a bit linting and some tests are online again

Former-commit-id: bd5463a169a36b078dba1c1b6e7dd3ffbd627617

core/logger/logger_test.go

@@ -0,0 +1,18 @@
+// black-box testing
+package logger_test
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/kataras/iris/core/logger"
+)
+
+func TestLog(t *testing.T) {
+	msg := "Hello this is me"
+	l := &bytes.Buffer{}
+	logger.Log(l, msg)
+	if expected, got := msg, l.String(); expected != got {
+		t.Fatalf("expected %s but got %s", expected, got)
+	}
+}