add debug level test; add debug to interface

Author: hampgoodwin

log/logger.go

@@ -4,6 +4,7 @@ type Logger interface {
 	Set(key string, value Valuer) Logger
 	With(ctxs ...Context) Logger
 
+	Debug() Logger
 	Info() Logger
 	Warn() Logger
 	Error() Logger

log/logger_test.go

@@ -166,6 +166,14 @@ func Test_ReplaceContextValue(t *testing.T) {
 	a.Contains(buffer.String(), "level=warn")
 }
 
+func Test_Debug(t *testing.T) {
+	a, buffer, log := Setup(t)
+
+	log.Debug().Logf("message")
+
+	a.Contains(buffer.String(), "level=debug")
+}
+
 func Test_Info(t *testing.T) {
 	a, buffer, log := Setup(t)