adding in logging

vendor/go.uber.org/zap/buffer/buffer_test.go

@@ -0,0 +1,91 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package buffer
+
+import (
+	"bytes"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestBufferWrites(t *testing.T) {
+	buf := NewPool().Get()
+
+	tests := []struct {
+		desc string
+		f    func()
+		want string
+	}{
+		{"AppendByte", func() { buf.AppendByte('v') }, "v"},
+		{"AppendString", func() { buf.AppendString("foo") }, "foo"},
+		{"AppendIntPositive", func() { buf.AppendInt(42) }, "42"},
+		{"AppendIntNegative", func() { buf.AppendInt(-42) }, "-42"},
+		{"AppendUint", func() { buf.AppendUint(42) }, "42"},
+		{"AppendBool", func() { buf.AppendBool(true) }, "true"},
+		{"AppendFloat64", func() { buf.AppendFloat(3.14, 64) }, "3.14"},
+		// Intenationally introduce some floating-point error.
+		{"AppendFloat32", func() { buf.AppendFloat(float64(float32(3.14)), 32) }, "3.14"},
+		{"AppendWrite", func() { buf.Write([]byte("foo")) }, "foo"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.desc, func(t *testing.T) {
+			buf.Reset()
+			tt.f()
+			assert.Equal(t, tt.want, buf.String(), "Unexpected buffer.String().")
+			assert.Equal(t, tt.want, string(buf.Bytes()), "Unexpected string(buffer.Bytes()).")
+			assert.Equal(t, len(tt.want), buf.Len(), "Unexpected buffer length.")
+			// We're not writing more than a kibibyte in tests.
+			assert.Equal(t, _size, buf.Cap(), "Expected buffer capacity to remain constant.")
+		})
+	}
+}
+
+func BenchmarkBuffers(b *testing.B) {
+	// Because we use the strconv.AppendFoo functions so liberally, we can't
+	// use the standard library's bytes.Buffer anyways (without incurring a
+	// bunch of extra allocations). Nevertheless, let's make sure that we're
+	// not losing any precious nanoseconds.
+	str := strings.Repeat("a", 1024)
+	slice := make([]byte, 1024)
+	buf := bytes.NewBuffer(slice)
+	custom := NewPool().Get()
+	b.Run("ByteSlice", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			slice = append(slice, str...)
+			slice = slice[:0]
+		}
+	})
+	b.Run("BytesBuffer", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			buf.WriteString(str)
+			buf.Reset()
+		}
+	})
+	b.Run("CustomBuffer", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			custom.AppendString(str)
+			custom.Reset()
+		}
+	})
+}