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Preserve externally managed labels during synchronization (#957)

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* Preserve externally managed pull request labels

Replace whole-set label writes with batched selective additions and removals so sync-labels only manages configured labels.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: 44452010-1cd5-4e90-8abe-f03547c04182

* Reconcile ambiguous label addition failures

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: 44452010-1cd5-4e90-8abe-f03547c04182

* Handle paginated label reconciliation

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: 44452010-1cd5-4e90-8abe-f03547c04182

---------

Copilot-Session: 44452010-1cd5-4e90-8abe-f03547c04182
This commit is contained in:
Logan Rosen
2026-07-30 21:51:30 -05:00
committed by GitHub
co-authored by Copilot App
parent bf12e9b00b
commit b7a8804475
14 changed files with 553 additions and 2119 deletions
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__tests__/labeler.test.ts
+36 -5
View File
@@ -9,7 +9,8 @@ import type {
// Define API mock functions at module level
const getPullRequestsMock = jest.fn<any>();
const getLabelConfigsMock = jest.fn<any>();
const setLabelsMock = jest.fn<any>();
const addLabelsMock = jest.fn<any>();
const removeLabelsMock = jest.fn<any>();
const getChangedFilesMock = jest.fn<any>();
const getContentMock = jest.fn<any>();
@@ -42,7 +43,8 @@ jest.unstable_mockModule('@actions/github', () => ({
jest.unstable_mockModule('../src/api/index.js', () => ({
getPullRequests: getPullRequestsMock,
getLabelConfigs: getLabelConfigsMock,
setLabels: setLabelsMock,
addLabels: addLabelsMock,
removeLabels: removeLabelsMock,
getChangedFiles: getChangedFilesMock,
getContent: getContentMock
}));
@@ -478,7 +480,7 @@ describe('labeler error handling', () => {
});
it('throws a custom error for HttpError 403 with "unauthorized" message', async () => {
setLabelsMock.mockRejectedValue({
addLabelsMock.mockRejectedValue({
name: 'HttpError',
status: 403,
message: 'Request failed with status code 403: Unauthorized'
@@ -495,7 +497,7 @@ describe('labeler error handling', () => {
status: 404,
message: 'Not Found'
};
setLabelsMock.mockRejectedValue(unexpectedError);
addLabelsMock.mockRejectedValue(unexpectedError);
// NOTE: In the current implementation, labeler rethrows the raw error object (not an Error instance).
// `rejects.toThrow` only works with real Error objects, so here we must use `rejects.toEqual`.
@@ -508,7 +510,7 @@ describe('labeler error handling', () => {
name: 'HttpError',
message: 'Resource not accessible by integration'
};
setLabelsMock.mockRejectedValue(error);
addLabelsMock.mockRejectedValue(error);
await labeler();
@@ -518,4 +520,33 @@ describe('labeler error handling', () => {
);
expect(core.setFailed).toHaveBeenCalledWith(error.message);
});
it('reports the configured labels when a bulk removal fails', async () => {
(core.getBooleanInput as jest.Mock).mockReturnValue(true);
getPullRequestsMock.mockReturnValue([
{
number: 123,
data: {
node_id: 'PR_node_id',
labels: [{name: 'stale-label', node_id: 'label_node_id'}]
},
changedFiles: ['file.txt']
}
]);
getLabelConfigsMock.mockResolvedValue({
labelConfigs: new Map([
[
'stale-label',
[{any: [{changedFiles: [{anyGlobToAnyFile: ['*.pdf']}]}]}]
]
]),
changedFilesLimit: undefined
});
removeLabelsMock.mockRejectedValue(new Error('GraphQL request failed'));
await expect(labeler()).rejects.toThrow(
"Failed to remove configured labels 'stale-label' from PR #123"
);
expect(addLabelsMock).not.toHaveBeenCalled();
});
});