support reserve-job command (#50)

conn.go

@@ -241,6 +241,15 @@ func (c *Conn) Peek(id uint64) (body []byte, err error) {
 	return c.readResp(r, true, "FOUND %d", &id)
 }
 
+// ReserveJob reserves the specified job by id from the server.
+func (c *Conn) ReserveJob(id uint64) (body []byte, err error) {
+	r, err := c.cmd(nil, nil, nil, "reserve-job", id)
+	if err != nil {
+		return nil, err
+	}
+	return c.readResp(r, true, "RESERVED %d", &id)
+}
+
 // Stats retrieves global statistics from the server.
 func (c *Conn) Stats() (map[string]string, error) {
 	r, err := c.cmd(nil, nil, nil, "stats")

conn_test.go

@@ -197,6 +197,21 @@ func TestPeekTwice(t *testing.T) {
 	}
 }
 
+func TestReserveJob(t *testing.T) {
+	c := NewConn(mock("reserve-job 1\r\n", "RESERVED 1 1\r\nx\r\n"))
+
+	body, err := c.ReserveJob(1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(body) != 1 || body[0] != 'x' {
+		t.Fatalf("bad body, expected %#v, got %#v", "x", string(body))
+	}
+	if err = c.Close(); err != nil {
+		t.Fatal(err)
+	}
+}
+
 func TestRelease(t *testing.T) {
 	c := NewConn(mock("release 1 3 2\r\n", "RELEASED\r\n"))