test(language-service): remove ng-if-cases.ts (#36470)

This commit removes ng-if-cases.ts and moves all test cases to inline
expressions in TEST_TEMPLATE.

PR Close #36470

packages/language-service/test/project/app/main.ts

@@ -11,7 +11,6 @@ import {NgModule} from '@angular/core';
 import {FormsModule} from '@angular/forms';
 import {AppComponent} from './app.component';
 import * as NgForCases from './ng-for-cases';
-import * as NgIfCases from './ng-if-cases';
 import * as ParsingCases from './parsing-cases';
 
 @NgModule({
@@ -21,7 +20,6 @@ import * as ParsingCases from './parsing-cases';
     NgForCases.UnknownEven,
     NgForCases.UnknownPeople,
     NgForCases.UnknownTrackBy,
-    NgIfCases.ShowIf,
     ParsingCases.AsyncForUsingComponent,
     ParsingCases.CaseIncompleteOpen,
     ParsingCases.CaseMissingClosing,

packages/language-service/test/project/app/ng-if-cases.ts

@@ -1,19 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-import {Component} from '@angular/core';
-
-@Component({
-  template: `
-    <div ~{start-implicit}*ngIf="show; let l=unknown"~{end-implicit}>
-      Showing now!
-    </div>`,
-})
-export class ShowIf {
-  show = false;
-}

packages/language-service/test/ts_plugin_spec.ts

@@ -57,8 +57,8 @@ describe('plugin', () => {
     const compilerDiags = tsLS.getCompilerOptionsDiagnostics();
     expect(compilerDiags).toEqual([]);
     const sourceFiles = program.getSourceFiles().filter(f => !f.fileName.endsWith('.d.ts'));
-    // there are five .ts files in the test project
-    expect(sourceFiles.length).toBe(5);
+    // there are three .ts files in the test project
+    expect(sourceFiles.length).toBe(3);
     for (const {fileName} of sourceFiles) {
       const syntacticDiags = tsLS.getSyntacticDiagnostics(fileName);
       expect(syntacticDiags).toEqual([]);