Merge branch 'connection-manager-mut' into next

Refactor the connection management to prevent multiple device
connections at the same time.

RFC: https://lists.sr.ht/~ireas/nitrokey-rs-dev/%3C20190126174327.tbuyk2s535kfiqm4%40localhost%3E

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/lib.rs b/tests/lib.rs
index 8ab75f6..25aae0f 100644
--- a/tests/lib.rs
+++ b/tests/lib.rs
@@ -10,3 +10,19 @@ fn get_library_version() {
     assert!(version.git.is_empty() || version.git.starts_with("v"));
     assert!(version.major > 0);
 }
+
+#[test]
+fn take_manager() {
+    assert!(nitrokey::take().is_ok());
+
+    let result = nitrokey::take();
+    assert!(result.is_ok());
+    let result2 = nitrokey::take();
+    match result2 {
+        Ok(_) => panic!("Expected error, got Ok(_)!"),
+        Err(nitrokey::Error::ConcurrentAccessError) => {}
+        Err(err) => panic!("Expected ConcurrentAccessError, got {}", err),
+    }
+    drop(result);
+    assert!(nitrokey::take().is_ok());
+}