Implemented tests

Author: Fynn Henck

src/main/java/com/compiler/ExpressionEvaluator.java

@@ -126,6 +126,7 @@ int getCompareExpr() throws Exception {
         ) {
             TokenIntf.Type tokenType = m_lexer.lookAhead().m_type;
             m_lexer.advance();
+
             switch (tokenType){
                 case GREATER:
                     if(input > getShiftExpr()){

src/test/java/com/compiler/getCompareExprTest.java

@@ -0,0 +1,24 @@
+package com.compiler;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+public class getCompareExprTest extends TestExpressionEvaluatorBase{
+
+    @Test
+    public void testCompareExprTest() throws Exception {
+        // Check Java Compiler vs. unser Compiler
+        assertEquals(1, evalExpression("4>1"));
+        assertEquals(0, evalExpression("4<1"));
+
+        // Check Ergebnis vs. unser Compiler
+        assertEquals(0, evalExpression("5==2"));
+        assertEquals(1, evalExpression("2==2"));
+
+        // Komplexere Ausdrücke
+        assertEquals(1, evalExpression("1>0=0"));
+        assertEquals(0, evalExpression("1<0=0"));
+    }
+
+}