ci: deploy demo automatically

tests/unit/infra/deploy-demo-workflow.test.ts

@@ -0,0 +1,46 @@
+import { existsSync, readFileSync } from "node:fs";
+import path from "node:path";
+import { describe, expect, it } from "vitest";
+
+const workflowPath = path.resolve(process.cwd(), ".github/workflows/deploy-demo.yml");
+
+function workflowText(): string {
+  expect(existsSync(workflowPath)).toBe(true);
+  return readFileSync(workflowPath, "utf8");
+}
+
+describe("demo deployment workflow", () => {
+  it("deploys the demo app to the Cloudflare Pages demo project", () => {
+    const workflow = workflowText();
+
+    expect(workflow).toContain("name: Deploy Demo to Cloudflare Pages");
+    expect(workflow).toContain("pnpm --filter @snapotter/demo build");
+    expect(workflow).toContain(
+      "npx wrangler pages deploy apps/demo/dist --project-name snapotter-demo --branch main --commit-dirty=true",
+    );
+    expect(workflow).toContain("CLOUDFLARE_API_TOKEN: $" + "{{ secrets.CLOUDFLARE_API_TOKEN }}");
+    expect(workflow).toContain("CLOUDFLARE_ACCOUNT_ID: $" + "{{ secrets.CLOUDFLARE_ACCOUNT_ID }}");
+  });
+
+  it("rebuilds when the demo shell, real app UI, shared code, or build inputs change", () => {
+    const workflow = workflowText();
+
+    for (const pathFilter of [
+      '"apps/demo/**"',
+      '"apps/web/**"',
+      '"packages/shared/**"',
+      '"package.json"',
+      '"pnpm-lock.yaml"',
+      '"pnpm-workspace.yaml"',
+      '".github/actions/setup/**"',
+      '".github/workflows/deploy-demo.yml"',
+    ]) {
+      expect(workflow).toContain(pathFilter);
+    }
+
+    expect(workflow).toContain("branches: [main]");
+    expect(workflow).toContain("workflow_dispatch:");
+    expect(workflow).toContain("concurrency:");
+    expect(workflow).toContain("group: deploy-demo");
+  });
+});