test: Polyfill tests like the server does

Signed-off-by: Ferdinand Thiessen <[email protected]>

package.json

@@ -83,6 +83,7 @@
     "@vue/test-utils": "^1.3.6",
     "@vue/tsconfig": "^0.5.1",
     "@zamiell/typedoc-plugin-not-exported": "^0.3.0",
+    "core-js": "^3.39.0",
     "gettext-extractor": "^3.8.0",
     "gettext-parser": "^8.0.0",
     "happy-dom": "^14.12.3",

test/setup.ts

@@ -0,0 +1,7 @@
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: CC0-1.0
+ */
+
+// Polyfill like the server does
+import 'core-js/stable/index.js'

vite.config.ts

@@ -31,29 +31,6 @@ export default defineConfig((env) => {
 				// Fix for vite config, TODO: remove with next release
 				cssCodeSplit: false,
 			},
-			// vitest configuration
-			test: {
-				environment: 'happy-dom',
-				coverage: {
-					all: true,
-					provider: 'v8',
-					include: ['lib/**/*.ts', 'lib/*.ts'],
-					exclude: ['lib/**/*.spec.ts'],
-				},
-				css: {
-					modules: {
-						classNameStrategy: 'non-scoped',
-					},
-				},
-				server: {
-					deps: {
-						inline: [
-							/@nextcloud\/vue/, // Fix unresolvable .css extension for ssr
-							/@nextcloud\/files/, // Fix CommonJS cancelable-promise not supporting named exports
-						],
-					},
-				},
-			},
 		},
 		// We build for ESM and legacy common js
 		libraryFormats: ['es', 'cjs'],

vitest.config.ts

@@ -3,11 +3,41 @@
  * SPDX-License-Identifier: CC0-1.0
  */
 import type { ConfigEnv } from 'vite'
+import { defineConfig, type ViteUserConfig } from 'vitest/config'
 import config from './vite.config'
 
-export default async (env: ConfigEnv) => {
+export default defineConfig(async (env: ConfigEnv): Promise<ViteUserConfig> => {
 	const cfg = await config(env)
-	// filter node-externals which will interfere with vitest
-	cfg.plugins = cfg.plugins!.filter((plugin) => plugin && (!('name' in plugin) || plugin.name !== 'node-externals'))
-	return cfg
-}
+
+	return {
+		...cfg,
+
+		// filter node-externals which will interfere with vitest
+		plugins: cfg.plugins!.filter((plugin) => plugin && (!('name' in plugin) || plugin.name !== 'node-externals')),
+
+		// vitest configuration
+		test: {
+			environment: 'happy-dom',
+			coverage: {
+				all: true,
+				provider: 'v8',
+				include: ['lib/**/*.ts', 'lib/*.ts'],
+				exclude: ['lib/**/*.spec.ts'],
+			},
+			css: {
+				modules: {
+					classNameStrategy: 'non-scoped',
+				},
+			},
+			setupFiles: 'test/setup.ts',
+			server: {
+				deps: {
+					inline: [
+						/@nextcloud\/vue/, // Fix unresolvable .css extension for ssr
+						/@nextcloud\/files/, // Fix CommonJS cancelable-promise not supporting named exports
+					],
+				},
+			},
+		},
+	}
+})