-1.0001500001));
 186                 assertEquals("-1.0001",    TextUtil.doubleToString(-1.0001499999));
 187                 assertEquals("-10.002",    TextUtil.doubleToString(-1.0001500001e1));
 188                 assertEquals("-10.001",    TextUtil.doubleToString(-1.0001499999e1));
 189                 assertEquals("-100.02",    TextUtil.doubleToString(-1.0001500001e2));
 190                 assertEquals("-100.01",    TextUtil.doubleToString(-1.0001499999e2));
 191                 assertEquals("-1000.2",    TextUtil.doubleToString(-1.0001500001e3));
 192                 assertEquals("-1000.1",    TextUtil.doubleToString(-1.0001499999e3));
 193                 assertEquals("-10002",     TextUtil.doubleToString(-1.0001500001e4));
 194                 assertEquals("-10001",     TextUtil.doubleToString(-1.0001499999e4));
 195                 assertEquals("-100012",    TextUtil.doubleToString(-1.00011500001e5));
 196                 assertEquals("-100011",    TextUtil.doubleToString(-1.00011499999e5));
 197                 assertEquals("-1000112",   TextUtil.doubleToString(-1.000111500001e6));
 198                 assertEquals("-1000111",   TextUtil.doubleToString(-1.000111499999e6));
 199                 assertEquals("-10001112",  TextUtil.doubleToString(-1.0001111500001e7));
 200                 assertEquals("-10001111",  TextUtil.doubleToString(-1.0001111499999e7));
 201                 assertEquals("-1.0002e8",  TextUtil.doubleToString(-1.0001500001e8));
 202                 assertEquals("-1.0001e8",  TextUtil.doubleToString(-1.0001499999e8));
 203                 assertEquals("-1.0002e9",  TextUtil.doubleToString(-1.0001500001e9));
 204                 assertEquals("-1.0001e9",  TextUtil.doubleToString(-1.0001499999e9));
 205                 assertEquals("-1.0002e10", TextUtil.doubleToString(-1.0001500001e10));
 206                 assertEquals("-1.0001e10", TextUtil.doubleToString(-1.0001499999e10));
 207
 208         }
 209
 210 }