This PR captures the code coverage from our unit and integration tests. At the
moment it simply pushes the result to Codacy, a platform that assists with
improving code health. Right now the focus is just getting visibility but I want
to experiment with alerts on PRs when a PR causes a drop in code coverage.
To be clear: I'm not a dogmatist about this: I have no aspirations to get to
100% code coverage, and I don't consider lines-of-code-covered to be a perfect
metric, but it is a pretty good heuristic for how extensive your tests are.
The good news is that our coverage is actually pretty good which was a surprise
to me!
As a conflict of interest statement: I'm in Codacy's 'Pioneers' program which
provides funding and mentorship, and part of the arrangement is to use Codacy's
tooling on lazygit. This is something I'd have been happy to explore even
without being part of the program, and just like with any other static analysis
tool, we can tweak it to fit our use case and values.
## How we're capturing code coverage
This deserves its own section. Basically when you build the lazygit binary you
can specify that you want the binary to capture coverage information when it
runs. Then, if you run the binary with a GOCOVERDIR env var, it will write
coverage information to that directory before exiting.
It's a similar story with unit tests except with those you just specify the
directory inline via `-test.gocoverdir`.
We run both unit tests and integration tests separately in CI, _and_ we run them
parallel with different OS's and git versions. So I've got each step uploading
the coverage files as an artefact, and then in a separate step we combine all
the artefacts together and generate a combined coverage file, which we then
upload to codacy (but in future we can do other things with it like warn in a PR
if code coverage decreases too much).
Another caveat is that when running integration tests, not only do we want to
obtain code coverage from code executed by the test binary, we also want to
obtain code coverage from code executed by the test runner. Otherwise, for each
integration test you add, the setup code (which is run by the test runner, not
the test binary) will be considered un-covered and for a large setup step it may
appear that your PR _decreases_ coverage on net. Go doesn't easily let you
exclude directories from coverage reports so it's better to just track the
coverage from both the runner and the binary.
The binary expects a GOCOVERDIR env var but the test runner expects a
test.gocoverdir positional arg and if you pass the positional arg it will
internally overwrite GOCOVERDIR to some random temp directory and if you then
pass that to the test binary, it doesn't seem to actually write to it by the
time the test finishes. So to get around that we're using LAZYGIT_GOCOVERDIR and
then within the test runner we're mapping that to GOCOVERDIR before running the
test binary. So they both end up writing to the same directory. Coverage data
files are named to avoid conflicts, including something unique to the process,
so we don't need to worry about name collisions between the test runner and the
test binary's coverage files. We then merge the files together purely for the
sake of having fewer artefacts to upload.
## Misc
Initially I was able to have all the instances of '/tmp/code_coverage' confined
to the ci.yml which was good because it was all in one place but now it's spread
across ci.yml and scripts/run_integration_tests.sh and I don't feel great about
that but can't think of a way to make it cleaner.
I believe there's a use case for running scripts/run_integration_tests.sh
outside of CI (so that you can run tests against older git versions locally) so
I've made it that unless you pass the LAZYGIT_GOCOVERDIR env var to that script,
it skips all the code coverage stuff.
On a separate note: it seems that Go's coverage report is based on percentage of
statements executed, whereas codacy cares more about lines of code executed, so
codacy reports a higher percentage (e.g. 82%) than Go's own coverage report
(74%).
Situations where a view's width changes:
- changing screen modes
- enter staging or patch building
- resizing the terminal window
For the first of these we currently have special code to force a rerender, since
some views render different content depending on whether they are in full-screen
mode. We'll be able to remove that code now, since this new generic mechanism
takes care of that too.
But we will need this more general mechanism for cases where views truncate
their content to the view width; we'll add one example for that later in this
branch.
refreshWorktrees re-renders the branches view, because the branches view shows
worktrees against branches. This means that when both BRANCHES and WORKTREES are
requested to be refreshed, the branches view would be rendered twice in short
succession. This causes an ugly visual glitch when force-pushing a branch,
because when pushing is done, we would see the ↑4↓9 status come back from under
the Pushing status for a brief moment, to be replaced with a green checkmark a
moment later.
Fix this by including the worktree refresh in the branches refresh when both are
requested. This means that the two are no longer running in parallel for an
async refresh, but hopefully that's not so bad.
When pulling/pushing/fast-forwarding a branch, show this state in the branches
list for that branch for as long as the operation takes, to make it easier to
see when it's done (without having to stare at the status bar in the lower
left).
This will hopefully help with making these operations feel more predictable, now
that we no longer show a loader panel for them.
Very similar to WithWaitingStatus, except that the status is shown in a view
next to the affected item, rather than in the status bar.
Not used by anything yet; again, committing separately to get smaller commits.
From the Go specification [1]:
"3. If the map is nil, the number of iterations is 0."
`len` returns 0 if the map is nil [2]. Therefore, checking `len(v) > 0`
before a loop is unnecessary.
[1]: https://go.dev/ref/spec#For_range
[2]: https://pkg.go.dev/builtin#len
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
This is not a complete fix, but it's good enough to fix the spurious test
failures of submodule/reset.go. We have some vague hope to fix this in a more
sustainable way by somehow improving our concurrency model fundamentally, but
that's a more long-term undertaking, and it's annoying that this test fails so
often, so let's fix it in this way for now.
A new gui config flag 'portraitMode':<string> is added to influence when
LazyGit stacks its UI components on top of one another.
The accepted values are 'auto', 'always', 'never'.
'auto': enter portrait mode when terminal becomes narrow enough
'always': always use portrait mode unconditional of the terminal
dimensions
'never': never use portraid mode
Signed-off-by: Louis DeLosSantos <louis.delos@gmail.com>
We're going to make this user config struct a more authoritative source of truth.
Some of these fields weren't actually explained anywhere so I've added explanations.
In places where a lot of explanation is required I've linked to existing explanations in other docs.
This has several benefits:
- it's less code
- we're using the same mechanism to generate all our auto-generated files, so if
someone wants to add a new one, it's clear which pattern to follow
- we can re-generate all generated files with a single command
("go generate ./...", or "make generate")
- we only need a single check on CI to check that all files are up to date (see
previous commit)
For the "cli" and "tui" modes of the test runner there's a "-race" parameter to
turn it on; for running tests on CI with go test, you turn it on by setting the
environment variable LAZYGIT_RACE_DETECTOR to a non-empty value.
Previously there was no way to render a view's search status without also moving the cursor
to the current search match. This caused issues where we wanted to display the status
after leaving the view and coming back, or when beginning a new search from within the
view.
This commit separates the two use cases so we only move the cursor when we're actually
selecting the next search match
Now that we no longer show it in a loader panel, but in the app status view,
it's awkwardly long (the loading animation is much further to the right than for
other waiting status texts). Hopefully seeing just "Fast-forwarding <branch>" is
enough to be able to tell what's happening.
