# Testdata for resets() and changes().
load 5m
	http_requests{path="/foo"}	1 2 3 0 1 0 0 1 2 0
	http_requests{path="/bar"}	1 2 3 4 5 1 2 3 4 5
	http_requests{path="/biz"}	0 0 0 0 0 1 1 1 1 1

# Tests for resets().
eval instant at 50m resets(http_requests[5m])
	{path="/foo"} 0
	{path="/bar"} 0
	{path="/biz"} 0

eval instant at 50m resets(http_requests[20m])
	{path="/foo"} 1
	{path="/bar"} 0
	{path="/biz"} 0

eval instant at 50m resets(http_requests[30m])
	{path="/foo"} 2
	{path="/bar"} 1
	{path="/biz"} 0

eval instant at 50m resets(http_requests[50m])
	{path="/foo"} 3
	{path="/bar"} 1
	{path="/biz"} 0

eval instant at 50m resets(nonexistent_metric[50m])

# Tests for changes().
eval instant at 50m changes(http_requests[5m])
	{path="/foo"} 0
	{path="/bar"} 0
	{path="/biz"} 0

eval instant at 50m changes(http_requests[20m])
	{path="/foo"} 3
	{path="/bar"} 3
	{path="/biz"} 0

eval instant at 50m changes(http_requests[30m])
	{path="/foo"} 4
	{path="/bar"} 5
	{path="/biz"} 1

eval instant at 50m changes(http_requests[50m])
	{path="/foo"} 8
	{path="/bar"} 9
	{path="/biz"} 1

eval instant at 50m changes(nonexistent_metric[50m])


clear

# Tests for increase().
load 5m
	http_requests{path="/foo"}	0+10x10
	http_requests{path="/bar"}	0+10x5 0+10x5

# Tests for increase().
eval instant at 50m increase(http_requests[50m])
	{path="/foo"} 100
	{path="/bar"}  90


clear

# Tests for deriv() and predict_linear().
load 5m
	testcounter_reset_middle	0+10x4 0+10x5
	http_requests{job="app-server", instance="1", group="canary"}		0+80x10

# deriv should return the same as rate in simple cases.
eval instant at 50m rate(http_requests{group="canary", instance="1", job="app-server"}[60m])
	{group="canary", instance="1", job="app-server"} 0.26666666666666666

eval instant at 50m deriv(http_requests{group="canary", instance="1", job="app-server"}[60m])
	{group="canary", instance="1", job="app-server"} 0.26666666666666666

# deriv should return correct result.
eval instant at 50m deriv(testcounter_reset_middle[100m])
	{} 0.010606060606060607

# predict_linear should return correct result.
eval instant at 50m predict_linear(testcounter_reset_middle[100m], 3600)
	{} 88.181818181818185200

# predict_linear is syntactic sugar around deriv.
eval instant at 50m predict_linear(http_requests[50m], 3600) - (http_requests + deriv(http_requests[50m]) * 3600)
	{group="canary", instance="1", job="app-server"} 0

eval instant at 50m predict_linear(testcounter_reset_middle[100m], 3600) - (testcounter_reset_middle + deriv(testcounter_reset_middle[100m]) * 3600)
	{} 0

clear

# Tests for label_replace.
load 5m
  testmetric{src="source-value-10",dst="original-destination-value"} 0
  testmetric{src="source-value-20",dst="original-destination-value"} 1

# label_replace does a full-string match and replace.
eval instant at 0m label_replace(testmetric, "dst", "destination-value-$1", "src", "source-value-(.*)")
  testmetric{src="source-value-10",dst="destination-value-10"} 0
  testmetric{src="source-value-20",dst="destination-value-20"} 1

# label_replace does not do a sub-string match.
eval instant at 0m label_replace(testmetric, "dst", "destination-value-$1", "src", "value-(.*)")
  testmetric{src="source-value-10",dst="original-destination-value"} 0
  testmetric{src="source-value-20",dst="original-destination-value"} 1

# label_replace works with multiple capture groups.
eval instant at 0m label_replace(testmetric, "dst", "$1-value-$2", "src", "(.*)-value-(.*)")
  testmetric{src="source-value-10",dst="source-value-10"} 0
  testmetric{src="source-value-20",dst="source-value-20"} 1

# label_replace does not overwrite the destination label if the source label
# does not exist.
eval instant at 0m label_replace(testmetric, "dst", "value-$1", "nonexistent-src", "source-value-(.*)")
  testmetric{src="source-value-10",dst="original-destination-value"} 0
  testmetric{src="source-value-20",dst="original-destination-value"} 1

# label_replace overwrites the destination label if the source label is empty,
# but matched.
eval instant at 0m label_replace(testmetric, "dst", "value-$1", "nonexistent-src", "(.*)")
  testmetric{src="source-value-10",dst="value-"} 0
  testmetric{src="source-value-20",dst="value-"} 1

# label_replace does not overwrite the destination label if the source label
# is not matched.
eval instant at 0m label_replace(testmetric, "dst", "value-$1", "src", "non-matching-regex")
  testmetric{src="source-value-10",dst="original-destination-value"} 0
  testmetric{src="source-value-20",dst="original-destination-value"} 1

# label_replace drops labels that are set to empty values.
eval instant at 0m label_replace(testmetric, "dst", "", "dst", ".*")
  testmetric{src="source-value-10"} 0
  testmetric{src="source-value-20"} 1

# label_replace fails when the regex is invalid.
eval_fail instant at 0m label_replace(testmetric, "dst", "value-$1", "src", "(.*")

# label_replace fails when the destination label name is not a valid Prometheus label name.
eval_fail instant at 0m label_replace(testmetric, "invalid-label-name", "", "src", "(.*)")

# label_replace fails when there would be duplicated identical output label sets.
eval_fail instant at 0m label_replace(testmetric, "src", "", "", "")