#!/usr/bin/env node
/**
* Direct test script for the random selection functionality.
*/
// Function to randomly select card IDs (same as implemented in the server)
function getRandomCardIds(cardIds, count) {
if (count >= cardIds.length) {
return cardIds;
}
const shuffled = [...cardIds];
for (let i = shuffled.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
[shuffled[i], shuffled[j]] = [shuffled[j], shuffled[i]];
}
return shuffled.slice(0, count);
}
// Test with a mock array of card IDs
function testRandomSelection() {
// Create a mock array of 300 card IDs (similar to your real data)
const mockCardIds = Array.from({ length: 300 }, (_, i) => 1000000 + i);
console.log(`Total number of mock card IDs: ${mockCardIds.length}`);
// Test with count=10
const randomCardIds10 = getRandomCardIds(mockCardIds, 10);
console.log(`\nSelected ${randomCardIds10.length} random cards (count=10):`);
console.log(randomCardIds10);
// Test with count=5
const randomCardIds5 = getRandomCardIds(mockCardIds, 5);
console.log(`\nSelected ${randomCardIds5.length} random cards (count=5):`);
console.log(randomCardIds5);
// Test with count greater than available cards
const randomCardIds500 = getRandomCardIds(mockCardIds, 500);
console.log(
`\nSelected ${randomCardIds500.length} random cards (count=500):`
);
console.log(`(Returns all cards since count > available cards)`);
// Verify randomness by running multiple selections
console.log("\nVerifying randomness with multiple selections (count=10):");
const selections = [];
for (let i = 0; i < 5; i++) {
selections.push(getRandomCardIds(mockCardIds, 10));
}
// Check if selections are different (a simple way to verify randomness)
let allSame = true;
for (let i = 1; i < selections.length; i++) {
if (!arraysEqual(selections[0], selections[i])) {
allSame = false;
break;
}
}
console.log(
allSame
? "All selections returned the same results (not random)"
: "Different selections returned different results (randomness confirmed)"
);
console.log("\nTest completed successfully.");
}
// Helper function to check if arrays are equal
function arraysEqual(a, b) {
if (a.length !== b.length) return false;
for (let i = 0; i < a.length; i++) {
if (a[i] !== b[i]) return false;
}
return true;
}
// Run the test
testRandomSelection();
