Merge master into breakout_swarm

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

gateway/vendor/github.com/prometheus/procfs/bcache/get_test.go

@@ -0,0 +1,114 @@
+// Copyright 2017 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 bcache
+
+import (
+	"math"
+	"testing"
+)
+
+func TestDehumanizeTests(t *testing.T) {
+	dehumanizeTests := []struct {
+		in      []byte
+		out     uint64
+		invalid bool
+	}{
+		{
+			in:  []byte("542k"),
+			out: 555008,
+		},
+		{
+			in:  []byte("322M"),
+			out: 337641472,
+		},
+		{
+			in:  []byte("1.1k"),
+			out: 1124,
+		},
+		{
+			in:  []byte("1.9k"),
+			out: 1924,
+		},
+		{
+			in:  []byte("1.10k"),
+			out: 2024,
+		},
+		{
+			in:      []byte(""),
+			out:     0,
+			invalid: true,
+		},
+	}
+	for _, tst := range dehumanizeTests {
+		got, err := dehumanize(tst.in)
+		if tst.invalid && err == nil {
+			t.Error("expected an error, but none occurred")
+		}
+		if !tst.invalid && err != nil {
+			t.Errorf("unexpected error: %v", err)
+		}
+		if got != tst.out {
+			t.Errorf("dehumanize: '%s', want %d, got %d", tst.in, tst.out, got)
+		}
+	}
+}
+
+func TestParsePseudoFloatTests(t *testing.T) {
+	parsePseudoFloatTests := []struct {
+		in  string
+		out float64
+	}{
+		{
+			in:  "1.1",
+			out: float64(1.097656),
+		},
+		{
+			in:  "1.9",
+			out: float64(1.878906),
+		},
+		{
+			in:  "1.10",
+			out: float64(1.976562),
+		},
+	}
+	for _, tst := range parsePseudoFloatTests {
+		got, err := parsePseudoFloat(tst.in)
+		if err != nil || math.Abs(got-tst.out) > 0.0001 {
+			t.Errorf("parsePseudoFloat: %s, want %f, got %f", tst.in, tst.out, got)
+		}
+	}
+}
+
+func TestPriorityStats(t *testing.T) {
+	var want = PriorityStats{
+		UnusedPercent:   99,
+		MetadataPercent: 5,
+	}
+	var (
+		in     string
+		gotErr error
+		got    PriorityStats
+	)
+	in = "Metadata:       5%"
+	gotErr = parsePriorityStats(in, &got)
+	if gotErr != nil || got.MetadataPercent != want.MetadataPercent {
+		t.Errorf("parsePriorityStats: '%s', want %d, got %d", in, want.MetadataPercent, got.MetadataPercent)
+	}
+
+	in = "Unused:         99%"
+	gotErr = parsePriorityStats(in, &got)
+	if gotErr != nil || got.UnusedPercent != want.UnusedPercent {
+		t.Errorf("parsePriorityStats: '%s', want %d, got %d", in, want.UnusedPercent, got.UnusedPercent)
+	}
+}