Merge master into breakout_swarm

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

gateway/vendor/github.com/prometheus/common/model/metric_test.go

@@ -0,0 +1,132 @@
+// Copyright 2013 The Prometheus Authors
+// 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 model
+
+import "testing"
+
+func testMetric(t testing.TB) {
+	var scenarios = []struct {
+		input           LabelSet
+		fingerprint     Fingerprint
+		fastFingerprint Fingerprint
+	}{
+		{
+			input:           LabelSet{},
+			fingerprint:     14695981039346656037,
+			fastFingerprint: 14695981039346656037,
+		},
+		{
+			input: LabelSet{
+				"first_name":   "electro",
+				"occupation":   "robot",
+				"manufacturer": "westinghouse",
+			},
+			fingerprint:     5911716720268894962,
+			fastFingerprint: 11310079640881077873,
+		},
+		{
+			input: LabelSet{
+				"x": "y",
+			},
+			fingerprint:     8241431561484471700,
+			fastFingerprint: 13948396922932177635,
+		},
+		{
+			input: LabelSet{
+				"a": "bb",
+				"b": "c",
+			},
+			fingerprint:     3016285359649981711,
+			fastFingerprint: 3198632812309449502,
+		},
+		{
+			input: LabelSet{
+				"a":  "b",
+				"bb": "c",
+			},
+			fingerprint:     7122421792099404749,
+			fastFingerprint: 5774953389407657638,
+		},
+	}
+
+	for i, scenario := range scenarios {
+		input := Metric(scenario.input)
+
+		if scenario.fingerprint != input.Fingerprint() {
+			t.Errorf("%d. expected %d, got %d", i, scenario.fingerprint, input.Fingerprint())
+		}
+		if scenario.fastFingerprint != input.FastFingerprint() {
+			t.Errorf("%d. expected %d, got %d", i, scenario.fastFingerprint, input.FastFingerprint())
+		}
+	}
+}
+
+func TestMetric(t *testing.T) {
+	testMetric(t)
+}
+
+func BenchmarkMetric(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		testMetric(b)
+	}
+}
+
+func TestMetricNameIsValid(t *testing.T) {
+	var scenarios = []struct {
+		mn    LabelValue
+		valid bool
+	}{
+		{
+			mn:    "Avalid_23name",
+			valid: true,
+		},
+		{
+			mn:    "_Avalid_23name",
+			valid: true,
+		},
+		{
+			mn:    "1valid_23name",
+			valid: false,
+		},
+		{
+			mn:    "avalid_23name",
+			valid: true,
+		},
+		{
+			mn:    "Ava:lid_23name",
+			valid: true,
+		},
+		{
+			mn:    "a lid_23name",
+			valid: false,
+		},
+		{
+			mn:    ":leading_colon",
+			valid: true,
+		},
+		{
+			mn:    "colon:in:the:middle",
+			valid: true,
+		},
+	}
+
+	for _, s := range scenarios {
+		if IsValidMetricName(s.mn) != s.valid {
+			t.Errorf("Expected %v for %q using IsValidMetricName function", s.valid, s.mn)
+		}
+		if MetricNameRE.MatchString(string(s.mn)) != s.valid {
+			t.Errorf("Expected %v for %q using regexp matching", s.valid, s.mn)
+		}
+	}
+}