When we were preparing the conversion to ES modules in 2019, the
primary obstacle was that the Node tests extensively relied on the
ability to reach into modules and mutate their CommonJS exports in
order to mock things. ES module bindings are not mutable, so in
commit 173c9cee42 we added
babel-plugin-rewire-ts as a kludgy transpilation-based workaround for
this to unblock the conversion.
However, babel-plugin-rewire-ts is slow, buggy, nonstandard,
confusing, and unmaintained. It’s incompatible with running our ES
modules as native ES modules, and prevents us from taking advantage of
modern tools for ES modules. So we want to excise all use of
__Rewire__ (and the disallow_rewire, override_rewire helper functions
that rely on it) from the tests and remove babel-plugin-rewire-ts.
Commits 64abdc199e and
e17ba5260a (#20730) prepared for this by
letting us see where __Rewire__ is being used. Now we go through and
remove most of the uses that are easy to remove without modifying the
production code at all.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Use fully resolvable request paths because we need to be able to refer
to third party modules, and to increase uniformity and explicitness.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
For most functions that we were using __Rewire__ for,
it's better to just use the override helper, which
use __Rewire__ under the hood, but also resets
the reference at the end of run_tests.
Another nice thing about override() is that it reports
when you never actually needed the mock, and this
commit fixes the instances found here.
I didn't replace every call to __Rewire__. The
remaining ones fall under these categories:
* I looked for ") =>" in my code sweep,
so I missed stuff like "noop" helpers.
* Sometimes we directly update something
in a module that's not a function. This
is generally evil, and we should use setters.
* Some tests have setup() helpers or similar
that complicated this code sweep, so I
simply punted.
* Somes modules rely on intra-test leaks. We
should fix those, but I just punted for the
main code sweep.
This is a deceptively ugly diff. It makes
the actual code way more tidy.
I basically inlined some calls to mock_module
and put some statements in lexical order.
We now just use a module._load hook to inject
stubs into our code.
For conversion purposes I temporarily maintain
the API of rewiremock, apart from the enable/disable
pieces, but I will make a better wrapper in an
upcoming commit.
We can detect when rewiremock is called after
zrequire now, and I fix all the violations in
this commit, mostly by using override.
We can also detect when a mock is needlessly
created, and I fix all the violations in this
commit.
The one minor nuisance that this commit introduces
is that you can only stub out modules in the Zulip
source tree, which is now static/js. This should
not really be a problem--there are usually better
techniques to deal with third party depenencies.
In the prior commit I show a typical workaround,
which is to create a one-line wrapper in your
test code. It's often the case that you can simply
use override(), as well.
In passing I kill off `reset_modules`, and I
eliminated the second argument to zrequire,
which dates back to pre-es6 days.
We still need to write to these globals with set_global because the
code being tested reads from them, but the tests themselves should
never need to read from them.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
While working on shifting toward native browser time zone APIs
(#16451), it was found that all but very recent Chrome and Node
versions reject certain legacy timezone aliases like US/Pacific
(https://crbug.com/364374).
For now, we only canonicalize the timezone property returned in user
objects and not the timezone setting itself.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
ES and TypeScript modules are strict by default and don’t need this
directive. ESLint will remind us to add it to new CommonJS files and
remove it from ES and TypeScript modules.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Prettier would do this anyway, but it’s separated out for a more
reviewable diff. Generated by ESLint.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
We change the user facing interface to allow specifying expected
number of error messages (default=1). Now an average test can look
like:
```
// We expect 3 error messages;
blueslip.expect('error', 'an error message', 3);
throwError();
throwError();
throwError();
blueslip.reset();
```
This mostly moves logic into people.js.
The people functions added here are glorified
two-liners.
One thing that changes here is that we
are a bit more rigorous about duplicate
names.
The code is slightly awkward, because this
commit preserves the strange behavior
that if 'alice|42' doesn't match on
the user with the name "alice" and user_id
"42", we instead look for a user whose
name is "alice|42". That seems like a
misfeature to me, but there's a test for
it, so I want to check with Tim that it's not
intentional behavior before I simplify
the code.
We now require all of our unit tests to handle
blueslip errors for warn/error/fatal. This
simplifies the zblueslip code to not have any
options passed in.
Most of the places changed here fell into two
categories:
- We were just missing a random piece of
setup data in a happy path test.
- We were testing error handling in just
a lazy way to ensure 100% coverage. Often
these error codepaths were fairly
contrived.
The one place where we especially lazy was
the stream_data tests, and those are now
more thorough.
This should be slightly more performant, and we
often call this function N times, such as when
rendering the buddy list.
There's a minor change to pm_list to avoid
an unnecessary computation on huddles that would
otherwise trigger a blueslip warning for the
huddles case.
When we are pulling data from message.display_recipient
for private messages, the user_id field is always
called 'id', not 'user_id', so we can simplify
some defensive code.
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>
We want to avoid `blueslip.error` in cases where
the root cause could just be bad data that is
human-entered.
There are a few callers here who **should** be
sending good data all the time, but hopefully
they either have good test coverage, other
obvious failure symptoms, or, ideally, just
do what the user would mostly expect in the
face of bad data.
This is part of work to break some of our
nastier circular dependencies in preparation
for our es6 migration.
This commit should facilitate loading leaf-like
modules such as people.js before all of the things
that reload.js depends on.
This was supposed to be suppressed when a reload is in progress,
however, the logic was accidentally checking that
reload.is_in_progress was a defined function, not whether a reload was
actually in progress.
This run_test helper sets up a convention that allows
us to give really short tracebacks for errors, and
eventually we can have more control over running
individual tests. (The latter goal has some
complications, since we often intentionally leak
setup in tests.)
If the browser is in the progress of reloading when it finishes
fetching some messages, it's not really a bug, and we shouldn't report
it as such.
This should help make Zulip's browser error reporting less spammy.
Anders Kaseorg
Steve Howell
Riken Shah
Priyank Patel
clarammdantas
Rohitt Vashishtha
Steve Howell
Anders Kaseorg
Tim Abbott