* Add error handling for unknown units
* Fix test cases
* Add case for empty string
* Changed tests from convey to testify
* Fix lints
* Move regex vars
* Add regex as ng-patterns on alert_tab.html
* Update public/app/features/alerting/partials/alert_tab.html
Co-authored-by: Marcus Efraimsson <marcus.efraimsson@gmail.com>
* Update public/app/features/alerting/partials/alert_tab.html
Co-authored-by: Marcus Efraimsson <marcus.efraimsson@gmail.com>
* Make zero and empty string not throw errors
* Updated validation error comments
* Frequency should allow zero or empty strings
* use checkFrequency instead of ng-pattern
checkFrequency is not triggered if ng-pattern is defined.
* Extract getForValue func - add tests
* Fix linting
Co-authored-by: Marcus Efraimsson <marcus.efraimsson@gmail.com>