test: test_trace.py: test 'trace wipe'
Test the newly added 'trace wipe' command.
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/test/py/tests/test_trace.py b/test/py/tests/test_trace.py
index ec1e624..44239da 100644
--- a/test/py/tests/test_trace.py
+++ b/test/py/tests/test_trace.py
@@ -70,6 +70,32 @@
return fname, int(dm_f_time[0])
+def wipe_and_collect_trace(cons):
+ """Pause and wipe traces, return the number of calls (should be zero)
+
+ Args:
+ cons (ConsoleBase): U-Boot console
+
+ Returns:
+ int: the number of traced function calls reported by 'trace stats'
+ """
+ cons.run_command('trace pause')
+ cons.run_command('trace wipe')
+ out = cons.run_command('trace stats')
+
+ # The output is something like this:
+ # 117,221 function sites
+ # 0 function calls
+ # 0 untracked function calls
+ # 0 traced function calls
+
+ # Get a dict of values from the output
+ lines = [line.split(maxsplit=1) for line in out.splitlines() if line]
+ vals = {key: val.replace(',', '') for val, key in lines}
+
+ return int(vals['traced function calls'])
+
+
def check_function(cons, fname, proftool, map_fname, trace_dat):
"""Check that the 'function' output works
@@ -304,3 +330,7 @@
# This allows for CI being slow to run
diff = abs(fg_time - dm_f_time)
assert diff / dm_f_time < 0.3
+
+ # Check that the trace buffer can be wiped
+ numcalls = wipe_and_collect_trace(cons)
+ assert numcalls == 0