patch for `array-init` that adds tests from `arraylib` which fail with `arraylib` under miri

0001-add-tests-from-arraylib-which-fail-under-miri-there.patch

From eff7dc0d51d64fa2c55c44f0244ab3474751f6f5 Mon Sep 17 00:00:00 2001
From: Waffle <waffle.lapkin@gmail.com>
Date: Fri, 20 Mar 2020 11:12:11 +0300
Subject: [PATCH] add tests from `arraylib` which fail under miri there

---
 src/lib.rs | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 58 insertions(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index fb2f6a5..4e18b48 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,4 @@
-#![no_std]
+#![cfg_attr(not(test), no_std)]

 //! The `array-init` crate allows you to initialize arrays
 //! with an initializer closure that will be called
@@ -408,4 +408,61 @@ mod tests {
             }
         }
     }
+
+
+
+
+
+
+
+
+    // added tests ============================================
+
+    use std::sync::Mutex;
+
+    /// Add `1` to mutex on drop
+    #[derive(Debug)]
+    struct DropCount<'a>(&'a Mutex<usize>);
+
+    impl<'a> Drop for DropCount<'a> {
+        fn drop(&mut self) {
+            let mut guard = self.0.lock().unwrap();
+            *guard += 1;
+        }
+    }
+
+     #[test]
+    fn drop_on_panic() {
+        let counter = Mutex::new(0);
+
+        let r = std::panic::catch_unwind(|| {
+            let _: [DropCount; 16] = array_init(|i| {
+                if i == 10 {
+                    panic!()
+                } else {
+                    DropCount(&counter)
+                }
+            });
+        });
+
+        assert!(r.is_err());
+        assert_eq!(*counter.lock().unwrap(), 10);
+    }
+
+    //#[cfg(not(miri))]
+    #[test]
+    fn drop_on_fail() {
+        let counter = Mutex::new(0);
+
+        let r: Result<[DropCount; 16], ()> = try_array_init(|i| {
+            if i == 10 {
+                Err(())
+            } else {
+                Ok(DropCount(&counter))
+            }
+        });
+
+        assert!(r.is_err());
+        assert_eq!(*counter.lock().unwrap(), 10);
+    }
 }
--
2.25.1