From: Stephen Warren <swar...@nvidia.com>
Execute "sleep", and validate that it sleeps for approximately the correct
amount of time.
Signed-off-by: Stephen Warren <swar...@nvidia.com>
Acked-by: Simon Glass <s...@chromium.org>
---
v4: New patch.
Note that this test won't pass for sandbox until the following patches
is applied: timer: sandbox: work without device tree
---
test/py/tests/test_sleep.py | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
create mode 100644 test/py/tests/test_sleep.py
diff --git a/test/py/tests/test_sleep.py b/test/py/tests/test_sleep.py
new file mode 100644
index 000000000000..64f1ddf9a09f
--- /dev/null
+++ b/test/py/tests/test_sleep.py
@@ -0,0 +1,24 @@
+# Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
+#
+# SPDX-License-Identifier: GPL-2.0
+
+import pytest
+import time
+
+def test_sleep(u_boot_console):
+ '''Test the sleep command, and validate that it sleeps for approximately
+ the correct amount of time.'''
+
+ # Do this before we time anything, to make sure U-Boot is already running.
+ # Otherwise, the system boot time is included in the time measurement.
+ u_boot_console.ensure_spawned()
+
+ # 3s isn't too long, but is enough to cross a few second boundaries.
+ sleep_time = 3
+ tstart = time.time()
+ u_boot_console.run_command('sleep %d' % sleep_time)
+ tend = time.time()
+ elapsed = tend - tstart
+ delta_to_expected = abs(elapsed - sleep_time)
+ # 0.25s margin is hopefully enough to account for any system overhead.
+ assert delta_to_expected < 0.25
--
2.7.0
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