forked from juju/loggo
/
writer_test.go
244 lines (201 loc) · 7.36 KB
/
writer_test.go
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// Copyright 2014 Canonical Ltd.
// Licensed under the LGPLv3, see LICENCE file for details.
package loggo_test
import (
"fmt"
"time"
gc "gopkg.in/check.v1"
"github.com/juju/loggo"
)
type writerBasicsSuite struct{}
var _ = gc.Suite(&writerBasicsSuite{})
func (s *writerBasicsSuite) TearDownTest(c *gc.C) {
loggo.ResetWriters()
}
func (*writerBasicsSuite) TestRemoveDefaultWriter(c *gc.C) {
defaultWriter, level, err := loggo.RemoveWriter("default")
c.Assert(err, gc.IsNil)
c.Assert(level, gc.Equals, loggo.TRACE)
c.Assert(defaultWriter, gc.NotNil)
// Trying again fails.
defaultWriter, level, err = loggo.RemoveWriter("default")
c.Assert(err, gc.ErrorMatches, `Writer "default" is not registered`)
c.Assert(level, gc.Equals, loggo.UNSPECIFIED)
c.Assert(defaultWriter, gc.IsNil)
}
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"`)
}
func (*writerBasicsSuite) TestRegisterNilWriter(c *gc.C) {
err := loggo.RegisterWriter("nil", nil, loggo.INFO)
c.Assert(err, gc.ErrorMatches, `Writer cannot be nil`)
}
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) TestReplaceDefaultWriter(c *gc.C) {
oldWriter, err := loggo.ReplaceDefaultWriter(&loggo.TestWriter{})
c.Assert(oldWriter, gc.NotNil)
c.Assert(err, gc.IsNil)
}
func (*writerBasicsSuite) TestReplaceDefaultWriterWithNil(c *gc.C) {
oldWriter, err := loggo.ReplaceDefaultWriter(nil)
c.Assert(oldWriter, gc.IsNil)
c.Assert(err, gc.ErrorMatches, "Writer cannot be nil")
}
func (*writerBasicsSuite) TestReplaceDefaultWriterNoDefault(c *gc.C) {
loggo.RemoveWriter("default")
oldWriter, err := loggo.ReplaceDefaultWriter(&loggo.TestWriter{})
c.Assert(oldWriter, gc.IsNil)
c.Assert(err, gc.ErrorMatches, `there is no "default" 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)
}
type writerSuite struct {
logger loggo.Logger
}
var _ = gc.Suite(&writerSuite{})
func (s *writerSuite) SetUpTest(c *gc.C) {
loggo.ResetLoggers()
loggo.RemoveWriter("default")
s.logger = loggo.GetLogger("test.writer")
// Make it so the logger itself writes all messages.
s.logger.SetLogLevel(loggo.TRACE)
}
func (s *writerSuite) TearDownTest(c *gc.C) {
loggo.ResetWriters()
}
func (s *writerSuite) TearDownSuite(c *gc.C) {
loggo.ResetLoggers()
}
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") //tag capture
log := writer.Log()
c.Assert(log, gc.HasLen, 1)
assertLocation(c, log[0], "capture")
c.Assert(log[0].Module, gc.Equals, "test.writer")
}
func (s *writerSuite) TestWritingLimitWarning(c *gc.C) {
writer := &loggo.TestWriter{}
err := loggo.RegisterWriter("test", writer, loggo.WARNING)
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()
log := writer.Log()
c.Assert(log, gc.HasLen, 3)
c.Assert(log[0].Level, gc.Equals, loggo.CRITICAL)
c.Assert(log[0].Message, gc.Equals, "Something critical.")
c.Assert(log[0].Timestamp, Between(start, end))
c.Assert(log[1].Level, gc.Equals, loggo.ERROR)
c.Assert(log[1].Message, gc.Equals, "An error.")
c.Assert(log[1].Timestamp, Between(start, end))
c.Assert(log[2].Level, gc.Equals, loggo.WARNING)
c.Assert(log[2].Message, gc.Equals, "A warning message")
c.Assert(log[2].Timestamp, Between(start, end))
}
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()
log := writer.Log()
c.Assert(log, gc.HasLen, 5)
c.Assert(log[0].Level, gc.Equals, loggo.CRITICAL)
c.Assert(log[0].Message, gc.Equals, "Something critical.")
c.Assert(log[0].Timestamp, Between(start, end))
c.Assert(log[1].Level, gc.Equals, loggo.ERROR)
c.Assert(log[1].Message, gc.Equals, "An error.")
c.Assert(log[1].Timestamp, Between(start, end))
c.Assert(log[2].Level, gc.Equals, loggo.WARNING)
c.Assert(log[2].Message, gc.Equals, "A warning message")
c.Assert(log[2].Timestamp, Between(start, end))
c.Assert(log[3].Level, gc.Equals, loggo.INFO)
c.Assert(log[3].Message, gc.Equals, "Info message")
c.Assert(log[3].Timestamp, Between(start, end))
c.Assert(log[4].Level, gc.Equals, loggo.TRACE)
c.Assert(log[4].Message, gc.Equals, "Trace the function")
c.Assert(log[4].Timestamp, Between(start, end))
}
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 Between(start, end time.Time) gc.Checker {
if end.Before(start) {
return &betweenChecker{end, start}
}
return &betweenChecker{start, end}
}
type betweenChecker struct {
start, end time.Time
}
func (checker *betweenChecker) Info() *gc.CheckerInfo {
info := gc.CheckerInfo{
Name: "Between",
Params: []string{"obtained"},
}
return &info
}
func (checker *betweenChecker) Check(params []interface{}, names []string) (result bool, error string) {
when, ok := params[0].(time.Time)
if !ok {
return false, "obtained value type must be time.Time"
}
if when.Before(checker.start) {
return false, fmt.Sprintf("obtained time %q is before start time %q", when, checker.start)
}
if when.After(checker.end) {
return false, fmt.Sprintf("obtained time %q is after end time %q", when, checker.end)
}
return true, ""
}