1 files changed, 31 insertions, 0 deletions
diff --git a/packages/astro/test/content-layer.test.js b/packages/astro/test/content-layer.test.js
index 225025b30..10d7790ff 100644
--- a/packages/astro/test/content-layer.test.js
+++ b/packages/astro/test/content-layer.test.js
@@ -467,6 +467,37 @@ describe('Content Layer', () => {
 			await fixture.resetAllFiles();
 		});
 
+		it('removes old entry when slug is changed', async () => {
+			const rawJsonResponse = await fixture.fetch('/collections.json');
+			const initialJson = devalue.parse(await rawJsonResponse.text());
+
+			assert.ok(initialJson.spacecraft.includes('exomars'));
+			assert.ok(!initialJson.spacecraft.includes('rosalind-franklin-rover'));
+
+			await fixture.editFile('/src/content/space/exomars.md', (prev) => {
+				return prev.replace('# slug', 'slug');
+			});
+
+			await fixture.onNextDataStoreChange();
+			const updatedJsonResponse = await fixture.fetch('/collections.json');
+			const updated = devalue.parse(await updatedJsonResponse.text());
+			assert.ok(!updated.spacecraft.includes('exomars'));
+			assert.ok(updated.spacecraft.includes('rosalind-franklin-rover'));
+
+			await fixture.editFile('/src/content/space/exomars.md', (prev) => {
+				return prev.replace('rosalind-franklin-rover', 'rosalind-franklin');
+			})
+
+			await fixture.onNextDataStoreChange();
+			const updatedJsonResponse2 = await fixture.fetch('/collections.json');
+			const updated2 = devalue.parse(await updatedJsonResponse2.text());
+			assert.ok(!updated2.spacecraft.includes('rosalind-franklin-rover'));
+			assert.ok(updated2.spacecraft.includes('rosalind-franklin'));
+			
+			await fixture.resetAllFiles();
+
+		});
+
 		it('returns an error if we render an undefined entry', async () => {
 			const res = await fixture.fetch('/missing');
 			const text = await res.text();