Add print test for if

Author: antonmedv

ast/print_test.go

@@ -83,6 +83,7 @@ func TestPrint(t *testing.T) {
 		{`(2 ** 2) ** 3`, `(2 ** 2) ** 3`},
 		{`(3 + 5) / (5 % 3)`, `(3 + 5) / (5 % 3)`},
 		{`(-(1+1)) == 2`, `-(1 + 1) == 2`},
+		{`if true { 1 } else { 2 }`, `true ? 1 : 2`},
 	}
 
 	for _, tt := range tests {