@@ -20,10 +20,11 @@
 }
 
 unittest
 {
-	assert( sprintf!"%s == %d"("1+2", 3)   == "1+2 == 3" );
-	assert( sprintf!"%s == %04d"("1+2", 3) == "1+2 == 0003" );
+	assert_eq( sprintf!"%s == %04d"("1+2", 3), "1+2 == 0003" );
+	assert_eq( sprintf!"%2$s == %1$s"("1+2", 5, 8), "5 == 1+2" );
+	assert_throw!Error( sprintf!"%s%s"(1) );
 }
 
 /// Create an exception with automatically completed filename and lineno information