Move /src/test to /tests

tests/ui/rfc-2632-const-trait-impl/impl-with-default-fn-fail.rs

@@ -0,0 +1,17 @@
+#![feature(const_trait_impl)]
+
+#[const_trait]
+trait Tr {
+    fn req(&self);
+
+    fn default() {}
+}
+
+struct S;
+
+impl const Tr for u16 {
+    fn default() {}
+} //~^^ ERROR not all trait items implemented
+
+
+fn main() {}