tests: Add tests for _thread module.

Includes functionality and stress tests.

1 files changed, 40 insertions, 0 deletions

diff --git a/tests/thread/thread_lock1.py b/tests/thread/thread_lock1.py
new file mode 100644
index 000000000..ca585ffbb
--- /dev/null
+++ b/tests/thread/thread_lock1.py
@@ -0,0 +1,40 @@
+# test _thread lock object using a single thread
+#
+# MIT license; Copyright (c) 2016 Damien P. George on behalf of Pycom Ltd
+
+import _thread
+
+# create lock
+lock = _thread.allocate_lock()
+
+print(type(lock) == _thread.LockType)
+
+# should be unlocked
+print(lock.locked())
+
+# basic acquire and release
+print(lock.acquire())
+print(lock.locked())
+lock.release()
+print(lock.locked())
+
+# try acquire twice (second should fail)
+print(lock.acquire())
+print(lock.locked())
+print(lock.acquire(0))
+print(lock.locked())
+lock.release()
+print(lock.locked())
+
+# test with capabilities of lock
+with lock:
+    print(lock.locked())
+
+# test that lock is unlocked if an error is rasied
+try:
+    with lock:
+        print(lock.locked())
+        raise KeyError
+except KeyError:
+    print('KeyError')
+    print(lock.locked())