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VlInt初步测试

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zhaofeng233
2021-03-12 17:43:50 +08:00
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src/test/java/encoding/VlIntTest.java
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package encoding;
import org.junit.Test;
import org.junit.runner.RunWith;
import java.math.BigInteger;
import static org.junit.Assert.*;
/*
* @Author: feng Zhao
* @Description:
* @Version: 1.0.0
* @Date: 12:28 2021/3/12
* @Copyright: MIN-Group；国家重大科技基础设施——未来网络北大实验室；深圳市信息论与未来网络重点实验室
*/
public class VlIntTest {
// @Test
// public void size() {
// }
//
// @Test
// public void createVlInt() {
// }
//
// @Test
// public void createVlIntByBigInteger() {
// }
@Test
public void getVlIntBytes() {
byte[] a = new byte[]{1,2,3,4};
VlInt vlInt_byte = new VlInt(a);
byte[] b = new byte[]{1,2,3,5};
assertArrayEquals(vlInt_byte.getVlIntBytes(),a);
assertFalse(vlInt_byte.getVlIntBytes().equals(b));
}
@Test
public void getVlIntValue2Int() {
//vlint(int)的size小于4时，测试是否能准确转为int输出
int a = 222;
int b = 22222222;
VlInt vlInt_int1 = new VlInt(a);
VlInt vlInt_int2 = new VlInt(b);
//测试size大小
assertTrue(vlInt_int1.size()<4);
assertFalse(vlInt_int2.size()<4);
//测试VlIntValue是否转为int
assertEquals(vlInt_int1.getVlIntValue2Int(),a);
}
@Test
public void getVlIntValue2Long() {
long l1 = new Long(0);
long l2 = new Long(1);
long l3 = new Long(4294967295L); //2^32-1
long l4 = new Long(4294967296L); //2^32
VlInt vlInt_long1 = new VlInt(l1); // size = 1
VlInt vlInt_long2 = new VlInt(l2); // size = 1
VlInt vlInt_long3 = new VlInt(l3); // size = 5
VlInt vlInt_long4 = new VlInt(l4); // size = 9
assertTrue(vlInt_long3.size()<8);
assertFalse(vlInt_long4.size()<8);
assertEquals(vlInt_long1.getVlIntValue2Long(),l1);
assertEquals(vlInt_long2.getVlIntValue2Long(),l2);
assertEquals(vlInt_long3.getVlIntValue2Long(),l3);
}
@Test
public void getVlIntValue() {
long l1 = new Long(4294967295L); //2^32-1
long l2 = new Long(4294967296L); //2^32
BigInteger b = BigInteger.valueOf(4294967296L);//2^32
VlInt vlInt_long = new VlInt(l1);
VlInt vlInt_long2 = new VlInt(l2);
VlInt vlInt_bigInteger = new VlInt(b);
//判断size
assertFalse(vlInt_long.size()>=9);
assertTrue(vlInt_long2.size()>=9);
assertTrue(vlInt_bigInteger.size()>=9);
//判断值是否相等
assertEquals(vlInt_bigInteger.getVlIntValue(),b);
}
@Test
public void isEqual() {
int a1 = 1;
int a2 = 65535;
int a2_test = 66666;
long a3 = 4294967295L;
long a4 = 4294967296L;
VlInt vlInt1 = new VlInt(a1); //size = 1
VlInt vlInt_test = new VlInt(a1);
VlInt vlInt2 = new VlInt(a2); //size = 3
VlInt vlInt3 = new VlInt(a3); //size = 5
VlInt vlInt4 = new VlInt(a4); //size = 9
assertTrue(vlInt1.isEqual(vlInt_test));
assertTrue(vlInt2.isEqual(a2));
assertFalse(vlInt2.isEqual(a2_test));
assertTrue(vlInt3.isEqual(a3));
assertTrue(vlInt4.isEqual(a4));
}
@Test
public void compareTo() {//小于：-1 大于：1 等于0
//param:vlInt
VlInt vlInt1 = new VlInt(1);
VlInt vlInt2 = new VlInt(1);
VlInt vlInt3 = new VlInt(4294967296L);
assertEquals(vlInt1.compareTo(vlInt2),0);
assertEquals(vlInt1.compareTo(vlInt3),-1);
//param:int
int a1 = 1,a2 = 2;
assertEquals(vlInt1.compareTo(a1),0);
assertEquals(vlInt1.compareTo(a2),-1);
//param:long
long l1=4294967295L,l2=4294967296L;
VlInt v = new VlInt(l2);
assertEquals(v.compareTo(l1),1);
assertEquals(v.compareTo(l2),0);
}
//todo:暂没考虑两者差、两者和 越界int最大值的问题
@Test
public void subtract_add() {
int a1 = 0,a2 = 65535;
long l = 4294967296L;
int s1 = a2-a1,s2 = a1-a2;
// long r1 = l-a1,r2 = l-a2; //差值越界int最大值
VlInt vlInt1 = new VlInt(a1);
VlInt vlInt2 = new VlInt(a2);
VlInt vlInt3 = new VlInt(l);
assertEquals(vlInt2.subtract(vlInt1),s1);
assertEquals(vlInt1.subtract(vlInt2),s2); //差为负数
//error:差值越界int最大值
// assertEquals(vlInt3.subtract(vlInt2),r1);
int sum1 = a1+a2;
long sum2 = a2+l;
//param：VlInt
assertEquals(vlInt1.add(vlInt2),sum1);
// assertEquals(vlInt1.add(vlInt3),sum2); //两者之和为long，越界int最大值
//param：int
assertEquals(vlInt1.add(a2),sum1);
}
// @Test
// public void bigInteger2vlintBytes(){
// BigInteger a1 = BigInteger.valueOf(0);
// BigInteger a2 = BigInteger.valueOf(240);
// BigInteger a3 = BigInteger.valueOf(242);
// BigInteger a4 = BigInteger.valueOf(256);
// BigInteger a5 = BigInteger.valueOf(65535);
// BigInteger a6 = BigInteger.valueOf(65536);
// BigInteger a7 = BigInteger.valueOf(4294967295L);
// BigInteger a8 = BigInteger.valueOf(4294967296L);
// byte[] b1 = new byte[]{0x00}; //0:size=1
// byte[] b2 = new byte[]{(byte)0xf0}; //240<241:size=1
// byte[] b3 = new byte[]{(byte)0xf2}; //242:size=3
// byte[] b4 =new byte[]{0x01, 0x00}; //256:size=3
// byte[] b5 = new byte[]{(byte) 0xff, (byte) 0xff};//65535<2^16:size=3
// byte[] b6 = new byte[]{0x00,0x01,0x00,0x00}; //65536:size=5
// //4294967295<2^32:size=5
// byte[] b7 = new byte[]{(byte) 0xff,(byte) 0xff,(byte) 0xff,(byte) 0xff};
// //4294967296>=2^32:size=9
// byte[] b8 = new byte[]{0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x00};
//
//
// }
//
// @Test
// public void vlintBytes2bigInteger(){
//
// }
}