Move yarnBerry accomodations into shared file

Author: appsforartists

src/test/cli-options.test.ts

@@ -8,6 +8,7 @@ import * as assert from 'uvu/assert';
 import * as pathlib from 'path';
 import {Agent, Options} from '../cli-options.js';
 import {IS_WINDOWS} from '../util/windows.js';
+import {injectYarnBerryToRig} from './util/yarn-berry.js';
 import {Result} from '../error.js';
 import {WireitTestRig} from './util/test-rig.js';
 import {rigTest} from './util/rig-test.js';
@@ -46,40 +47,7 @@ async function getOptionsResult(
       ]),
     );
 
-    await rig.write({
-      '.yarnrc.yml': `
-        nodeLinker: node-modules
-        yarnPath: ${pathlib.join(
-          process.cwd(),
-          'third_party',
-          '.yarn',
-          'releases',
-          'yarn-4.0.1.cjs',
-        )}
-      `,
-    });
-
-    // `yarn.lock` tells `yarn` that this test is meant to be its own workspace
-    // root, even though there are higher `package.json` files in the file tree.
-    //
-    // This is the `yarn.lock` you get if you initialize `yarn` in an empty
-    // folder.
-    await rig.write({
-      'yarn.lock': `
-        # This file is generated by running "yarn install" inside your project.
-        # Manual changes might be lost - proceed with caution!
-
-        __metadata:
-          version: 8
-          cacheKey: 10c0
-
-        "root-workspace-0b6124@workspace:.":
-          version: 0.0.0-use.local
-          resolution: "root-workspace-0b6124@workspace:."
-          languageName: unknown
-          linkType: soft
-      `,
-    });
+    await injectYarnBerryToRig(rig);
   }
 
   await rig.write({

src/test/util/yarn-berry.ts

@@ -0,0 +1,52 @@
+/**
+ * @license
+ * Copyright 2024 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import * as pathlib from 'path';
+import {dedent} from 'ts-dedent';
+import {WireitTestRig} from './test-rig.js';
+
+type TestEnviron = {
+  rig: WireitTestRig;
+  command: string;
+  extraScripts?: Record<string, string>;
+};
+
+export const injectYarnBerryToRig = async (rig: WireitTestRig) => {
+  await rig.write({
+    '.yarnrc.yml': `
+      nodeLinker: node-modules
+      yarnPath: ${pathlib.join(
+        process.cwd(),
+        'third_party',
+        '.yarn',
+        'releases',
+        'yarn-4.0.1.cjs',
+      )}
+    `,
+  });
+
+  // `yarn.lock` tells `yarn` that this test is meant to be its own workspace
+  // root, even though there are higher `package.json` files in the file tree.
+  //
+  // This is the `yarn.lock` you get if you initialize `yarn` in an empty
+  // folder.
+  await rig.write({
+    'yarn.lock': dedent`
+      # This file is generated by running "yarn install" inside your project.
+      # Manual changes might be lost - proceed with caution!
+
+      __metadata:
+        version: 8
+        cacheKey: 10c0
+
+      "root-workspace-0b6124@workspace:.":
+        version: 0.0.0-use.local
+        resolution: "root-workspace-0b6124@workspace:."
+        languageName: unknown
+        linkType: soft
+    `,
+  });
+};