EC firmware_ECBattery test case fails - list index out of range
Martin Yan
Hi,
As I test EC firmware_ECBattery case, after test server reads battery information, it shows,
///
'cat %s' % self._battery_current)[0])) / 1000
IndexError: list index out of range
///
I check the battery reading, all values sound expected,
Charge: 71 %
Manuf: SONYCorp
Device: AP16K4J
Chem: LiP
Serial: 0x0330
V-design: 0x1db0 = 7600 mV
Mode: 0x6101
Abs charge:68 %
Remaining: 3306 mAh
Cap-full: 4628 mAh
Design: 4870 mAh
Time-full: 0h:0
Empty: 5h:0
What does “list index out of range” indicate? Attached test result “test_that_results_ywfx67_battery.zip” for detail info.
Regards,
Sparry, Icarus W
I no longer have anything to do with FAFT, but let me see if I can help anyway.
The “IndexError: list index out of range” is a python error, saying that you tried to access an array or list, with an invalid index, e.g you tried to access element -4 of an array.
If you look in the autoserv.DEBUG file you attached, you will see a bit more context, in particular the filename and the linenumber are
"/build/reef/usr/local/build/autotest/server/site_tests/firmware_ECBattery/firmware_ECBattery.py" line number 100.
Around there you should see something like
kernel_reading = abs(
int(self.faft_client.system.run_shell_command_get_output(
'cat %s' % self._battery_current)[0])) / 1000
So matching the brackets this is doing
self.faft_client.system.run_shell_command_get_output('cat %s' % self._battery_current)
which is expected to return an array of lines, and it is then going to take the first (computers count from 0, hence the [0]). So it looks like you are not getting any lines at all back.
If I had this issue I would add another
logging.info(“Looking for current in ‘%s’” % self._battery_current)
line just before the kernel_reading line, to see the filename that is being accessed with “cat” on the DUT, then try and access that name and see what it gave me.
The most probable cause is misconfiguration, that battery current is not available in /sys/class/power_supply/BAT0/current_now (It found your battery as BAT0).
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