Move /src/test to /tests

tests/rustdoc-ui/coverage/private.rs

@@ -0,0 +1,21 @@
+// compile-flags:-Z unstable-options --show-coverage --document-private-items
+// check-pass
+
+#![allow(unused)]
+
+//! when `--document-private-items` is passed, nothing is safe. everything must have docs or your
+//! score will suffer the consequences
+
+mod this_mod {
+    fn private_fn() {}
+}
+
+/// See, our public items have docs!
+pub struct SomeStruct {
+    /// Look, all perfectly documented!
+    pub field: usize,
+    other: usize,
+}
+
+/// Nothing shady going on here. Just a bunch of well-documented code. (cough)
+pub fn public_fn() {}