issue #1404, issue #1762, issue #1763 Add support for line breaks, markdown and mathjax in metadata

src/app/shared/utils/markdown.pipe.spec.ts

@@ -0,0 +1,66 @@
+import { MarkdownPipe } from './markdown.pipe';
+import { TestBed } from '@angular/core/testing';
+import { APP_CONFIG } from '../../../config/app-config.interface';
+import { environment } from '../../../environments/environment';
+
+describe('Markdown Pipe', () => {
+
+  let markdownPipe: MarkdownPipe;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      providers: [
+        MarkdownPipe,
+        {
+          provide: APP_CONFIG,
+          useValue: Object.assign(environment, {
+            enableMarkdown: true,
+            enableMathjax: true,
+          })
+        },
+      ],
+    }).compileComponents();
+
+    markdownPipe = TestBed.inject(MarkdownPipe);
+  });
+
+  it('should render markdown', async () => {
+    await testTransform(
+      '# Header',
+      '<h1>Header</h1>'
+    );
+  });
+
+  it('should render mathjax', async () => {
+    await testTransform(
+      '$\\sqrt{2}^2$',
+      '<svg.*?>.*</svg>'
+    );
+  });
+
+  it('should render regular links', async () => {
+    await testTransform(
+      /*eslint-disable quotemark*/
+      '<a href="https://www.dspace.com">DSpace</a>',
+      '<a href="https://www.dspace.com">DSpace</a>'
+      /* eslint-enable quotemark */
+    );
+  });
+
+  it('should not render javascript links', async () => {
+    await testTransform(
+      /*eslint-disable quotemark*/
+      '<a href="javascript:window.alert(\'bingo!\');">exploit</a>',
+      '<a>exploit</a>'
+      /* eslint-enable quotemark */
+    );
+  });
+
+  async function testTransform(input: string, output: string) {
+    expect(
+      await markdownPipe.transform(input)
+    ).toMatch(
+      new RegExp('.*' + output + '.*')
+    );
+  }
+});