fix: cache collections using file name too

.changeset/tidy-needles-build.md

@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Fixes an issue in content collection caching, where two documents with the same contents were generating an error during the build.

packages/astro/src/core/build/plugins/plugin-content.ts

@@ -40,6 +40,7 @@ interface ContentManifestKey {
 	type: 'content' | 'data';
 	entry: string;
 }
+
 interface ContentManifest {
 	version: number;
 	entries: [ContentManifestKey, string][];
@@ -304,6 +305,7 @@ interface ContentEntries {
 	restoreFromCache: ContentManifestKey[];
 	buildFromSource: ContentManifestKey[];
 }
+
 function getEntriesFromManifests(
 	oldManifest: ContentManifest,
 	newManifest: ContentManifest
@@ -379,7 +381,7 @@ async function generateContentManifest(
 			promises.push(
 				limit(async () => {
 					const data = await fsMod.promises.readFile(fileURL, { encoding: 'utf8' });
-					manifest.entries.push([key, checksum(data)]);
+					manifest.entries.push([key, checksum(data, fileURL.toString())]);
 				})
 			);
 		}

packages/astro/test/experimental-content-collections-cache-invalidation.test.js

@@ -11,21 +11,25 @@ describe('Experimental Content Collections cache - invalidation', () => {
 			this.cacheDir = new URL(relCacheDir, this.root);
 			this.tmpDir = new URL(`./tmp` + relCacheDir.slice(1), this.root);
 		}
+
 		backup() {
 			this.rmTmp();
 			copyFiles(this.cacheDir, this.tmpDir);
 		}
+
 		restore() {
 			fs.rmSync(this.cacheDir, { recursive: true });
 			copyFiles(this.tmpDir, this.cacheDir);
 		}
+
 		rmTmp() {
 			fs.rmSync(this.tmpDir, { force: true, recursive: true });
 		}
 	}
 
 	class ManifestTestPlugin {
 		used = false;
+
 		plugin() {
 			return {
 				name: '@test/manifest-used',
@@ -99,4 +103,35 @@ describe('Experimental Content Collections cache - invalidation', () => {
 			assert.equal(testPlugin.used, false, 'manifest not used because of lockfile mismatch');
 		});
 	});
+
+	describe('duplicate content', () => {
+		let fixture,
+			backup,
+			/** @type {ManifestTestPlugin} */
+			testPlugin;
+		before(async () => {
+			testPlugin = new ManifestTestPlugin();
+			fixture = await loadFixture({
+				root: './fixtures/content-collections-same-contents/',
+				cacheDir: './cache/same-contents/',
+				experimental: { contentCollectionCache: true },
+				integrations: [testPlugin.plugin()],
+			});
+			backup = new CacheBackup(
+				'./fixtures/content-collections-same-contents/',
+				'./cache/same-contents/'
+			);
+			backup.backup();
+			await fixture.build();
+		});
+
+		after(async () => {
+			backup.restore();
+			//await fixture.clean();
+		});
+
+		it('Manifest was not used', () => {
+			assert.equal(testPlugin.used, false, 'manifest not used because of lockfile mismatch');
+		});
+	});
 });

packages/astro/test/fixtures/content-collections-same-contents/astro.config.mjs

@@ -0,0 +1,11 @@
+import {defineConfig} from 'astro/config';
+
+// https://astro.build/config
+export default defineConfig({
+	base: '/docs',
+	vite: {
+		build: {
+			assetsInlineLimit: 0
+		}
+	}
+});

packages/astro/test/fixtures/content-collections-same-contents/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "@test/content-collections-same-contents",
+  "version": "0.0.0",
+  "private": true,
+  "dependencies": {
+    "astro": "workspace:*"
+  }
+}

packages/astro/test/fixtures/content-collections-same-contents/src/content/config.ts

@@ -0,0 +1,12 @@
+import { defineCollection, z } from 'astro:content';
+
+
+const docs = defineCollection({
+	schema: z.object({
+		title: z.string(),
+	}),
+});
+
+export const collections = {
+	docs,
+}

packages/astro/test/fixtures/content-collections-same-contents/src/content/docs/one.md

@@ -0,0 +1,8 @@
+---
+title: One
+---
+
+# Title
+
+stuff
+

packages/astro/test/fixtures/content-collections-same-contents/src/content/docs/two.md

@@ -0,0 +1,7 @@
+---
+title: One
+---
+
+# Title
+
+stuff

packages/astro/test/fixtures/content-collections-same-contents/src/pages/docs.astro

@@ -0,0 +1,17 @@
+---
+import { getEntryBySlug } from 'astro:content';
+const entry = await getEntryBySlug('docs', 'one');
+const { Content } = await entry.render();
+---
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width" />
+    <title>It's content time!</title>
+  </head>
+  <body>
+    <main>
+			<Content />
+    </main>
+  </body>
+</html>