Skip incremental verification for alternate result test

src/testRunner/unittests/helpers/tscWatch.ts

@@ -30,6 +30,7 @@ export interface TscWatchCompileChange<T extends ts.BuilderProgram = ts.EmitAndS
 export interface TscWatchCheckOptions {
     baselineSourceMap?: boolean;
     baselineDependencies?: boolean;
+    skipIncrementalVerification?: true;
 }
 export interface TscWatchCompileBase<T extends ts.BuilderProgram = ts.EmitAndSemanticDiagnosticsBuilderProgram> extends TscWatchCheckOptions {
     scenario: string;
@@ -57,6 +58,7 @@ function tscWatchCompile(input: TscWatchCompile) {
             edits,
             baselineSourceMap,
             baselineDependencies,
+            skipIncrementalVerification,
         } = input;
         ts.Debug.assert(isWatch(commandLineArgs), "use verifyTsc");
         const { cb, getPrograms } = commandLineCallbacks(sys);
@@ -74,6 +76,7 @@ function tscWatchCompile(input: TscWatchCompile) {
             getPrograms,
             baselineSourceMap,
             baselineDependencies,
+            skipIncrementalVerification,
             edits,
             watchOrSolution,
         });
@@ -143,6 +146,7 @@ export function runWatchBaseline<T extends ts.BuilderProgram = ts.EmitAndSemanti
     baseline,
     baselineSourceMap,
     baselineDependencies,
+    skipIncrementalVerification,
     edits,
     watchOrSolution,
     useSourceOfProjectReferenceRedirect,
@@ -155,6 +159,7 @@ export function runWatchBaseline<T extends ts.BuilderProgram = ts.EmitAndSemanti
         sys,
         baselineSourceMap,
         baselineDependencies,
+        skipIncrementalVerification,
     });
 
     if (edits) {
@@ -168,6 +173,7 @@ export function runWatchBaseline<T extends ts.BuilderProgram = ts.EmitAndSemanti
                 sys,
                 baselineSourceMap,
                 baselineDependencies,
+                skipIncrementalVerification,
                 caption,
                 resolutionCache: (watchOrSolution as ts.WatchOfConfigFile<T> | undefined)?.getResolutionCache?.(),
                 useSourceOfProjectReferenceRedirect,
@@ -191,6 +197,7 @@ export function watchBaseline({
     sys,
     baselineSourceMap,
     baselineDependencies,
+    skipIncrementalVerification,
     caption,
     resolutionCache,
     useSourceOfProjectReferenceRedirect,
@@ -205,7 +212,7 @@ export function watchBaseline({
         baselineDependencies,
     );
     // Verify program structure and resolution cache when incremental edit with tsc --watch (without build mode)
-    if (resolutionCache && programs.length) {
+    if (!skipIncrementalVerification && resolutionCache && programs.length) {
         ts.Debug.assert(programs.length === 1);
         verifyProgramStructureAndResolutionCache(
             caption!,

src/testRunner/unittests/helpers/tsserver.ts

@@ -197,6 +197,7 @@ export interface TestSessionOptions extends ts.server.SessionOptions, TestTyping
     disableAutomaticTypingAcquisition?: boolean;
     useCancellationToken?: boolean | number;
     regionDiagLineCountThreshold?: number;
+    skipIncrementalVerification?: true;
 }
 export type TestSessionPartialOptionsAndHost =
     & Partial<Omit<TestSessionOptions, "typingsInstaller" | "cancellationToken">>
@@ -237,7 +238,7 @@ export class TestSession extends ts.server.Session {
             hrtime: process.hrtime,
             logger: opts.logger,
             canUseEvents: true,
-            incrementalVerifier,
+            incrementalVerifier: opts.skipIncrementalVerification ? undefined : incrementalVerifier,
             typesMapLocation: customTypesMap.path,
             typingsInstaller,
             ...opts,

src/testRunner/unittests/tscWatch/moduleResolution.ts

@@ -540,6 +540,7 @@ describe("unittests:: tscWatch:: moduleResolution::", () => {
                 sys,
                 commandLineArgs: ["-w", "--extendedDiagnostics"],
                 edits: edits(),
+                skipIncrementalVerification: true,
             }),
     );
 

src/testRunner/unittests/tsserver/moduleResolution.ts

@@ -162,7 +162,7 @@ describe("unittests:: tsserver:: moduleResolution::", () => {
             it(scenario, () => {
                 const host = getHost();
                 const indexFile = "/home/src/projects/project/index.mts";
-                const session = new TestSession(host);
+                const session = new TestSession({ host, skipIncrementalVerification: true });
                 openFilesForSession([indexFile], session);
                 verifyGetErrRequest({ files: [indexFile], session });
                 forEachTscWatchEdit(session, edits(), () => verifyGetErrRequest({ session, files: [indexFile] }));