104 lines
2.9 KiB
Go
104 lines
2.9 KiB
Go
// Copyright 2020 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package logging
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import (
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"log/slog"
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"os"
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"strings"
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"testing"
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"github.com/grafana/regexp"
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"github.com/stretchr/testify/require"
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)
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func getLogLines(t *testing.T, name string) []string {
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content, err := os.ReadFile(name)
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require.NoError(t, err)
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lines := strings.Split(string(content), "\n")
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for i := len(lines) - 1; i >= 0; i-- {
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if lines[i] == "" {
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lines = append(lines[:i], lines[i+1:]...)
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}
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}
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return lines
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}
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func TestJSONFileLogger_basic(t *testing.T) {
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f, err := os.CreateTemp("", "logging")
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require.NoError(t, err)
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defer func() {
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require.NoError(t, f.Close())
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require.NoError(t, os.Remove(f.Name()))
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}()
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logHandler, err := NewJSONFileLogger(f.Name())
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require.NoError(t, err)
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require.NotNil(t, logHandler, "logger handler can't be nil")
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logger := slog.New(logHandler)
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logger.Info("test", "hello", "world")
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r := getLogLines(t, f.Name())
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require.Len(t, r, 1, "expected 1 log line")
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result, err := regexp.Match(`^{"time":"[^"]+","level":"INFO","source":"\w+.go:\d+","msg":"test","hello":"world"}`, []byte(r[0]))
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require.NoError(t, err)
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require.True(t, result, "unexpected content: %s", r)
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err = logHandler.Close()
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require.NoError(t, err)
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err = logHandler.file.Close()
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require.Error(t, err)
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require.True(t, strings.HasSuffix(err.Error(), os.ErrClosed.Error()), "file not closed")
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}
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func TestJSONFileLogger_parallel(t *testing.T) {
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f, err := os.CreateTemp("", "logging")
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require.NoError(t, err)
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defer func() {
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require.NoError(t, f.Close())
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require.NoError(t, os.Remove(f.Name()))
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}()
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logHandler, err := NewJSONFileLogger(f.Name())
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require.NoError(t, err)
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require.NotNil(t, logHandler, "logger handler can't be nil")
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logger := slog.New(logHandler)
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logger.Info("test", "hello", "world")
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logHandler2, err := NewJSONFileLogger(f.Name())
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require.NoError(t, err)
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require.NotNil(t, logHandler2, "logger handler can't be nil")
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logger2 := slog.New(logHandler2)
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logger2.Info("test", "hello", "world")
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err = logHandler.Close()
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require.NoError(t, err)
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err = logHandler.file.Close()
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require.Error(t, err)
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require.True(t, strings.HasSuffix(err.Error(), os.ErrClosed.Error()), "file not closed")
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err = logHandler2.Close()
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require.NoError(t, err)
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err = logHandler2.file.Close()
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require.Error(t, err)
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require.True(t, strings.HasSuffix(err.Error(), os.ErrClosed.Error()), "file not closed")
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}
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