add test case

Author: sidhant92

src/test/java/com/github/sidhant92/boolparser/application/BooleanExpressionEvaluatorTest.java

@@ -166,6 +166,15 @@ public void testNumericGreaterThanIncorrectExpression() {
         assertFalse(booleanOptional.get());
     }
 
+    @Test
+    public void testDifferentDataTypesComparison() {
+        final Map<String, Object> data = new HashMap<>();
+        data.put("age", 26.6);
+        final Try<Boolean> booleanOptional = booleanExpressionEvaluator.evaluate("age > 20", data);
+        assertTrue(booleanOptional.isSuccess());
+        assertTrue(booleanOptional.get());
+    }
+
     @Test
     public void testNumericGreaterThanEqualCorrectExpression() {
         final Map<String, Object> data = new HashMap<>();