test(wtr): consolidate __lwcReset functions into a single file @W-19098255 (#5532)

* test(wtr): use shorter name for function

* test(wtr): consolidate __lwcReset methods into single file

* test(wtr): move global reset into files as needed

* test(wtr): remove test that just tests test setup

* test(wtr): move global DOM reset into per-file resets

* test(wtr): rename `test-karma-lwc` to `test-lwc-integration`

we don't use karma any more

* test(wtr): reset logged messages in ARIA tests

* test(wtr): flatten logic in file

Author: wjhsf

packages/@lwc/engine-core/src/framework/check-version-mismatch.ts

@@ -16,7 +16,7 @@ import type { Stylesheet } from '@lwc/shared';
 let warned = false;
 
 // Only used in LWC's Karma tests
-if (process.env.NODE_ENV === 'test-karma-lwc') {
+if (process.env.NODE_ENV === 'test-lwc-integration') {
     (window as any).__lwcResetWarnedOnVersionMismatch = () => {
         warned = false;
     };

packages/@lwc/engine-core/src/framework/fragment-cache.ts

@@ -25,7 +25,7 @@ const fragmentCache: WeakMap<string[], Element>[] = ArrayFrom(
 );
 
 // Only used in LWC's Karma tests
-if (process.env.NODE_ENV === 'test-karma-lwc') {
+if (process.env.NODE_ENV === 'test-lwc-integration') {
     (window as any).__lwcResetFragmentCache = () => {
         for (let i = 0; i < fragmentCache.length; i++) {
             fragmentCache[i] = new WeakMap();

packages/@lwc/engine-core/src/framework/hot-swaps.ts

@@ -34,7 +34,7 @@ let activeComponents: WeakMultiMap<LightningElementConstructor, VM> =
 let activeStyles: WeakMultiMap<Stylesheet, VM> = /*@__PURE__@*/ new WeakMultiMap();
 
 // Only used in LWC's Karma tests
-if (process.env.NODE_ENV === 'test-karma-lwc') {
+if (process.env.NODE_ENV === 'test-lwc-integration') {
     // Used to reset the global state between test runs
     (window as any).__lwcResetHotSwaps = () => {
         swappedTemplateMap = new WeakMap();

packages/@lwc/engine-core/src/framework/mutation-logger.ts

@@ -99,7 +99,7 @@ export function logMutation(reactiveObserver: ReactiveObserver, target: object,
         // because the unit tests just create Reactive Observers on-the-fly.
         // Note we could explicitly target Vitest with `process.env.NODE_ENV === 'test'`, but then that would also
         // affect our downstream consumers' Jest/Vitest tests, and we don't want to throw an error just for a logger.
-        if (process.env.NODE_ENV === 'test-karma-lwc') {
+        if (process.env.NODE_ENV === 'test-lwc-integration') {
             throw new Error('The VM should always be defined except possibly in unit tests');
         }
     } else {

packages/@lwc/engine-core/src/framework/stylesheet.ts

@@ -37,7 +37,7 @@ let stylesheetsToCssContent: WeakMap<Stylesheet, Set<string>> = /*@__PURE__@*/ n
 let cssContentToAbortControllers: Map<string, AbortController> = /*@__PURE__@*/ new Map();
 
 // Only used in LWC's Karma tests
-if (process.env.NODE_ENV === 'test-karma-lwc') {
+if (process.env.NODE_ENV === 'test-lwc-integration') {
     // Used to reset the global state between test runs
     (window as any).__lwcResetStylesheetCache = () => {
         stylesheetsToCssContent = new WeakMap();

packages/@lwc/engine-core/src/framework/vm.ts

@@ -516,7 +516,7 @@ function computeShadowMode(
     if (
         // Force the shadow mode to always be native. Used for running tests with synthetic shadow patches
         // on, but components running in actual native shadow mode
-        (process.env.NODE_ENV === 'test-karma-lwc' &&
+        (process.env.NODE_ENV === 'test-lwc-integration' &&
             process.env.FORCE_NATIVE_SHADOW_MODE_FOR_TEST) ||
         // If synthetic shadow is explicitly disabled, use pure-native
         lwcRuntimeFlags.DISABLE_SYNTHETIC_SHADOW ||

packages/@lwc/engine-core/src/shared/logger.ts

@@ -12,7 +12,7 @@ import type { VM } from '../framework/vm';
 const alreadyLoggedMessages = new Set();
 
 // Only used in LWC's Karma tests
-if (process.env.NODE_ENV === 'test-karma-lwc') {
+if (process.env.NODE_ENV === 'test-lwc-integration') {
     (window as any).__lwcResetAlreadyLoggedMessages = () => {
         alreadyLoggedMessages.clear();
     };

packages/@lwc/engine-dom/src/styles.ts

@@ -51,7 +51,7 @@ const stylesheetCache: Map<string, CacheData> = new Map();
 //
 
 // Only used in LWC's Karma tests
-if (process.env.NODE_ENV === 'test-karma-lwc') {
+if (process.env.NODE_ENV === 'test-lwc-integration') {
     (window as any).__lwcResetGlobalStylesheets = () => {
         stylesheetCache.clear();
     };

packages/@lwc/features/src/index.ts

@@ -60,8 +60,8 @@ export function setFeatureFlag(name: FeatureFlagName, value: FeatureFlagValue):
         );
         return;
     }
-    // This may seem redundant, but `process.env.NODE_ENV === 'test-karma-lwc'` is replaced by Karma tests
-    if (process.env.NODE_ENV === 'test-karma-lwc' || process.env.NODE_ENV !== 'production') {
+    // This may seem redundant, but `process.env.NODE_ENV === 'test-lwc-integration'` is replaced by Karma tests
+    if (process.env.NODE_ENV === 'test-lwc-integration' || process.env.NODE_ENV !== 'production') {
         // Allow the same flag to be set more than once outside of production to enable testing
         flags[name] = value;
     } else {
@@ -86,8 +86,8 @@ export function setFeatureFlag(name: FeatureFlagName, value: FeatureFlagValue):
  * @example setFeatureFlag("DISABLE_NATIVE_CUSTOM_ELEMENT_LIFECYCLE", true)
  */
 export function setFeatureFlagForTest(name: FeatureFlagName, value: FeatureFlagValue): void {
-    // This may seem redundant, but `process.env.NODE_ENV === 'test-karma-lwc'` is replaced by Karma tests
-    if (process.env.NODE_ENV === 'test-karma-lwc' || process.env.NODE_ENV !== 'production') {
+    // This may seem redundant, but `process.env.NODE_ENV === 'test-lwc-integration'` is replaced by Karma tests
+    if (process.env.NODE_ENV === 'test-lwc-integration' || process.env.NODE_ENV !== 'production') {
         setFeatureFlag(name, value);
     }
 }

packages/@lwc/integration-karma/scripts/karma-plugins/hydration-tests.js

@@ -266,7 +266,10 @@ function createHCONFIG2JSPreprocessor(config, logger, emitter) {
                     testWatchFiles.concat(componentWatchFilesCSR).concat(componentWatchFilesSSR)
                 );
                 ssrOutput = await getSsrCode(
-                    componentDefSSR.replace(`process.env.NODE_ENV === 'test-karma-lwc'`, 'true'),
+                    componentDefSSR.replace(
+                        `process.env.NODE_ENV === 'test-lwc-integration'`,
+                        'true'
+                    ),
                     testCode,
                     path.join(suiteDir, 'ssr.js'),
                     expectedSSRConsoleCalls