108 lines
2.8 KiB
TypeScript
108 lines
2.8 KiB
TypeScript
/**
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* @license
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* Copyright 2026 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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import assert from 'node:assert';
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export interface CapturedFunctionCall {
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name: string;
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args: Record<string, unknown>;
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}
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export class Result {
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private nextCallIndex = 0;
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public readonly calls: CapturedFunctionCall[];
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public readonly serverArgs: string[];
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constructor(calls: CapturedFunctionCall[], serverArgs: string[]) {
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this.calls = calls;
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this.serverArgs = serverArgs;
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}
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get hasPageIdRouting(): boolean {
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return this.serverArgs.includes('--experimental-page-id-routing');
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}
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get remainingCalls(): CapturedFunctionCall[] {
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return this.calls.slice(this.nextCallIndex);
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}
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/**
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* Consumes initial page navigation/setup boilerplate.
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* - Ignores/skips leading list_pages calls.
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* - Asserts that new_page or navigate_page was called.
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* - Determines the expected pageId.
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* - Returns the active pageId.
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*/
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consumePageNavigation(): number | undefined {
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if (this.calls[this.nextCallIndex]?.name === 'list_pages') {
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this.nextCallIndex++;
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}
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const navCall = this.calls[this.nextCallIndex];
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assert.ok(
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navCall &&
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(navCall.name === 'new_page' || navCall.name === 'navigate_page'),
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`Expected navigation call (new_page or navigate_page), but got: ${navCall?.name || 'none'}`,
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);
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this.nextCallIndex++;
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const isNewPage = navCall.name === 'new_page';
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let pageId: number | undefined;
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if (this.hasPageIdRouting) {
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pageId = isNewPage ? 2 : 1;
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}
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return pageId;
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}
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/**
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* Asserts that the next call in sequence has the correct name and matches expected arguments.
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* Increments the internal call index.
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*/
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assertNextCall(
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name: string,
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expectedArgs?: Record<string, unknown>,
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): CapturedFunctionCall {
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const call = this.calls[this.nextCallIndex];
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assert.ok(
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call,
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`Expected call at index ${this.nextCallIndex} (name: '${name}') to exist`,
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);
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assert.strictEqual(
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call.name,
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name,
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`Expected call at index ${this.nextCallIndex} to be '${name}', but got '${call.name}'`,
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);
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if (expectedArgs) {
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for (const entry of Object.entries(expectedArgs)) {
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const key = entry[0];
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const value = entry[1];
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assert.deepStrictEqual(
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call.args[key],
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value,
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`Expected argument '${key}' on call '${name}' to be ${JSON.stringify(value)}, got ${JSON.stringify(call.args[key])}`,
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);
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}
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}
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this.nextCallIndex++;
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return call;
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}
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}
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export interface TestScenario {
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prompt: string;
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maxTurns: number;
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expectations: (result: Result) => void;
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htmlRoute?: {
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path: string;
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htmlContent: string;
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};
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/** Extra CLI flags passed to the MCP server (e.g. '--experimental-page-id-routing'). */
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serverArgs?: string[];
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}
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