pumpfun-swap-sdk/dist/__tests__/sell.spec.js

SDK for interacting with the PumpFun AMM on Solana

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const chai = require('chai');
const { expect } = chai;
const bn_js_1 = __importDefault(require("bn.js"));
const sell_1 = require("../sdk/sell");
describe('sellBaseInput', () => {
    it('should compute final quote and minQuote correctly with typical inputs', () => {
        // Example pool reserves
        const baseReserve = new bn_js_1.default(1000000); // base tokens in pool
        const quoteReserve = new bn_js_1.default(2000000); // quote tokens in pool
        // The user wants to sell 50,000 base tokens
        const base = new bn_js_1.default(50000);
        // Slippage = 1% => the user will accept at least 99% of finalQuote
        const slippage = 1;
        // Fees (in BPS)
        // e.g. 30 => 0.30%, 20 => 0.20%
        const lpFeeBps = new bn_js_1.default(30);
        const protocolFeeBps = new bn_js_1.default(20);
        const result = (0, sell_1.sellBaseInputInternal)(base, slippage, baseReserve, quoteReserve, lpFeeBps, protocolFeeBps);
        console.log('Final quote received:', result.uiQuote.toString());
        console.log('Min quote after slippage:', result.minQuote.toString());
        // Replace these placeholder values with the actual results once you confirm them offline:
        // For example, if you do the math manually or from a reference, set them here:
        const expectedFinalQuote = new bn_js_1.default(94761); // Example placeholder
        const expectedMinQuote = new bn_js_1.default(93813); // Example placeholder
        expect(result.uiQuote.toString()).to.equal(expectedFinalQuote.toString(), 'Incorrect final quote');
        expect(result.minQuote.toString()).to.equal(expectedMinQuote.toString(), 'Incorrect min quote');
    });
    it("should throw an error if 'base' is zero", () => {
        const base = new bn_js_1.default(0);
        const baseReserve = new bn_js_1.default(1000000);
        const quoteReserve = new bn_js_1.default(2000000);
        const slippage = 1;
        const lpFeeBps = new bn_js_1.default(30);
        const protocolFeeBps = new bn_js_1.default(20);
        expect(() => (0, sell_1.sellBaseInputInternal)(base, slippage, baseReserve, quoteReserve, lpFeeBps, protocolFeeBps)).to.throw("Invalid input: 'base' (base_amount_in) cannot be zero.");
    });
    it("should throw an error if 'baseReserve' or 'quoteReserve' is zero", () => {
        const slippage = 1;
        const lpFeeBps = new bn_js_1.default(30);
        const protocolFeeBps = new bn_js_1.default(20);
        // baseReserve = 0
        expect(() => (0, sell_1.sellBaseInputInternal)(new bn_js_1.default(1000), slippage, new bn_js_1.default(0), new bn_js_1.default(2000000), lpFeeBps, protocolFeeBps)).to.throw("Invalid input: 'baseReserve' or 'quoteReserve' cannot be zero.");
        // quoteReserve = 0
        expect(() => (0, sell_1.sellBaseInputInternal)(new bn_js_1.default(1000), slippage, new bn_js_1.default(1000000), new bn_js_1.default(0), lpFeeBps, protocolFeeBps)).to.throw("Invalid input: 'baseReserve' or 'quoteReserve' cannot be zero.");
    });
    it('should throw an error if lpFeeBps or protocolFeeBps is negative', () => {
        const base = new bn_js_1.default(10000);
        const baseReserve = new bn_js_1.default(1000000);
        const quoteReserve = new bn_js_1.default(2000000);
        const slippage = 1;
        expect(() => (0, sell_1.sellBaseInputInternal)(base, slippage, baseReserve, quoteReserve, new bn_js_1.default(-1), new bn_js_1.default(20))).to.throw('Fee basis points cannot be negative.');
        expect(() => (0, sell_1.sellBaseInputInternal)(base, slippage, baseReserve, quoteReserve, new bn_js_1.default(30), new bn_js_1.default(-5))).to.throw('Fee basis points cannot be negative.');
    });
    it('should throw an error if fees exceed total output (finalQuote negative)', () => {
        // We want quoteAmountOut > 0 but finalQuote < 0 after subtracting fees.
        const base = new bn_js_1.default(1);
        const baseReserve = new bn_js_1.default(1);
        const quoteReserve = new bn_js_1.default(2);
        const slippage = 1;
        // Large fees (90% + 20% = 110% total) will exceed quoteAmountOut=1
        const lpFeeBps = new bn_js_1.default(9000); // 90%
        const protocolFeeBps = new bn_js_1.default(2000); // 20%
        expect(() => (0, sell_1.sellBaseInputInternal)(base, slippage, baseReserve, quoteReserve, lpFeeBps, protocolFeeBps)).to.throw('Fees exceed total output; final quote is negative.');
    });
});