load 10s
	http_requests{job="api-server", instance="0", group="production"}	0+10x1000 100+30x1000
	http_requests{job="api-server", instance="1", group="production"}	0+20x1000 200+30x1000
	http_requests{job="api-server", instance="0", group="canary"}		0+30x1000 300+80x1000
	http_requests{job="api-server", instance="1", group="canary"}		0+40x2000

eval instant at 8000s rate(http_requests[1m])
	{job="api-server", instance="0", group="production"} 1
	{job="api-server", instance="1", group="production"} 2
	{job="api-server", instance="0", group="canary"} 3
	{job="api-server", instance="1", group="canary"} 4

eval instant at 18000s rate(http_requests[1m])
	{job="api-server", instance="0", group="production"} 3
	{job="api-server", instance="1", group="production"} 3
	{job="api-server", instance="0", group="canary"} 8
	{job="api-server", instance="1", group="canary"} 4

eval instant at 8000s rate(http_requests{group=~"pro.*"}[1m])
	{job="api-server", instance="0", group="production"} 1
	{job="api-server", instance="1", group="production"} 2

eval instant at 18000s rate(http_requests{group=~".*ry", instance="1"}[1m])
	{job="api-server", instance="1", group="canary"} 4

eval instant at 18000s rate(http_requests{instance!="3"}[1m] offset 10000s)
	{job="api-server", instance="0", group="production"} 1
	{job="api-server", instance="1", group="production"} 2
	{job="api-server", instance="0", group="canary"} 3
	{job="api-server", instance="1", group="canary"} 4

eval instant at 18000s rate(http_requests[40s]) - rate(http_requests[1m] offset 10000s)
	{job="api-server", instance="0", group="production"} 2
	{job="api-server", instance="1", group="production"} 1
	{job="api-server", instance="0", group="canary"} 5
	{job="api-server", instance="1", group="canary"} 0

# https://github.com/prometheus/prometheus/issues/3575
eval instant at 0s http_requests{foo!="bar"}
	http_requests{job="api-server", instance="0", group="production"} 0
	http_requests{job="api-server", instance="1", group="production"} 0
	http_requests{job="api-server", instance="0", group="canary"} 0
	http_requests{job="api-server", instance="1", group="canary"} 0

eval instant at 0s http_requests{foo!="bar", job="api-server"}
	http_requests{job="api-server", instance="0", group="production"} 0
	http_requests{job="api-server", instance="1", group="production"} 0
	http_requests{job="api-server", instance="0", group="canary"} 0
	http_requests{job="api-server", instance="1", group="canary"} 0

eval instant at 0s http_requests{foo!~"bar", job="api-server"}
	http_requests{job="api-server", instance="0", group="production"} 0
	http_requests{job="api-server", instance="1", group="production"} 0
	http_requests{job="api-server", instance="0", group="canary"} 0
	http_requests{job="api-server", instance="1", group="canary"} 0

eval instant at 0s http_requests{foo!~"bar", job="api-server", instance="1", x!="y", z="", group!=""}
	http_requests{job="api-server", instance="1", group="production"} 0
	http_requests{job="api-server", instance="1", group="canary"} 0

# https://github.com/prometheus/prometheus/issues/7994
eval instant at 8000s rate(http_requests{group=~"(?i:PRO).*"}[1m])
	{job="api-server", instance="0", group="production"} 1
	{job="api-server", instance="1", group="production"} 2

eval instant at 8000s rate(http_requests{group=~".*?(?i:PRO).*"}[1m])
	{job="api-server", instance="0", group="production"} 1
	{job="api-server", instance="1", group="production"} 2

eval instant at 8000s rate(http_requests{group=~".*(?i:DUC).*"}[1m])
	{job="api-server", instance="0", group="production"} 1
	{job="api-server", instance="1", group="production"} 2

eval instant at 8000s rate(http_requests{group=~".*(?i:TION)"}[1m])
	{job="api-server", instance="0", group="production"} 1
	{job="api-server", instance="1", group="production"} 2

eval instant at 8000s rate(http_requests{group=~".*(?i:TION).*?"}[1m])
	{job="api-server", instance="0", group="production"} 1
	{job="api-server", instance="1", group="production"} 2


eval instant at 8000s rate(http_requests{group=~"((?i)PRO).*"}[1m])
	{job="api-server", instance="0", group="production"} 1
	{job="api-server", instance="1", group="production"} 2

eval instant at 8000s rate(http_requests{group=~".*((?i)DUC).*"}[1m])
	{job="api-server", instance="0", group="production"} 1
	{job="api-server", instance="1", group="production"} 2

eval instant at 8000s rate(http_requests{group=~".*((?i)TION)"}[1m])
	{job="api-server", instance="0", group="production"} 1
	{job="api-server", instance="1", group="production"} 2


eval instant at 8000s rate(http_requests{group=~"(?i:PRODUCTION)"}[1m])
	{job="api-server", instance="0", group="production"} 1
	{job="api-server", instance="1", group="production"} 2

eval instant at 8000s rate(http_requests{group=~".*(?i:C).*"}[1m])
	{job="api-server", instance="0", group="production"} 1
	{job="api-server", instance="1", group="production"} 2
	{job="api-server", instance="0", group="canary"} 3
	{job="api-server", instance="1", group="canary"} 4

clear
load 1m
    metric1{a="a"} 0+1x100
    metric2{b="b"} 0+1x50

eval instant at 90m metric1 offset 15m or metric2 offset 45m
    metric1{a="a"} 75
    metric2{b="b"} 45