tree 577156d9caa10790687088dd9054a95066885493
parent f8ae65ca626e0328d6dfbc229f6fcf6dfed56812
author Szymon Dompke <szymon.dompke@intel.com> 1648049484 +0100
committer Szymon Dompke <szymon.dompke@intel.com> 1648050415 +0100

Preserve original discrete trigger value

Currently, there are no 'real' discrete sensors, so discrete trigger is
working with numeric ones. Dbus api is using string as thresholdValue,
but internally service is converting it to double. This resulted in
side-effect of malformed value of Thresholds property, e.g., 90.0 being
represented as 90.000000. This change stores original value in order to
not confuse potential users.

Additionally, check was added to validate whole string of thesholdValue.
Now, it must consist only of numeric characters, values like '12.3FOO'
will be rejected on AddTrigger call.

Testing done:
- UTs added and are passing,
- dbus get-property on Thresholds confirms unchanged initial value.

Signed-off-by: Szymon Dompke <szymon.dompke@intel.com>
Change-Id: Iec3514ac1479587e610f8da31ecf9ba6fc0bdb62