1// Copyright 2015 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package socket
6
7import (
8	"testing"
9	"time"
10)
11
12func TestBuffer(t *testing.T) {
13	afterChan := make(chan time.Time)
14	ch := make(chan *Message)
15	go func() {
16		ch <- &Message{Kind: "err", Body: "a"}
17		ch <- &Message{Kind: "err", Body: "b"}
18		ch <- &Message{Kind: "out", Body: "1"}
19		ch <- &Message{Kind: "out", Body: "2"}
20		afterChan <- time.Time{} // value itself doesn't matter
21		ch <- &Message{Kind: "out", Body: "3"}
22		ch <- &Message{Kind: "out", Body: "4"}
23		close(ch)
24	}()
25
26	var ms []*Message
27	timeAfter := func(d time.Duration) <-chan time.Time {
28		return afterChan
29	}
30	for m := range buffer(ch, timeAfter) {
31		ms = append(ms, m)
32	}
33	if len(ms) != 3 {
34		t.Fatalf("got %v messages, want 3", len(ms))
35	}
36	if g, w := ms[0].Body, "ab"; g != w {
37		t.Errorf("message 0 body = %q, want %q", g, w)
38	}
39	if g, w := ms[1].Body, "12"; g != w {
40		t.Errorf("message 1 body = %q, want %q", g, w)
41	}
42	if g, w := ms[2].Body, "34"; g != w {
43		t.Errorf("message 2 body = %q, want %q", g, w)
44	}
45}
46
47type killRecorder chan struct{}
48
49func (k killRecorder) Kill() { close(k) }
50
51func TestLimiter(t *testing.T) {
52	ch := make(chan *Message)
53	go func() {
54		var m Message
55		for i := 0; i < msgLimit+10; i++ {
56			ch <- &m
57		}
58		ch <- &Message{Kind: "end"}
59	}()
60
61	kr := make(killRecorder)
62	n := 0
63	for m := range limiter(ch, kr) {
64		n++
65		if n > msgLimit && m.Kind != "end" {
66			t.Errorf("received non-end message after limit")
67		}
68	}
69	if n != msgLimit+1 {
70		t.Errorf("received %v messages, want %v", n, msgLimit+1)
71	}
72	select {
73	case <-kr:
74	case <-time.After(100 * time.Millisecond):
75		t.Errorf("process wasn't killed after reaching limit")
76	}
77}
78