Pengujian Berbasis Waktu

Mendemonstrasikan penggunaan warpToSlot untuk menguji logika program yang bergantung pada waktu.

Manipulasi Clock Dasar

import { createClient, generateKeyPairSigner } from "@solana/kit";
import { litesvm } from "@solana/kit-plugin-litesvm";
import { signer } from "@solana/kit-plugin-signer";
const mySigner = await generateKeyPairSigner();
const client = createClient().use(signer(mySigner)).use(litesvm());
// Enable sysvars for clock access
client.svm.withSysvars();
// Check initial clock
const initialClock = client.svm.getClock();
console.log("Initial state:");
console.log(" Slot:", initialClock.slot);
console.log(" Epoch:", initialClock.epoch);
console.log(" Unix timestamp:", initialClock.unixTimestamp);
// Warp to slot 1000
client.svm.warpToSlot(1000n);
const afterWarp = client.svm.getClock();
console.log("\nAfter warpToSlot(1000):");
console.log(" Slot:", afterWarp.slot);
console.log(" Epoch:", afterWarp.epoch);
// Warp further
client.svm.warpToSlot(100000n);
const afterWarp2 = client.svm.getClock();
console.log("\nAfter warpToSlot(100000):");
console.log(" Slot:", afterWarp2.slot);
console.log(" Epoch:", afterWarp2.epoch);

Menguji Logika Terkunci Waktu

Contoh pola untuk menguji fungsionalitas terkunci waktu:

import {
createClient,
address,
generateKeyPairSigner,
lamports
} from "@solana/kit";
import { litesvm } from "@solana/kit-plugin-litesvm";
import { signer } from "@solana/kit-plugin-signer";
const mySigner = await generateKeyPairSigner();
const client = createClient().use(signer(mySigner)).use(litesvm());
client.svm.withSigverify(false).withBlockhashCheck(false).withSysvars();
// Fund payer
client.svm.airdrop(client.payer.address, lamports(10_000_000_000n));
// Set up a time-locked vault account
// Structure: [u8 discriminator, u64 unlock_slot, u64 amount]
const unlockSlot = 10000n;
const lockedAmount = 5_000_000_000n;
const vaultData = new Uint8Array(1 + 8 + 8);
const view = new DataView(vaultData.buffer);
vaultData[0] = 0x01; // discriminator
view.setBigUint64(1, unlockSlot, true); // unlock_slot
view.setBigUint64(9, lockedAmount, true); // amount
const programId = address("TimeLockedVault11111111111111111111111"); // replace or generateKeyPairSigner()
const vaultAddress = address("Vault111111111111111111111111111"); // replace or generateKeyPairSigner()
const minBalance = client.svm.minimumBalanceForRentExemption(
BigInt(vaultData.length)
);
client.svm.setAccount({
address: vaultAddress,
data: vaultData,
executable: false,
lamports: lamports(minBalance + lockedAmount),
programAddress: programId,
space: BigInt(vaultData.length)
});
console.log("Vault created with unlock slot:", unlockSlot);
console.log("Locked amount:", Number(lockedAmount) / 1e9, "SOL");
// Test 1: Try to withdraw before unlock (should fail)
console.log("\n--- Test 1: Before unlock ---");
const currentClock = client.svm.getClock();
console.log("Current slot:", currentClock.slot);
// In a real test, you would:
// 1. Build a withdraw instruction
// 2. Send it and expect it to fail
console.log("Withdrawal attempt: EXPECTED TO FAIL (too early)");
// Test 2: Warp to after unlock slot
console.log("\n--- Test 2: After unlock ---");
client.svm.warpToSlot(unlockSlot + 100n);
const newClock = client.svm.getClock();
console.log("Current slot:", newClock.slot);
// In a real test:
// 1. Build a withdraw instruction
// 2. Send it and expect it to succeed
console.log("Withdrawal attempt: EXPECTED TO SUCCEED (after unlock)");
// Verify vault state
const updatedVault = client.svm.getAccount(vaultAddress);
if (updatedVault.exists) {
console.log("\nVault balance:", updatedVault.lamports);
}

Membaca Jadwal Epoch

Anda dapat membaca jadwal epoch untuk memahami hubungan slot/epoch pada kluster:

import { createClient, generateKeyPairSigner } from "@solana/kit";
import { litesvm } from "@solana/kit-plugin-litesvm";
import { signer } from "@solana/kit-plugin-signer";
const mySigner = await generateKeyPairSigner();
const client = createClient().use(signer(mySigner)).use(litesvm());
client.svm.withSysvars();
const epochSchedule = client.svm.getEpochSchedule();
console.log("Slots per epoch:", epochSchedule.slotsPerEpoch);
console.log("First normal epoch:", epochSchedule.firstNormalEpoch);
console.log("First normal slot:", epochSchedule.firstNormalSlot);

warpToSlot memajukan field slot pada clock tetapi tidak secara otomatis memperbarui epoch atau unixTimestamp. Gunakan setClock untuk kontrol penuh atas field clock.

Manipulasi Clock Manual

Ketika program Anda membaca epoch atau unix_timestamp dari Clock sysvar, gunakan setClock untuk mengatur field tersebut secara langsung:

import { createClient, generateKeyPairSigner } from "@solana/kit";
import { litesvm } from "@solana/kit-plugin-litesvm";
import { signer } from "@solana/kit-plugin-signer";
const mySigner = await generateKeyPairSigner();
const client = createClient().use(signer(mySigner)).use(litesvm());
client.svm.withSysvars();
// Get clock, mutate, write back
const clock = client.svm.getClock();
clock.slot = 50000n;
clock.epoch = 5n;
clock.unixTimestamp = 1700000000n;
client.svm.setClock(clock);
const after = client.svm.getClock();
console.log("Slot:", after.slot); // 50000n
console.log("Epoch:", after.epoch); // 5n
console.log("Timestamp:", after.unixTimestamp); // 1700000000n

Ini mencerminkan pola set_sysvar(&clock) di Rust. Gunakan warpToSlot untuk kemajuan slot sederhana, gunakan setClock saat Anda membutuhkan kontrol epoch atau timestamp.

Kasus Penggunaan

Manipulasi waktu berguna untuk menguji:

SkenarioPendekatan
Vesting tokenWarp melewati cliff/milestone vesting
Akhir lelangWarp melewati slot akhir lelang
Hadiah stakingGunakan setClock untuk mengatur epoch
Penarikan terkunci waktuWarp melewati slot pembukaan kunci
Pembatasan lajuWarp di antara interval yang diizinkan
Order kedaluwarsaWarp melewati kedaluwarsa order

Ingat bahwa warpToSlot hanya mengubah slot. Unix timestamp mungkin tidak diperbarui secara proporsional tergantung pada implementasi SVM.

Poin Utama

  1. Aktifkan Sysvar: Panggil withSysvars() sebelum menggunakan metode clock
  2. Maju ke Depan: Gunakan warpToSlot(slot) untuk memajukan slot
  3. Kontrol Penuh: Gunakan setClock saat Anda perlu mengatur epoch, unixTimestamp, atau field clock lainnya
  4. Baca Clock: Gunakan getClock() untuk membaca slot, epoch, timestamp saat ini
  5. Pola Pengujian: Uji sebelum dan sesudah batas waktu

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