Arithmetic

vm/vm_test.go

@@ -33,7 +33,7 @@ func runVmTests(t *testing.T, tests []vmTestCase) {
 			t.Fatalf("vm error: %s", err)
 		}
 
-		stackElem := vm.StackTop()
+		stackElem := vm.LastPoppedStackElem()
 
 		testExpectedObject(t, tt.expected, stackElem)
 	}
@@ -75,6 +75,14 @@ func TestIntegerArithmetic(t *testing.T) {
 		{"1", 1},
 		{"2", 2},
 		{"1 + 2", 3},
+		{"1 * 2", 2},
+		{"4 / 2", 2},
+		{"50 / 2 * 2 + 10 - 5", 55},
+		{"5 + 5 + 5 + 5 - 10", 10},
+		{"2 * 2 * 2 * 2 * 2", 32},
+		{"5 * 2 + 10", 20},
+		{"5 + 2 * 10", 25},
+		{"5 * (2 + 10)", 60},
 	}
 
 	runVmTests(t, tests)