diff --git a/src/testRunner/unittests/tsserver/resolutionCache.ts b/src/testRunner/unittests/tsserver/resolutionCache.ts index 33b59e2faae..11b604bb20c 100644 --- a/src/testRunner/unittests/tsserver/resolutionCache.ts +++ b/src/testRunner/unittests/tsserver/resolutionCache.ts @@ -975,5 +975,33 @@ export const x = 10;` host.checkTimeoutQueueLength(0); }); }); + + describe("avoid unnecessary invalidation", () => { + it("failed lookup invalidation", () => { + const expectedNonRelativeDirectories = [`${projectLocation}/node_modules`, `${projectLocation}/src`]; + const module1Name = "module1"; + const module2Name = "module2"; + const fileContent = `import { module1 } from "${module1Name}";import { module2 } from "${module2Name}";`; + const file1: File = { + path: `${projectLocation}/src/file1.ts`, + content: fileContent + }; + const { module1, module2 } = getModules(`${projectLocation}/src/node_modules/module1/index.ts`, `${projectLocation}/node_modules/module2/index.ts`); + const files = [module1, module2, file1, configFile, libFile]; + const host = createServerHost(files); + const resolutionTrace = createHostModuleResolutionTrace(host); + const service = createProjectService(host); + service.openClientFile(file1.path); + const project = service.configuredProjects.get(configFile.path)!; + (project as ResolutionCacheHost).maxNumberOfFilesToIterateForInvalidation = 1; + const expectedTrace = getExpectedNonRelativeModuleResolutionTrace(host, file1, module1, module1Name); + getExpectedNonRelativeModuleResolutionTrace(host, file1, module2, module2Name, expectedTrace); + verifyTrace(resolutionTrace, expectedTrace); + verifyWatchesWithConfigFile(host, files, file1, expectedNonRelativeDirectories); + + host.invokeWatchedDirectoriesRecursiveCallback(projectLocation + "/src", "file1.ts"); + host.checkTimeoutQueueLengthAndRun(0); + }); + }); }); }