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node/test/common/debugger.js at main · fetchapi/node · GitHub
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debugger.js
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'use strict'
;
const
common
=
require
(
'../common'
)
;
const
spawn
=
require
(
'child_process'
)
.
spawn
;
const
BREAK_MESSAGE
=
new
RegExp
(
'(?:'
+
[
'assert'
,
'break'
,
'break on start'
,
'debugCommand'
,
'exception'
,
'other'
,
'promiseRejection'
,
'step'
,
]
.
join
(
'|'
)
+
') in'
,
'i'
)
;
let
TIMEOUT
=
common
.
platformTimeout
(
5000
)
;
if
(
common
.
isWindows
)
{
// Some of the windows machines in the CI need more time to receive
// the outputs from the client.
// https://github.com/nodejs/build/issues/3014
TIMEOUT
=
common
.
platformTimeout
(
15000
)
;
}
function
isPreBreak
(
output
)
{
return
/
B
r
e
a
k
o
n
s
t
a
r
t
/
.
test
(
output
)
&&
/
1
\(
f
u
n
c
t
i
o
n
\(
e
x
p
o
r
t
s
/
.
test
(
output
)
;
}
function
startCLI
(
args
,
flags
=
[
]
,
spawnOpts
=
{
}
)
{
let
stderrOutput
=
''
;
const
child
=
spawn
(
process
.
execPath
,
[
...
flags
,
'inspect'
,
...
args
]
,
spawnOpts
)
;
const
outputBuffer
=
[
]
;
function
bufferOutput
(
chunk
)
{
if
(
this
===
child
.
stderr
)
{
stderrOutput
+=
chunk
;
}
outputBuffer
.
push
(
chunk
)
;
}
function
getOutput
(
)
{
return
outputBuffer
.
join
(
'\n'
)
.
replaceAll
(
'\b'
,
''
)
;
}
child
.
stdout
.
setEncoding
(
'utf8'
)
;
child
.
stdout
.
on
(
'data'
,
bufferOutput
)
;
child
.
stderr
.
setEncoding
(
'utf8'
)
;
child
.
stderr
.
on
(
'data'
,
bufferOutput
)
;
if
(
process
.
env
.
VERBOSE
===
'1'
)
{
child
.
stdout
.
pipe
(
process
.
stdout
)
;
child
.
stderr
.
pipe
(
process
.
stderr
)
;
}
return
{
flushOutput
(
)
{
const
output
=
this
.
output
;
outputBuffer
.
length
=
0
;
return
output
;
}
,
waitFor
(
pattern
)
{
function
checkPattern
(
str
)
{
if
(
Array
.
isArray
(
pattern
)
)
{
return
pattern
.
every
(
(
p
)
=>
p
.
test
(
str
)
)
;
}
return
pattern
.
test
(
str
)
;
}
return
new
Promise
(
(
resolve
,
reject
)
=>
{
function
checkOutput
(
)
{
if
(
checkPattern
(
getOutput
(
)
)
)
{
tearDown
(
)
;
resolve
(
)
;
}
}
function
onChildClose
(
code
,
signal
)
{
tearDown
(
)
;
let
message
=
'Child exited'
;
if
(
code
)
{
message
+=
`, code
${
code
}
`
;
}
if
(
signal
)
{
message
+=
`, signal
${
signal
}
`
;
}
message
+=
` while waiting for
${
pattern
}
; found:
${
this
.
output
}
`
;
if
(
stderrOutput
)
{
message
+=
`\n STDERR:
${
stderrOutput
}
`
;
}
reject
(
new
Error
(
message
)
)
;
}
const
timer
=
setTimeout
(
(
)
=>
{
tearDown
(
)
;
reject
(
new
Error
(
[
`Timeout (
${
TIMEOUT
}
) while waiting for
${
pattern
}
`
,
`found:
${
this
.
output
}
`
,
]
.
join
(
'; '
)
)
)
;
}
,
TIMEOUT
)
;
function
tearDown
(
)
{
clearTimeout
(
timer
)
;
child
.
stdout
.
removeListener
(
'data'
,
checkOutput
)
;
child
.
removeListener
(
'close'
,
onChildClose
)
;
}
child
.
on
(
'close'
,
onChildClose
)
;
child
.
stdout
.
on
(
'data'
,
checkOutput
)
;
checkOutput
(
)
;
}
)
;
}
,
waitForPrompt
(
)
{
return
this
.
waitFor
(
/
>
\s
+
$
/
)
;
}
,
async
waitForInitialBreak
(
)
{
await
this
.
waitFor
(
/
b
r
e
a
k
(?:
o
n
s
t
a
r
t
)
?
i
n
/
i
)
;
if
(
isPreBreak
(
this
.
output
)
)
{
await
this
.
command
(
'next'
,
false
)
;
return
this
.
waitFor
(
/
b
r
e
a
k
i
n
/
)
;
}
}
,
get
breakInfo
(
)
{
const
output
=
this
.
output
;
const
breakMatch
=
output
.
match
(
/
(
s
t
e
p
|
b
r
e
a
k
(?:
o
n
s
t
a
r
t
)
?
)
i
n
(
[
^
\n
]
+
)
:
(
\d
+
)
\n
/
i
)
;
if
(
breakMatch
===
null
)
{
throw
new
Error
(
`Could not find breakpoint info in
${
JSON
.
stringify
(
output
)
}
`
)
;
}
return
{
filename
:
breakMatch
[
2
]
,
line
:
+
breakMatch
[
3
]
}
;
}
,
ctrlC
(
)
{
return
this
.
command
(
'.interrupt'
)
;
}
,
get
output
(
)
{
return
getOutput
(
)
;
}
,
get
rawOutput
(
)
{
return
outputBuffer
.
join
(
''
)
.
toString
(
)
;
}
,
parseSourceLines
(
)
{
return
getOutput
(
)
.
split
(
'\n'
)
.
map
(
(
line
)
=>
line
.
match
(
/
(?:
\*
|
>
)
?
\s
*
(
\d
+
)
/
)
)
.
filter
(
(
match
)
=>
match
!==
null
)
.
map
(
(
match
)
=>
+
match
[
1
]
)
;
}
,
writeLine
(
input
,
flush
=
true
)
{
if
(
flush
)
{
this
.
flushOutput
(
)
;
}
if
(
process
.
env
.
VERBOSE
===
'1'
)
{
process
.
stderr
.
write
(
`<
${
input
}
\n`
)
;
}
child
.
stdin
.
write
(
input
)
;
child
.
stdin
.
write
(
'\n'
)
;
}
,
command
(
input
,
flush
=
true
)
{
this
.
writeLine
(
input
,
flush
)
;
return
this
.
waitForPrompt
(
)
;
}
,
stepCommand
(
input
)
{
this
.
writeLine
(
input
,
true
)
;
return
this
.
waitFor
(
BREAK_MESSAGE
)
.
then
(
(
)
=>
this
.
waitForPrompt
(
)
)
;
}
,
quit
(
)
{
return
new
Promise
(
(
resolve
)
=>
{
child
.
stdin
.
end
(
)
;
child
.
on
(
'close'
,
resolve
)
;
}
)
;
}
,
}
;
}
module
.
exports
=
startCLI
;
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