status-react/nix
Icaro Motta 0b4a1545ae
Fix component tests, upgrade Jest & friends, and a few other goodies (#18276)
Fix all component tests after the latest RN upgrade.

Fixes https://github.com/status-im/status-mobile/issues/18157
Closes https://github.com/status-im/status-mobile/pull/18235

Dependency changes

- Upgraded Jest: from 26.6.3 to latest 29.7.0.
- Upgraded @testing-library/jest-native: from 5.3.0 to latest 5.4.3
- Upgraded @testing-library/react-native: from 11.5.4 to 12.4.2
- Removed explicit dependency on jest-circus, this is now the default test
  runner.
- Removed explicit dependency on jest-environment-node. This is handled by the
  package manager.
- Added jest-silent-reporter at version 0.5.0.

### Why component tests were failing?

Many tests were failing because we were using RN Testing Library (RNTL) in an
unreliable fashion. With the recent library upgrades, the unreliability was
excerbated. Other times, the tests were incorrectly arranging data.

### with-redefs does not work with async code

Generally speaking, with-redefs should not be used with async code, assume the
worst. The scope of the macro will cease to exist by the time the async code
runs. In many tests we were using with-redefs, then calling render, but for some
components that use use-effect, JS timers, animations, etc it's unreliable and
were the reason for failures.

It's easy to reproduce too:

```clojure
(defn foo []
  :foo)

(foo)
;; => :foo

(with-redefs [foo (constantly :bar)]
  (foo))
;; => :bar

(js/setTimeout
 (fn []
   (tap> [:calling-foo (foo)]))
 100)
;; Taps [:calling-foo :foo]
;; As you would expect, when running without with-redefs, it prints :foo.

;; So far so good, but whatch what happens with async code:

(with-redefs [foo (constantly :bar)]
  (js/setTimeout
   (fn []
     (tap> [:calling-foo (foo)]))
   100))
;; Taps [:calling-foo :foo]
;; ====> PROBLEM: Taps :foo, not :bar as one might expect
```

### Not waiting on wait-for

When test-helpers.component/wait-for is used, subsequent assertions/etc should
be done after the promise returned by wait-for is resolved. But remember to not
perform side-effects inside the wait-for callback (check out the docs
https://callstack.github.io/react-native-testing-library/docs/api#waitfor).
Most, if not all of our usages of wait-for were not waiting.

#### Improvement 1 - Silence Jest on demand

If you need to re-run component tests frequently, you may want to reduce the
output verbosity. By passing JEST_USE_SILENT_REPORTER=true to make
component-test or make component-test-watch you will see a lot less noise and be
able to focus on what really matters to you.

#### Improvement 2 - Selectively focus/disable tests

Because of our need to first compile CLJS to JS before running tests via Jest,
we couldn't easily skip or focus on specific tests. From this commit onwards, we
should never again have to change the list of requires in files core_spec.cljs.
Commenting out required namespaces gives a bad DX because it causes constant
rebasing issues.

#### Improvement 3 - Translations now work as in prod code (but only English)

Translations performed by *-by-translation-text can be done now without any
workaround under the hood. The query functions are now linted just like
i18n/label, which means static translation keywords must be qualified with :t/,
which is good for consistency.
2023-12-26 11:58:23 -03:00
..
deps Fix component tests, upgrade Jest & friends, and a few other goodies (#18276) 2023-12-26 11:58:23 -03:00
lib nix: switch status-im config to env vars, cleanup 2023-08-07 14:50:36 +02:00
mobile feat: add `xcbeautify` to iOS shell (#18273) 2023-12-22 19:45:59 +05:30
pkgs feat: add `xcbeautify` to iOS shell (#18273) 2023-12-22 19:45:59 +05:30
scripts make purge script more robust for Darwin (#18192) 2023-12-19 08:46:19 +05:30
status-go Update status-go to v0.167.6 2023-10-04 01:16:25 +03:00
DETAILS.md nix: switch status-im config to env vars, cleanup 2023-08-07 14:50:36 +02:00
KNOWN_ISSUES.md nix: fix applying nix.conf by using correct env var 2023-06-20 13:55:07 +02:00
README.md nix: switch status-im config to env vars, cleanup 2023-08-07 14:50:36 +02:00
default.nix Cleanup 2020-01-10 19:59:54 +01:00
nix.conf nix: build derivation from sources if cache fails 2023-06-25 23:34:59 +02:00
overlay.nix feat: add `xcbeautify` to iOS shell (#18273) 2023-12-22 19:45:59 +05:30
pkgs.nix nix: switch status-im config to env vars, cleanup 2023-08-07 14:50:36 +02:00
shell.nix chore: add lsp clean-ns in lint-fix (#17661) 2023-10-18 00:17:43 +08:00
shells.nix add translation linting to the "make lint" pipeline. (#17820) 2023-11-07 11:33:59 +01:00
targets.nix drop all desktop related files and references 2020-07-08 10:26:51 +02:00

README.md

Description

This folder contains configuration for Nix, a purely functional package manager used by the Status app for its build process.

Configuration

The main config file is nix/nix.conf and its main purpose is defining the binary caches which allow download of packages to avoid having to compile them yourself locally.

Build arguments

We leverage the environment variables for parameterization of the builds (e.g. to pass a build number or build type).

Here is the list of variables you can use to override defaults:

# Build type (influences which .env file gets used for feature flags)
export BUILD_TYPE="pr"
# Used for versionCode and CFBundleVersion in Android and iOS respectively
export BUILD_NUMBER=9999
# Gradle options passed for Android builds
export ANDROID_GRADLE_OPTS=""
# If APKs should be split based on architectures
export ANDROID_ABI_SPLIT=false
# Android architectures to build for
export ANDROID_ABI_INCLUDE="x86"
# Local source override, see below
export STATUS_GO_SRC_OVERRIDE="$HOME/my/source/status-go"
export STATUS_GO_IPFS_GATEWAY_URL="https://ipfs.status.im/"

You can see the defaults in code:

Shell

In order to access an interactive Nix shell a user should run make shell.

The Nix shell is started in this repo via the nix/scripts/shell.sh script, which is a wrapper around the nix-shell command and is intended for use with our main Makefile. This allows for an implicit use of nix-shell as the default shell in the Makefile.

Normally the shell starts without any specific target platform, if you want to change that you should export the TARGET env variable with appropriate value:

make shell TARGET=android

This way your shell and all other nix commands should run in a setup that is tailored towards Android development.

For valid values you can check the nix/shells.nix file.

⚠️ WARNING: To have Nix pick up all changes a new nix-shell needs to be spawned.

Using a local status-go repository

If you need to use a locally checked-out status-go repository, you can achieve that by defining the STATUS_GO_SRC_OVERRIDE environment variable:

export STATUS_GO_SRC_OVERRIDE=$GOPATH/src/github.com/status-im/status-go
make release-android

Resources

You can learn more about Nix by watching these presentations:

And you can read nix/DETAILS.md for more information.

Known Issues

See KNOWN_ISSUES.md.