refactor: tests: add reorder_derives test

Author: fw-immunant

c2rust-refactor/tests/reorder_derives/new.rs

@@ -0,0 +1,26 @@
+#![allow(
+    dead_code,
+    non_camel_case_types,
+    non_snake_case,
+    non_upper_case_globals,
+    unused_assignments,
+    unused_mut
+)]
+
+#[derive(Copy, Clone)]
+#[repr(C)]
+pub struct S0 {}
+
+#[derive(Clone)]
+#[repr(u8)]
+#[derive(Copy)]
+#[derive(Debug)]
+pub struct S1 {}
+
+#[cfg(not(test))]
+#[derive(Debug, Copy, Clone)]
+#[repr(u32)]
+pub struct S2 {}
+
+#[derive(Debug)]
+pub struct S3 {}

c2rust-refactor/tests/reorder_derives/old.rs

@@ -0,0 +1,26 @@
+#![allow(
+    dead_code,
+    non_camel_case_types,
+    non_snake_case,
+    non_upper_case_globals,
+    unused_assignments,
+    unused_mut
+)]
+
+#[derive(Copy, Clone)]
+#[repr(C)]
+pub struct S0 {}
+
+#[derive(Clone)]
+#[repr(u8)]
+#[derive(Copy)]
+#[derive(Debug)]
+pub struct S1 {}
+
+#[cfg(not(test))]
+#[derive(Debug, Copy, Clone)]
+#[repr(u32)]
+pub struct S2 {}
+
+#[derive(Debug)]
+pub struct S3 {}

c2rust-refactor/tests/reorder_derives/run.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+# work around System Integrity Protection on macOS
+if [ `uname` = 'Darwin' ]; then
+    export LD_LIBRARY_PATH=$not_LD_LIBRARY_PATH
+fi
+
+$refactor \
+    test_one_plus_one \
+    -- old.rs $rustflags