Move /src/test to /tests

tests/ui/enum/enum-and-module-in-same-scope.rs

@@ -0,0 +1,10 @@
+enum Foo {
+    X
+}
+
+mod Foo { //~ ERROR the name `Foo` is defined multiple times
+    pub static X: isize = 42;
+    fn f() { f() } // Check that this does not result in a resolution error
+}
+
+fn main() {}