From 06525cfed3b8db949952e71c787e76c7c318929e Mon Sep 17 00:00:00 2001
From: JoostK <joost.koehoorn@gmail.com>
Date: Sat, 26 Sep 2020 22:28:12 +0200
Subject: [PATCH] test(compiler-cli): fix tests to have at least one component
 (#39011)

With the introduction of incremental type checking in #36211, an
intermediate `ts.Program` for type checking is only created if there are
any templates to check. This rendered some tests ineffective at avoiding
regressions, as the intermediate `ts.Program` was required for the tests
to fail if the scenario under test would not be accounted for. This
commit adds a single component to these tests, to ensure the
intermediate `ts.Program` is in fact created.

PR Close #39011
---
 .../compiler-cli/test/ngtsc/incremental_spec.ts     | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/packages/compiler-cli/test/ngtsc/incremental_spec.ts b/packages/compiler-cli/test/ngtsc/incremental_spec.ts
index a7fd2024f9..59be3f750d 100644
--- a/packages/compiler-cli/test/ngtsc/incremental_spec.ts
+++ b/packages/compiler-cli/test/ngtsc/incremental_spec.ts
@@ -433,8 +433,13 @@ runInEachFileSystem(() => {
     });
 
     it('should compile incrementally with template type-checking turned on', () => {
-      env.tsconfig({ivyTemplateTypeCheck: true});
-      env.write('main.ts', 'export class Foo {}');
+      env.tsconfig({fullTemplateTypeCheck: true});
+      env.write('main.ts', `
+        import {Component} from '@angular/core';
+
+        @Component({template: ''})
+        export class MyComponent {}
+      `);
       env.driveMain();
       env.invalidateCachedFile('main.ts');
       env.driveMain();
@@ -482,8 +487,12 @@ runInEachFileSystem(() => {
       env.write('node_modules/b/index.js', `export {ServiceA as ServiceB} from 'a';`);
       env.write('node_modules/b/index.d.ts', `export {ServiceA as ServiceB} from 'a';`);
       env.write('test.ts', `
+        import {Component} from '@angular/core';
         import {ServiceA} from 'a';
         import {ServiceB} from 'b';
+
+        @Component({template: ''})
+        export class MyComponent {}
       `);
       env.driveMain();
       env.flushWrittenFileTracking();