From 3986c091549c2975b5191e3762f5bd8b5457a2b1 Mon Sep 17 00:00:00 2001
From: gsxdsm <gsxdsm@users.noreply.github.com>
Date: Mon, 18 May 2026 02:47:51 -0700
Subject: [PATCH] =?UTF-8?q?test(FN-4951):=20complete=20Step=202=20?=
 =?UTF-8?q?=E2=80=94=20add=20clipboard=20utility=20tests?=
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Fusion-Task-Id: FN-4951
Fusion-Task-Lineage: 25de66db-c8cf-463b-86f2-efff1bc22683
---
 .../utils/__tests__/copyToClipboard.test.ts   | 77 +++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 packages/dashboard/app/utils/__tests__/copyToClipboard.test.ts

diff --git a/packages/dashboard/app/utils/__tests__/copyToClipboard.test.ts b/packages/dashboard/app/utils/__tests__/copyToClipboard.test.ts
new file mode 100644
index 000000000..724fa93b5
--- /dev/null
+++ b/packages/dashboard/app/utils/__tests__/copyToClipboard.test.ts
@@ -0,0 +1,77 @@
+import { afterEach, describe, expect, it, vi } from "vitest";
+
+import { copyTextToClipboard } from "../copyToClipboard";
+
+describe("copyTextToClipboard", () => {
+  const originalClipboard = navigator.clipboard;
+
+  afterEach(() => {
+    Object.defineProperty(navigator, "clipboard", {
+      configurable: true,
+      value: originalClipboard,
+    });
+    vi.restoreAllMocks();
+    document.body.innerHTML = "";
+  });
+
+  it("uses Clipboard API when available", async () => {
+    const writeText = vi.fn().mockResolvedValue(undefined);
+    Object.defineProperty(navigator, "clipboard", {
+      configurable: true,
+      value: { writeText },
+    });
+
+    await expect(copyTextToClipboard("abc123")).resolves.toBe(true);
+    expect(writeText).toHaveBeenCalledWith("abc123");
+  });
+
+  it("falls back to execCommand when Clipboard API is unavailable", async () => {
+    Object.defineProperty(navigator, "clipboard", {
+      configurable: true,
+      value: undefined,
+    });
+    const execSpy = vi.spyOn(document, "execCommand").mockReturnValue(true);
+
+    await expect(copyTextToClipboard("fallback")).resolves.toBe(true);
+    expect(execSpy).toHaveBeenCalledWith("copy");
+  });
+
+  it("falls back to execCommand when Clipboard API rejects", async () => {
+    const writeText = vi.fn().mockRejectedValue(new Error("NotAllowedError"));
+    Object.defineProperty(navigator, "clipboard", {
+      configurable: true,
+      value: { writeText },
+    });
+    const execSpy = vi.spyOn(document, "execCommand").mockReturnValue(false);
+
+    await expect(copyTextToClipboard("reject-path")).resolves.toBe(false);
+    expect(writeText).toHaveBeenCalledWith("reject-path");
+    expect(execSpy).toHaveBeenCalledWith("copy");
+  });
+
+  it("returns false when both clipboard and fallback fail", async () => {
+    Object.defineProperty(navigator, "clipboard", {
+      configurable: true,
+      value: undefined,
+    });
+    vi.spyOn(document, "execCommand").mockReturnValue(false);
+
+    await expect(copyTextToClipboard("nope")).resolves.toBe(false);
+  });
+
+  it("removes temporary textarea after fallback attempts", async () => {
+    Object.defineProperty(navigator, "clipboard", {
+      configurable: true,
+      value: undefined,
+    });
+
+    const execSpy = vi.spyOn(document, "execCommand").mockReturnValue(true);
+    await copyTextToClipboard("cleanup-success");
+    expect(execSpy).toHaveBeenCalledWith("copy");
+    expect(document.querySelector("textarea")).toBeNull();
+
+    execSpy.mockReturnValueOnce(false);
+    await copyTextToClipboard("cleanup-failure");
+    expect(document.querySelector("textarea")).toBeNull();
+  });
+});