feat: added support for adding plurality to ingredients

lib/measurements/__tests__/plugin.test.js

@@ -518,4 +518,98 @@ describe('density with approximate values', () => {
     expect(weightAttrs.length).toBe(1);
     expect(weightAttrs[0].weightDefault).toMatch(/^~/);
   });
+});
+
+// ─── Count Noun Pluralization ───────────────────────────────
+
+describe('count noun pluralization', () => {
+  it('generates noun span for known singular noun', () => {
+    const html = render('- onion 1');
+    expect(html).toContain('class="count-noun"');
+    expect(html).toContain('data-singular="onion"');
+    expect(html).toContain('data-plural="onions"');
+  });
+
+  it('generates noun span for known plural noun', () => {
+    const html = render('- eggs 3');
+    expect(html).toContain('class="count-noun"');
+    expect(html).toContain('data-singular="egg"');
+    expect(html).toContain('data-plural="eggs"');
+  });
+
+  it('displays singular form when count is 1', () => {
+    const html = render('- onion 1');
+    expect(html).toMatch(/<span class="count-noun"[^>]*>onion<\/span>/);
+  });
+
+  it('displays plural form when count is not 1', () => {
+    const html = render('- egg 3');
+    expect(html).toMatch(/<span class="count-noun"[^>]*>eggs<\/span>/);
+  });
+
+  it('displays plural form when count is 0', () => {
+    const html = render('- egg 0');
+    expect(html).toMatch(/<span class="count-noun"[^>]*>eggs<\/span>/);
+  });
+
+  it('uses max value for ranges (plural)', () => {
+    const html = render('- onion 1-2');
+    // max value is 2 -> plural
+    expect(html).toMatch(/<span class="count-noun"[^>]*>onions<\/span>/);
+  });
+
+  it('adds data-has-noun on the count measurement span', () => {
+    const html = render('- onion 1');
+    expect(html).toContain('data-has-noun="true"');
+  });
+
+  it('does not add data-has-noun for unknown nouns', () => {
+    const html = render('- toaster 1');
+    expect(html).not.toContain('data-has-noun');
+    expect(html).not.toContain('count-noun');
+  });
+
+  it('handles multi-word nouns like bell pepper', () => {
+    const html = render('- bell pepper 2');
+    expect(html).toContain('data-singular="bell pepper"');
+    expect(html).toContain('data-plural="bell peppers"');
+    expect(html).toMatch(/<span class="count-noun"[^>]*>bell peppers<\/span>/);
+  });
+
+  it('handles multi-word nouns like egg yolk', () => {
+    const html = render('- egg yolk 1');
+    expect(html).toContain('data-singular="egg yolk"');
+    expect(html).toMatch(/<span class="count-noun"[^>]*>egg yolk<\/span>/);
+  });
+
+  it('corrects plural to singular for count 1', () => {
+    const html = render('- eggs 1');
+    expect(html).toMatch(/<span class="count-noun"[^>]*>egg<\/span>/);
+  });
+
+  it('corrects singular to plural for count > 1', () => {
+    const html = render('- onion 4');
+    expect(html).toMatch(/<span class="count-noun"[^>]*>onions<\/span>/);
+  });
+
+  it('works in tools section', () => {
+    const md = [
+      '## Ingredients',
+      '- egg 2',
+    ].join('\n');
+    const html = render(md);
+    expect(html).toContain('class="count-noun"');
+    expect(html).toMatch(/<span class="count-noun"[^>]*>eggs<\/span>/);
+  });
+
+  it('preserves text before the noun', () => {
+    const html = render('- white onion 1');
+    // "white " should appear before the noun span
+    expect(html).toMatch(/white <span class="count-noun"/);
+  });
+
+  it('does not generate noun span for non-count measurements', () => {
+    const html = render('- onion 200g');
+    expect(html).not.toContain('count-noun');
+  });
 });