Add deprecation tests for deprecated tool lints

Author: phansch

tests/ui/deprecated.rs

@@ -0,0 +1,9 @@
+#[warn(clippy::str_to_string)]
+#[warn(clippy::string_to_string)]
+#[warn(clippy::unstable_as_slice)]
+#[warn(clippy::unstable_as_mut_slice)]
+#[warn(clippy::misaligned_transmute)]
+#[warn(clippy::unused_collect)]
+#[warn(clippy::invalid_ref)]
+
+fn main() {}

tests/ui/deprecated.stderr

@@ -0,0 +1,46 @@
+error: lint `clippy::str_to_string` has been removed: `using `str::to_string` is common even today and specialization will likely happen soon`
+  --> $DIR/deprecated.rs:1:8
+   |
+LL | #[warn(clippy::str_to_string)]
+   |        ^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: `-D renamed-and-removed-lints` implied by `-D warnings`
+
+error: lint `clippy::string_to_string` has been removed: `using `string::to_string` is common even today and specialization will likely happen soon`
+  --> $DIR/deprecated.rs:2:8
+   |
+LL | #[warn(clippy::string_to_string)]
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: lint `clippy::unstable_as_slice` has been removed: ``Vec::as_slice` has been stabilized in 1.7`
+  --> $DIR/deprecated.rs:3:8
+   |
+LL | #[warn(clippy::unstable_as_slice)]
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: lint `clippy::unstable_as_mut_slice` has been removed: ``Vec::as_mut_slice` has been stabilized in 1.7`
+  --> $DIR/deprecated.rs:4:8
+   |
+LL | #[warn(clippy::unstable_as_mut_slice)]
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: lint `clippy::misaligned_transmute` has been removed: `this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr`
+  --> $DIR/deprecated.rs:5:8
+   |
+LL | #[warn(clippy::misaligned_transmute)]
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: lint `clippy::invalid_ref` has been removed: `superseded by rustc lint `invalid_value``
+  --> $DIR/deprecated.rs:7:8
+   |
+LL | #[warn(clippy::invalid_ref)]
+   |        ^^^^^^^^^^^^^^^^^^^
+
+error: lint `clippy::str_to_string` has been removed: `using `str::to_string` is common even today and specialization will likely happen soon`
+  --> $DIR/deprecated.rs:1:8
+   |
+LL | #[warn(clippy::str_to_string)]
+   |        ^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to 7 previous errors
+