test: enhance matcher to support empty cells

Author: hanna-skryl

testing/test-setup/src/lib/extend/markdown-table.matcher.ts

@@ -19,9 +19,9 @@ function assertMarkdownTableRow(
     .filter(line => line.startsWith('|') && line.endsWith('|'))
     .map(line =>
       line
+        .slice(1, -1)
         .split(/(?<!\\)\|/)
-        .map(cell => cell.replace(/\\\|/g, '|').trim())
-        .filter(Boolean),
+        .map(cell => cell.replace(/\\\|/g, '|').trim()),
     );
 
   const pass = rows.some(

testing/test-setup/src/lib/extend/markdown-table.matcher.unit.test.ts

@@ -1,7 +1,7 @@
 import { describe, expect, it } from 'vitest';
 
 describe('markdown-table-matcher', () => {
-  it('should match table rows', () => {
+  it('should match header and data rows in a markdown table', () => {
     const markdown = `
       | 🏷 Category                 | ⭐ Score  | 🛡 Audits |
       | :-------------------------- | :-------: | :-------: |
@@ -15,6 +15,11 @@ describe('markdown-table-matcher', () => {
       '⭐ Score',
       '🛡 Audits',
     ]);
+    expect(markdown).toContainMarkdownTableRow([
+      ':--------------------------',
+      ':-------:',
+      ':-------:',
+    ]);
     expect(markdown).toContainMarkdownTableRow([
       '[Performance](#performance)',
       '🟡 **64**',
@@ -27,7 +32,7 @@ describe('markdown-table-matcher', () => {
     ]);
   });
 
-  it('should match table row with escaped pipe symbols', () => {
+  it('should match table rows containing escaped pipe symbols', () => {
     const markdown = `
       | Package    | Versions                 |
       | :--------- | :----------------------- |
@@ -38,4 +43,18 @@ describe('markdown-table-matcher', () => {
       '`^8.0.0 || ^9.0.0`',
     ]);
   });
+
+  it('should match table rows with an empty cell', () => {
+    const markdown = `
+      |  Severity  | Message                   | Source file           | Line(s) |
+      | :--------: | :------------------------ | :-------------------- | :-----: |
+      | 🚨 _error_ | File size is 20KB too big | \`list.component.ts\` |         |
+    `;
+    expect(markdown).toContainMarkdownTableRow([
+      '🚨 _error_',
+      'File size is 20KB too big',
+      '`list.component.ts`',
+      '',
+    ]);
+  });
 });