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node/test/parallel/test-assert-async.js at main · fetchapi/node · GitHub
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test-assert-async.js
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'use strict'
;
const
common
=
require
(
'../common'
)
;
const
assert
=
require
(
'assert'
)
;
// Run all tests in parallel and check their outcome at the end.
const
promises
=
[
]
;
// Thenable object without `catch` method,
// shouldn't be considered as a valid Thenable
const
invalidThenable
=
{
then
:
(
fulfill
,
reject
)
=>
{
fulfill
(
)
;
}
,
}
;
// Function that returns a Thenable function,
// a function with `catch` and `then` methods attached,
// shouldn't be considered as a valid Thenable.
const
invalidThenableFunc
=
(
)
=>
{
function
f
(
)
{
}
f
.
then
=
(
fulfill
,
reject
)
=>
{
fulfill
(
)
;
}
;
f
.
catch
=
(
)
=>
{
}
;
return
f
;
}
;
// Test assert.rejects() and assert.doesNotReject() by checking their
// expected output and by verifying that they do not work sync
// Check `assert.rejects`.
{
const
rejectingFn
=
async
(
)
=>
assert
.
fail
(
)
;
const
errObj
=
{
code
:
'ERR_ASSERTION'
,
name
:
'AssertionError'
,
message
:
'Failed'
}
;
// `assert.rejects` accepts a function or a promise
// or a thenable as first argument.
promises
.
push
(
assert
.
rejects
(
rejectingFn
,
errObj
)
)
;
promises
.
push
(
assert
.
rejects
(
rejectingFn
(
)
,
errObj
)
)
;
const
validRejectingThenable
=
{
then
:
(
fulfill
,
reject
)
=>
{
reject
(
{
code
:
'FAIL'
}
)
;
}
,
catch
:
(
)
=>
{
}
}
;
promises
.
push
(
assert
.
rejects
(
validRejectingThenable
,
{
code
:
'FAIL'
}
)
)
;
// `assert.rejects` should not accept thenables that
// use a function as `obj` and that have no `catch` handler.
promises
.
push
(
assert
.
rejects
(
assert
.
rejects
(
invalidThenable
,
{
}
)
,
{
code
:
'ERR_INVALID_ARG_TYPE'
}
)
)
;
promises
.
push
(
assert
.
rejects
(
assert
.
rejects
(
invalidThenableFunc
,
{
}
)
,
{
code
:
'ERR_INVALID_RETURN_VALUE'
}
)
)
;
const
err
=
new
Error
(
'foobar'
)
;
const
validate
=
(
)
=>
{
return
'baz'
;
}
;
promises
.
push
(
assert
.
rejects
(
(
)
=>
assert
.
rejects
(
Promise
.
reject
(
err
)
,
validate
)
,
{
message
:
'The "validate" validation function is expected to '
+
"return \"true\". Received 'baz'\n\nCaught error:\n\n"
+
'Error: foobar'
,
code
:
'ERR_ASSERTION'
,
actual
:
err
,
expected
:
validate
,
name
:
'AssertionError'
,
operator
:
'rejects'
,
}
)
)
;
}
{
const
handler
=
(
err
)
=>
{
assert
(
err
instanceof
assert
.
AssertionError
,
`
${
err
.
name
}
is not instance of AssertionError`
)
;
assert
.
strictEqual
(
err
.
code
,
'ERR_ASSERTION'
)
;
assert
.
strictEqual
(
err
.
message
,
'Missing expected rejection (mustNotCall).'
)
;
assert
.
strictEqual
(
err
.
operator
,
'rejects'
)
;
assert
.
ok
(
!
err
.
stack
.
includes
(
'at Function.rejects'
)
)
;
return
true
;
}
;
let
promise
=
assert
.
rejects
(
async
(
)
=>
{
}
,
common
.
mustNotCall
(
)
)
;
promises
.
push
(
assert
.
rejects
(
promise
,
common
.
mustCall
(
handler
)
)
)
;
promise
=
assert
.
rejects
(
(
)
=>
{
}
,
common
.
mustNotCall
(
)
)
;
promises
.
push
(
assert
.
rejects
(
promise
,
{
name
:
'TypeError'
,
code
:
'ERR_INVALID_RETURN_VALUE'
,
// FIXME(JakobJingleheimer): This should match on key words, like /Promise/ and /undefined/.
message
:
'Expected instance of Promise to be returned '
+
'from the "promiseFn" function but got undefined.'
}
)
)
;
promise
=
assert
.
rejects
(
Promise
.
resolve
(
)
,
common
.
mustNotCall
(
)
)
;
promises
.
push
(
assert
.
rejects
(
promise
,
common
.
mustCall
(
handler
)
)
)
;
}
{
const
THROWN_ERROR
=
new
Error
(
)
;
promises
.
push
(
assert
.
rejects
(
(
)
=>
{
throw
THROWN_ERROR
;
}
,
{
}
)
.
catch
(
common
.
mustCall
(
(
err
)
=>
{
assert
.
strictEqual
(
err
,
THROWN_ERROR
)
;
}
)
)
)
;
}
promises
.
push
(
assert
.
rejects
(
assert
.
rejects
(
'fail'
,
{
}
)
,
{
code
:
'ERR_INVALID_ARG_TYPE'
,
message
:
'The "promiseFn" argument must be of type function or an '
+
"instance of Promise. Received type string ('fail')"
}
)
)
;
{
const
handler
=
(
generated
,
actual
,
err
)
=>
{
assert
.
strictEqual
(
err
.
generatedMessage
,
generated
)
;
assert
.
strictEqual
(
err
.
code
,
'ERR_ASSERTION'
)
;
assert
.
strictEqual
(
err
.
actual
,
actual
)
;
assert
.
strictEqual
(
err
.
operator
,
'rejects'
)
;
assert
.
match
(
err
.
stack
,
/
r
e
j
e
c
t
s
/
)
;
return
true
;
}
;
const
err
=
new
Error
(
)
;
promises
.
push
(
assert
.
rejects
(
assert
.
rejects
(
Promise
.
reject
(
null
)
,
{
code
:
'FOO'
}
)
,
handler
.
bind
(
null
,
true
,
null
)
)
)
;
promises
.
push
(
assert
.
rejects
(
assert
.
rejects
(
Promise
.
reject
(
5
)
,
{
code
:
'FOO'
}
,
'AAAAA'
)
,
handler
.
bind
(
null
,
false
,
5
)
)
)
;
promises
.
push
(
assert
.
rejects
(
assert
.
rejects
(
Promise
.
reject
(
err
)
,
{
code
:
'FOO'
}
,
'AAAAA'
)
,
handler
.
bind
(
null
,
false
,
err
)
)
)
;
}
// Check `assert.doesNotReject`.
{
// `assert.doesNotReject` accepts a function or a promise
// or a thenable as first argument.
/* eslint-disable no-restricted-syntax */
let
promise
=
assert
.
doesNotReject
(
(
)
=>
new
Map
(
)
,
common
.
mustNotCall
(
)
)
;
promises
.
push
(
assert
.
rejects
(
promise
,
{
message
:
'Expected instance of Promise to be returned '
+
'from the "promiseFn" function but got an instance of Map.'
,
code
:
'ERR_INVALID_RETURN_VALUE'
,
name
:
'TypeError'
}
)
)
;
promises
.
push
(
assert
.
doesNotReject
(
async
(
)
=>
{
}
)
)
;
promises
.
push
(
assert
.
doesNotReject
(
Promise
.
resolve
(
)
)
)
;
// `assert.doesNotReject` should not accept thenables that
// use a function as `obj` and that have no `catch` handler.
const
validFulfillingThenable
=
{
then
:
(
fulfill
,
reject
)
=>
{
fulfill
(
)
;
}
,
catch
:
(
)
=>
{
}
}
;
promises
.
push
(
assert
.
doesNotReject
(
validFulfillingThenable
)
)
;
promises
.
push
(
assert
.
rejects
(
assert
.
doesNotReject
(
invalidThenable
)
,
{
code
:
'ERR_INVALID_ARG_TYPE'
}
)
)
;
promises
.
push
(
assert
.
rejects
(
assert
.
doesNotReject
(
invalidThenableFunc
)
,
{
code
:
'ERR_INVALID_RETURN_VALUE'
}
)
)
;
const
handler1
=
(
err
)
=>
{
assert
(
err
instanceof
assert
.
AssertionError
,
`
${
err
.
name
}
is not instance of AssertionError`
)
;
assert
.
strictEqual
(
err
.
code
,
'ERR_ASSERTION'
)
;
assert
.
strictEqual
(
err
.
message
,
'Failed'
)
;
return
true
;
}
;
const
handler2
=
(
err
)
=>
{
assert
(
err
instanceof
assert
.
AssertionError
,
`
${
err
.
name
}
is not instance of AssertionError`
)
;
assert
.
strictEqual
(
err
.
code
,
'ERR_ASSERTION'
)
;
assert
.
strictEqual
(
err
.
message
,
'Got unwanted rejection.\nActual message: "Failed"'
)
;
assert
.
strictEqual
(
err
.
operator
,
'doesNotReject'
)
;
assert
.
ok
(
err
.
stack
)
;
assert
.
ok
(
!
err
.
stack
.
includes
(
'at Function.doesNotReject'
)
)
;
return
true
;
}
;
const
rejectingFn
=
async
(
)
=>
assert
.
fail
(
)
;
promise
=
assert
.
doesNotReject
(
rejectingFn
,
common
.
mustCall
(
handler1
)
)
;
promises
.
push
(
assert
.
rejects
(
promise
,
common
.
mustCall
(
handler2
)
)
)
;
promise
=
assert
.
doesNotReject
(
rejectingFn
(
)
,
common
.
mustCall
(
handler1
)
)
;
promises
.
push
(
assert
.
rejects
(
promise
,
common
.
mustCall
(
handler2
)
)
)
;
promise
=
assert
.
doesNotReject
(
(
)
=>
assert
.
fail
(
)
,
common
.
mustNotCall
(
)
)
;
promises
.
push
(
assert
.
rejects
(
promise
,
common
.
mustCall
(
handler1
)
)
)
;
promises
.
push
(
assert
.
rejects
(
assert
.
doesNotReject
(
123
)
,
{
code
:
'ERR_INVALID_ARG_TYPE'
,
message
:
'The "promiseFn" argument must be of type '
+
'function or an instance of Promise. Received type number (123)'
}
)
)
;
/* eslint-enable no-restricted-syntax */
}
// Make sure all async code gets properly executed.
Promise
.
all
(
promises
)
.
then
(
common
.
mustCall
(
)
)
;
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