refactor(compiler-cli): add test for `BananaInBoxCheck` (#42984)

Create the test package for extended_template_diagnostics and add a unit
test for the `BananaInBoxCheck`.

Refs #42966

PR Close #42984

packages/compiler-cli/src/ngtsc/typecheck/extended/test/template_checks/invalid_banana_in_box/BUILD.bazel

@@ -0,0 +1,26 @@
+load("//tools:defaults.bzl", "jasmine_node_test", "ts_library")
+
+ts_library(
+    name = "test_lib",
+    testonly = True,
+    srcs = ["spec.ts"],
+    deps = [
+        "//packages/compiler",
+        "//packages/compiler-cli/src/ngtsc/diagnostics",
+        "//packages/compiler-cli/src/ngtsc/file_system",
+        "//packages/compiler-cli/src/ngtsc/file_system/testing",
+        "//packages/compiler-cli/src/ngtsc/testing",
+        "//packages/compiler-cli/src/ngtsc/typecheck/extended",
+        "//packages/compiler-cli/src/ngtsc/typecheck/extended/src/template_checks/invalid_banana_in_box",
+        "//packages/compiler-cli/src/ngtsc/typecheck/testing",
+        "@npm//typescript",
+    ],
+)
+
+jasmine_node_test(
+    name = "test",
+    bootstrap = ["//tools/testing:node_no_angular_es5"],
+    deps = [
+        ":test_lib",
+    ],
+)

packages/compiler-cli/src/ngtsc/typecheck/extended/test/template_checks/invalid_banana_in_box/spec.ts

@@ -0,0 +1,103 @@
+/**
+ * @license
+ * Copyright Google LLC 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 * as ts from 'typescript';
+import {ErrorCode} from '../../../../../diagnostics';
+import {absoluteFrom, getSourceFileOrError} from '../../../../../file_system';
+import {runInEachFileSystem} from '../../../../../file_system/testing';
+import {getSourceCodeForDiagnostic} from '../../../../../testing';
+import {getClass, setup} from '../../../../testing';
+import {getExtendedTemplateDiagnosticsForComponent} from '../../../src/template_checker';
+import {InvalidBananaInBoxCheck} from '../../../src/template_checks/invalid_banana_in_box/index';
+
+runInEachFileSystem(() => {
+  describe('TemplateChecks', () => {
+    it('should produce invalid banana in a box warning', () => {
+      const fileName = absoluteFrom('/main.ts');
+      const {program, templateTypeChecker} = setup([{
+        fileName,
+        templates: {
+          'TestCmp': '<div ([input])="var1"> </div>',
+        },
+        source: 'export class TestCmp { var1: string = "text"; }'
+      }]);
+      const sf = getSourceFileOrError(program, fileName);
+      const component = getClass(sf, 'TestCmp');
+      const diags = getExtendedTemplateDiagnosticsForComponent(
+          component, templateTypeChecker, program.getTypeChecker(),
+          [new InvalidBananaInBoxCheck()]);
+      expect(diags.length).toBe(1);
+      expect(diags[0].category).toBe(ts.DiagnosticCategory.Warning);
+      expect(diags[0].code).toBe(ErrorCode.INVALID_BANANA_IN_BOX);
+      expect(getSourceCodeForDiagnostic(diags[0])).toBe('([input])="var1"');
+    });
+
+    it('should not produce invalid banana in a box warning if written correctly', () => {
+      const fileName = absoluteFrom('/main.ts');
+      const {program, templateTypeChecker} = setup([{
+        fileName,
+        templates: {
+          'TestCmp': '<div [(input)]="var1"> </div>',
+        },
+        source: 'export class TestCmp { var1: string = "text"; }'
+      }]);
+      const sf = getSourceFileOrError(program, fileName);
+      const component = getClass(sf, 'TestCmp');
+      const diags = getExtendedTemplateDiagnosticsForComponent(
+          component, templateTypeChecker, program.getTypeChecker(),
+          [new InvalidBananaInBoxCheck()]);
+      expect(diags.length).toBe(0);
+    });
+
+    it('should not produce invalid banana in a box warning with bracket in the middle of the name',
+       () => {
+         const fileName = absoluteFrom('/main.ts');
+         const {program, templateTypeChecker} = setup([{
+           fileName,
+           templates: {
+             'TestCmp': '<div (abc[123]def)="var1"> </div>',
+           },
+           source: 'export class TestCmp { var1: string = "text"; }'
+         }]);
+         const sf = getSourceFileOrError(program, fileName);
+         const component = getClass(sf, 'TestCmp');
+         const diags = getExtendedTemplateDiagnosticsForComponent(
+             component, templateTypeChecker, program.getTypeChecker(),
+             [new InvalidBananaInBoxCheck()]);
+         expect(diags.length).toBe(0);
+       });
+
+    it('should produce invalid banana in a box warnings for *ngIf and ng-template', () => {
+      const fileName = absoluteFrom('/main.ts');
+      const {program, templateTypeChecker} = setup([{
+        fileName,
+        templates: {
+          'TestCmp': `<div> 
+             <div *ngIf="false" ([foo])="var1"> </div>
+             <ng-template #elseBlock ([bar])="var1">Content to render when condition is false.</ng-template>
+           </div>`,
+        },
+        source: `export class TestCmp { 
+           var1: string = "text";
+         }`
+      }]);
+      const sf = getSourceFileOrError(program, fileName);
+      const component = getClass(sf, 'TestCmp');
+      const diags = getExtendedTemplateDiagnosticsForComponent(
+          component, templateTypeChecker, program.getTypeChecker(),
+          [new InvalidBananaInBoxCheck()]);
+      expect(diags.length).toBe(2);
+      expect(diags[0].category).toBe(ts.DiagnosticCategory.Warning);
+      expect(diags[0].code).toBe(ErrorCode.INVALID_BANANA_IN_BOX);
+      expect(getSourceCodeForDiagnostic(diags[0])).toBe('([foo])="var1"');
+      expect(diags[1].category).toBe(ts.DiagnosticCategory.Warning);
+      expect(diags[1].code).toBe(ErrorCode.INVALID_BANANA_IN_BOX);
+      expect(getSourceCodeForDiagnostic(diags[1])).toBe('([bar])="var1"');
+    });
+  });
+});