1 files changed, 116 insertions, 0 deletions
diff --git a/tests/overwriting_core_crate.rs b/tests/overwriting_core_crate.rs
new file mode 100644
index 0000000..121104c
--- /dev/null
+++ b/tests/overwriting_core_crate.rs
@@ -0,0 +1,116 @@
+#![warn(rust_2018_idioms, single_use_lifetimes)]
+
+// See https://github.com/rust-lang/pin-utils/pull/26#discussion_r344491597
+//
+// Note: If the proc-macro does not depend on its own items, it may be preferable not to
+//       support overwriting the name of core/std crate for compatibility with reexport.
+#[allow(unused_extern_crates)]
+extern crate pin_project as core;
+
+// Dummy module to check that the expansion refers to the crate.
+mod pin_project {}
+
+use ::pin_project::{pin_project, pinned_drop, UnsafeUnpin};
+use std::pin::Pin;
+
+#[pin_project]
+pub struct StructDefault<T, U> {
+    #[pin]
+    pub pinned: T,
+    pub unpinned: U,
+}
+
+#[pin_project(PinnedDrop)]
+pub struct StructPinnedDrop<T, U> {
+    #[pin]
+    pub pinned: T,
+    pub unpinned: U,
+}
+
+#[pinned_drop]
+impl<T, U> PinnedDrop for StructPinnedDrop<T, U> {
+    fn drop(self: Pin<&mut Self>) {}
+}
+
+#[pin_project(Replace)]
+pub struct StructReplace<T, U> {
+    #[pin]
+    pub pinned: T,
+    pub unpinned: U,
+}
+
+#[pin_project(UnsafeUnpin)]
+pub struct StructUnsafeUnpin<T, U> {
+    #[pin]
+    pub pinned: T,
+    pub unpinned: U,
+}
+
+unsafe impl<T: Unpin, U> UnsafeUnpin for StructUnsafeUnpin<T, U> {}
+
+#[pin_project(!Unpin)]
+pub struct StructNotUnpin<T, U> {
+    #[pin]
+    pub pinned: T,
+    pub unpinned: U,
+}
+
+#[pin_project]
+pub enum EnumDefault<T, U> {
+    Struct {
+        #[pin]
+        pinned: T,
+        unpinned: U,
+    },
+    Tuple(#[pin] T, U),
+}
+
+#[pin_project(PinnedDrop)]
+pub enum EnumPinnedDrop<T, U> {
+    Struct {
+        #[pin]
+        pinned: T,
+        unpinned: U,
+    },
+    Tuple(#[pin] T, U),
+}
+
+#[pinned_drop]
+impl<T, U> PinnedDrop for EnumPinnedDrop<T, U> {
+    fn drop(self: Pin<&mut Self>) {}
+}
+
+#[pin_project(Replace)]
+pub enum EnumReplace<T, U> {
+    Struct {
+        #[pin]
+        pinned: T,
+        unpinned: U,
+    },
+    Tuple(#[pin] T, U),
+}
+
+#[pin_project(UnsafeUnpin)]
+pub enum EnumUnsafeUnpin<T, U> {
+    Struct {
+        #[pin]
+        pinned: T,
+        unpinned: U,
+    },
+    Tuple(#[pin] T, U),
+}
+
+unsafe impl<T: Unpin, U> UnsafeUnpin for EnumUnsafeUnpin<T, U> {}
+
+#[pin_project(!Unpin)]
+pub enum EnumNotUnpin<T, U> {
+    Struct {
+        #[pin]
+        pinned: T,
+        unpinned: U,
+    },
+    Tuple(#[pin] T, U),
+}
+
+#[test]
+fn test() {}