Stack underflow exception test

test/test.cpp

@@ -51,17 +51,15 @@ TEST_CASE( "Basic power function test", "[calc]") {
   REQUIRE( evaluate("25^") == 32 );
 }
 
-TEST_CASE( "Parameters are misaligned and excpetion is thrown", "[calc]") {
+TEST_CASE( "Stack underflow exception test", "[calc]") {
 //   REQUIRE_THROWS( evaluate("40*/") );
 //   REQUIRE_THROWS( evaluate("14--") );
 //   REQUIRE_THROWS( evaluate("1+1") );
 //   REQUIRE_THROWS( evaluate("+11") );
+//   REQUIRE_THROWS( evaluate("11+3-+4") );
+//   REQUIRE_THROWS( evaluate("11/3*+4") );
 }
 
-TEST_CASE( "Two Operants in a row are detected and exception is thrown", "[calc]") {
-  //REQUIRE_THROWS( evaluate("11+3-+4") );
-  //REQUIRE_THROWS( evaluate("11/3*+4") );
-}
 
 TEST_CASE( "Unrecognized characters are detected and exception is thrown", "[calc]") {
   REQUIRE_THROWS( evaluate("11+3?4") );