add failing test case

__tests__/commands/install/workspaces-install.js

@@ -157,6 +157,17 @@ test.concurrent('install should prioritize non workspace dependency at root over
   });
 });
 
+test.concurrent('install should run local install scripts', (): Promise<void> => {
+  return runInstall({}, 'workspaces-install-scripts', async (config): Promise<void> => {
+    expect(await fs.exists(path.join(config.cwd, 'node_modules', 'workspace-3', 'src.js'))).toBe(true);
+    expect(await fs.exists(path.join(config.cwd, 'node_modules', 'workspace-3', 'prepublish.js'))).toBe(true);
+    expect(await fs.exists(path.join(config.cwd, 'node_modules', 'workspace-3', 'prepublishOnly.js'))).toBe(true);
+    expect(await fs.exists(path.join(config.cwd, 'node_modules', 'workspace-3', 'prepare.js'))).toBe(true);
+    expect(await fs.exists(path.join(config.cwd, 'node_modules', 'workspace-3', 'preinstall.js'))).toBe(true);
+    expect(await fs.exists(path.join(config.cwd, 'node_modules', 'workspace-3', 'postinstall.js'))).toBe(true);
+  });
+});
+
 test.concurrent('install should install subedependencies of workspaces', (): Promise<void> => {
   // the tricky part is that isarray is a subdependency of left-pad that is not referenced in the root
   // but another workspace

__tests__/fixtures/install/workspaces-install-scripts/.yarnrc

@@ -0,0 +1 @@
+workspaces-experimental true

__tests__/fixtures/install/workspaces-install-scripts/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "my-project",
+  "private": true,
+  "dependencies": {
+    "left-pad": "1.1.3"
+  },
+  "workspaces": [
+    "packages/*"
+  ]
+}

__tests__/fixtures/install/workspaces-install-scripts/packages/workspace-2/package.json

@@ -0,0 +1,7 @@
+{
+  "name": "workspace-2",
+  "version": "1.0.0",
+  "dependencies": {
+    "workspace-3": "1.0.0"
+  }
+}

__tests__/fixtures/install/workspaces-install-scripts/packages/workspace-3/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "workspace-3",
+  "version": "1.0.0",
+  "scripts": {
+    "prepublish": "cpy src.js prepublish.js",
+    "prepublishOnly": "cpy src.js prepublishOnly.js",
+    "prepare": "cpy src.js prepare.js",
+    "preinstall": "cpy src.js preinstall.js",
+    "postinstall": "cpy src.js postinstall.js"
+  },
+  "dependencies": {
+    "repeat-string": "1.6.1"
+  }
+}