import { describe, expect, it } from "vitest"; import { buildBootstrapInput } from "./historyBootstrap"; describe("buildBootstrapInput", () => {  it("includes full transcript when under budget", () => {    const result = buildBootstrapInput(      [        {          id: "u-1",          role: "user",          text: "hello",          createdAt: "2026-02-09T00:00:00.000Z",          streaming: false,        },        {          id: "a-1",          role: "assistant",          text: "world",          createdAt: "2026-02-09T00:00:01.000Z",          streaming: false,        },      ],      "what's next?",      1_500,    );     expect(result.includedCount).toBe(2);    expect(result.omittedCount).toBe(0);    expect(result.truncated).toBe(false);    expect(result.text).toContain("USER:\nhello");    expect(result.text).toContain("ASSISTANT:\nworld");    expect(result.text).toContain("Latest user request (answer this now):");    expect(result.text).toContain("what's next?");  });   it("truncates older transcript messages when over budget", () => {    const result = buildBootstrapInput(      [        {          id: "u-1",          role: "user",          text: "first question with details",          createdAt: "2026-02-09T00:00:00.000Z",          streaming: false,        },        {          id: "a-1",          role: "assistant",          text: "first answer with details",          createdAt: "2026-02-09T00:00:01.000Z",          streaming: false,        },        {          id: "u-2",          role: "user",          text: "second question with details",          createdAt: "2026-02-09T00:00:02.000Z",          streaming: false,        },      ],      "final request",      320,    );     expect(result.truncated).toBe(true);    expect(result.omittedCount).toBeGreaterThan(0);    expect(result.includedCount).toBeLessThan(3);    expect(result.text).toContain("omitted to stay within input limits");    expect(result.text.length).toBeLessThanOrEqual(320);  });   it("preserves the latest prompt when prompt-only fallback is required", () => {    const latestPrompt = "Please keep this exact latest prompt.";    const result = buildBootstrapInput(      [        {          id: "u-1",          role: "user",          text: "old context",          createdAt: "2026-02-09T00:00:00.000Z",          streaming: false,        },      ],      latestPrompt,      latestPrompt.length + 3,    );     expect(result.text).toBe(latestPrompt);    expect(result.includedCount).toBe(0);    expect(result.omittedCount).toBe(1);    expect(result.truncated).toBe(true);  });   it("captures user image attachment context in transcript blocks", () => {    const result = buildBootstrapInput(      [        {          id: "u-image",          role: "user",          text: "",          attachments: [            {              type: "image",              id: "img-1",              name: "screenshot.png",              mimeType: "image/png",              sizeBytes: 2_048,            },          ],          createdAt: "2026-02-09T00:00:00.000Z",          streaming: false,        },      ],      "What does this error mean?",      1_500,    );     expect(result.text).toContain("Attached image");    expect(result.text).toContain("screenshot.png");  });});