import { Schema } from "effect";import { describe, expect, it } from "vite-plus/test"; import {  DiscoveredLocalServer,  PreviewEvent,  PreviewNavStatus,  PreviewSessionSnapshot,} from "./preview.ts"; const decodePreviewEvent = Schema.decodeUnknownSync(PreviewEvent);const decodeSnapshot = Schema.decodeUnknownSync(PreviewSessionSnapshot);const decodeNavStatus = Schema.decodeUnknownSync(PreviewNavStatus);const decodeServer = Schema.decodeUnknownSync(DiscoveredLocalServer); describe("PreviewNavStatus", () => {  it("decodes Idle", () => {    expect(decodeNavStatus({ _tag: "Idle" })).toEqual({ _tag: "Idle" });  });   it("decodes Loading with title", () => {    expect(decodeNavStatus({ _tag: "Loading", url: "http://localhost:5173/", title: "" })).toEqual({      _tag: "Loading",      url: "http://localhost:5173/",      title: "",    });  });   it("decodes LoadFailed with code/description", () => {    expect(      decodeNavStatus({        _tag: "LoadFailed",        url: "https://example.com/",        title: "Example",        code: -105,        description: "ERR_NAME_NOT_RESOLVED",      }),    ).toEqual({      _tag: "LoadFailed",      url: "https://example.com/",      title: "Example",      code: -105,      description: "ERR_NAME_NOT_RESOLVED",    });  });   it("rejects empty url", () => {    expect(() => decodeNavStatus({ _tag: "Loading", url: "", title: "" })).toThrow();  });}); describe("PreviewSessionSnapshot", () => {  it("round-trips a Success snapshot", () => {    const snapshot = decodeSnapshot({      threadId: "thread-1",      tabId: "preview-thread-1",      navStatus: {        _tag: "Success",        url: "http://localhost:5173/",        title: "Vite App",      },      canGoBack: false,      canGoForward: false,      updatedAt: "2026-01-01T00:00:00.000Z",    });    expect(snapshot.tabId).toBe("preview-thread-1");    expect(snapshot.navStatus._tag).toBe("Success");  });}); describe("PreviewEvent", () => {  it("decodes opened", () => {    const event = decodePreviewEvent({      type: "opened",      threadId: "t",      tabId: "preview-t",      createdAt: "2026-01-01T00:00:00.000Z",      snapshot: {        threadId: "t",        tabId: "preview-t",        navStatus: { _tag: "Idle" },        canGoBack: false,        canGoForward: false,        updatedAt: "2026-01-01T00:00:00.000Z",      },    });    expect(event.type).toBe("opened");  });   it("decodes failed with code/description", () => {    const event = decodePreviewEvent({      type: "failed",      threadId: "t",      tabId: "preview-t",      createdAt: "2026-01-01T00:00:00.000Z",      url: "https://example.com/",      title: "",      code: -105,      description: "ERR_NAME_NOT_RESOLVED",    });    expect(event.type).toBe("failed");    if (event.type === "failed") {      expect(event.code).toBe(-105);    }  });   it("decodes closed without snapshot", () => {    const event = decodePreviewEvent({      type: "closed",      threadId: "t",      tabId: "preview-t",      createdAt: "2026-01-01T00:00:00.000Z",    });    expect(event.type).toBe("closed");  });}); describe("DiscoveredLocalServer", () => {  it("decodes a server with process metadata", () => {    const server = decodeServer({      host: "localhost",      port: 5173,      url: "http://localhost:5173",      processName: "node",      pid: 12345,      terminal: null,    });    expect(server.port).toBe(5173);    expect(server.processName).toBe("node");  });   it("decodes a server without process metadata", () => {    const server = decodeServer({      host: "localhost",      port: 3000,      url: "http://localhost:3000",      processName: null,      pid: null,      terminal: null,    });    expect(server.processName).toBeNull();  });   it("rejects invalid ports", () => {    expect(() =>      decodeServer({        host: "localhost",        port: 0,        url: "http://localhost:0",        processName: null,        pid: null,        terminal: null,      }),    ).toThrow();    expect(() =>      decodeServer({        host: "localhost",        port: 70000,        url: "http://localhost:70000",        processName: null,        pid: null,        terminal: null,      }),    ).toThrow();  });});