load 5m
	http_requests{job="api-server", instance="0", group="production"}	0+10x10
	http_requests{job="api-server", instance="1", group="production"}	0+20x10
	http_requests{job="api-server", instance="0", group="canary"}		0+30x10
	http_requests{job="api-server", instance="1", group="canary"}		0+40x10
	http_requests{job="app-server", instance="0", group="production"}	0+50x10
	http_requests{job="app-server", instance="1", group="production"}	0+60x10
	http_requests{job="app-server", instance="0", group="canary"}		0+70x10
	http_requests{job="app-server", instance="1", group="canary"}		0+80x10

load 5m
	x{y="testvalue"} 0+10x10

load 5m
	testcounter_reset_middle	0+10x4 0+10x5
	testcounter_reset_end    	0+10x9 0 10

load 5m
	label_grouping_test{a="aa", b="bb"}	0+10x10
	label_grouping_test{a="a", b="abb"}	0+20x10

load 5m
	vector_matching_a{l="x"} 0+1x100
	vector_matching_a{l="y"} 0+2x50
	vector_matching_b{l="x"} 0+4x25

load 5m
	cpu_count{instance="0", type="numa"}	0+30x10
	cpu_count{instance="0", type="smp"} 	0+10x20
	cpu_count{instance="1", type="smp"} 	0+20x10


eval instant at 50m SUM(http_requests)
	{} 3600

eval instant at 50m SUM(http_requests{instance="0"}) BY(job)
	{job="api-server"} 400
	{job="app-server"} 1200

eval instant at 50m SUM(http_requests{instance="0"}) BY(job) KEEP_COMMON
	{instance="0", job="api-server"} 400
	{instance="0", job="app-server"} 1200

eval instant at 50m SUM(http_requests) BY (job)
	{job="api-server"} 1000
	{job="app-server"} 2600

# Non-existent labels mentioned in BY-clauses shouldn't propagate to output.
eval instant at 50m SUM(http_requests) BY (job, nonexistent)
	{job="api-server"} 1000 
	{job="app-server"} 2600 


eval instant at 50m COUNT(http_requests) BY (job)
	{job="api-server"} 4 
	{job="app-server"} 4 


eval instant at 50m SUM(http_requests) BY (job, group)
	{group="canary", job="api-server"} 700 
	{group="canary", job="app-server"} 1500 
	{group="production", job="api-server"} 300 
	{group="production", job="app-server"} 1100 


eval instant at 50m AVG(http_requests) BY (job)
	{job="api-server"} 250 
	{job="app-server"} 650 


eval instant at 50m MIN(http_requests) BY (job)
	{job="api-server"} 100 
	{job="app-server"} 500 


eval instant at 50m MAX(http_requests) BY (job)
	{job="api-server"} 400 
	{job="app-server"} 800 


eval instant at 50m SUM(http_requests) BY (job) - COUNT(http_requests) BY (job)
	{job="api-server"} 996 
	{job="app-server"} 2596 


eval instant at 50m 2 - SUM(http_requests) BY (job)
	{job="api-server"} -998 
	{job="app-server"} -2598 


eval instant at 50m 1000 / SUM(http_requests) BY (job)
	{job="api-server"} 1 
	{job="app-server"} 0.38461538461538464 


eval instant at 50m SUM(http_requests) BY (job) - 2
	{job="api-server"} 998 
	{job="app-server"} 2598 


eval instant at 50m SUM(http_requests) BY (job) % 3
	{job="api-server"} 1 
	{job="app-server"} 2 


eval instant at 50m SUM(http_requests) BY (job) / 0
	{job="api-server"} +Inf 
	{job="app-server"} +Inf 


eval instant at 50m SUM(http_requests) BY (job) + SUM(http_requests) BY (job)
	{job="api-server"} 2000 
	{job="app-server"} 5200 


eval instant at 50m http_requests{job="api-server", group="canary"}
	http_requests{group="canary", instance="0", job="api-server"} 300 
	http_requests{group="canary", instance="1", job="api-server"} 400 


eval instant at 50m http_requests{job="api-server", group="canary"} + rate(http_requests{job="api-server"}[5m]) * 5 * 60
	{group="canary", instance="0", job="api-server"} 330 
	{group="canary", instance="1", job="api-server"} 440 


eval instant at 50m rate(http_requests[25m]) * 25 * 60
	{group="canary", instance="0", job="api-server"} 150 
	{group="canary", instance="0", job="app-server"} 350 
	{group="canary", instance="1", job="api-server"} 200 
	{group="canary", instance="1", job="app-server"} 400 
	{group="production", instance="0", job="api-server"} 50 
	{group="production", instance="0", job="app-server"} 249.99999999999997 
	{group="production", instance="1", job="api-server"} 100 
	{group="production", instance="1", job="app-server"} 300 

eval instant at 50m delta(http_requests[25m], 1)
	{group="canary", instance="0", job="api-server"} 150 
	{group="canary", instance="0", job="app-server"} 350 
	{group="canary", instance="1", job="api-server"} 200 
	{group="canary", instance="1", job="app-server"} 400 
	{group="production", instance="0", job="api-server"} 50 
	{group="production", instance="0", job="app-server"} 250 
	{group="production", instance="1", job="api-server"} 100 
	{group="production", instance="1", job="app-server"} 300 

eval_ordered instant at 50m sort(http_requests)
	http_requests{group="production", instance="0", job="api-server"} 100 
	http_requests{group="production", instance="1", job="api-server"} 200 
	http_requests{group="canary", instance="0", job="api-server"} 300 
	http_requests{group="canary", instance="1", job="api-server"} 400 
	http_requests{group="production", instance="0", job="app-server"} 500 
	http_requests{group="production", instance="1", job="app-server"} 600 
	http_requests{group="canary", instance="0", job="app-server"} 700 
	http_requests{group="canary", instance="1", job="app-server"} 800 

eval_ordered instant at 50m sort(0 / round(http_requests, 400) + http_requests)
	{group="production", instance="0", job="api-server"} NaN 
	{group="production", instance="1", job="api-server"} 200 
	{group="canary", instance="0", job="api-server"} 300 
	{group="canary", instance="1", job="api-server"} 400 
	{group="production", instance="0", job="app-server"} 500 
	{group="production", instance="1", job="app-server"} 600 
	{group="canary", instance="0", job="app-server"} 700 
	{group="canary", instance="1", job="app-server"} 800 


eval_ordered instant at 50m sort_desc(http_requests)
	http_requests{group="canary", instance="1", job="app-server"} 800 
	http_requests{group="canary", instance="0", job="app-server"} 700 
	http_requests{group="production", instance="1", job="app-server"} 600 
	http_requests{group="production", instance="0", job="app-server"} 500 
	http_requests{group="canary", instance="1", job="api-server"} 400 
	http_requests{group="canary", instance="0", job="api-server"} 300 
	http_requests{group="production", instance="1", job="api-server"} 200 
	http_requests{group="production", instance="0", job="api-server"} 100 

eval_ordered instant at 50m topk(3, http_requests)
	http_requests{group="canary", instance="1", job="app-server"} 800 
	http_requests{group="canary", instance="0", job="app-server"} 700 
	http_requests{group="production", instance="1", job="app-server"} 600 

eval_ordered instant at 50m topk(5, http_requests{group="canary",job="app-server"})
	http_requests{group="canary", instance="1", job="app-server"} 800 
	http_requests{group="canary", instance="0", job="app-server"} 700 

eval_ordered instant at 50m bottomk(3, http_requests)
	http_requests{group="production", instance="0", job="api-server"} 100 
	http_requests{group="production", instance="1", job="api-server"} 200 
	http_requests{group="canary", instance="0", job="api-server"} 300 

eval_ordered instant at 50m bottomk(5, http_requests{group="canary",job="app-server"})
	http_requests{group="canary", instance="0", job="app-server"} 700 
	http_requests{group="canary", instance="1", job="app-server"} 800 


# Single-letter label names and values.
eval instant at 50m x{y="testvalue"}
	x{y="testvalue"} 100 


# Lower-cased aggregation operators should work too.
eval instant at 50m sum(http_requests) by (job) + min(http_requests) by (job) + max(http_requests) by (job) + avg(http_requests) by (job)
	{job="app-server"} 4550 
	{job="api-server"} 1750 


# Deltas should be adjusted for target interval vs. samples under target interval.
eval instant at 50m delta(http_requests{group="canary", instance="1", job="app-server"}[18m])
	{group="canary", instance="1", job="app-server"} 288


# Deltas should perform the same operation when 2nd argument is 0.
eval instant at 50m delta(http_requests{group="canary", instance="1", job="app-server"}[18m], 0)
	{group="canary", instance="1", job="app-server"} 288


# Rates should calculate per-second rates.
eval instant at 50m rate(http_requests{group="canary", instance="1", job="app-server"}[60m])
	{group="canary", instance="1", job="app-server"} 0.26666666666666666

# Counter resets at in the middle of range are handled correctly by rate().
eval instant at 50m rate(testcounter_reset_middle[60m])
	{} 0.03


# Counter resets at end of range are ignored by rate().
eval instant at 50m rate(testcounter_reset_end[5m])
	{} 0

# count_scalar for a non-empty vector should return scalar element count.
eval instant at 50m count_scalar(http_requests)
	8

# count_scalar for an empty vector should return scalar 0.
eval instant at 50m count_scalar(nonexistent)
	0

eval instant at 50m http_requests{group!="canary"}
	http_requests{group="production", instance="1", job="app-server"} 600 
	http_requests{group="production", instance="0", job="app-server"} 500 
	http_requests{group="production", instance="1", job="api-server"} 200 
	http_requests{group="production", instance="0", job="api-server"} 100 

eval instant at 50m http_requests{job=~"server",group!="canary"}
	http_requests{group="production", instance="1", job="app-server"} 600 
	http_requests{group="production", instance="0", job="app-server"} 500 
	http_requests{group="production", instance="1", job="api-server"} 200 
	http_requests{group="production", instance="0", job="api-server"} 100 

eval instant at 50m http_requests{job!~"api",group!="canary"}
	http_requests{group="production", instance="1", job="app-server"} 600 
	http_requests{group="production", instance="0", job="app-server"} 500 

eval instant at 50m count_scalar(http_requests{job=~"^server$"})
	0

eval instant at 50m http_requests{group="production",job=~"^api"}
	http_requests{group="production", instance="0", job="api-server"} 100 
	http_requests{group="production", instance="1", job="api-server"} 200 

eval instant at 50m abs(-1 * http_requests{group="production",job="api-server"})
	{group="production", instance="0", job="api-server"} 100 
	{group="production", instance="1", job="api-server"} 200 

eval instant at 50m floor(0.004 * http_requests{group="production",job="api-server"})
	{group="production", instance="0", job="api-server"} 0 
	{group="production", instance="1", job="api-server"} 0 

eval instant at 50m ceil(0.004 * http_requests{group="production",job="api-server"})
	{group="production", instance="0", job="api-server"} 1 
	{group="production", instance="1", job="api-server"} 1 

eval instant at 50m round(0.004 * http_requests{group="production",job="api-server"})
	{group="production", instance="0", job="api-server"} 0 
	{group="production", instance="1", job="api-server"} 1 

# Round should correctly handle negative numbers.
eval instant at 50m round(-1 * (0.004 * http_requests{group="production",job="api-server"}))
	{group="production", instance="0", job="api-server"} 0 
	{group="production", instance="1", job="api-server"} -1 

# Round should round half up.
eval instant at 50m round(0.005 * http_requests{group="production",job="api-server"})
	{group="production", instance="0", job="api-server"} 1 
	{group="production", instance="1", job="api-server"} 1 

eval instant at 50m round(-1 * (0.005 * http_requests{group="production",job="api-server"}))
	{group="production", instance="0", job="api-server"} 0 
	{group="production", instance="1", job="api-server"} -1 

eval instant at 50m round(1 + 0.005 * http_requests{group="production",job="api-server"})
	{group="production", instance="0", job="api-server"} 2 
	{group="production", instance="1", job="api-server"} 2 

eval instant at 50m round(-1 * (1 + 0.005 * http_requests{group="production",job="api-server"}))
	{group="production", instance="0", job="api-server"} -1 
	{group="production", instance="1", job="api-server"} -2 

# Round should accept the number to round nearest to.
eval instant at 50m round(0.0005 * http_requests{group="production",job="api-server"}, 0.1)
	{group="production", instance="0", job="api-server"} 0.1 
	{group="production", instance="1", job="api-server"} 0.1 

eval instant at 50m round(2.1 + 0.0005 * http_requests{group="production",job="api-server"}, 0.1)
	{group="production", instance="0", job="api-server"} 2.2 
	{group="production", instance="1", job="api-server"} 2.2 

eval instant at 50m round(5.2 + 0.0005 * http_requests{group="production",job="api-server"}, 0.1)
	{group="production", instance="0", job="api-server"} 5.3 
	{group="production", instance="1", job="api-server"} 5.3 

# Round should work correctly with negative numbers and multiple decimal places.
eval instant at 50m round(-1 * (5.2 + 0.0005 * http_requests{group="production",job="api-server"}), 0.1)
	{group="production", instance="0", job="api-server"} -5.2 
	{group="production", instance="1", job="api-server"} -5.3 

# Round should work correctly with big toNearests.
eval instant at 50m round(0.025 * http_requests{group="production",job="api-server"}, 5)
	{group="production", instance="0", job="api-server"} 5 
	{group="production", instance="1", job="api-server"} 5 

eval instant at 50m round(0.045 * http_requests{group="production",job="api-server"}, 5)
	{group="production", instance="0", job="api-server"} 5 
	{group="production", instance="1", job="api-server"} 10 

eval instant at 50m avg_over_time(http_requests{group="production",job="api-server"}[1h])
	{group="production", instance="0", job="api-server"} 50 
	{group="production", instance="1", job="api-server"} 100 

eval instant at 50m count_over_time(http_requests{group="production",job="api-server"}[1h])
	{group="production", instance="0", job="api-server"} 11 
	{group="production", instance="1", job="api-server"} 11 

eval instant at 50m max_over_time(http_requests{group="production",job="api-server"}[1h])
	{group="production", instance="0", job="api-server"} 100 
	{group="production", instance="1", job="api-server"} 200 

eval instant at 50m min_over_time(http_requests{group="production",job="api-server"}[1h])
	{group="production", instance="0", job="api-server"} 0 
	{group="production", instance="1", job="api-server"} 0 

eval instant at 50m sum_over_time(http_requests{group="production",job="api-server"}[1h])
	{group="production", instance="0", job="api-server"} 550 
	{group="production", instance="1", job="api-server"} 1100 

eval instant at 50m time()
	3000

eval instant at 50m drop_common_labels(http_requests{group="production",job="api-server"})
	http_requests{instance="0"} 100 
	http_requests{instance="1"} 200 

eval instant at 50m {__name__=~".+"}
	http_requests{group="canary", instance="0", job="api-server"} 300 
	http_requests{group="canary", instance="0", job="app-server"} 700 
	http_requests{group="canary", instance="1", job="api-server"} 400 
	http_requests{group="canary", instance="1", job="app-server"} 800 
	http_requests{group="production", instance="0", job="api-server"} 100 
	http_requests{group="production", instance="0", job="app-server"} 500 
	http_requests{group="production", instance="1", job="api-server"} 200 
	http_requests{group="production", instance="1", job="app-server"} 600 
	testcounter_reset_end 0 
	testcounter_reset_middle 50 
	x{y="testvalue"} 100 
	label_grouping_test{a="a", b="abb"} 200 
	label_grouping_test{a="aa", b="bb"} 100
	vector_matching_a{l="x"} 10 
	vector_matching_a{l="y"} 20 
	vector_matching_b{l="x"} 40 
	cpu_count{instance="1", type="smp"} 200 
	cpu_count{instance="0", type="smp"} 100 
	cpu_count{instance="0", type="numa"} 300 


eval instant at 50m {job=~"server", job!~"api"}
	http_requests{group="canary", instance="0", job="app-server"} 700 
	http_requests{group="canary", instance="1", job="app-server"} 800 
	http_requests{group="production", instance="0", job="app-server"} 500 
	http_requests{group="production", instance="1", job="app-server"} 600 

# Test alternative "by"-clause order.
eval instant at 50m sum by (group) (http_requests{job="api-server"})
	{group="canary"} 700 
	{group="production"} 300 

# Test alternative "by"-clause order with "keep_common".
eval instant at 50m sum by (group) keep_common (http_requests{job="api-server"})
	{group="canary", job="api-server"} 700 
	{group="production", job="api-server"} 300 

# Test both alternative "by"-clause orders in one expression.
# Public health warning: stick to one form within an expression (or even
# in an organization), or risk serious user confusion.
eval instant at 50m sum(sum by (group) keep_common (http_requests{job="api-server"})) by (job)
	{job="api-server"} 1000 

eval instant at 50m http_requests{group="canary"} and http_requests{instance="0"}
	http_requests{group="canary", instance="0", job="api-server"} 300 
	http_requests{group="canary", instance="0", job="app-server"} 700 

eval instant at 50m (http_requests{group="canary"} + 1) and http_requests{instance="0"}
	{group="canary", instance="0", job="api-server"} 301 
	{group="canary", instance="0", job="app-server"} 701 

eval instant at 50m (http_requests{group="canary"} + 1) and on(instance, job) http_requests{instance="0", group="production"}
	{group="canary", instance="0", job="api-server"} 301 
	{group="canary", instance="0", job="app-server"} 701 

eval instant at 50m (http_requests{group="canary"} + 1) and on(instance) http_requests{instance="0", group="production"}
	{group="canary", instance="0", job="api-server"} 301 
	{group="canary", instance="0", job="app-server"} 701 

eval instant at 50m http_requests{group="canary"} or http_requests{group="production"}
	http_requests{group="canary", instance="0", job="api-server"} 300 
	http_requests{group="canary", instance="0", job="app-server"} 700 
	http_requests{group="canary", instance="1", job="api-server"} 400 
	http_requests{group="canary", instance="1", job="app-server"} 800 
	http_requests{group="production", instance="0", job="api-server"} 100 
	http_requests{group="production", instance="0", job="app-server"} 500 
	http_requests{group="production", instance="1", job="api-server"} 200 
	http_requests{group="production", instance="1", job="app-server"} 600 

# On overlap the rhs samples must be dropped.
eval instant at 50m (http_requests{group="canary"} + 1) or http_requests{instance="1"}
	{group="canary", instance="0", job="api-server"} 301 
	{group="canary", instance="0", job="app-server"} 701 
	{group="canary", instance="1", job="api-server"} 401 
	{group="canary", instance="1", job="app-server"} 801 
	http_requests{group="production", instance="1", job="api-server"} 200 
	http_requests{group="production", instance="1", job="app-server"} 600 

# Matching only on instance excludes everything that has instance=0/1 but includes
# entries without the instance label.
eval instant at 50m (http_requests{group="canary"} + 1) or on(instance) (http_requests or cpu_count or vector_matching_a)
	{group="canary", instance="0", job="api-server"} 301 
	{group="canary", instance="0", job="app-server"} 701 
	{group="canary", instance="1", job="api-server"} 401 
	{group="canary", instance="1", job="app-server"} 801 
	vector_matching_a{l="x"} 10 
	vector_matching_a{l="y"} 20 

eval instant at 50m http_requests{group="canary"} / on(instance,job) http_requests{group="production"}
	{instance="0", job="api-server"} 3 
	{instance="0", job="app-server"} 1.4 
	{instance="1", job="api-server"} 2 
	{instance="1", job="app-server"} 1.3333333333333333 

# Include labels must guarantee uniquely identifiable time series.
eval_fail instant at 50m http_requests{group="production"} / on(instance) group_left(group) cpu_count{type="smp"}

# Many-to-many matching is not allowed.
eval_fail instant at 50m http_requests{group="production"} / on(instance) group_left(job,type) cpu_count

# Many-to-one matching must be explicit.
eval_fail instant at 50m http_requests{group="production"} / on(instance) cpu_count{type="smp"}

eval instant at 50m http_requests{group="production"} / on(instance) group_left(job) cpu_count{type="smp"}
	{instance="1", job="api-server"} 1 
	{instance="0", job="app-server"} 5 
	{instance="1", job="app-server"} 3 
	{instance="0", job="api-server"} 1 

# Ensure sidedness of grouping preserves operand sides.
eval instant at 50m cpu_count{type="smp"} / on(instance) group_right(job) http_requests{group="production"}
	{instance="1", job="app-server"} 0.3333333333333333 
	{instance="0", job="app-server"} 0.2 
	{instance="1", job="api-server"} 1 
	{instance="0", job="api-server"} 1 

# Include labels from both sides.
eval instant at 50m http_requests{group="production"} / on(instance) group_left(job) cpu_count{type="smp"}
	{instance="1", job="api-server"} 1 
	{instance="0", job="app-server"} 5 
	{instance="1", job="app-server"} 3 
	{instance="0", job="api-server"} 1 

eval instant at 50m http_requests{group="production"} < on(instance,job) http_requests{group="canary"}
	{instance="1", job="app-server"} 600 
	{instance="0", job="app-server"} 500 
	{instance="1", job="api-server"} 200 
	{instance="0", job="api-server"} 100 


eval instant at 50m http_requests{group="production"} > on(instance,job) http_requests{group="canary"}
	# no output

eval instant at 50m http_requests{group="production"} == on(instance,job) http_requests{group="canary"}
	# no output

eval instant at 50m http_requests > on(instance) group_left(group,job) cpu_count{type="smp"}
	{group="canary", instance="0", job="app-server"} 700 
	{group="canary", instance="1", job="app-server"} 800 
	{group="canary", instance="0", job="api-server"} 300 
	{group="canary", instance="1", job="api-server"} 400 
	{group="production", instance="0", job="app-server"} 500 
	{group="production", instance="1", job="app-server"} 600 

eval instant at 50m {l="x"} + on(__name__) {l="y"}
	vector_matching_a 30 

eval instant at 50m absent(nonexistent)
	{} 1 


eval instant at 50m absent(nonexistent{job="testjob", instance="testinstance", method=~".x"})
	{instance="testinstance", job="testjob"} 1 

eval instant at 50m count_scalar(absent(http_requests))
	0 

eval instant at 50m count_scalar(absent(sum(http_requests)))
	0 

eval instant at 50m absent(sum(nonexistent{job="testjob", instance="testinstance"}))
	{} 1 

eval instant at 50m http_requests{group="production",job="api-server"} offset 5m
	http_requests{group="production", instance="0", job="api-server"} 90 
	http_requests{group="production", instance="1", job="api-server"} 180 

eval instant at 50m rate(http_requests{group="production",job="api-server"}[10m] offset 5m)
	{group="production", instance="0", job="api-server"} 0.03333333333333333 
	{group="production", instance="1", job="api-server"} 0.06666666666666667 

# Regression test for missing separator byte in labelsToGroupingKey.
eval instant at 50m sum(label_grouping_test) by (a, b)
	{a="a", b="abb"} 200 
	{a="aa", b="bb"} 100 

eval instant at 50m http_requests{group="canary", instance="0", job="api-server"} / 0
	{group="canary", instance="0", job="api-server"} +Inf 

eval instant at 50m -1 * http_requests{group="canary", instance="0", job="api-server"} / 0
	{group="canary", instance="0", job="api-server"} -Inf 

eval instant at 50m 0 * http_requests{group="canary", instance="0", job="api-server"} / 0
	{group="canary", instance="0", job="api-server"} NaN 

eval instant at 50m 0 * http_requests{group="canary", instance="0", job="api-server"} % 0
	{group="canary", instance="0", job="api-server"} NaN 

eval instant at 50m exp(vector_matching_a)
	{l="x"} 22026.465794806718 
	{l="y"} 485165195.4097903 

eval instant at 50m exp(vector_matching_a - 10)
	{l="y"} 22026.465794806718 
	{l="x"} 1 

eval instant at 50m exp(vector_matching_a - 20)
	{l="x"} 4.5399929762484854e-05 
	{l="y"} 1 

eval instant at 50m ln(vector_matching_a)
	{l="x"} 2.302585092994046 
	{l="y"} 2.995732273553991 

eval instant at 50m ln(vector_matching_a - 10)
	{l="y"} 2.302585092994046 
	{l="x"} -Inf 

eval instant at 50m ln(vector_matching_a - 20)
	{l="y"} -Inf 
	{l="x"} NaN 

eval instant at 50m exp(ln(vector_matching_a))
	{l="y"} 20 
	{l="x"} 10 

eval instant at 50m sqrt(vector_matching_a)
	{l="x"} 3.1622776601683795 
	{l="y"} 4.47213595499958 

eval instant at 50m log2(vector_matching_a)
	{l="x"} 3.3219280948873626 
	{l="y"} 4.321928094887363 

eval instant at 50m log2(vector_matching_a - 10)
	{l="y"} 3.3219280948873626 
	{l="x"} -Inf 

eval instant at 50m log2(vector_matching_a - 20)
	{l="x"} NaN 
	{l="y"} -Inf 

eval instant at 50m log10(vector_matching_a)
	{l="x"} 1 
	{l="y"} 1.301029995663981 

eval instant at 50m log10(vector_matching_a - 10)
	{l="y"} 1 
	{l="x"} -Inf 

eval instant at 50m log10(vector_matching_a - 20)
	{l="x"} NaN 
	{l="y"} -Inf 

eval instant at 50m stddev(http_requests)
	{} 229.12878474779 

eval instant at 50m stddev by (instance)(http_requests)
	{instance="0"} 223.60679774998 
	{instance="1"} 223.60679774998 

eval instant at 50m stdvar(http_requests)
	{} 52500 

eval instant at 50m stdvar by (instance)(http_requests)
	{instance="0"} 50000 
	{instance="1"} 50000


# Matrix tests.

clear
load 1h
	testmetric{testlabel="1"} 1 1
	testmetric{testlabel="2"} _ 2

eval instant at 0h drop_common_labels(testmetric)
	testmetric 1

eval instant at 1h drop_common_labels(testmetric)
	testmetric{testlabel="1"} 1
	testmetric{testlabel="2"} 2

clear
load 1h
	testmetric{testlabel="1"} 1 1
	testmetric{testlabel="2"} 2 _

eval instant at 0h sum(testmetric) keep_common
	{} 3

eval instant at 1h sum(testmetric) keep_common
	{testlabel="1"} 1

clear
load 1h
	testmetric{aa="bb"} 1
	testmetric{a="abb"} 2

eval instant at 0h testmetric
	testmetric{aa="bb"} 1
	testmetric{a="abb"} 2