Move /src/test to /tests

tests/ui/traits/impl-different-num-params.rs

@@ -0,0 +1,12 @@
+trait Foo {
+    fn bar(&self, x: usize) -> Self;
+}
+impl Foo for isize {
+    fn bar(&self) -> isize {
+        //~^ ERROR method `bar` has 1 parameter but the declaration in trait `Foo::bar` has 2
+        *self
+    }
+}
+
+fn main() {
+}