Let's say you have module hello.js like so:
// hello.js
const hello_world = i18n.t('Hello world');
exports.get_greeting = () => hello_world;
And then two modules like this:
// apple.js
const hello = require('hello');
exports.foo = () => {
show_greeting(hello.get_greeting());
};
// banana.js
const hello = require('hello');
exports.foo = () => {
display_greeting(hello.get_greeting());
};
The test for apple.js could look like this,
and it won't crash due to the stub:
set_global('i18n', {t: () => {}});
zrequire('hello');
zrequire('apple');
Now let's say your write this broken version
of a test for banana.js:
zrequire('hello');
zrequire('banana');
If you run `./tools/test-js-with-node`, the
"banana" test will pass, because while it
does require "hello", it won't actually
*execute* the code that happens at require
time for "hello", because it's already in
the cache. Here is the code that gets
skipped:
const hello_world = i18n.t('Hello world');
But then if you try to run the banana test
individually, the above line of code will
cause the test to crash. And it will crash
even before you actually try to test the
meaningful code here:
exports.foo = () => {
display_greeting(hello.get_greeting());
};
This commit fixes this leak scenario by just
aggressively clearing out things from the
require cache.
This slows tests down by about 10%, which I think
is worth the extra safety here.
This is not always a behavior-preserving translation: _.extend mutates
its first argument. However, the code does not always appear to have
been written to expect that.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
ES6 and TS modules don’t insert themselves into `window`, so our tests
shouldn’t insert them either. Since the test `window` behaves like
`global` now, we can rely on legacy modules that do insert themselves
to do it themselves.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
This commit was originally automatically generated using `tools/lint
--only=eslint --fix`. It was then modified by tabbott to contain only
changes to a set of files that are unlikely to result in significant
merge conflicts with any open pull request, excluding about 20 files.
His plan is to merge the remaining changes with more precise care,
potentially involving merging parts of conflicting pull requests
before running the `eslint --fix` operation.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
With webpack, variables declared in each file are already file-local
(Global variables need to be explicitly exported), so these IIFEs are
no longer needed.
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
This adds the general machinery required, and sets it up for the file
`typing_status.js` as a first use case.
Co-authored-by: Anders Kaseorg <anders@zulipchat.com>
Adds a electron_bridge event that takes in message id and reply recived from
the notification reply and sends a message. We do this in webapp so desktop
doesn't have to depend on narrow and channel modules.
We also modify zjunit to reset window.electron_bridge after every run
to avoid leaking it.
The minimal syntactic sugar it might provide isn’t worth the
unexpected side effects (including side effects on third party
modules).
For now, we allow zrequire to emulate the previous syntax in the Node
test suite, even though stealing part of the NPM namespace is
confusing.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
We are phasing out the following in tests:
add_dependencies - this is just kind of a clunky UI
require - normal JS requires cause test leaks
In order to plug require leaks, we are effectively doing what
we always have done inside of add_dependencies, which is to
keep track of which modules we have done `require` on, and
these get cleared between tests.
Now we just use `zrequire` every time we want to pull in real
code to our global namespace.
The node tests have purged modules from cache that were
included via things like set_global(), but calling require
directly would leak modules into the next test, which made
a couple tests only work when you ran the whole suite. I
fixed those tests to work standalone. And then I now make
dependencies explicitly clear the require cache before we
require them in namespace.js.
The with_overrides() function no longer works at the module
level, so you can temporarily override one function in a module
without breaking more permanent monkey patches.
This makes us slightly more vulnerable to unintentional test
leakages, but it solves the problem where you often need lots
of temporary overrides for writer functions but you want to
keep a more permanent override for some sort of reader function.
The function with_overrides() uses the logic from the old
run() function in dispatch.js to allow you to call a test
function and override parts of the global namespace only
for the duration of when test_function runs.
- Remove `underscore.js` from `static/third` and fetch it from `npm`.
- Upgrade `underscore.js` to 1.8.3.
- Bump up the `PROVISION_VERSION` to 4.2.
Part of #1709
We now sort lists of users ids deterministically, and we also
sort list of emails deterministically and without regard to case.
This probably fixes the bug #2343, although I never got a great
repro on that.
Some node tests used to pass as long as prior tests ran,
but then they would fail if you ran them standalone. Now
we are more aggressive about cleaning up node's require
cache after each individual test runs.
Steve Howell
Anders Kaseorg
Greg Price
Priyank Patel
Thomas Ip
Shubham Dhama
Steve Howell
Rafid Aslam
Tim Abbott
Sahil Dua