Weed out our homegrown test.Tester.

The Go stdlib has testing.TB now, which fulfills the exact same
purpose.

Change-Id: I0db9c73400e208ca376b932a02b7e3402234b87c

retrieval/scheduler_test.go

@@ -14,10 +14,11 @@
 package retrieval
 
 import (
-	"github.com/prometheus/prometheus/utility"
-	"github.com/prometheus/prometheus/utility/test"
 	"testing"
 	"time"
+
+	"github.com/prometheus/prometheus/utility"
+	"github.com/prometheus/prometheus/utility/test"
 )
 
 type fakeHealthReporter struct {
@@ -33,7 +34,7 @@ func (h fakeHealthReporter) State() (state TargetState) {
 	return
 }
 
-func testHealthScheduler(t test.Tester) {
+func testHealthScheduler(t testing.TB) {
 	now := time.Now()
 	var scenarios = []struct {
 		futureHealthState []TargetState

retrieval/targetmanager_test.go

@@ -26,7 +26,6 @@ import (
 	pb "github.com/prometheus/prometheus/config/generated"
 
 	"github.com/prometheus/prometheus/config"
-	"github.com/prometheus/prometheus/utility/test"
 )
 
 type fakeTarget struct {
@@ -77,7 +76,7 @@ func (t *fakeTarget) Merge(newTarget Target) {}
 
 func (t *fakeTarget) EstimatedTimeToExecute() time.Duration { return 0 }
 
-func testTargetManager(t test.Tester) {
+func testTargetManager(t testing.TB) {
 	targetManager := NewTargetManager(nopIngester{}, 3)
 	testJob1 := config.JobConfig{
 		JobConfig: pb.JobConfig{

retrieval/targetpool_test.go

@@ -17,11 +17,9 @@ import (
 	"sort"
 	"testing"
 	"time"
-
-	"github.com/prometheus/prometheus/utility/test"
 )
 
-func testTargetPool(t test.Tester) {
+func testTargetPool(t testing.TB) {
 	type expectation struct {
 		size int
 	}

rules/rules_test.go

@@ -64,7 +64,7 @@ func (t testTieredStorageCloser) Close() {
 
 // This is copied from storage/metric/helpers_test.go, which is unfortunate but
 // presently required to make things work.
-func NewTestTieredStorage(t test.Tester) (storage *tiered.TieredStorage, closer test.Closer) {
+func NewTestTieredStorage(t testing.TB) (storage *tiered.TieredStorage, closer test.Closer) {
 	var directory test.TemporaryDirectory
 	directory = test.NewTemporaryDirectory("test_tiered_storage", t)
 	storage, err := tiered.NewTieredStorage(2500, 1000, 5*time.Second, 0*time.Second, directory.Path())
@@ -91,7 +91,7 @@ func NewTestTieredStorage(t test.Tester) (storage *tiered.TieredStorage, closer
 	return
 }
 
-func newTestStorage(t test.Tester) (storage *tiered.TieredStorage, closer test.Closer) {
+func newTestStorage(t testing.TB) (storage *tiered.TieredStorage, closer test.Closer) {
 	storage, closer = NewTestTieredStorage(t)
 	if storage == nil {
 		t.Fatal("storage == nil")

storage/metric/labelpair_test.go

@@ -16,11 +16,9 @@ package metric
 import (
 	"sort"
 	"testing"
-
-	"github.com/prometheus/prometheus/utility/test"
 )
 
-func testLabelPairs(t test.Tester) {
+func testLabelPairs(t testing.TB) {
 	var scenarios = []struct {
 		in  LabelPairs
 		out LabelPairs

storage/metric/tiered/end_to_end_test.go

@@ -21,10 +21,9 @@ import (
 	clientmodel "github.com/prometheus/client_golang/model"
 
 	"github.com/prometheus/prometheus/storage/metric"
-	"github.com/prometheus/prometheus/utility/test"
 )
 
-func GetFingerprintsForLabelSetTests(p metric.Persistence, t test.Tester) {
+func GetFingerprintsForLabelSetTests(p metric.Persistence, t testing.TB) {
 	metrics := []clientmodel.Metric{
 		{
 			clientmodel.MetricNameLabel: "test_metric",
@@ -153,7 +152,7 @@ func GetFingerprintsForLabelSetTests(p metric.Persistence, t test.Tester) {
 	}
 }
 
-func GetLabelValuesForLabelNameTests(p metric.Persistence, t test.Tester) {
+func GetLabelValuesForLabelNameTests(p metric.Persistence, t testing.TB) {
 	testAppendSamples(p, &clientmodel.Sample{
 		Value:     0,
 		Timestamp: 0,
@@ -197,7 +196,7 @@ func GetLabelValuesForLabelNameTests(p metric.Persistence, t test.Tester) {
 	}
 }
 
-func GetMetricForFingerprintTests(p metric.Persistence, t test.Tester) {
+func GetMetricForFingerprintTests(p metric.Persistence, t testing.TB) {
 	testAppendSamples(p, &clientmodel.Sample{
 		Value:     0,
 		Timestamp: 0,
@@ -308,7 +307,7 @@ func GetMetricForFingerprintTests(p metric.Persistence, t test.Tester) {
 	}
 }
 
-func AppendRepeatingValuesTests(p metric.Persistence, t test.Tester) {
+func AppendRepeatingValuesTests(p metric.Persistence, t testing.TB) {
 	m := clientmodel.Metric{
 		clientmodel.MetricNameLabel: "errors_total",
 		"controller":                "foo",
@@ -368,7 +367,7 @@ func AppendRepeatingValuesTests(p metric.Persistence, t test.Tester) {
 	}
 }
 
-func AppendsRepeatingValuesTests(p metric.Persistence, t test.Tester) {
+func AppendsRepeatingValuesTests(p metric.Persistence, t testing.TB) {
 	m := clientmodel.Metric{
 		clientmodel.MetricNameLabel: "errors_total",
 		"controller":                "foo",

storage/metric/tiered/helpers_test.go

@@ -15,6 +15,7 @@ package tiered
 
 import (
 	"fmt"
+	"testing"
 	"time"
 
 	clientmodel "github.com/prometheus/client_golang/model"
@@ -29,14 +30,14 @@ var (
 	testInstant  = clientmodel.TimestampFromTime(time.Date(1972, 7, 18, 19, 5, 45, 0, usEastern).In(time.UTC))
 )
 
-func testAppendSamples(p metric.Persistence, s *clientmodel.Sample, t test.Tester) {
+func testAppendSamples(p metric.Persistence, s *clientmodel.Sample, t testing.TB) {
 	err := p.AppendSamples(clientmodel.Samples{s})
 	if err != nil {
 		t.Fatal(err)
 	}
 }
 
-func buildLevelDBTestPersistencesMaker(name string, t test.Tester) func() (metric.Persistence, test.Closer) {
+func buildLevelDBTestPersistencesMaker(name string, t testing.TB) func() (metric.Persistence, test.Closer) {
 	return func() (metric.Persistence, test.Closer) {
 		temporaryDirectory := test.NewTemporaryDirectory("get_value_at_time", t)
 
@@ -49,8 +50,8 @@ func buildLevelDBTestPersistencesMaker(name string, t test.Tester) func() (metri
 	}
 }
 
-func buildLevelDBTestPersistence(name string, f func(p metric.Persistence, t test.Tester)) func(t test.Tester) {
-	return func(t test.Tester) {
+func buildLevelDBTestPersistence(name string, f func(p metric.Persistence, t testing.TB)) func(t testing.TB) {
+	return func(t testing.TB) {
 
 		temporaryDirectory := test.NewTemporaryDirectory(fmt.Sprintf("test_leveldb_%s", name), t)
 		defer temporaryDirectory.Close()
@@ -67,8 +68,8 @@ func buildLevelDBTestPersistence(name string, f func(p metric.Persistence, t tes
 	}
 }
 
-func buildMemoryTestPersistence(f func(p metric.Persistence, t test.Tester)) func(t test.Tester) {
-	return func(t test.Tester) {
+func buildMemoryTestPersistence(f func(p metric.Persistence, t testing.TB)) func(t testing.TB) {
+	return func(t testing.TB) {
 
 		p := NewMemorySeriesStorage(MemorySeriesOptions{})
 
@@ -88,7 +89,7 @@ func (t *testTieredStorageCloser) Close() {
 	t.directory.Close()
 }
 
-func NewTestTieredStorage(t test.Tester) (*TieredStorage, test.Closer) {
+func NewTestTieredStorage(t testing.TB) (*TieredStorage, test.Closer) {
 	directory := test.NewTemporaryDirectory("test_tiered_storage", t)
 	storage, err := NewTieredStorage(2500, 1000, 5*time.Second, 0, directory.Path())
 

storage/metric/tiered/regressions_test.go

@@ -19,10 +19,9 @@ import (
 	clientmodel "github.com/prometheus/client_golang/model"
 
 	"github.com/prometheus/prometheus/storage/metric"
-	"github.com/prometheus/prometheus/utility/test"
 )
 
-func GetFingerprintsForLabelSetUsesAndForLabelMatchingTests(p metric.Persistence, t test.Tester) {
+func GetFingerprintsForLabelSetUsesAndForLabelMatchingTests(p metric.Persistence, t testing.TB) {
 	metrics := []clientmodel.LabelSet{
 		{clientmodel.MetricNameLabel: "request_metrics_latency_equal_tallying_microseconds", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
 		{clientmodel.MetricNameLabel: "requests_metrics_latency_equal_accumulating_microseconds", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},

storage/metric/tiered/rule_integration_test.go

@@ -23,7 +23,7 @@ import (
 	"github.com/prometheus/prometheus/utility/test"
 )
 
-func GetValueAtTimeTests(persistenceMaker func() (metric.ViewablePersistence, test.Closer), t test.Tester) {
+func GetValueAtTimeTests(persistenceMaker func() (metric.ViewablePersistence, test.Closer), t testing.TB) {
 	type value struct {
 		year  int
 		month time.Month
@@ -356,7 +356,7 @@ func GetValueAtTimeTests(persistenceMaker func() (metric.ViewablePersistence, te
 	}
 }
 
-func GetRangeValuesTests(persistenceMaker func() (metric.ViewablePersistence, test.Closer), onlyBoundaries bool, t test.Tester) {
+func GetRangeValuesTests(persistenceMaker func() (metric.ViewablePersistence, test.Closer), onlyBoundaries bool, t testing.TB) {
 	type value struct {
 		year  int
 		month time.Month
@@ -899,7 +899,7 @@ func GetRangeValuesTests(persistenceMaker func() (metric.ViewablePersistence, te
 
 // Test Definitions Follow
 
-func testMemoryGetValueAtTime(t test.Tester) {
+func testMemoryGetValueAtTime(t testing.TB) {
 	persistenceMaker := func() (metric.ViewablePersistence, test.Closer) {
 		return NewMemorySeriesStorage(MemorySeriesOptions{}), test.NilCloser
 	}
@@ -927,7 +927,7 @@ func BenchmarkMemoryGetBoundaryValues(b *testing.B) {
 	}
 }
 
-func testMemoryGetRangeValues(t test.Tester) {
+func testMemoryGetRangeValues(t testing.TB) {
 	persistenceMaker := func() (metric.ViewablePersistence, test.Closer) {
 		return NewMemorySeriesStorage(MemorySeriesOptions{}), test.NilCloser
 	}
@@ -935,7 +935,7 @@ func testMemoryGetRangeValues(t test.Tester) {
 	GetRangeValuesTests(persistenceMaker, false, t)
 }
 
-func testMemoryGetBoundaryValues(t test.Tester) {
+func testMemoryGetBoundaryValues(t testing.TB) {
 	persistenceMaker := func() (metric.ViewablePersistence, test.Closer) {
 		return NewMemorySeriesStorage(MemorySeriesOptions{}), test.NilCloser
 	}

storage/metric/tiered/stochastic_test.go

@@ -32,14 +32,14 @@ import (
 
 const stochasticMaximumVariance = 8
 
-func BasicLifecycleTests(p metric.Persistence, t test.Tester) {
+func BasicLifecycleTests(p metric.Persistence, t testing.TB) {
 	if p == nil {
 		t.Errorf("Received nil Metric Persistence.\n")
 		return
 	}
 }
 
-func ReadEmptyTests(p metric.Persistence, t test.Tester) {
+func ReadEmptyTests(p metric.Persistence, t testing.TB) {
 	hasLabelPair := func(x int) (success bool) {
 		fingerprints, err := p.GetFingerprintsForLabelMatchers(metric.LabelMatchers{{
 			Type:  metric.Equal,
@@ -89,7 +89,7 @@ func ReadEmptyTests(p metric.Persistence, t test.Tester) {
 	}
 }
 
-func AppendSampleAsPureSparseAppendTests(p metric.Persistence, t test.Tester) {
+func AppendSampleAsPureSparseAppendTests(p metric.Persistence, t testing.TB) {
 	appendSample := func(x int) (success bool) {
 		v := clientmodel.SampleValue(x)
 		ts := clientmodel.TimestampFromUnix(int64(x))
@@ -118,7 +118,7 @@ func AppendSampleAsPureSparseAppendTests(p metric.Persistence, t test.Tester) {
 	}
 }
 
-func AppendSampleAsSparseAppendWithReadsTests(p metric.Persistence, t test.Tester) {
+func AppendSampleAsSparseAppendWithReadsTests(p metric.Persistence, t testing.TB) {
 	appendSample := func(x int) (success bool) {
 		v := clientmodel.SampleValue(x)
 		ts := clientmodel.TimestampFromUnix(int64(x))
@@ -170,7 +170,7 @@ func AppendSampleAsSparseAppendWithReadsTests(p metric.Persistence, t test.Teste
 	}
 }
 
-func AppendSampleAsPureSingleEntityAppendTests(p metric.Persistence, t test.Tester) {
+func AppendSampleAsPureSingleEntityAppendTests(p metric.Persistence, t testing.TB) {
 	appendSample := func(x int) bool {
 		sample := &clientmodel.Sample{
 			Value:     clientmodel.SampleValue(x),
@@ -237,7 +237,7 @@ func (t timeslice) Less(i, j int) bool {
 	return t[i].Before(t[j])
 }
 
-func StochasticTests(persistenceMaker func() (metric.Persistence, test.Closer), t test.Tester) {
+func StochasticTests(persistenceMaker func() (metric.Persistence, test.Closer), t testing.TB) {
 	stochastic := func(x int) (success bool) {
 		p, closer := persistenceMaker()
 		defer closer.Close()
@@ -528,7 +528,7 @@ func BenchmarkLevelDBAppendSampleAsPureSingleEntityAppend(b *testing.B) {
 	}
 }
 
-func testLevelDBStochastic(t test.Tester) {
+func testLevelDBStochastic(t testing.TB) {
 	persistenceMaker := func() (metric.Persistence, test.Closer) {
 		temporaryDirectory := test.NewTemporaryDirectory("test_leveldb_stochastic", t)
 
@@ -613,7 +613,7 @@ func BenchmarkMemoryAppendSampleAsPureSingleEntityAppend(b *testing.B) {
 	}
 }
 
-func testMemoryStochastic(t test.Tester) {
+func testMemoryStochastic(t testing.TB) {
 	persistenceMaker := func() (metric.Persistence, test.Closer) {
 		return NewMemorySeriesStorage(MemorySeriesOptions{}), test.NilCloser
 	}

storage/metric/tiered/tiered_test.go

@@ -23,7 +23,6 @@ import (
 
 	"github.com/prometheus/prometheus/stats"
 	"github.com/prometheus/prometheus/storage/metric"
-	"github.com/prometheus/prometheus/utility/test"
 )
 
 func buildSamples(from, to clientmodel.Timestamp, interval time.Duration, m clientmodel.Metric) (v clientmodel.Samples) {
@@ -57,7 +56,7 @@ func buildValues(firstValue clientmodel.SampleValue, from, to clientmodel.Timest
 	return
 }
 
-func testMakeView(t test.Tester, flushToDisk bool) {
+func testMakeView(t testing.TB, flushToDisk bool) {
 	type in struct {
 		atTime     []getValuesAtTimeOp
 		atInterval []getValuesAtIntervalOp

storage/metric/tiered/view_test.go

@@ -18,11 +18,9 @@ import (
 	"time"
 
 	clientmodel "github.com/prometheus/client_golang/model"
-
-	"github.com/prometheus/prometheus/utility/test"
 )
 
-func testBuilder(t test.Tester) {
+func testBuilder(t testing.TB) {
 	type atTime struct {
 		fingerprint string
 		time        clientmodel.Timestamp

storage/raw/leveldb/test/fixtures.go

@@ -14,6 +14,7 @@
 package test
 
 import (
+	"testing"
 	"code.google.com/p/goprotobuf/proto"
 
 	"github.com/prometheus/prometheus/storage/raw/leveldb"
@@ -50,7 +51,7 @@ type (
 	}
 
 	preparer struct {
-		tester test.Tester
+		tester testing.TB
 	}
 
 	cassetteFactory struct {
@@ -108,7 +109,7 @@ func (f *cassetteFactory) Next() (key proto.Message, value interface{}) {
 }
 
 // NewPreparer creates a new Preparer for use in testing scenarios.
-func NewPreparer(t test.Tester) Preparer {
+func NewPreparer(t testing.TB) Preparer {
 	return preparer{t}
 }
 

utility/test/directory.go

@@ -16,6 +16,7 @@ package test
 import (
 	"io/ioutil"
 	"os"
+	"testing"
 )
 
 const (
@@ -50,7 +51,7 @@ type (
 	// their interactions.
 	temporaryDirectory struct {
 		path   string
-		tester Tester
+		tester testing.TB
 	}
 )
 
@@ -75,7 +76,7 @@ func (t temporaryDirectory) Path() string {
 
 // NewTemporaryDirectory creates a new temporary directory for transient POSIX
 // activities.
-func NewTemporaryDirectory(name string, t Tester) (handler TemporaryDirectory) {
+func NewTemporaryDirectory(name string, t testing.TB) (handler TemporaryDirectory) {
 	var (
 		directory string
 		err       error

utility/test/interface.go

@@ -1,21 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package test
-
-type Tester interface {
-	Error(args ...interface{})
-	Errorf(format string, args ...interface{})
-	Fatal(args ...interface{})
-	Fatalf(format string, args ...interface{})
-}