import { describe, expect, it, vi } from "vite-plus/test"; import { resolveExternalWebLinkHost, showExternalLinkContextMenu } from "./externalLinkContextMenu"; function createHarness(selection: "open-in-preview" | "open-external" | "copy-link" | null) {  const showContextMenu = vi.fn().mockResolvedValue(selection);  const openInPreview = vi.fn().mockResolvedValue(undefined);  const openExternal = vi.fn().mockResolvedValue(undefined);  const copyLink = vi.fn().mockResolvedValue(undefined);  const reportFailure = vi.fn();   return {    showContextMenu,    openInPreview,    openExternal,    copyLink,    reportFailure,  };} describe("external chat link context menu", () => {  it("offers both open actions and Copy Link", async () => {    const harness = createHarness(null);     await showExternalLinkContextMenu({      href: "https://example.com/docs?topic=menus#copy",      position: { x: 12, y: 24 },      ...harness,    });     expect(harness.showContextMenu).toHaveBeenCalledWith(      [        { id: "open-in-preview", label: "Open in integrated browser" },        { id: "open-external", label: "Open in system browser" },        { id: "copy-link", label: "Copy Link" },      ],      { x: 12, y: 24 },    );    expect(harness.openInPreview).not.toHaveBeenCalled();    expect(harness.openExternal).not.toHaveBeenCalled();    expect(harness.copyLink).not.toHaveBeenCalled();  });   it("copies the exact destination without opening it", async () => {    const harness = createHarness("copy-link");    const href = "https://example.com/docs?topic=menus#copy";     await showExternalLinkContextMenu({ href, position: { x: 1, y: 2 }, ...harness });     expect(harness.copyLink).toHaveBeenCalledWith(href);    expect(harness.openInPreview).not.toHaveBeenCalled();    expect(harness.openExternal).not.toHaveBeenCalled();  });   it.each([    ["open-in-preview" as const, "openInPreview" as const],    ["open-external" as const, "openExternal" as const],  ])("preserves the %s action", async (selection, expectedCallback) => {    const harness = createHarness(selection);    const href = "https://example.com/docs";     await showExternalLinkContextMenu({ href, position: { x: 1, y: 2 }, ...harness });     expect(harness[expectedCallback]).toHaveBeenCalledWith(href);    expect(harness.copyLink).not.toHaveBeenCalled();  });   it("reports the selected action when it fails", async () => {    const harness = createHarness("copy-link");    const cause = new Error("clipboard denied");    harness.copyLink.mockRejectedValue(cause);     await showExternalLinkContextMenu({      href: "https://example.com/docs",      position: { x: 1, y: 2 },      ...harness,    });     expect(harness.reportFailure).toHaveBeenCalledWith("copy-link", cause);  });   it("reports the menu operation when the native menu cannot be shown", async () => {    const harness = createHarness(null);    const cause = new Error("menu unavailable");    harness.showContextMenu.mockRejectedValue(cause);     await showExternalLinkContextMenu({      href: "https://example.com/docs",      position: { x: 1, y: 2 },      ...harness,    });     expect(harness.reportFailure).toHaveBeenCalledWith("show-link-context-menu", cause);    expect(harness.openInPreview).not.toHaveBeenCalled();    expect(harness.openExternal).not.toHaveBeenCalled();    expect(harness.copyLink).not.toHaveBeenCalled();  });   it.each([    ["open-in-preview" as const, "openInPreview" as const, "open-link-in-preview"],    ["open-external" as const, "openExternal" as const, "open-link-external"],  ])("reports a failed %s action", async (selection, callback, operation) => {    const harness = createHarness(selection);    const cause = new Error("open failed");    harness[callback].mockRejectedValue(cause);     await showExternalLinkContextMenu({      href: "https://example.com/docs",      position: { x: 1, y: 2 },      ...harness,    });     expect(harness.reportFailure).toHaveBeenCalledWith(operation, cause);  });   it.each([    ["https://example.com", "example.com"],    ["http://localhost:3000/path", "localhost"],    ["#details", null],    ["mailto:hello@example.com", null],    ["file:///tmp/example.txt", null],    ["javascript:void(0)", null],    ["not a URL", null],    [undefined, null],  ])("resolves the external web-link host for %s as %s", (href, expected) => {    expect(resolveExternalWebLinkHost(href)).toBe(expected);  });});