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#![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_permanent_thread() {
assert_eq!(jvm().threads_attached(), 0);
let env = attach_current_thread_permanently();
let val = call_java_abs(&env, -1);
assert_eq!(val, 1);
assert_eq!(jvm().threads_attached(), 1);
// Create nested AttachGuard.
{
let env_nested = attach_current_thread();
let val = call_java_abs(&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(&env, -3);
assert_eq!(val, 3);
assert_eq!(jvm().threads_attached(), 1);
// Nested attach_permanently is a no-op.
{
let env_nested = attach_current_thread_permanently();
let val = call_java_abs(&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 env_nested = attach_current_thread_as_daemon();
let val = call_java_abs(&env_nested, -5);
assert_eq!(val, 5);
assert_eq!(jvm().threads_attached(), 1);
}
assert_eq!(jvm().threads_attached(), 1);
assert!(jvm().get_env().is_ok());
}
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