File: flow_test.go

package info (click to toggle)
golang-golang-x-net-dev 1:0.0+git20181201.351d144+dfsg-2
  • links: PTS, VCS
  • area: main
  • in suites: experimental, sid
  • size: 5,572 kB
  • sloc: makefile: 53; asm: 18
file content (87 lines) | stat: -rw-r--r-- 1,961 bytes parent folder | download | duplicates (9)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
// Copyright 2014 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 http2

import "testing"

func TestFlow(t *testing.T) {
	var st flow
	var conn flow
	st.add(3)
	conn.add(2)

	if got, want := st.available(), int32(3); got != want {
		t.Errorf("available = %d; want %d", got, want)
	}
	st.setConnFlow(&conn)
	if got, want := st.available(), int32(2); got != want {
		t.Errorf("after parent setup, available = %d; want %d", got, want)
	}

	st.take(2)
	if got, want := conn.available(), int32(0); got != want {
		t.Errorf("after taking 2, conn = %d; want %d", got, want)
	}
	if got, want := st.available(), int32(0); got != want {
		t.Errorf("after taking 2, stream = %d; want %d", got, want)
	}
}

func TestFlowAdd(t *testing.T) {
	var f flow
	if !f.add(1) {
		t.Fatal("failed to add 1")
	}
	if !f.add(-1) {
		t.Fatal("failed to add -1")
	}
	if got, want := f.available(), int32(0); got != want {
		t.Fatalf("size = %d; want %d", got, want)
	}
	if !f.add(1<<31 - 1) {
		t.Fatal("failed to add 2^31-1")
	}
	if got, want := f.available(), int32(1<<31-1); got != want {
		t.Fatalf("size = %d; want %d", got, want)
	}
	if f.add(1) {
		t.Fatal("adding 1 to max shouldn't be allowed")
	}
}

func TestFlowAddOverflow(t *testing.T) {
	var f flow
	if !f.add(0) {
		t.Fatal("failed to add 0")
	}
	if !f.add(-1) {
		t.Fatal("failed to add -1")
	}
	if !f.add(0) {
		t.Fatal("failed to add 0")
	}
	if !f.add(1) {
		t.Fatal("failed to add 1")
	}
	if !f.add(1) {
		t.Fatal("failed to add 1")
	}
	if !f.add(0) {
		t.Fatal("failed to add 0")
	}
	if !f.add(-3) {
		t.Fatal("failed to add -3")
	}
	if got, want := f.available(), int32(-2); got != want {
		t.Fatalf("size = %d; want %d", got, want)
	}
	if !f.add(1<<31 - 1) {
		t.Fatal("failed to add 2^31-1")
	}
	if got, want := f.available(), int32(1+-3+(1<<31-1)); got != want {
		t.Fatalf("size = %d; want %d", got, want)
	}

}