func (s *writerSuite) TestWritingLimitTrace(c *gc.C) {
writer := &loggo.TestWriter{}
err := loggo.RegisterWriter("test", writer, loggo.TRACE)
c.Assert(err, gc.IsNil)
start := time.Now()
s.logger.Criticalf("Something critical.")
s.logger.Errorf("An error.")
s.logger.Warningf("A warning message")
s.logger.Infof("Info message")
s.logger.Tracef("Trace the function")
end := time.Now()
c.Assert(writer.Log, gc.HasLen, 5)
c.Assert(writer.Log[0].Level, gc.Equals, loggo.CRITICAL)
c.Assert(writer.Log[0].Message, gc.Equals, "Something critical.")
c.Assert(writer.Log[0].Timestamp, Between(start, end))
c.Assert(writer.Log[1].Level, gc.Equals, loggo.ERROR)
c.Assert(writer.Log[1].Message, gc.Equals, "An error.")
c.Assert(writer.Log[1].Timestamp, Between(start, end))
c.Assert(writer.Log[2].Level, gc.Equals, loggo.WARNING)
c.Assert(writer.Log[2].Message, gc.Equals, "A warning message")
c.Assert(writer.Log[2].Timestamp, Between(start, end))
c.Assert(writer.Log[3].Level, gc.Equals, loggo.INFO)
c.Assert(writer.Log[3].Message, gc.Equals, "Info message")
c.Assert(writer.Log[3].Timestamp, Between(start, end))
c.Assert(writer.Log[4].Level, gc.Equals, loggo.TRACE)
c.Assert(writer.Log[4].Message, gc.Equals, "Trace the function")
c.Assert(writer.Log[4].Timestamp, Between(start, end))
}
func (s *logwriterSuite) SetUpTest(c *gc.C) {
loggo.ResetLoggers()
loggo.RemoveWriter("default")
s.writer = &loggo.TestWriter{}
err := loggo.RegisterWriter("test", s.writer, loggo.TRACE)
c.Assert(err, gc.IsNil)
s.logger = loggo.GetLogger("test.writer")
// Make it so the logger itself writes all messages.
s.logger.SetLogLevel(loggo.TRACE)
}
func setupTempFileWriter(c *gc.C) (logFile *os.File, cleanup func()) {
loggo.RemoveWriter("test")
logFile, err := ioutil.TempFile("", "loggo-test")
c.Assert(err, gc.IsNil)
cleanup = func() {
logFile.Close()
os.Remove(logFile.Name())
}
writer := loggo.NewSimpleWriter(logFile, &loggo.DefaultFormatter{})
err = loggo.RegisterWriter("testfile", writer, loggo.TRACE)
c.Assert(err, gc.IsNil)
return
}
func (s *writerSuite) TestMultipleWriters(c *gc.C) {
errorWriter := &loggo.TestWriter{}
err := loggo.RegisterWriter("error", errorWriter, loggo.ERROR)
c.Assert(err, gc.IsNil)
warningWriter := &loggo.TestWriter{}
err = loggo.RegisterWriter("warning", warningWriter, loggo.WARNING)
c.Assert(err, gc.IsNil)
infoWriter := &loggo.TestWriter{}
err = loggo.RegisterWriter("info", infoWriter, loggo.INFO)
c.Assert(err, gc.IsNil)
traceWriter := &loggo.TestWriter{}
err = loggo.RegisterWriter("trace", traceWriter, loggo.TRACE)
c.Assert(err, gc.IsNil)
s.logger.Errorf("An error.")
s.logger.Warningf("A warning message")
s.logger.Infof("Info message")
s.logger.Tracef("Trace the function")
c.Assert(errorWriter.Log, gc.HasLen, 1)
c.Assert(warningWriter.Log, gc.HasLen, 2)
c.Assert(infoWriter.Log, gc.HasLen, 3)
c.Assert(traceWriter.Log, gc.HasLen, 4)
}
func (s *writerSuite) TestWritingCapturesFileAndLineAndModule(c *gc.C) {
writer := &loggo.TestWriter{}
err := loggo.RegisterWriter("test", writer, loggo.INFO)
c.Assert(err, gc.IsNil)
s.logger.Infof("Info message")
// WARNING: test checks the line number of the above logger lines, this
// will mean that if the above line moves, the test will fail unless
// updated.
c.Assert(writer.Log, gc.HasLen, 1)
c.Assert(writer.Log[0].Filename, gc.Equals, "writer_test.go")
c.Assert(writer.Log[0].Line, gc.Equals, 113)
c.Assert(writer.Log[0].Module, gc.Equals, "test.writer")
}
func (s *writerBasicsSuite) TestWillWrite(c *gc.C) {
// By default, the root logger watches TRACE messages
c.Assert(loggo.WillWrite(loggo.TRACE), gc.Equals, true)
// Note: ReplaceDefaultWriter doesn't let us change the default log
// level :(
writer, _, err := loggo.RemoveWriter("default")
c.Assert(err, gc.IsNil)
c.Assert(writer, gc.NotNil)
err = loggo.RegisterWriter("default", writer, loggo.CRITICAL)
c.Assert(err, gc.IsNil)
c.Assert(loggo.WillWrite(loggo.TRACE), gc.Equals, false)
c.Assert(loggo.WillWrite(loggo.DEBUG), gc.Equals, false)
c.Assert(loggo.WillWrite(loggo.INFO), gc.Equals, false)
c.Assert(loggo.WillWrite(loggo.WARNING), gc.Equals, false)
c.Assert(loggo.WillWrite(loggo.CRITICAL), gc.Equals, true)
}
func (s *logwriterSuite) BenchmarkLoggingDiskWriterNoMessages(c *gc.C) {
logFile, cleanup := setupTempFileWriter(c)
defer cleanup()
// Change the log level
writer, _, err := loggo.RemoveWriter("testfile")
c.Assert(err, gc.IsNil)
loggo.RegisterWriter("testfile", writer, loggo.WARNING)
msg := "just a simple warning for %d"
for i := 0; i < c.N; i++ {
s.logger.Debugf(msg, i)
}
offset, err := logFile.Seek(0, os.SEEK_CUR)
c.Assert(err, gc.IsNil)
c.Assert(offset, gc.Equals, int64(0),
gc.Commentf("Data was written to the log file."))
}
func (*writerBasicsSuite) TestRegisterWriterTypedNil(c *gc.C) {
// If the interface is a typed nil, we have to trust the user.
var writer *loggo.TestWriter
err := loggo.RegisterWriter("nil", writer, loggo.INFO)
c.Assert(err, gc.IsNil)
}
func (*writerBasicsSuite) TestRegisterNilWriter(c *gc.C) {
err := loggo.RegisterWriter("nil", nil, loggo.INFO)
c.Assert(err, gc.ErrorMatches, `Writer cannot be nil`)
}
func (*writerBasicsSuite) TestRegisterWriterExistingName(c *gc.C) {
err := loggo.RegisterWriter("default", &loggo.TestWriter{}, loggo.INFO)
c.Assert(err, gc.ErrorMatches, `there is already a Writer registered with the name "default"`)
}