test: Clone comments tests

Author: Jeroen Langeveld

tests/frontmatter/comments.test.ts

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+import { compareFiles } from 'tests/common';
+import { describe, expect, it } from 'vitest';
+
+describe('Comments', () => {
+  it('should handle comments', () => {
+    const { actual, expected } = compareFiles(__dirname, {
+      formatOptions: { pugCommentPreserveSpaces: 'trim-all' },
+    });
+    expect(actual).toBe(expected);
+  });
+});

tests/frontmatter/formatted.pug

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+// just some paragraphs
+p foo
+p bar
+  //- will not output within markup
+  p foo
+  p bar
+div
+  //-
+    Comments for your template writers.
+    Use as much text as you want.
+  //
+    Comments for your HTML readers.
+    Use as much text as you want.
+div
+  //- Indented comment
+  span Test
+    // Indented comment
+    span Test
+
+  //- Indented comment
+  span Test

tests/frontmatter/unformatted.pug

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+//   just   some   paragraphs
+p foo
+p bar
+  //- will   not  output  within markup
+  p foo
+  p bar
+div
+  //-
+    Comments   for   your   template   writers.
+    Use as  much text   as you want.
+  //
+    Comments for   your HTML readers.
+    Use as   much text as you want.
+div
+  //- Indented comment
+  span Test
+    // Indented comment
+    span Test
+
+
+
+  //- Indented comment
+  span Test