I am also curious about this behavior. Can anyone explain this case in more
detail? I appreciate it!
Since the time series data 'x' only has the values between 0m to 2m, why
the alert is still fired between 3m to 7m? Thank!
Tashfia Rahman於 2020年6月9日星期二 UTC+8下午9時57分19秒寫道：
>
> Hi all,
>
> I'm using Promtool for unit testing alert rules, and I'm having trouble
> understanding the behavior for unspecific input_series values.
>
> For example, say I have an alert rule that fires for the expression x ==
> 5.
>
> - alert: test_alert
> expr: x == 5
> labels:
> severity: page
> annotations:
> description: "x is {{ $value }}"
> summary: "x is {{ $value }}"
>
> When I run this test with my input_series values '5 5 5' I'm only
> specifying input values for minutes 0, 1, and 2.
>
> - interval: 1m
> input_series:
> - series: 'x'
> values: '5 5 5'
> alert_rule_test:
> - eval_time: 7m
> alertname: test_alert
> exp_alerts:
> - exp_labels:
> severity: page
> exp_annotations:
> description: "x is 5"
> summary: "x is 5"
>
> As expected, the alert fires for eval_time 0m through 2m. However, the
> alert still fires when I make the eval_time anywhere from 3m through 7m,
> but then fails with 8m and later. I'm not sure why 3-7 work and then at 8
> it stops working.
>
> I've tried some other scenarios and can't find a pattern for when
> unspecified values do/don't work. I'm not sure if I am misinterpreting
> something here, so any help would be greatly appreciated.
>
> Thanks in advance!
>
>
>
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