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体验新版 GitCode,发现更多精彩内容 >>
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8b64e041
编写于
6月 16, 2015
作者:
P
Péter Szilágyi
浏览文件
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电子邮件补丁
差异文件
eth/fetcher: add test to check for duplicate downloads
上级
2a1b722d
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
38 addition
and
0 deletion
+38
-0
eth/fetcher/fetcher_test.go
eth/fetcher/fetcher_test.go
+38
-0
未找到文件。
eth/fetcher/fetcher_test.go
浏览文件 @
8b64e041
...
...
@@ -200,3 +200,41 @@ func TestOverlappingAnnouncements(t *testing.T) {
t
.
Fatalf
(
"synchronised block mismatch: have %v, want %v"
,
imported
,
targetBlocks
+
1
)
}
}
// Tests that announces already being retrieved will not be duplicated.
func
TestPendingDeduplication
(
t
*
testing
.
T
)
{
// Create a hash and corresponding block
hashes
:=
createHashes
(
1
,
knownHash
)
blocks
:=
createBlocksFromHashes
(
hashes
)
// Assemble a tester with a built in counter and delayed fetcher
tester
:=
newTester
()
fetcher
:=
tester
.
makeFetcher
(
blocks
)
delay
:=
50
*
time
.
Millisecond
counter
:=
uint32
(
0
)
wrapper
:=
func
(
hashes
[]
common
.
Hash
)
error
{
atomic
.
AddUint32
(
&
counter
,
uint32
(
len
(
hashes
)))
// Simulate a long running fetch
go
func
()
{
time
.
Sleep
(
delay
)
fetcher
(
hashes
)
}()
return
nil
}
// Announce the same block many times until it's fetched (wait for any pending ops)
for
!
tester
.
hasBlock
(
hashes
[
0
])
{
tester
.
fetcher
.
Notify
(
"repeater"
,
hashes
[
0
],
time
.
Now
()
.
Add
(
-
arriveTimeout
),
wrapper
)
time
.
Sleep
(
time
.
Millisecond
)
}
time
.
Sleep
(
delay
)
// Check that all blocks were imported and none fetched twice
if
imported
:=
len
(
tester
.
ownBlocks
);
imported
!=
2
{
t
.
Fatalf
(
"synchronised block mismatch: have %v, want %v"
,
imported
,
2
)
}
if
int
(
counter
)
!=
1
{
t
.
Fatalf
(
"retrieval count mismatch: have %v, want %v"
,
counter
,
1
)
}
}
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