fix(manager/mix): Support umbrella projects (#11854)

Co-authored-by: Rhys Arkins <rhys@arkins.net>

lib/manager/mix/artifacts.spec.ts

@@ -84,7 +84,7 @@ describe('manager/mix/artifacts', () => {
     jest.spyOn(docker, 'removeDanglingContainers').mockResolvedValueOnce();
     setGlobalConfig({ ...adminConfig, binarySource: 'docker' });
     fs.readLocalFile.mockResolvedValueOnce('Old mix.lock');
-    fs.getSiblingFileName.mockReturnValueOnce('mix.lock');
+    fs.findLocalSiblingOrParent.mockResolvedValueOnce('mix.lock');
     const execSnapshots = mockExecAll(exec);
     fs.readLocalFile.mockResolvedValueOnce('New mix.lock');
     expect(
@@ -102,7 +102,7 @@ describe('manager/mix/artifacts', () => {
     jest.spyOn(docker, 'removeDanglingContainers').mockResolvedValueOnce();
     setGlobalConfig({ ...adminConfig, binarySource: 'docker' });
     fs.readLocalFile.mockResolvedValueOnce('Old mix.lock');
-    fs.getSiblingFileName.mockReturnValueOnce('mix.lock');
+    fs.findLocalSiblingOrParent.mockResolvedValueOnce('mix.lock');
     const execSnapshots = mockExecAll(exec);
     fs.readLocalFile.mockResolvedValueOnce('New mix.lock');
     hostRules.find.mockReturnValueOnce({ token: 'valid_test_token' });
@@ -141,7 +141,7 @@ describe('manager/mix/artifacts', () => {
 
   it('returns updated mix.lock in subdir', async () => {
     setGlobalConfig({ ...adminConfig, binarySource: 'docker' });
-    fs.getSiblingFileName.mockReturnValueOnce('subdir/mix.lock');
+    fs.findLocalSiblingOrParent.mockResolvedValueOnce('subdir/mix.lock');
     mockExecAll(exec);
     expect(
       await updateArtifacts({
@@ -156,7 +156,7 @@ describe('manager/mix/artifacts', () => {
 
   it('catches write errors', async () => {
     fs.readLocalFile.mockResolvedValueOnce('Current mix.lock');
-    fs.getSiblingFileName.mockReturnValueOnce('mix.lock');
+    fs.findLocalSiblingOrParent.mockResolvedValueOnce('mix.lock');
     fs.writeLocalFile.mockImplementationOnce(() => {
       throw new Error('not found');
     });
@@ -174,7 +174,7 @@ describe('manager/mix/artifacts', () => {
 
   it('catches exec errors', async () => {
     fs.readLocalFile.mockResolvedValueOnce('Current mix.lock');
-    fs.getSiblingFileName.mockReturnValueOnce('mix.lock');
+    fs.findLocalSiblingOrParent.mockResolvedValueOnce('mix.lock');
     exec.mockImplementationOnce(() => {
       throw new Error('exec-error');
     });

lib/manager/mix/artifacts.ts

@@ -3,7 +3,7 @@ import { TEMPORARY_ERROR } from '../../constants/error-messages';
 import { logger } from '../../logger';
 import { ExecOptions, exec } from '../../util/exec';
 import {
-  getSiblingFileName,
+  findLocalSiblingOrParent,
   readLocalFile,
   writeLocalFile,
 } from '../../util/fs';
@@ -24,7 +24,8 @@ export async function updateArtifacts({
     return null;
   }
 
-  const lockFileName = getSiblingFileName(packageFileName, 'mix.lock');
+  const lockFileName =
+    (await findLocalSiblingOrParent(packageFileName, 'mix.lock')) || 'mix.lock';
   try {
     await writeLocalFile(packageFileName, newPackageFileContent);
   } catch (err) {

lib/manager/mix/extract.ts

 import { HexDatasource } from '../../datasource/hex';
 import { logger } from '../../logger';
 import { SkipReason } from '../../types';
-import { getSiblingFileName, localPathExists } from '../../util/fs';
+import { findLocalSiblingOrParent, localPathExists } from '../../util/fs';
 import type { PackageDependency, PackageFile } from '../types';
 
 const depSectionRegExp = /defp\s+deps.*do/g;
@@ -67,7 +67,8 @@ export async function extractPackageFile(
     }
   }
   const res: PackageFile = { deps };
-  const lockFileName = getSiblingFileName(fileName, 'mix.lock');
+  const lockFileName =
+    (await findLocalSiblingOrParent(fileName, 'mix.lock')) || 'mix.lock';
   // istanbul ignore if
   if (await localPathExists(lockFileName)) {
     res.lockFiles = [lockFileName];