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Add go-version-file-behavior input

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By default an exact version read from go-version-file is used as
written, so a "go 1.22.0" directive pins CI to the oldest patch
release of the minor even when newer patches with security fixes
exist. Dependencies can force such an exact version into go.mod.

Setting go-version-file-behavior to latest-patch widens an exact
major.minor.patch version into a ~X.Y.Z range, resolving the newest
available patch release of the same minor while keeping the file's
version as a floor. Bare minors and prereleases pass through
unchanged. The default behavior (exact) is unchanged.
This commit is contained in:
John Maguire 2026-08-18 11:35:13 -04:00
commit 71b6f8926f
7 changed files with 168 additions and 0 deletions
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92
__tests__/setup-go.test.ts
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@ -1089,6 +1089,98 @@ use .
);
});
describe('go-version-file-behavior', () => {
const buildGoMod = (goVersion: string) => `module example.com/mymodule
go ${goVersion}
`;
it('resolves the latest patch of the minor with latest-patch', async () => {
os.platform = 'linux';
os.arch = 'x64';
inputs['go-version-file'] = 'go.mod';
inputs['go-version-file-behavior'] = 'latest-patch';
inputs['token'] = 'faketoken';
existsSpy.mockImplementation(() => true);
readFileSpy.mockImplementation(() => Buffer.from(buildGoMod('1.12.16')));
const expectedUrl =
'https://github.com/actions/go-versions/releases/download/1.12.17-20200616.21/go-1.12.17-linux-x64.tar.gz';
// ... but not in the local cache
findSpy.mockImplementation(() => '');
dlSpy.mockImplementation(async () => '/some/temp/path');
const toolPath = path.normalize('/cache/go/1.12.17/x64');
extractTarSpy.mockImplementation(async () => '/some/other/temp/path');
cacheSpy.mockImplementation(async () => toolPath);
await main.run();
expect(logSpy).toHaveBeenCalledWith(
'Using latest patch release satisfying ~1.12.16 (version file specifies 1.12.16)'
);
expect(logSpy).toHaveBeenCalledWith('Setup go version spec ~1.12.16');
expect(logSpy).toHaveBeenCalledWith(
`Acquiring 1.12.17 from ${expectedUrl}`
);
});
it('leaves a bare minor version unchanged with latest-patch', async () => {
inputs['go-version-file'] = 'go.mod';
inputs['go-version-file-behavior'] = 'latest-patch';
existsSpy.mockImplementation(() => true);
readFileSpy.mockImplementation(() => Buffer.from(buildGoMod('1.14')));
await main.run();
expect(logSpy).toHaveBeenCalledWith('Setup go version spec 1.14');
});
it('uses the exact version by default', async () => {
inputs['go-version-file'] = 'go.mod';
existsSpy.mockImplementation(() => true);
readFileSpy.mockImplementation(() => Buffer.from(buildGoMod('1.12.16')));
await main.run();
expect(logSpy).toHaveBeenCalledWith('Setup go version spec 1.12.16');
});
it('does not apply to the go-version input', async () => {
inputs['go-version'] = '1.12.16';
inputs['go-version-file-behavior'] = 'latest-patch';
await main.run();
expect(logSpy).toHaveBeenCalledWith('Setup go version spec 1.12.16');
});
it('fails on an unsupported value', async () => {
inputs['go-version-file'] = 'go.mod';
inputs['go-version-file-behavior'] = 'newest';
existsSpy.mockImplementation(() => true);
readFileSpy.mockImplementation(() => Buffer.from(buildGoMod('1.12.16')));
await main.run();
expect(cnSpy).toHaveBeenCalledWith(
`::error::Invalid go-version-file-behavior: 'newest'. Supported values: 'exact', 'latest-patch'${osm.EOL}`
);
});
it.each([
['1.22.0', '~1.22.0'],
['1.22', '1.22'],
['1.21rc2', '1.21rc2'],
['1.22.x', '1.22.x'],
['>=1.22.0', '>=1.22.0']
])('latestPatchSpec(%s) == %s', (version, expected) => {
expect(im.latestPatchSpec(version)).toBe(expected);
});
});
describe('go-version-file-toolchain', () => {
const goVersions = ['1.22.0', '1.21rc2', '1.18'];
const placeholderVersion = '1.19';