first init

logger_test.go

@@ -0,0 +1,43 @@
+package modbus
+
+import (
+	"bytes"
+	"log"
+	"testing"
+)
+
+func TestClientCustomLogger(t *testing.T) {
+	var buf    bytes.Buffer
+	var logger *log.Logger
+
+	logger = log.New(&buf, "external-prefix: ", 0)
+
+	_, _ = NewClient(&ClientConfiguration{
+		Logger: logger,
+		URL: "sometype://sometarget",
+	})
+
+	if buf.String() != "external-prefix: modbus-client(sometarget) [error]: unsupported client type 'sometype'\n" {
+		t.Errorf("unexpected logger output '%s'", buf.String())
+	}
+
+	return
+}
+
+func TestServerCustomLogger(t *testing.T) {
+	var buf    bytes.Buffer
+	var logger *log.Logger
+
+	logger = log.New(&buf, "external-prefix: ", 0)
+
+	_, _ = NewServer(&ServerConfiguration{
+		Logger: logger,
+		URL: "tcp://",
+	}, nil)
+
+	if buf.String() != "external-prefix: modbus-server() [error]: missing host part in URL 'tcp://'\n" {
+		t.Errorf("unexpected logger output '%s'", buf.String())
+	}
+
+	return
+}