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Explicitly disable sparse checkout unless asked for (#1598)

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When a worktree is reused by actions/checkout and the first time sparse checkout was enabled, we need to ensure that the second time it is only a sparse checkout if explicitly asked for. Otherwise, we need to disable the sparse checkout so that a full checkout is the outcome of this Action.

## Details
* If no `sparse-checkout` parameter is specified, disable it

This should allow users to reuse existing folders when running
`actions/checkout` where a previous run asked for a sparse checkout but
the current run does not ask for a sparse checkout.

This fixes https://github.com/actions/checkout/issues/1475

There are use cases in particular with non-ephemeral (self-hosted) runners where an
existing worktree (that has been initialized as a sparse checkout) is
reused in subsequent CI runs (where `actions/checkout` is run _without_
any `sparse-checkout` parameter).

In these scenarios, we need to make sure that the sparse checkout is
disabled before checking out the files.

### Also includes:

* npm run build
* ci: verify that an existing sparse checkout can be made unsparse
* Added a clarifying comment about test branches.
* `test-proxy` now uses newly-minted `test-ubuntu-git` container image from ghcr.io

---------

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Co-authored-by: John Wesley Walker III <81404201+jww3@users.noreply.github.com>
This commit is contained in:
Johannes Schindelin 2024-02-21 13:56:19 +01:00 • committed by GitHub
parent df0bcddf6d
commit aadec89964
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6 changed files with 36 additions and 4 deletions
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10
dist/index.js vendored
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@ -576,6 +576,11 @@ class GitCommandManager {
return result;
});
}
disableSparseCheckout() {
return __awaiter(this, void 0, void 0, function* () {
yield this.execGit(['sparse-checkout', 'disable']);
});
}
sparseCheckout(sparseCheckout) {
return __awaiter(this, void 0, void 0, function* () {
yield this.execGit(['sparse-checkout', 'set', ...sparseCheckout]);
@ -1282,7 +1287,10 @@ function getSource(settings) {
core.endGroup();
}
// Sparse checkout
if (settings.sparseCheckout) {
if (!settings.sparseCheckout) {
yield git.disableSparseCheckout();
}
else {
core.startGroup('Setting up sparse checkout');
if (settings.sparseCheckoutConeMode) {
yield git.sparseCheckout(settings.sparseCheckout);