package net.sf.openrocket.util;
import static java.lang.Math.PI;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import java.nio.charset.Charset;
import java.util.Random;
import org.junit.Test;
public class TextUtilTest {
@Test
public void testConvertStringToBytes() {
Charset us_ascii = Charset.forName("US-ASCII");
byte[] ZIP_SIGNATURE_CORRECT = "PK".getBytes(us_ascii);
byte[] ZIP_SIGNATURE_TEST = TextUtil.asciiBytes("PK");
assertArrayEquals(ZIP_SIGNATURE_CORRECT, ZIP_SIGNATURE_TEST);
byte[] OPENROCKET_SIGNATURE_CORRECT = "<openrocket".getBytes(us_ascii);
byte[] OPENROCKET_SIGNATURE_TEST = TextUtil.asciiBytes("<openrocket");
assertArrayEquals(OPENROCKET_SIGNATURE_CORRECT, OPENROCKET_SIGNATURE_TEST);
byte[] ROCKSIM_SIGNATURE_CORRECT = "<RockSimDoc".getBytes(us_ascii);
byte[] ROCKSIM_SIGNATURE_TEST = TextUtil.asciiBytes("<RockSimDoc");
assertArrayEquals(ROCKSIM_SIGNATURE_CORRECT, ROCKSIM_SIGNATURE_TEST);
}
@Test
public void testHexString() {
assertEquals("", TextUtil.hexString(new byte[0]));
assertEquals("00", TextUtil.hexString(new byte[] { 0x00 }));
assertEquals("ff", TextUtil.hexString(new byte[] { (byte) 0xff }));
for (int i = 0; i <= 0xff; i++) {
assertEquals(String.format("%02x", i), TextUtil.hexString(new byte[] { (byte) i }));
}
assertEquals("0f1e2d3c4b5a6978", TextUtil.hexString(new byte[] {
0x0f, 0x1e, 0x2d, 0x3c, 0x4b, 0x5a, 0x69, 0x78
}));
Random rnd = new Random();
for (int count = 0; count < 10; count++) {
int n = rnd.nextInt(100);
byte[] bytes = new byte[n];
rnd.nextBytes(bytes);
StringBuilder sb = new StringBuilder();
for (byte b : bytes) {
sb.append(String.format("%02x", b & 0xFF));
}
assertEquals(sb.toString(), TextUtil.hexString(bytes));
}
}
@Test
public void specialCaseTest() {
assertEquals("NaN", TextUtil.doubleToString(Double.NaN));
assertEquals("Inf", TextUtil.doubleToString(Double.POSITIVE_INFINITY));
assertEquals("-Inf", TextUtil.doubleToString(Double.NEGATIVE_INFINITY));
assertEquals("0", TextUtil.doubleToString(0.0));
assertEquals("0", TextUtil.doubleToString(MathUtil.EPSILON / 3));
assertEquals("0", TextUtil.doubleToString(-MathUtil.EPSILON / 3));
}
@Test
public void longTest() {
assertEquals("3.1416e-5", TextUtil.doubleToString(PI * 1e-5));
assertEquals("3.1416e-4", TextUtil.doubleToString(PI * 1e-4));
assertEquals("0.0031416", TextUtil.doubleToString(PI * 1e-3));
assertEquals("0.031416", TextUtil.doubleToString(PI * 1e-2));
assertEquals("0.31416", TextUtil.doubleToString(PI * 1e-1));
assertEquals("3.1416", TextUtil.doubleToString(PI));
assertEquals("31.416", TextUtil.doubleToString(PI * 1e1));
assertEquals("314.16", TextUtil.doubleToString(PI * 1e2));
assertEquals("3141.6", TextUtil.doubleToString(PI * 1e3));
assertEquals("31416", TextUtil.doubleToString(PI * 1e4));
assertEquals("314159", TextUtil.doubleToString(PI * 1e5));
assertEquals("3141593", TextUtil.doubleToString(PI * 1e6));
assertEquals("31415927", TextUtil.doubleToString(PI * 1e7));
assertEquals("3.1416e8", TextUtil.doubleToString(PI * 1e8));
assertEquals("3.1416e9", TextUtil.doubleToString(PI * 1e9));
assertEquals("3.1416e10", TextUtil.doubleToString(PI * 1e10));
assertEquals("-3.1416e-5", TextUtil.doubleToString(-PI * 1e-5));
assertEquals("-3.1416e-4", TextUtil.doubleToString(-PI * 1e-4));
assertEquals("-0.0031416", TextUtil.doubleToString(-PI * 1e-3));
assertEquals("-0.031416", TextUtil.doubleToString(-PI * 1e-2));
assertEquals("-0.31416", TextUtil.doubleToString(-PI * 1e-1));
assertEquals("-3.1416", TextUtil.doubleToString(-PI));
assertEquals("-31.416", TextUtil.doubleToString(-PI * 1e1));
assertEquals("-314.16", TextUtil.doubleToString(-PI * 1e2));
assertEquals("-3141.6", TextUtil.doubleToString(-PI * 1e3));
assertEquals("-31416", TextUtil.doubleToString(-PI * 1e4));
assertEquals("-314159", TextUtil.doubleToString(-PI * 1e5));
assertEquals("-3141593", TextUtil.doubleToString(-PI * 1e6));
assertEquals("-31415927", TextUtil.doubleToString(-PI * 1e7));
assertEquals("-3.1416e8", TextUtil.doubleToString(-PI * 1e8));
assertEquals("-3.1416e9", TextUtil.doubleToString(-PI * 1e9));
assertEquals("-3.1416e10", TextUtil.doubleToString(-PI * 1e10));
}
@Test
public void shortTest() {
double p = 3.1;
assertEquals("3.1e-5", TextUtil.doubleToString(p * 1e-5));
assertEquals("3.1e-4", TextUtil.doubleToString(p * 1e-4));
assertEquals("0.0031", TextUtil.doubleToString(p * 1e-3));
assertEquals("0.031", TextUtil.doubleToString(p * 1e-2));
assertEquals("0.31", TextUtil.doubleToString(p * 1e-1));
assertEquals("3.1", TextUtil.doubleToString(p));
assertEquals("31", TextUtil.doubleToString(p * 1e1));
assertEquals("310", TextUtil.doubleToString(p * 1e2));
assertEquals("3100", TextUtil.doubleToString(p * 1e3));
assertEquals("31000", TextUtil.doubleToString(p * 1e4));
assertEquals("3.1e5", TextUtil.doubleToString(p * 1e5));
assertEquals("3.1e6", TextUtil.doubleToString(p * 1e6));
assertEquals("3.1e7", TextUtil.doubleToString(p * 1e7));
assertEquals("3.1e8", TextUtil.doubleToString(p * 1e8));
assertEquals("3.1e9", TextUtil.doubleToString(p * 1e9));
assertEquals("3.1e10", TextUtil.doubleToString(p * 1e10));
assertEquals("-3.1e-5", TextUtil.doubleToString(-p * 1e-5));
assertEquals("-3.1e-4", TextUtil.doubleToString(-p * 1e-4));
assertEquals("-0.0031", TextUtil.doubleToString(-p * 1e-3));
assertEquals("-0.031", TextUtil.doubleToString(-p * 1e-2));
assertEquals("-0.31", TextUtil.doubleToString(-p * 1e-1));
assertEquals("-3.1", TextUtil.doubleToString(-p));
assertEquals("-31", TextUtil.doubleToString(-p * 1e1));
assertEquals("-310", TextUtil.doubleToString(-p * 1e2));
assertEquals("-3100", TextUtil.doubleToString(-p * 1e3));
assertEquals("-31000", TextUtil.doubleToString(-p * 1e4));
assertEquals("-3.1e5", TextUtil.doubleToString(-p * 1e5));
assertEquals("-3.1e6", TextUtil.doubleToString(-p * 1e6));
assertEquals("-3.1e7", TextUtil.doubleToString(-p * 1e7));
assertEquals("-3.1e8", TextUtil.doubleToString(-p * 1e8));
assertEquals("-3.1e9", TextUtil.doubleToString(-p * 1e9));
assertEquals("-3.1e10", TextUtil.doubleToString(-p * 1e10));
p = 3;
assertEquals("3e-5", TextUtil.doubleToString(p * 1e-5));
assertEquals("3e-4", TextUtil.doubleToString(p * 1e-4));
assertEquals("3e-3", TextUtil.doubleToString(p * 1e-3));
assertEquals("0.03", TextUtil.doubleToString(p * 1e-2));
assertEquals("0.3", TextUtil.doubleToString(p * 1e-1));
assertEquals("3", TextUtil.doubleToString(p));
assertEquals("30", TextUtil.doubleToString(p * 1e1));
assertEquals("300", TextUtil.doubleToString(p * 1e2));
assertEquals("3e3", TextUtil.doubleToString(p * 1e3));
assertEquals("3e4", TextUtil.doubleToString(p * 1e4));
assertEquals("3e5", TextUtil.doubleToString(p * 1e5));
assertEquals("3e6", TextUtil.doubleToString(p * 1e6));
assertEquals("3e7", TextUtil.doubleToString(p * 1e7));
assertEquals("3e8", TextUtil.doubleToString(p * 1e8));
assertEquals("3e9", TextUtil.doubleToString(p * 1e9));
assertEquals("3e10", TextUtil.doubleToString(p * 1e10));
assertEquals("-3e-5", TextUtil.doubleToString(-p * 1e-5));
assertEquals("-3e-4", TextUtil.doubleToString(-p * 1e-4));
assertEquals("-3e-3", TextUtil.doubleToString(-p * 1e-3));
assertEquals("-0.03", TextUtil.doubleToString(-p * 1e-2));
assertEquals("-0.3", TextUtil.doubleToString(-p * 1e-1));
assertEquals("-3", TextUtil.doubleToString(-p));
assertEquals("-30", TextUtil.doubleToString(-p * 1e1));
assertEquals("-300", TextUtil.doubleToString(-p * 1e2));
assertEquals("-3e3", TextUtil.doubleToString(-p * 1e3));
assertEquals("-3e4", TextUtil.doubleToString(-p * 1e4));
assertEquals("-3e5", TextUtil.doubleToString(-p * 1e5));
assertEquals("-3e6", TextUtil.doubleToString(-p * 1e6));
assertEquals("-3e7", TextUtil.doubleToString(-p * 1e7));
assertEquals("-3e8", TextUtil.doubleToString(-p * 1e8));
assertEquals("-3e9", TextUtil.doubleToString(-p * 1e9));
assertEquals("-3e10", TextUtil.doubleToString(-p * 1e10));
}
@Test
public void roundingTest() {
assertEquals("1.001", TextUtil.doubleToString(1.00096));
/*
* Not testing with 1.00015 because it might be changed during number formatting
* calculations. Its rounding is basically arbitrary anyway.
*/
assertEquals("1.0002e-5", TextUtil.doubleToString(1.0001500001e-5));
assertEquals("1.0001e-5", TextUtil.doubleToString(1.0001499999e-5));
assertEquals("1.0002e-4", TextUtil.doubleToString(1.0001500001e-4));
assertEquals("1.0001e-4", TextUtil.doubleToString(1.0001499999e-4));
assertEquals("0.0010002", TextUtil.doubleToString(1.0001500001e-3));
assertEquals("0.0010001", TextUtil.doubleToString(1.0001499999e-3));
assertEquals("0.010002", TextUtil.doubleToString(1.0001500001e-2));
assertEquals("0.010001", TextUtil.doubleToString(1.0001499999e-2));
assertEquals("0.10002", TextUtil.doubleToString(1.0001500001e-1));
assertEquals("0.10001", TextUtil.doubleToString(1.0001499999e-1));
assertEquals("1.0002", TextUtil.doubleToString(1.0001500001));
assertEquals("1.0001", TextUtil.doubleToString(1.0001499999));
assertEquals("10.002", TextUtil.doubleToString(1.0001500001e1));
assertEquals("10.001", TextUtil.doubleToString(1.0001499999e1));
assertEquals("100.02", TextUtil.doubleToString(1.0001500001e2));
assertEquals("100.01", TextUtil.doubleToString(1.0001499999e2));
assertEquals("1000.2", TextUtil.doubleToString(1.0001500001e3));
assertEquals("1000.1", TextUtil.doubleToString(1.0001499999e3));
assertEquals("10002", TextUtil.doubleToString(1.0001500001e4));
assertEquals("10001", TextUtil.doubleToString(1.0001499999e4));
assertEquals("100012", TextUtil.doubleToString(1.00011500001e5));
assertEquals("100011", TextUtil.doubleToString(1.00011499999e5));
assertEquals("1000112", TextUtil.doubleToString(1.000111500001e6));
assertEquals("1000111", TextUtil.doubleToString(1.000111499999e6));
assertEquals("10001112", TextUtil.doubleToString(1.0001111500001e7));
assertEquals("10001111", TextUtil.doubleToString(1.0001111499999e7));
assertEquals("1.0002e8", TextUtil.doubleToString(1.0001500001e8));
assertEquals("1.0001e8", TextUtil.doubleToString(1.0001499999e8));
assertEquals("1.0002e9", TextUtil.doubleToString(1.0001500001e9));
assertEquals("1.0001e9", TextUtil.doubleToString(1.0001499999e9));
assertEquals("1.0002e10", TextUtil.doubleToString(1.0001500001e10));
assertEquals("1.0001e10", TextUtil.doubleToString(1.0001499999e10));
assertEquals("-1.0002e-5", TextUtil.doubleToString(-1.0001500001e-5));
assertEquals("-1.0001e-5", TextUtil.doubleToString(-1.0001499999e-5));
assertEquals("-1.0002e-4", TextUtil.doubleToString(-1.0001500001e-4));
assertEquals("-1.0001e-4", TextUtil.doubleToString(-1.0001499999e-4));
assertEquals("-0.0010002", TextUtil.doubleToString(-1.0001500001e-3));
assertEquals("-0.0010001", TextUtil.doubleToString(-1.0001499999e-3));
assertEquals("-0.010002", TextUtil.doubleToString(-1.0001500001e-2));
assertEquals("-0.010001", TextUtil.doubleToString(-1.0001499999e-2));
assertEquals("-0.10002", TextUtil.doubleToString(-1.0001500001e-1));
assertEquals("-0.10001", TextUtil.doubleToString(-1.0001499999e-1));
assertEquals("-1.0002", TextUtil.doubleToString(-1.0001500001));
assertEquals("-1.0001", TextUtil.doubleToString(-1.0001499999));
assertEquals("-10.002", TextUtil.doubleToString(-1.0001500001e1));
assertEquals("-10.001", TextUtil.doubleToString(-1.0001499999e1));
assertEquals("-100.02", TextUtil.doubleToString(-1.0001500001e2));
assertEquals("-100.01", TextUtil.doubleToString(-1.0001499999e2));
assertEquals("-1000.2", TextUtil.doubleToString(-1.0001500001e3));
assertEquals("-1000.1", TextUtil.doubleToString(-1.0001499999e3));
assertEquals("-10002", TextUtil.doubleToString(-1.0001500001e4));
assertEquals("-10001", TextUtil.doubleToString(-1.0001499999e4));
assertEquals("-100012", TextUtil.doubleToString(-1.00011500001e5));
assertEquals("-100011", TextUtil.doubleToString(-1.00011499999e5));
assertEquals("-1000112", TextUtil.doubleToString(-1.000111500001e6));
assertEquals("-1000111", TextUtil.doubleToString(-1.000111499999e6));
assertEquals("-10001112", TextUtil.doubleToString(-1.0001111500001e7));
assertEquals("-10001111", TextUtil.doubleToString(-1.0001111499999e7));
assertEquals("-1.0002e8", TextUtil.doubleToString(-1.0001500001e8));
assertEquals("-1.0001e8", TextUtil.doubleToString(-1.0001499999e8));
assertEquals("-1.0002e9", TextUtil.doubleToString(-1.0001500001e9));
assertEquals("-1.0001e9", TextUtil.doubleToString(-1.0001499999e9));
assertEquals("-1.0002e10", TextUtil.doubleToString(-1.0001500001e10));
assertEquals("-1.0001e10", TextUtil.doubleToString(-1.0001499999e10));
}
@Test
public void randomTest() {
for (int i = 0; i < 10000; i++) {
double orig = Math.random();
double result;
double expected = Math.rint(orig * 100000) / 100000.0;
if (orig < 0.1)
continue;
String s = TextUtil.doubleToString(orig);
result = Double.parseDouble(s);
assertEquals(expected, result, 0.00000001);
}
}
@Test
public void testEscapeXML() {
assertEquals("", TextUtil.escapeXML(""));
assertEquals("foo&bar", TextUtil.escapeXML("foo&bar"));
assertEquals("<html>&", TextUtil.escapeXML("<html>&"));
assertEquals(""'", TextUtil.escapeXML("\"'"));
assertEquals("foo\n\r\tbar", TextUtil.escapeXML("foo\n\r\tbar"));
assertEquals("foo� bar", TextUtil.escapeXML("foo" + ((char) 0) + ((char) 1) + ((char) 31) + ((char) 127) + "bar"));
}
}