code review 157168: Initial syslog module. It's my first go, so please bare...

src/pkg/syslog/syslog_test.go

Index: src/pkg/syslog/syslog_test.go
===================================================================
new file mode 100644
--- /dev/null
+++ b/src/pkg/syslog/syslog_test.go
@@ -0,0 +1,95 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+package syslog
+
+import (
+	"io";
+	"log";
+	"net";
+	"testing";
+)
+
+var serverAddr string
+
+func runSyslog(c net.PacketConn, done chan<- string) {
+	var buf [4096]byte;
+	var rcvd string = "";
+	for {
+		n, _, err := c.ReadFrom(&buf);
+		if err != nil || n == 0 {
+			break
+		}
+		rcvd += string(buf[0:n]);
+	}
+	done <- rcvd;
+}
+
+func startServer(done chan<- string) {
+	c, e := net.ListenPacket("udp", ":0");
+	if e != nil {
+		log.Exitf("net.ListenPacket failed udp :0 %v", e)
+	}
+	serverAddr = c.LocalAddr().String();
+	c.SetReadTimeout(10e6);	// 10ms
+	go runSyslog(c, done);
+}
+
+func TestNew(t *testing.T) {
+	s, err := New(LOG_INFO, "");
+	if err != nil {
+		t.Fatalf("New() failed: %s", err)
+	}
+	// Don't send any messages.
+	s.Close();
+}
+
+func TestNewLogger(t *testing.T) {
+	f := NewLogger(LOG_INFO, 0);
+	if f == nil {
+		t.Errorf("NewLogger() failed\n")
+	}
+}
+
+func TestDial(t *testing.T) {
+	l, err := Dial("", "", LOG_ERR, "syslog_test");
+	if err != nil {
+		t.Fatalf("Dial() failed: %s", err)
+	}
+	l.Close();
+}
+
+func TestUDPDial(t *testing.T) {
+	done := make(chan string);
+	startServer(done);
+	l, err := Dial("udp", serverAddr, LOG_INFO, "syslog_test");
+	if err != nil {
+		t.Fatalf("syslog.Dial() failed: %s", err)
+	}
+	msg := "udp test";
+	l.Info(msg);
+	expected := "<6>syslog_test: udp test\n";
+	rcvd := <-done;
+	if rcvd != expected {
+		t.Fatalf("s.Info() = '%q', but wanted '%q'", rcvd, expected)
+	}
+}
+
+func TestWrite(t *testing.T) {
+	done := make(chan string);
+	startServer(done);
+	l, err := Dial("udp", serverAddr, LOG_ERR, "syslog_test");
+	if err != nil {
+		t.Fatalf("syslog.Dial() failed: %s", err)
+	}
+	msg := "write test";
+	_, err = io.WriteString(l, msg);
+	if err != nil {
+		t.Fatalf("WriteString() failed: %s", err)
+	}
+	expected := "<3>syslog_test: write test\n";
+	rcvd := <-done;
+	if rcvd != expected {
+		t.Fatalf("s.Info() = '%q', but wanted '%q'", rcvd, expected)
+	}
+}