import { describe, expect, it } from "vitest";
import { isThinkingPart, retainThoughtSignature } from "../src/providers/google-shared.js";
describe("Google thinking detection (thoughtSignature)", () => {
it("treats part.thought === true as thinking", () => {
expect(isThinkingPart({ thought: true, thoughtSignature: undefined })).toBe(true);
expect(isThinkingPart({ thought: true, thoughtSignature: "opaque-signature" })).toBe(true);
});
it("does not treat thoughtSignature alone as thinking", () => {
expect(isThinkingPart({ thought: undefined, thoughtSignature: "opaque-signature" })).toBe(false);
expect(isThinkingPart({ thought: false, thoughtSignature: "opaque-signature" })).toBe(false);
});
it("does not treat empty/missing signatures as thinking if thought is not set", () => {
expect(isThinkingPart({ thought: undefined, thoughtSignature: undefined })).toBe(false);
expect(isThinkingPart({ thought: false, thoughtSignature: "" })).toBe(false);
});
it("preserves the existing signature when subsequent deltas omit thoughtSignature", () => {
const first = retainThoughtSignature(undefined, "sig-1");
expect(first).toBe("sig-1");
const second = retainThoughtSignature(first, undefined);
expect(second).toBe("sig-1");
const third = retainThoughtSignature(second, "");
expect(third).toBe("sig-1");
});
it("updates the signature when a new non-empty signature arrives", () => {
const updated = retainThoughtSignature("sig-1", "sig-2");
expect(updated).toBe("sig-2");
});
});