/
reader_test.go
141 lines (124 loc) · 3.74 KB
/
reader_test.go
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// Copyright 2014 The Chromium 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 (
"bytes"
"io/ioutil"
"testing/iotest"
. "gopkg.in/check.v1"
)
type ReaderTest struct{}
func (t *ReaderTest) TestReadsWithVaryingPrefixSizes(c *C) {
table := [...]struct {
bits BitSequence
expect string
}{
{BitSequence{0x0000000000000000, 0},
"\xff"},
{BitSequence{0x1100000000000000, 8},
"\x11\xff"},
{BitSequence{0x1122000000000000, 16},
"\x11\x22\xff"},
{BitSequence{0x1122330000000000, 24},
"\x11\x22\x33\xff"},
{BitSequence{0x1122334400000000, 32},
"\x11\x22\x33\x44\xff"},
{BitSequence{0x1122334455000000, 40},
"\x11\x22\x33\x44\x55\xff"},
{BitSequence{0x1122334455660000, 48},
"\x11\x22\x33\x44\x55\x66\xff"},
{BitSequence{0x1122334455667700, 56},
"\x11\x22\x33\x44\x55\x66\x77\xff"},
{BitSequence{0x1122334455667788, 64},
"\x11\x22\x33\x44\x55\x66\x77\x88\xff"},
}
for i, fixture := range table {
r := &Reader{
reader: bytes.NewReader([]byte("\xff")),
bits: fixture.bits}
buffer, err := ioutil.ReadAll(r)
c.Check(string(buffer), Equals, fixture.expect, Commentf("i=%v", i))
c.Check(err, IsNil)
}
}
func (t *ReaderTest) TestPeekBitsWithVaryingPrefixSizes(c *C) {
table := [...]struct {
bits BitSequence
input string
}{
{BitSequence{0x0000000000000000, 0},
"\x11\x22\x33\x44\x55\x66\x77\x88"},
{BitSequence{0x1000000000000000, 4},
"\x12\x23\x34\x45\x56\x67\x78\x80"},
{BitSequence{0x1100000000000000, 8},
"\x22\x33\x44\x55\x66\x77\x88"},
{BitSequence{0x1120000000000000, 12},
"\x23\x34\x45\x56\x67\x78\x80"},
{BitSequence{0x1122000000000000, 16},
"\x33\x44\x55\x66\x77\x88"},
{BitSequence{0x1122300000000000, 20},
"\x34\x45\x56\x67\x78\x80"},
{BitSequence{0x1122330000000000, 24},
"\x44\x55\x66\x77\x88"},
{BitSequence{0x1122334000000000, 28},
"\x45\x56\x67\x78\x80"},
{BitSequence{0x1122334400000000, 32},
"\x55\x66\x77\x88"},
{BitSequence{0x1122334450000000, 36},
"\x56\x67\x78\x80"},
{BitSequence{0x1122334455000000, 40},
"\x66\x77\x88"},
{BitSequence{0x1122334455600000, 44},
"\x67\x78\x80"},
{BitSequence{0x1122334455660000, 48},
"\x77\x88"},
{BitSequence{0x1122334455667000, 52},
"\x78\x80"},
{BitSequence{0x1122334455667700, 56},
"\x88"},
{BitSequence{0x1122334455667780, 60},
"\x80"},
{BitSequence{0x1122334455667788, 64},
""},
}
for i, fixture := range table {
r := &Reader{
reader: bytes.NewReader([]byte(fixture.input)),
bits: fixture.bits}
bits, _ := r.PeekBits()
if fixture.bits.Length%8 == 4 {
c.Check(bits, Equals, BitSequence{0x1122334455667780, 60},
Commentf("i=%d", i))
} else {
c.Check(bits, Equals, BitSequence{0x1122334455667788, 64},
Commentf("i=%d", i))
}
}
}
func (t *ReaderTest) TestPeekBitsWithShortReads(c *C) {
r := &Reader{
reader: iotest.HalfReader(
bytes.NewReader([]byte("\x12\x23\x34\x45\x56\x67\x78"))),
bits: BitSequence{0x1000000000000000, 4}}
bits, _ := r.PeekBits()
c.Check(bits, Equals, BitSequence{0x1122334450000000, 36})
bits, _ = r.PeekBits()
c.Check(bits, Equals, BitSequence{0x1122334455667000, 52})
bits, _ = r.PeekBits()
c.Check(bits, Equals, BitSequence{0x1122334455667780, 60})
}
func (t *ReaderTest) TestConsumeBits(c *C) {
r := &Reader{
reader: nil,
bits: BitSequence{0x1122334455667788, 64}}
r.ConsumeBits(4)
c.Check(r.bits, Equals, BitSequence{0x1223344556677880, 60})
r.ConsumeBits(32)
c.Check(r.bits, Equals, BitSequence{0x5667788000000000, 28})
r.ConsumeBits(16)
c.Check(r.bits, Equals, BitSequence{0x7880000000000000, 12})
r.ConsumeBits(12)
c.Check(r.bits, Equals, BitSequence{0x0000000000000000, 0})
}
var _ = Suite(&ReaderTest{})