snapshot of https://github.com/shadcn-ui/ui.git (main, 2026-09-15; blobs > 131072B omitted)

apps/v4/app/(app)/(create)/lib/v0.test.ts

@@ -0,0 +1,137 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest"
+
+import { DEFAULT_CONFIG } from "@/registry/config"
+import { buildV0Payload } from "@/app/(app)/(create)/lib/v0"
+
+vi.mock("shadcn/schema", async () => {
+  return await vi.importActual("shadcn/schema")
+})
+
+vi.mock("shadcn/utils", async () => {
+  const actual = (await vi.importActual("shadcn/utils")) as {
+    transformFont: unknown
+  }
+
+  return {
+    transformFont: actual.transformFont,
+    transformIcons: async ({ sourceFile }: { sourceFile: unknown }) =>
+      sourceFile,
+    transformMenu: async ({ sourceFile }: { sourceFile: unknown }) =>
+      sourceFile,
+    transformRender: async ({ sourceFile }: { sourceFile: unknown }) =>
+      sourceFile,
+  }
+})
+
+vi.mock("@/registry/bases/__index__", () => ({
+  Index: {
+    base: {
+      card: {
+        name: "card",
+        type: "registry:ui",
+      },
+    },
+    radix: {
+      card: {
+        name: "card",
+        type: "registry:ui",
+      },
+    },
+  },
+}))
+
+vi.mock("@/app/(app)/(create)/lib/api", () => ({
+  getItemsForBase: vi.fn(async () => [{ name: "button", type: "registry:ui" }]),
+}))
+
+describe("buildV0Payload", () => {
+  beforeEach(() => {
+    process.env.NEXT_PUBLIC_APP_URL = "http://example.test"
+
+    vi.stubGlobal(
+      "fetch",
+      vi.fn(async (input: string | URL | Request) => {
+        const url =
+          typeof input === "string"
+            ? input
+            : input instanceof URL
+              ? input.toString()
+              : input.url
+        const name = url.split("/").pop()?.replace(".json", "") ?? "component"
+
+        return new Response(
+          JSON.stringify({
+            name,
+            type: "registry:ui",
+            files: [
+              {
+                path: `registry/base-nova/ui/${name}.tsx`,
+                type: "registry:ui",
+                content: `import * as React from "react"\n\nexport function Component() {\n  return <div className="cn-font-heading text-xl" />\n}\n`,
+              },
+            ],
+          }),
+          {
+            status: 200,
+            headers: {
+              "Content-Type": "application/json",
+            },
+          }
+        )
+      })
+    )
+  })
+
+  afterEach(() => {
+    vi.unstubAllGlobals()
+    delete process.env.NEXT_PUBLIC_APP_URL
+  })
+
+  it("rewrites cn-font-heading to font-heading when heading inherits the body font", async () => {
+    const payload = await buildV0Payload({
+      ...DEFAULT_CONFIG,
+      item: undefined,
+      fontHeading: "inherit",
+    })
+
+    const cardFile = payload.files?.find(
+      (file) => file.target === "components/ui/card.tsx"
+    )
+
+    expect(cardFile?.content).toContain("font-heading")
+    expect(cardFile?.content).not.toContain("cn-font-heading")
+  })
+
+  it("rewrites cn-font-heading to font-heading when a distinct heading font is selected", async () => {
+    const payload = await buildV0Payload({
+      ...DEFAULT_CONFIG,
+      item: undefined,
+      fontHeading: "playfair-display",
+    })
+
+    const cardFile = payload.files?.find(
+      (file) => file.target === "components/ui/card.tsx"
+    )
+
+    expect(cardFile?.content).toContain("font-heading")
+    expect(cardFile?.content).not.toContain("cn-font-heading")
+  })
+
+  it("rejects an item that is not in the base's allowed set", async () => {
+    await expect(
+      buildV0Payload({
+        ...DEFAULT_CONFIG,
+        item: "../../evil",
+      })
+    ).rejects.toThrow(/Unknown item/)
+  })
+
+  it("does not reject a valid item as unknown", async () => {
+    await expect(
+      buildV0Payload({
+        ...DEFAULT_CONFIG,
+        item: "button",
+      })
+    ).resolves.toBeDefined()
+  })
+})