trader may experience drastic loss at the point of order execution due to slippage

liquidation-test-slippage.ts

    ////note: trader may experience drastic loss at the point of order execution due to slippage
    ////note: This test is in the context of JoJo unit test file- liquidation-test.ts-"check position"

    it("trader loss due to slippage and at brink of liquidation", async () => {
      //note: test preparation so that trader1 starts a trade with sufficient deposits
      //note: trader1 withdraw 5000-1885=3115 (1885 is calculated in trade-test.ts with transaction execution price of 29000)
      await context.dealer
        .connect(trader1)
        .requestWithdraw(utils.parseEther("3115"), utils.parseEther("5000"));
      await timeJump(100);
      await context.dealer
        .connect(trader1)
        .executeWithdraw(trader1.address, false);
      await checkCredit(context, trader1.address, "1885", "0");
      //note: price changed against trader1's favor at the time of on-chain approval
      await context.priceSourceList[0].setMarkPrice(utils.parseEther("29000"));
      const risk0 = await context.dealer.getTraderRisk(trader1.address);
      console.log(risk0.netValue.toString());
      await openPosition(
        trader1,
        trader2,
        "1",
        "30000",
        context.perpList[0],
        orderEnv
      );
      expect(await context.dealer.isSafe(trader2.address)).to.be.true;
      expect(await context.dealer.isSafe(trader1.address)).to.be.true;
      await checkBalance(context.perpList[0], trader1.address, "1", "-30015");
      await checkCredit(context, trader1.address, "1885", "0");
      const risk = await context.dealer.getTraderRisk(trader1.address);
      ////note: trader1 net value loss after trade
      const netValueDelta =
        risk.netValue.toString() - risk0.netValue.toString();
      console.log(netValueDelta);
      //log: -1.015e+21 (-1015 USD) trader lost 1015 USD at transaction executed after slippage even though trader is still safe
      expect(risk.netValue).to.equal(risk.maintenanceMargin); //// but trader1's margin of liquidation is already 0!
      await context.priceSourceList[0].setMarkPrice(utils.parseEther("28999")); ////:Tiny price change will trigger liquidation
      expect(await context.dealer.isSafe(trader1.address)).to.be.false;
    });