Launcher, app/base, sentry, update service

internal/logging/rotator_test.go

@@ -0,0 +1,131 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package logging
+
+import (
+	"bytes"
+	"io"
+	"io/ioutil"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+type WriteCloser struct {
+	bytes.Buffer
+}
+
+func (c *WriteCloser) Close() error {
+	return nil
+}
+
+func TestRotator(t *testing.T) {
+	n := 0
+
+	getFile := func() (io.WriteCloser, error) {
+		n++
+		return &WriteCloser{}, nil
+	}
+
+	r, err := NewRotator(10, getFile)
+	require.NoError(t, err)
+
+	_, err = r.Write([]byte("12345"))
+	require.NoError(t, err)
+	assert.Equal(t, 1, n)
+
+	_, err = r.Write([]byte("12345"))
+	require.NoError(t, err)
+	assert.Equal(t, 1, n)
+
+	_, err = r.Write([]byte("01234"))
+	require.NoError(t, err)
+	assert.Equal(t, 2, n)
+
+	_, err = r.Write([]byte("01234"))
+	require.NoError(t, err)
+	assert.Equal(t, 2, n)
+
+	_, err = r.Write([]byte("01234"))
+	require.NoError(t, err)
+	assert.Equal(t, 3, n)
+
+	_, err = r.Write([]byte("01234"))
+	require.NoError(t, err)
+	assert.Equal(t, 3, n)
+
+	_, err = r.Write([]byte("01234"))
+	require.NoError(t, err)
+	assert.Equal(t, 4, n)
+}
+
+func BenchmarkRotateRAMFile(b *testing.B) {
+	dir, err := ioutil.TempDir("", "rotate-benchmark")
+	require.NoError(b, err)
+	defer os.RemoveAll(dir) // nolint[errcheck]
+
+	benchRotate(b, MaxLogSize, getTestFile(b, dir, MaxLogSize-1))
+}
+
+func BenchmarkRotateDiskFile(b *testing.B) {
+	cache, err := os.UserCacheDir()
+	require.NoError(b, err)
+
+	dir, err := ioutil.TempDir(cache, "rotate-benchmark")
+	require.NoError(b, err)
+	defer os.RemoveAll(dir) // nolint[errcheck]
+
+	benchRotate(b, MaxLogSize, getTestFile(b, dir, MaxLogSize-1))
+}
+
+func benchRotate(b *testing.B, logSize int, getFile func() (io.WriteCloser, error)) {
+	r, err := NewRotator(logSize, getFile)
+	require.NoError(b, err)
+
+	for n := 0; n < b.N; n++ {
+		require.NoError(b, r.rotate())
+
+		f, ok := r.wc.(*os.File)
+		require.True(b, ok)
+		require.NoError(b, os.Remove(f.Name()))
+	}
+}
+
+func getTestFile(b *testing.B, dir string, length int) func() (io.WriteCloser, error) {
+	return func() (io.WriteCloser, error) {
+		b.StopTimer()
+		defer b.StartTimer()
+
+		f, err := ioutil.TempFile(dir, "log")
+		if err != nil {
+			return nil, err
+		}
+
+		if _, err := f.Write(make([]byte, length)); err != nil {
+			return nil, err
+		}
+
+		if err := f.Sync(); err != nil {
+			return nil, err
+		}
+
+		return f, nil
+	}
+}