Increase test coverage (fixes #3895 #3896) (#3897)

src/test/java/com/thealgorithms/others/CRCAlgorithmTest.java

@@ -0,0 +1,29 @@
+
+package com.thealgorithms.others;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class CRCAlgorithmTest {
+
+    @Test
+    void test1(){
+        CRCAlgorithm c = new CRCAlgorithm("10010101010100101010010000001010010101010", 10, 0.0);
+
+        //A bit-error rate of 0.0 should not provide any wrong messages
+        c.changeMess();
+        c.divideMessageWithP(false);
+        assertEquals(c.getWrongMess(), 0);
+    }
+
+    @Test
+    void test2(){
+        CRCAlgorithm c = new CRCAlgorithm("10010101010100101010010000001010010101010", 10, 1.0);
+
+        //A bit error rate of 1.0 should not provide any correct messages
+        c.changeMess();
+        c.divideMessageWithP(false);
+        assertEquals(c.getCorrectMess(), 0);
+    }
+}