func Test_Logger_NewWithDevNull(t *testing.T) {
logger, err := New("null")
assert.Nil(t, err)
assert.IsType(t, (*os.File)(nil), logger.out)
logger, err = New("nil")
assert.Nil(t, err)
assert.IsType(t, (*os.File)(nil), logger.out)
}
func Test_Logger_Output(t *testing.T) {
// mock os.Stdout
stdout := os.Stdout
r, w, _ := os.Pipe()
os.Stdout = w
s := "output testing"
expected := s + "\n"
testCases := map[Level]string{
Ldebug: "[DEBUG]",
Linfo: "[INFO]",
Lwarn: "[WARN]",
Lerror: "[ERROR]",
Lfatal: "[FATAL]",
Lpanic: "[PANIC]",
Ltrace: "[Stack]",
}
logger, _ := New("stdout")
logger.SetSkip(1)
for level, tag := range testCases {
logger.Output(level, s)
buf := make([]byte, 1024)
n, err := r.Read(buf)
assert.Nil(t, err)
assert.Contains(t, string(buf[:n]), tag)
assert.Contains(t, string(buf[:n]), expected)
}
os.Stdout = stdout
}
func Test_Logger_AddTags(t *testing.T) {
// mock os.Stdout
stdout := os.Stdout
r, w, _ := os.Pipe()
os.Stdout = w
tags := []string{"testing", "logger"}
newTags := []string{"new_testing", "logger"}
s := "output testing"
expected := "[DEBUG, testing, logger, new_testing]"
logger, _ := New("stdout")
logger.SetSkip(1)
logger.SetTags(tags...)
logger.AddTags(newTags...)
logger.Debug(s)
buf := make([]byte, 1024)
n, err := r.Read(buf)
assert.Nil(t, err)
assert.Contains(t, string(buf[:n]), expected)
os.Stdout = stdout
}
func Test_Logger_NewWithFile(t *testing.T) {
filename := "logger-testing"
logger, err := New(filename)
assert.Nil(t, err)
assert.IsType(t, (*os.File)(nil), logger.out)
os.Remove(filename)
}
func Test_Logger_NewWithStderr(t *testing.T) {
logger, err := New("stderr")
assert.Nil(t, err)
assert.Equal(t, os.Stderr, logger.out)
}
func Test_Logger_New(t *testing.T) {
logger, err := New("nil")
assert.Nil(t, err)
assert.Implements(t, (*io.Writer)(nil), logger)
}