Vendor dependencies for 0.3.0 release

vendor/jni/tests/threads_nested_attach_daemon.rs

@@ -0,0 +1,48 @@
+#![cfg(feature = "invocation")]
+
+mod util;
+use util::{
+    attach_current_thread, attach_current_thread_as_daemon, attach_current_thread_permanently,
+    call_java_abs, jvm,
+};
+
+#[test]
+pub fn nested_attaches_should_not_detach_daemon_thread() {
+    assert_eq!(jvm().threads_attached(), 0);
+    let mut env = attach_current_thread_as_daemon();
+    let val = call_java_abs(&mut env, -1);
+    assert_eq!(val, 1);
+    assert_eq!(jvm().threads_attached(), 1);
+
+    // Create nested AttachGuard.
+    {
+        let mut env_nested = attach_current_thread();
+        let val = call_java_abs(&mut env_nested, -2);
+        assert_eq!(val, 2);
+        assert_eq!(jvm().threads_attached(), 1);
+    }
+
+    // Call a Java method after nested guard has been dropped to check that
+    // this thread has not been detached.
+    let val = call_java_abs(&mut env, -3);
+    assert_eq!(val, 3);
+    assert_eq!(jvm().threads_attached(), 1);
+
+    // Nested attach_permanently is a no-op.
+    {
+        let mut env_nested = attach_current_thread_permanently();
+        let val = call_java_abs(&mut env_nested, -4);
+        assert_eq!(val, 4);
+        assert_eq!(jvm().threads_attached(), 1);
+    }
+    assert_eq!(jvm().threads_attached(), 1);
+
+    // Nested attach_as_daemon is a no-op.
+    {
+        let mut env_nested = attach_current_thread_as_daemon();
+        let val = call_java_abs(&mut env_nested, -5);
+        assert_eq!(val, 5);
+        assert_eq!(jvm().threads_attached(), 1);
+    }
+    assert_eq!(jvm().threads_attached(), 1);
+}