Update error messages and test names

src/test/java/com/mattrixwv/cipherstream/exceptions/InvalidCharacterExceptionTest.java

@@ -0,0 +1,45 @@
+//CipherStreamJava/src/test/java/com/mattrixwv/cipherstream/exceptions/TestInvalidcharacterException.java
+//Mattrixwv
+// Created: 04-14-23
+//Modified: 04-19-24
+package com.mattrixwv.cipherstream.exceptions;
+
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import org.junit.jupiter.api.Test;
+
+
+public class InvalidCharacterExceptionTest{
+	private String message = "message";
+	private Throwable cause = new Exception();
+
+
+	@Test
+	public void testConstructor_default(){
+		InvalidCharacterException exception = new InvalidCharacterException();
+		assertNull(exception.getMessage());
+		assertNull(exception.getCause());
+	}
+
+	@Test
+	public void testConstructor_message(){
+		InvalidCharacterException exception = new InvalidCharacterException(message);
+		assertEquals(message, exception.getMessage());
+		assertNull(exception.getCause());
+	}
+
+	@Test
+	public void testConstructor_cause(){
+		InvalidCharacterException exception = new InvalidCharacterException(cause);
+		assertEquals(cause.toString(), exception.getMessage());
+		assertEquals(cause, exception.getCause());
+	}
+
+	@Test
+	public void testConstructor_messageAndCause(){
+		InvalidCharacterException exception = new InvalidCharacterException(message, cause);
+		assertEquals(message, exception.getMessage());
+		assertEquals(cause, exception.getCause());
+	}
+}