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This PR contains the following updates:
0.16.0
->0.25.0
Release Notes
avajs/ava
v0.25.0
: 0.25.0Compare Source
Another small release while we're gearing up for a 1.0 built with Babel 7. This is likely to be the last
0.
release, but we may go through a few beta releases for 1.0 whilst we wait for Babel 7 to get out of beta itself.@std/esm
in AVA's"require"
configuration and will use it to require subsequent modules72c53be
t.log()
now supports multiple arguments4f896c2
Error.stackTraceLimit
in the worker processesf00f3c4
t.snapshot(value, options)
29e5dfd
aaddc37
947f207
4a13966
bcb77fc
All changes 📚
v0.24.0...v0.25.0
Thanks 💌
💖 Huge thanks to @ppatel221, @cdaringe, @jy95, @jamestalmage, @okyantoro, @ajafff, @niftylettuce, @kugtong33, @troysandal, @willnode and @forresst for helping us with this release. We couldn’t have done it without you!
Get involved ✌️
We welcome new contributors. AVA is a friendly place to get started in open source. We have a great article on getting started contributing and a comprehensive contributing guide.
v0.24.0
: 0.24.0Compare Source
Highlights 💡
This is a pretty small release, but a great one if you're solely developing for Node.js 8.3 or above.
You can now use object rest/spread properties in test files without any further Babel configuration. Note that if you're running tests on older versions of Node.js you'll still need to add the relevant Babel plugins, since this new language feature has not yet reached stage 4.
37c9122
Miscellaneous 🕯
1cd3a04
37e8b49
t.is()
values are deeply equal but not the samec41b2af
f98a881
All changes 📚
v0.23.0...v0.24.0
Thanks 💌
💖 Huge thanks to @jedmao, @Lifeuser, @mightyiam, @ahmadawais and @codeslikejaggars for helping us with this release. We couldn’t have done it without you!
Get involved ✌️
We welcome new contributors. AVA is a friendly place to get started in open source. We have a great article on getting started contributing and a comprehensive contributing guide.
v0.23.0
: 0.23.0Compare Source
Highlights 🕴
NODE_ENV=test
✨AVA will now set
process.env.NODE_ENV
to'test'
, as long as theNODE_ENV
environment variable has not already been set.42e7c74
Improved snapshot storage location 🗃
Snapshots are stored alongside your test files. This is great when your test file is executed directly but say if you're using TypeScript to precompile your test file AVA would store the snapshots in your build directory. In this release, if source maps are available, AVA determines the original test file location and uses that to store the snapshots.
You can also specify where snapshots are stored through the
snapshotDir
option in thepackage.json
file.7fadc34
Matching anonymous tests 🕵️
--match='*'
now matches all tests, including those without a title.1df502d
Miscellaneous 🎒
1ea758f
c72f4f2
2
in CI environments3f81fc4
Bluebird.longStackTraces()
. If you're using Bluebird you may want to call this yourself using arequire
script.ebf78b3
61101d9
c9fe8db
f43d5ae
t.log()
is now supported in the Flow and TypeScript type definitions64b7755
t.title
is now supported in the TypeScript type definitions3c8b1be
t.snapshot()
now has a better Flow type definitionded7ab8
All changes 🛋
v0.22.0...v0.23.0
Thanks 💌
💖 Huge thanks to @anshulwadhawan, @mliou8, @dehbmarques, @forivall, @forresst, @Couto, @impaler, @kristianmandrup, @lukechilds, @neoeno, @jugglinmike, @P-Seebauer, @philippotto, @ptim, @rhendric, @ntwb, @tdeschryver, @timothyjellison and @zellwk for helping us with this release. We couldn’t have done it without you!
Get involved ✌️
We welcome new contributors. AVA is a friendly place to get started in open source. We have a great article on getting started contributing and a comprehensive contributing guide.
v0.22.0
: 0.22.0Compare Source
There's but a few commits in this release, but we've made a big change to how AVA manages its test workers 👩🏼🔬👨🏼🏭👨🏿🚀👨🏻⚕️👩🏽💼.
Highlights
Default concurrency
We now cap the number of concurrent workers to the number of CPU cores on your machine. Previously AVA started workers for each test file, so if you had many test files this could actually bring things to a halt.
465fcec
You can still customize the concurrency by setting the
concurrency
option in AVA'spackage.json
configuration, or by passing the--concurrency
flag. We've also beefed up input validation on that flag.b6eef5a
Unfortunately this does change how
test.only()
behaves. AVA can no longer guarantee that normal tests won't run. For now, if you want to usetest.only()
, you should run tests from just that file. We have an open issue to add an--only
flag, which will ensure that AVA runs just thetest.only()
tests. If you'd like to help us with that please head on over to #1472.t.log()
We've also added
t.log()
, which lets you print a log message contextually alongside the test result, instead of immediately printing it tostdout
likeconsole.log
.14f7095
Miscellaneous
d8c21a6
e28be05
t.notThrows()
example has been clarified57f5007
All changes
v0.21.0...v0.22.0
Thanks
💖 Huge thanks to @abouthiroppy, @ydaniv, @nowells, @melisoner2006, @clayzermk1 and @tdeschryver for helping us with this release. We couldn’t have done it without you!
Get involved
We welcome new contributors. AVA is a friendly place to get started in open source. We have a great article on getting started contributing and a comprehensive contributing guide.
v0.21.0
: 0.21.0Compare Source
This is primarily a bug fix release, but some features did sneak in:
05bfafe
3f6e134
npm
2b4e35d
This release includes the following patches:
t.deepEqual()
and magic assert diffs9e4ee3f
Buffer
APIs that are unavailable in Node.js releases older than 4.5d0fc8c9
t.throws()
promise return value to beany
4a769f8
test()
so macros are compatible with the latestflow-bin
e794e73
Thanks
💖 Huge thanks to @wprater, @HippoDippo, @roperzh, @ArtemGovorov, @dancoates, @suchmaske, @ajtorres9 and @guillaumevincent for helping us with this release. We couldn’t have done it without you!
Get involved
We welcome new contributors. AVA is a friendly place to get started in open source. We have a great article on getting started contributing and a comprehensive contributing guide.
v0.20.0
: 0.20.0Compare Source
Today’s release is very exciting. After adding magic assert and snapshot testing we found that these features sometimes disagreed with each other.
t.deepEqual()
would returnfalse
, yet AVA wouldn’t show a diff. Snapshot tests cared aboutSet
order butt.deepEqual()
didn’t. @novemberborn came to the realization that comparing and diffing object trees, and doing so over time with snapshots, are variations on the same problem. Thus he started ConcordanceJS, a new project that lets you compare, format, diff and serialize any JavaScript value. This AVA release reaps the fruits of his labor.Highlights
More magical asserts
Magic assert will now always show the difference between actual and expected values. If an unexpected error occurs it’ll print all (enumerable) properties of the error which can make it easier to debug your program.
More details of an object are printed, like the constructor name and the string tag. Buffers are hex-encoded with line breaks so they’re easy to read:
t.deepEqual()
improvementst.deepEqual()
andt.notDeepEqual()
now useconcordance
, rather thanlodash.isequal
. This changes what values AVA considers to be equal, making thet.deepEqual()
assertion more predictable. You can now trust that all aspects of your objects are compared.Object wrappers are no longer equal. The following assertion will now fail:
For
Map
andSet
objects to be equal, their elements must now be in the same order:With this release AVA will compare all enumerable properties of an object. For an array this means that the comparison considers not just the array elements. The following are no longer considered equal:
The same goes for
Map
andSet
objects, errors, and so forth:You used to be able to compare
Arguments
object to an object literal:Instead you must now use:
(Of course you can still compare
Arguments
objects to each other.)New in this release is the ability to compare React elements:
Snapshot improvements
Snapshots too now use
concordance
. This means values are compared with the snapshot according to the same rules ast.deepEqual()
, albeit with some minor differences:Argument
objects can only be compared toArgument
objectsNote that Node.js versions before 6.5 cannot infer names of all functions . AVA will pass a snapshot assertion if it determines the name information is unreliable.
AVA now saves two files when snapshotting. One, ending in the
.snap
extension, contains a compressed serialization of the expected value. The other is a readable Markdown file that contains the snapshot report. You should commit both to source control. The report file can be used to see what is in your snapshots and to compare snapshot changes over time.Try it out with our snapshot example! Or check out an example snapshot report.
The snapshot file location now follows your test layout. If you use a
test
folder, they’ll be placed intest/snapshots
. With__tests__
they’ll be placed in__tests__/__snapshots__
. And if you just have atest.js
in your project root the snapshot files will be written totest.js.snap
andtest.js.md
. You may have to manually remove old snapshot files after installing this new AVA version.ebd572a
Improved snapshot support in watch mode
In watch mode, AVA now watches for changes to snapshot files. This is handy when you revert changes while the watcher is running. Snapshot files are correctly tracked as test dependencies, so the right tests are rerun. Typing
u
, followed byEnter
updates the snapshots in the tests that just ran. (And the watcher won’t rerun tests when snapshots are updated.)87eef84
dbc78dc
f507e36
50b60a1
Node.js 8 support
AVA 0.19 already worked great with Node.js 8, and we’ve made it even better by removing unnecessary Babel transpilations in our
stage-4
preset. We’re now also forwarding the--inspect-brk
flag for debugging purposes.e456951
a868b02
New and improved recipes
We’ve added new recipes and improved others:
1d04153
140c0e0
970872c
ff3bba9
f228401
browser-env
c01ac05
Miscellaneous
--concurrency
without a value now causes AVA to exit with an error8c35a1a
t.throws()
with a resolved promise now prints a helpful error messagedfca2d9
t.title
accessor has been documented.549e99b
All changes
v0.19.1...v0.20.0
Thanks
💖 Huge thanks to @lukechilds, @alexrussell, @zs-zs, @cncolder, @JPeer264, @CImrie, @blake-newman, @yatharthk, @bfred-it, @tdeschryver, @sudo-suhas, @dohomi, @efegurkan and @forresst for helping us with this release. We couldn’t have done it without you!
Get involved
We welcome new contributors. AVA is a friendly place to get started in open source. We have a great article on getting started contributing and a comprehensive contributing guide.
v0.19.1
: 0.19.1Compare Source
A bugfix release. See
0.19.0
for full release notes.MaxListenersExceededWarning
from being emitted if a test file contains more than 10 testsd27bc8f
t.end()
not being available in the TypeScript definition for callback testsbd81ef4
t.context
not being available in the Flow definition forbeforeEach()
andafterEach()
hooksd169f0e
v0.19.0
: 0.19.0Compare Source
Since our last minor release, @novemberborn has worked tirelessly on refactoring big parts of the codebase to be more correct and readable, while squashing many bugs. We've also added multiple detections that will prevent user mistakes.
Highlights
Working snapshots
We released snapshot support with
v0.18.0
, but unfortunately it didn’t work. That’s fixed now. Since we’re usingjest-snapshot
the output will look a little different from AVA’s other assertions. Most notably the output will not be colored.57fd051
Tests fail if no assertions are run (BREAKING)
Sometimes you write a test that accidentally passes, because your assertion was never run. For example, the following test passes if
getAnimals()
returns an empty array:AVA now fails your test if no assertions were run. This can be a problem if you use third-party assertion libraries, since AVA cannot detect when those assertions pass. You can disable this behavior by setting the
failWithoutAssertions
option tofalse
in AVA'spackage.json
configuration.3a4553c
Improved
t.throws()
andt.notThrows()
assertions (BREAKING)Various improvements have been made to these assertions. Unfortunately this does include some breaking changes.
Calling these assertions with an observable or promise makes them asynchronous. You now need to
await
them:Previously, these would return a promise that was rejected if the assertion failed. This leaked AVA’s internal assertion error. Now they’ll fulfill their returned promise with
undefined
instead (d56db75
). You typically won’t notice this in your test.We’ve improved how we detect when
t.throws()
andt.notThrows()
are used incorrectly (d924045
). This might be when, rather than passing a function, you call it:You can now use
await
andyield
in the argument expressions (e.g.t.throws(await createThrowingFunction())
. The instructions on how to use these assertions correctly are now shown with the test failure, instead of being written to the console as your tests run.Incorrectly using these assertions now always causes your test to fail.
Stack traces are now correct, even if used asynchronously (
f6a42ba
). The error messages have been improved for whent.throws()
fails to encounter an error, or ift.notThrows()
does (4463f38
). Ift.notThrows()
fails, the encountered error is shown (22c93ed
).Improved magic assert output
Actual and/or expected values are now included in the magic assert output, with helpful labels that are relevant to the failing assertion.
4f87f32
Detect hanging tests
AVA can now detect when an asynchronous test is hanging (
880e87e
).Note that this may not work if your code is listening on a socket or is using a timer or interval.
Better Babel option resolution
We’re now resolving Babel options ahead of time, using
hullabaloo-config-manager
. This fixes long-standing issues with relative paths in AVA’s"babel"
options inpackage.json
files (#707). It also means we’re better at recompiling test and helper files if your Babel config changes or you update plugins or presets.0464b14
Miscellaneous
a49f66b
50ad213
9f2ff09
bd5ed60
b581983
157ef25
3279336
0510d80
t.regex()
andt.notRegex()
are now validated.f062981
All changes
v0.18.2…v0.19.0
Thanks
💖 Huge thanks to @Wp1987, @lukechilds, @jakwuh, @danny-andrews, @mmkal, @yatharthk, @klauscfhq, @screendriver, @jhnns, @danez and @florianb for helping us with this release. We couldn’t have done it without you!
Get involved
We welcome new contributors. AVA is a friendly place to get started in open source. We have a great article on getting started contributing and a comprehensive contributing guide.
v0.18.2
: 0.18.2Compare Source
Many bug fixes for snapshot testing, magic assert, and the type definitions: avajs/ava@v0.18.1...v0.18.2
v0.18.1
: 0.18.1Compare Source
Quick bug fix: Remove
t.is
andt.not
from enhanced assertion patterns to provide correct output on assertion failure.v0.18.0
: 0.18.0Compare Source
This release is one of the biggest, most feature-packed release we’ve had in a long time. We have prepared lots of tasty things for you - snapshot testing, magic assert, precompiling test helpers, improvements to Babel transpilation, and more. Our team and contributors have been working hard to deliver all this goodness. We can’t wait to hear your feedback and don’t hesitate to suggest new ideas and report bugs!
Highlights
Dropped support for Node.js 0.10 and 0.12
As mentioned in the 0.17.0 release notes, we’re dropping support for Node.js 0.10 and 0.12 in this release. They’re both out of maintenance mode. Time to upgrade!
Magic assert
We completely overhauled the error output to make it as easy and fast as possible to detect the source of the failure. Magic assert, as we call it internally, adds code excerpts and clean diffs for actual and expected values. If values in the assertion are objects or arrays, only a difference is displayed to remove the noise and focus on the problem. Oh, and the diff is syntax-highlighted too! If you are comparing strings, both single and multi line, AVA displays a different kind of output, highlighting the added or missing characters. Last but not least, you don’t have to update any of your tests to take advantage of this! Third-party assertion libraries, like expect, chai and others, are supported out-of-the-box as well.
avajs/ava@c9e6e6f
Snapshot testing
We now have snapshot testing, thanks to @lithin ✨
Snapshot testing simply saves a stringified state of some data structure and compares it on the next run. It was popularized with React component testing, but you can use it with anything that can be stringified. For example, ensuring API responses stay the same.
avajs/ava@ee65b6d
Precompile helper files
Previously, AVA transpiled your test files, but not your test helpers. Now we transpile helper files too! Helpers are files starting with
_
or any files in ahelpers
directory inside the test directory. These are usually used for utilities and shared logic between test files.avajs/ava@410cb8d
Improving language support
We’ve come up with a specification for how AVA handles Babel projects and may better support other languages like TypeScript. Customizing transpilation of test and helper files will be easier, and AVA will start transpiling source files too. We’ve started work on this, but there are no user-facing changes yet.
avajs/ava@076eb81
Miscellaneous
t.ok
,t.notOk
,t.same
,t.notSame
). If you haven’t migrated yet, you can do so automagically with our codemod. avajs/ava@c010fd7--source
flag. Use the package.json config instead. avajs/ava@34bebc4babel-runtime
. Built-ins likeMap
andPromise
are no longer replaced with polyfills. avajs/ava@ad5122dtest.only()
is used, so you don’t mistakenly think you’re running all the tests. avajs/ava@22a6081--fail-fast
is enabled, so you’re aware AVA didn’t run all your tests. avajs/ava@09d23f5--watch
is used in CI, as otherwise the process would never exit, since watch mode is persistent. avajs/ava@0606ff7All changes
Thanks
💖 Huge thanks to @lithin, @ThomasBem, @leebyron, @rnkdev, @sebald, @gconaty, @jarlehansen, @LasaleFamine, @asafigan, for helping us with this release. We couldn’t have done it without you!
Get involved
We welcome new contributors. AVA is a friendly place to get started in open source. We have a great article on getting started contributing and a comprehensive contributing guide.
v0.17.0
: 0.17.0Compare Source
The current working directory in test files changed (BREAKING)
We made the hard decision of changing the current working directory (
process.cwd()
) in test files to be the same directory aspackage.json
. It was previously the same as__dirname
(the directory of the test file). Havingprocess.cwd()
equal__dirname
felt like a good idea at the time, but as the popularity of AVA grew, people started hitting issues with it.This affects users that have test files in a sub-folder and are using relative paths. If you have your test files in the same directory as
package.json
, you're fine.The fix is to wrap all relative paths in
path.join(__dirname, 'relative-path')
to make them absolute.Here's an example of what needs changing. The below file and
unicorn.txt
are both in./test/
.Let us know if anything is unclear or if you're having problems.
Commit: avajs/ava@476c653
Node.js version support
The next minor version of AVA, 0.18.0, will drop support for Node.js v0.10 and v0.12. We'll continue fixing critical issues for this version until the end of the year. Time to upgrade if you haven't. (Discussion: https://github.com/avajs/ava/issues/1051)
Highlights
--require
CLI flag. Configure it in package.json instead. avajs/ava@17119bclodash.isEqual
for deep equality checking (t.deepEqual()
&t.notDeepEqual()
). This might make your test fail if our previous deep equality check was too loose. avajs/ava@8856684power-assert
. avajs/ava@24a38act.doesNotThrow()
as it was renamed tot.notThrows()
. It was deprecated far back in AVA 0.12.0. avajs/ava@e448798t.error()
alias fort.ifError()
. It will be removed in AVA 1.0.0. Just uset.ifError()
. avajs/ava@28bb0d5 (We have an automatic migration script if you're usingt.error()
)All Changes
Configuration
📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).
🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.
♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
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