1 files changed, 61 insertions, 0 deletions
diff --git a/tests/rust/bitflags.rs b/tests/rust/bitflags.rs
new file mode 100644
index 0000000..cba8377
--- /dev/null
+++ b/tests/rust/bitflags.rs
@@ -0,0 +1,61 @@
+bitflags! {
+    /// Constants shared by multiple CSS Box Alignment properties
+    ///
+    /// These constants match Gecko's `NS_STYLE_ALIGN_*` constants.
+    #[derive(MallocSizeOf)]
+    #[repr(C)]
+    pub struct AlignFlags: u8 {
+        /// 'auto'
+        const AUTO = 0;
+        /// 'normal'
+        const NORMAL = 1;
+        /// 'start'
+        const START = 1 << 1;
+        /// 'end'
+        const END = 1 << 2;
+        const ALIAS = Self::END.bits();
+        /// 'flex-start'
+        const FLEX_START = 1 << 3;
+        const MIXED = 1 << 4 | AlignFlags::FLEX_START.bits() | AlignFlags::END.bits();
+        const MIXED_SELF = 1 << 5 | AlignFlags::FLEX_START.bits() | AlignFlags::END.bits();
+    }
+}
+
+bitflags! {
+    #[repr(C)]
+    pub struct DebugFlags: u32 {
+        /// Flag with the topmost bit set of the u32
+        const BIGGEST_ALLOWED = 1 << 31;
+    }
+}
+
+bitflags! {
+    #[repr(C)]
+    pub struct LargeFlags: u64 {
+        /// Flag with a very large shift that usually would be narrowed.
+        const LARGE_SHIFT = 1u64 << 44;
+        const INVERTED = !Self::LARGE_SHIFT.bits();
+    }
+}
+
+// bitflags 2 allows to define types out-of-line for custom derives
+// #[derive(SomeTrait)]
+#[repr(C)]
+pub struct OutOfLine(u32);
+
+bitflags! {
+    impl OutOfLine: u32 {
+        const A = 1;
+        const B = 2;
+        const AB = Self::A.bits() | Self::B.bits();
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn root(
+    flags: AlignFlags,
+    bigger_flags: DebugFlags,
+    largest_flags: LargeFlags,
+    out_of_line: OutOfLine,
+) {
+}