fix: Suppress filesystem errors during glob search

cli/CHANGELOG.md

@@ -16,6 +16,7 @@ _Released 02/14/2023 (PENDING)_
 - Fixed an issue in middleware where error-handling code could itself generate an error and fail to report the original issue. Fixes [#22825](https://github.com/cypress-io/cypress/issues/22825).
 - Fixed an issue that could cause the Debug page to display a different number of specs for in-progress runs than shown in Cypress Cloud. Fixes [#25647](https://github.com/cypress-io/cypress/issues/25647).
 - Fixed an issue introduced in Cypress 12.3.0 where custom browsers that relied on process environment variables were not found on macOS arm64 architectures. Fixed in [#25753](https://github.com/cypress-io/cypress/pull/25753).
+- Fixed an issue where Cypress would fail to load any specs if the project `specPattern` included a resource that could not be accessed due to filesystem permissions. Fixes [#24109](https://github.com/cypress-io/cypress/issues/24109).
 
 **Misc:**
 

packages/data-context/src/sources/FileDataSource.ts

@@ -34,7 +34,7 @@ export class FileDataSource {
     return this.ctx.fs.readFile(path.join(this.ctx.currentProject, relative), 'utf-8')
   }
 
-  async getFilesByGlob (cwd: string, glob: string | string[], globOptions?: GlobbyOptions) {
+  async getFilesByGlob (cwd: string, glob: string | string[], globOptions: GlobbyOptions = {}): Promise<string[]> {
     const globs = ([] as string[]).concat(glob).map((globPattern) => {
       const workingDirectoryPrefix = path.join(cwd, path.sep)
 
@@ -49,7 +49,7 @@ export class FileDataSource {
       return globPattern
     })
 
-    const ignoreGlob = (globOptions?.ignore ?? []).concat('**/node_modules/**')
+    const ignoreGlob = (globOptions.ignore ?? []).concat('**/node_modules/**')
 
     if (os.platform() === 'win32') {
       // globby can't work with backwards slashes
@@ -72,7 +72,15 @@ export class FileDataSource {
 
       return files
     } catch (e) {
-      debug('error in getFilesByGlob %o', e)
+      if (!globOptions.suppressErrors) {
+        // Log error and retry with filesystem errors suppressed - this allows us to find partial
+        // results even if the glob search hits permission issues (#24109)
+        debug('Error in getFilesByGlob %o, retrying with filesystem errors suppressed', e)
+
+        return await this.getFilesByGlob(cwd, glob, { ...globOptions, suppressErrors: true })
+      }
+
+      debug('Non-suppressible error in getFilesByGlob %o', e)
 
       return []
     }

packages/data-context/test/unit/sources/FileDataSource.spec.ts

@@ -272,6 +272,35 @@ describe('FileDataSource', () => {
           },
         )
       })
+
+      it('should retry search with `suppressErrors` if non-suppressed attempt fails', async () => {
+        matchGlobsStub.onFirstCall().rejects(new Error('mocked filesystem error'))
+        matchGlobsStub.onSecondCall().resolves(mockMatches)
+
+        const files = await fileDataSource.getFilesByGlob(
+          '/',
+          '/cypress/e2e/**.cy.js',
+          { absolute: false, objectMode: true },
+        )
+
+        expect(files).to.eq(mockMatches)
+        expect(matchGlobsStub).to.have.callCount(2)
+        expect(matchGlobsStub.getCall(0).args[1].suppressErrors).to.be.undefined
+        expect(matchGlobsStub.getCall(1).args[1].suppressErrors).to.equal(true)
+      })
+
+      it('should return empty array if retry with suppression fails', async () => {
+        matchGlobsStub.rejects(new Error('mocked filesystem error'))
+
+        const files = await fileDataSource.getFilesByGlob(
+          '/',
+          '/cypress/e2e/**.cy.js',
+          { absolute: false, objectMode: true },
+        )
+
+        expect(files).to.eql([])
+        expect(matchGlobsStub).to.have.callCount(2)
+      })
     })
   })
 })