fix: update test coverage

packages/shadcn/test/utils/transform-import.test.ts

@@ -34,6 +34,49 @@ test('transform nested workspace folder for utils, website/src/utils', async ()
 
 })
 
+test.each([
+  {
+    name: "bare aliases",
+    aliases: {
+      components: "components",
+      ui: "components/ui",
+      lib: "lib",
+      utils: "lib/utils",
+    },
+    buttonImport: `import { Button } from "components/ui/button"`,
+    utilsImport: `import { cn } from "lib/utils"`,
+  },
+  {
+    name: "path-like aliases",
+    aliases: {
+      components: "website/src/components",
+      ui: "website/src/components/ui",
+      lib: "website/src/lib",
+      utils: "website/src/lib/utils",
+    },
+    buttonImport: `import { Button } from "website/src/components/ui/button"`,
+    utilsImport: `import { cn } from "website/src/lib/utils"`,
+  },
+])("transform import with non-sigil aliases: $name", async ({
+  aliases,
+  buttonImport,
+  utilsImport,
+}) => {
+  const result = await transform({
+    filename: "test.ts",
+    raw: `import { Button } from "@/registry/new-york/ui/button"
+import { cn } from "@/lib/utils"
+`,
+    config: {
+      tsx: true,
+      aliases,
+    },
+  })
+
+  expect(result).toContain(buttonImport)
+  expect(result).toContain(utilsImport)
+})
+
 test("transform import", async () => {
   expect(
     await transform({

packages/tests/fixtures/vite-monorepo-imports/apps/web/components.json

@@ -0,0 +1,18 @@
+{
+  "style": "new-york",
+  "tailwind": {
+    "config": "",
+    "css": "../../packages/ui/src/styles/globals.css",
+    "baseColor": "zinc",
+    "cssVariables": true
+  },
+  "rsc": false,
+  "tsx": true,
+  "aliases": {
+    "components": "#components",
+    "ui": "@workspace/ui/components",
+    "lib": "#lib",
+    "hooks": "#hooks",
+    "utils": "@workspace/ui/lib/utils"
+  }
+}

packages/tests/fixtures/vite-monorepo-imports/apps/web/package.json

@@ -0,0 +1,12 @@
+{
+  "name": "web",
+  "private": true,
+  "type": "module",
+  "imports": {
+    "#*": "./src/*"
+  },
+  "dependencies": {
+    "@workspace/ui": "workspace:*",
+    "tailwindcss": "^4.2.1"
+  }
+}

packages/tests/fixtures/vite-monorepo-imports/apps/web/src/main.tsx

@@ -0,0 +1 @@
+console.log("web")

packages/tests/fixtures/vite-monorepo-imports/apps/web/tsconfig.json

@@ -0,0 +1,8 @@
+{
+  "compilerOptions": {
+    "module": "esnext",
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "resolvePackageJsonImports": true
+  }
+}

packages/tests/fixtures/vite-monorepo-imports/apps/web/vite.config.ts

@@ -0,0 +1,3 @@
+import { defineConfig } from "vite"
+
+export default defineConfig({})

packages/tests/fixtures/vite-monorepo-imports/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "vite-monorepo-imports",
+  "private": true,
+  "packageManager": "pnpm@10.0.0",
+  "workspaces": ["apps/*", "packages/*"]
+}

packages/tests/fixtures/vite-monorepo-imports/packages/ui/components.json

@@ -0,0 +1,18 @@
+{
+  "style": "new-york",
+  "tailwind": {
+    "config": "",
+    "css": "src/styles/globals.css",
+    "baseColor": "zinc",
+    "cssVariables": true
+  },
+  "rsc": false,
+  "tsx": true,
+  "aliases": {
+    "components": "#components",
+    "ui": "#components",
+    "lib": "#lib",
+    "hooks": "#hooks",
+    "utils": "#lib/utils"
+  }
+}

packages/tests/fixtures/vite-monorepo-imports/packages/ui/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "@workspace/ui",
+  "private": true,
+  "type": "module",
+  "imports": {
+    "#*": "./src/*"
+  },
+  "exports": {
+    "./globals.css": "./src/styles/globals.css",
+    "./components/*": "./src/components/*.tsx",
+    "./lib/*": "./src/lib/*.ts",
+    "./hooks/*": "./src/hooks/*.ts"
+  }
+}

packages/tests/fixtures/vite-monorepo-imports/packages/ui/src/lib/utils.ts

@@ -0,0 +1,3 @@
+export function cn(...classes: Array<string | false | null | undefined>) {
+  return classes.filter(Boolean).join(" ")
+}

packages/tests/fixtures/vite-monorepo-imports/packages/ui/src/styles/globals.css

@@ -0,0 +1 @@
+@import "tailwindcss";

packages/tests/fixtures/vite-monorepo-imports/packages/ui/tsconfig.json

@@ -0,0 +1,8 @@
+{
+  "compilerOptions": {
+    "module": "esnext",
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "resolvePackageJsonImports": true
+  }
+}

packages/tests/fixtures/vite-monorepo-imports/pnpm-workspace.yaml

@@ -0,0 +1,3 @@
+packages:
+  - apps/*
+  - packages/*

packages/tests/src/tests/add.test.ts

@@ -166,6 +166,39 @@ describe("shadcn add", () => {
     ).toBe("Foo Bar")
   })
 
+  it("should preview add changes without writing files", async () => {
+    const fixturePath = await createFixtureTestDirectory("next-app-init")
+
+    const result = await npxShadcn(fixturePath, ["add", "button", "--dry-run"])
+
+    expect(result.exitCode).toBe(0)
+    expect(result.stdout).toContain("shadcn add button (dry run)")
+    expect(result.stdout).toContain("components/ui/button.tsx")
+    expect(result.stdout).toContain("Run without --dry-run to apply.")
+    expect(
+      await fs.pathExists(path.join(fixturePath, "components/ui/button.tsx"))
+    ).toBe(false)
+  })
+
+  it("should show no changes for identical files with diff", async () => {
+    const fixturePath = await createFixtureTestDirectory("next-app-init")
+
+    await npxShadcn(fixturePath, ["add", "button", "--yes"])
+
+    const result = await npxShadcn(fixturePath, [
+      "add",
+      "button",
+      "--diff",
+      "button",
+      "--yes",
+    ])
+
+    expect(result.exitCode).toBe(0)
+    expect(result.stdout).toContain("shadcn add button (dry run)")
+    expect(result.stdout).toContain("components/ui/button.tsx (skip)")
+    expect(result.stdout).toContain("No changes.")
+  })
+
   it("should add item with target to src", async () => {
     const fixturePath = await createFixtureTestDirectory("vite-app")
     await npxShadcn(fixturePath, ["init", "--defaults"])
@@ -230,6 +263,97 @@ describe("shadcn add", () => {
     `)
   })
 
+  it("should add monorepo components and rewrite app-local imports with package imports", async () => {
+    const fixturePath = await createFixtureTestDirectory("vite-monorepo-imports")
+
+    const result = await npxShadcn(
+      fixturePath,
+      ["add", "login-03", "-c", "apps/web", "--yes"],
+      { timeout: 300000 }
+    )
+
+    expect(result.exitCode).toBe(0)
+
+    expect(
+      await fs.pathExists(
+        path.join(fixturePath, "apps/web/src/components/login-form.tsx")
+      )
+    ).toBe(true)
+    expect(
+      await fs.pathExists(
+        path.join(fixturePath, "packages/ui/src/components/button.tsx")
+      )
+    ).toBe(true)
+    expect(
+      await fs.pathExists(
+        path.join(fixturePath, "apps/web/src/components/ui/button.tsx")
+      )
+    ).toBe(false)
+
+    const loginFormContent = await fs.readFile(
+      path.join(fixturePath, "apps/web/src/components/login-form.tsx"),
+      "utf-8"
+    )
+    expect(loginFormContent).toContain(
+      'import { cn } from "@workspace/ui/lib/utils"'
+    )
+    expect(loginFormContent).toContain(
+      'import { Button } from "@workspace/ui/components/button"'
+    )
+
+    const buttonContent = await fs.readFile(
+      path.join(fixturePath, "packages/ui/src/components/button.tsx"),
+      "utf-8"
+    )
+    expect(buttonContent).toContain('import { cn } from "#lib/utils.ts"')
+  }, 300000)
+
+  it("should preview monorepo adds without writing files", async () => {
+    const fixturePath = await createFixtureTestDirectory("vite-monorepo-imports")
+
+    const result = await npxShadcn(
+      fixturePath,
+      ["add", "login-03", "-c", "apps/web", "--dry-run", "--yes"],
+      { timeout: 300000 }
+    )
+
+    expect(result.exitCode).toBe(0)
+    expect(result.stdout).toContain("shadcn add login-03 (dry run)")
+    expect(result.stdout).toContain("../../packages/ui/src/components/button.tsx")
+    expect(result.stdout).toContain("src/components/login-form.tsx")
+    expect(
+      await fs.pathExists(
+        path.join(fixturePath, "apps/web/src/components/login-form.tsx")
+      )
+    ).toBe(false)
+    expect(
+      await fs.pathExists(
+        path.join(fixturePath, "packages/ui/src/components/button.tsx")
+      )
+    ).toBe(false)
+  }, 300000)
+
+  it("should show no changes for identical monorepo files with diff", async () => {
+    const fixturePath = await createFixtureTestDirectory("vite-monorepo-imports")
+
+    await npxShadcn(
+      fixturePath,
+      ["add", "login-03", "-c", "apps/web", "--yes"],
+      { timeout: 300000 }
+    )
+
+    const result = await npxShadcn(
+      fixturePath,
+      ["add", "login-03", "-c", "apps/web", "--diff", "login-form", "--yes"],
+      { timeout: 300000 }
+    )
+
+    expect(result.exitCode).toBe(0)
+    expect(result.stdout).toContain("shadcn add login-03 (dry run)")
+    expect(result.stdout).toContain("src/components/login-form.tsx (skip)")
+    expect(result.stdout).toContain("No changes.")
+  }, 300000)
+
   it("should add NOT update existing envVars", async () => {
     const fixturePath = await createFixtureTestDirectory("next-app")
     await npxShadcn(fixturePath, ["init", "--defaults"])