Initial commit: Add MathHomeworkHelper project with web and Android components
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342
tests.html
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342
tests.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Math Homework Helper - Unit Tests</title>
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<style>
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body {
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font-family: 'Segoe UI', 'Roboto', 'Arial', sans-serif;
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background: #f5f5f5;
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padding: 20px;
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max-width: 1000px;
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margin: 0 auto;
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}
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.test-container {
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background: white;
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border-radius: 10px;
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padding: 20px;
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margin-bottom: 20px;
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box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
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}
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.test-title {
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font-size: 1.5em;
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font-weight: bold;
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margin-bottom: 20px;
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color: #2563eb;
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}
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.test-case {
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margin-bottom: 15px;
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padding: 10px;
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border-left: 4px solid #ddd;
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background: #f9f9f9;
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}
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.test-case.pass {
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border-left-color: #16a34a;
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background: #f0fdf4;
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}
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.test-case.fail {
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border-left-color: #dc2626;
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background: #fef2f2;
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}
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.test-name {
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font-weight: bold;
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margin-bottom: 5px;
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}
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.test-result {
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font-size: 0.9em;
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color: #666;
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}
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.pass-text {
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color: #16a34a;
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font-weight: bold;
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}
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.fail-text {
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color: #dc2626;
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font-weight: bold;
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}
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.summary {
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font-size: 1.2em;
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font-weight: bold;
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padding: 15px;
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border-radius: 5px;
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margin-top: 20px;
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}
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.summary.all-pass {
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background: #dcfce7;
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color: #16a34a;
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}
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.summary.some-fail {
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background: #fee2e2;
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color: #dc2626;
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}
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</style>
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</head>
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<body>
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<h1>🧪 Math Homework Helper - Unit Tests</h1>
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<div id="test-results"></div>
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<script>
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// Test Framework
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class TestRunner {
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constructor() {
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this.tests = [];
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this.passed = 0;
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this.failed = 0;
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}
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test(name, fn) {
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try {
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fn();
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this.tests.push({ name, status: 'pass', error: null });
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this.passed++;
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} catch (error) {
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this.tests.push({ name, status: 'fail', error: error.message });
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this.failed++;
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}
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}
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assert(condition, message) {
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if (!condition) {
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throw new Error(message || 'Assertion failed');
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}
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}
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assertEqual(actual, expected, message) {
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if (actual !== expected) {
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throw new Error(message || `Expected ${expected}, got ${actual}`);
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}
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}
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render() {
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const resultsDiv = document.getElementById('test-results');
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let html = '';
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// Test cases
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this.tests.forEach(test => {
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const className = test.status === 'pass' ? 'pass' : 'fail';
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const statusText = test.status === 'pass'
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? '<span class="pass-text">✓ PASS</span>'
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: '<span class="fail-text">✗ FAIL</span>';
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html += `
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<div class="test-case ${className}">
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<div class="test-name">${test.name}</div>
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<div class="test-result">${statusText}${test.error ? ': ' + test.error : ''}</div>
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</div>
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`;
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});
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// Summary
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const totalTests = this.passed + this.failed;
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const summaryClass = this.failed === 0 ? 'all-pass' : 'some-fail';
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const summaryText = this.failed === 0
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? `✓ All ${totalTests} tests passed!`
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: `✗ ${this.failed} of ${totalTests} tests failed`;
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html += `<div class="summary ${summaryClass}">${summaryText}</div>`;
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resultsDiv.innerHTML = `
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<div class="test-container">
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<div class="test-title">Test Results</div>
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${html}
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</div>
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`;
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}
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}
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// Initialize test runner
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const runner = new TestRunner();
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// ============================================
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// UNIT TESTS
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// ============================================
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// Test 1: getRandomNumber function
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runner.test('getRandomNumber generates number within range', () => {
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// Mock function since we need to test the logic
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const getRandomNumber = (min, max) => Math.floor(Math.random() * (max - min + 1)) + min;
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for (let i = 0; i < 100; i++) {
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const num = getRandomNumber(1, 9);
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runner.assert(num >= 1 && num <= 9, `Random number ${num} out of range [1, 9]`);
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}
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});
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// Test 2: calculateIntermediateSteps for 23 × 45
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runner.test('calculateIntermediateSteps calculates correct partial products', () => {
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const calculateIntermediateSteps = (num1, num2) => {
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const num2Str = num2.toString();
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const steps = [];
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for (let i = num2Str.length - 1; i >= 0; i--) {
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const digit = parseInt(num2Str[i]);
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const partialProduct = num1 * digit;
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const shiftAmount = num2Str.length - 1 - i;
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steps.push({ digit, product: partialProduct, shift: shiftAmount });
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}
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return steps;
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};
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const steps = calculateIntermediateSteps(23, 45);
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runner.assertEqual(steps.length, 2, 'Should have 2 steps for 2-digit multiplicand');
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runner.assertEqual(steps[0].product, 115, 'First step: 23 × 5 = 115');
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runner.assertEqual(steps[0].shift, 0, 'First step shift should be 0');
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runner.assertEqual(steps[1].product, 92, 'Second step: 23 × 4 = 92');
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runner.assertEqual(steps[1].shift, 1, 'Second step shift should be 1');
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});
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// Test 3: findIncorrectDigits function
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runner.test('findIncorrectDigits identifies wrong digits correctly', () => {
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const findIncorrectDigits = (userAnswer, correctAnswer) => {
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const userStr = userAnswer.toString();
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const correctStr = correctAnswer.toString();
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const incorrectPositions = [];
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const maxLen = Math.max(userStr.length, correctStr.length);
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const userPadded = userStr.padStart(maxLen, '0');
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const correctPadded = correctStr.padStart(maxLen, '0');
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for (let i = 0; i < maxLen; i++) {
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if (userPadded[i] !== correctPadded[i]) {
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incorrectPositions.push(i);
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}
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}
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return incorrectPositions;
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};
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const incorrect = findIncorrectDigits(123, 125);
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runner.assertEqual(incorrect.length, 1, 'Should find 1 incorrect digit');
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runner.assertEqual(incorrect[0], 2, 'Incorrect digit at position 2');
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});
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// Test 4: Point calculation - correct answer
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runner.test('Correct answer adds 1 point', () => {
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let points = 0;
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const userAnswer = 72;
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const correctAnswer = 72;
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if (userAnswer === correctAnswer) {
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points += 1;
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}
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runner.assertEqual(points, 1, 'Should add 1 point for correct answer');
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});
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// Test 5: Point calculation - incorrect answer
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runner.test('Incorrect answer subtracts 2 points (minimum 0)', () => {
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let points = 5;
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const userAnswer = 70;
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const correctAnswer = 72;
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if (userAnswer !== correctAnswer) {
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points = Math.max(0, points - 2);
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}
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runner.assertEqual(points, 3, 'Should subtract 2 points for incorrect answer');
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});
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// Test 6: Point calculation - incorrect answer with 0 points
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runner.test('Points cannot go below 0', () => {
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let points = 1;
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const userAnswer = 70;
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const correctAnswer = 72;
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if (userAnswer !== correctAnswer) {
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points = Math.max(0, points - 2);
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}
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runner.assertEqual(points, 0, 'Points should not go below 0');
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});
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// Test 7: Victory condition
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runner.test('Victory triggered at 20 points', () => {
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let points = 19;
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let victory = false;
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points += 1;
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if (points >= 20) {
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victory = true;
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}
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runner.assert(victory, 'Victory should be triggered at 20 points');
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});
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// Test 8: Difficulty configuration
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runner.test('Difficulty levels have correct configurations', () => {
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const difficultyConfig = {
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1: { num1Min: 1, num1Max: 9, num2Min: 1, num2Max: 9 },
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2: { num1Min: 10, num1Max: 99, num2Min: 1, num2Max: 9 },
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3: { num1Min: 10, num1Max: 99, num2Min: 10, num2Max: 99 },
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4: { num1Min: 100, num1Max: 999, num2Min: 10, num2Max: 99 },
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5: { num1Min: 10000, num1Max: 99999, num2Min: 100, num2Max: 999 }
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};
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runner.assertEqual(difficultyConfig[1].num1Max, 9, 'Level 1: num1Max should be 9');
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runner.assertEqual(difficultyConfig[2].num2Max, 9, 'Level 2: num2Max should be 9');
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runner.assertEqual(difficultyConfig[3].num2Min, 10, 'Level 3: num2Min should be 10');
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runner.assertEqual(difficultyConfig[5].num1Max, 99999, 'Level 5: num1Max should be 99999');
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});
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// Test 9: Intermediate steps only for 2+ digit multiplicand
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runner.test('Intermediate steps skipped for 1-digit multiplicand', () => {
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const num2 = 7; // 1-digit
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const shouldShowIntermediateSteps = num2 > 9;
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runner.assert(!shouldShowIntermediateSteps, 'Should not show intermediate steps for 1-digit multiplicand');
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});
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// Test 10: Intermediate steps shown for 2+ digit multiplicand
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runner.test('Intermediate steps shown for 2+ digit multiplicand', () => {
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const num2 = 45; // 2-digit
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const shouldShowIntermediateSteps = num2 > 9;
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runner.assert(shouldShowIntermediateSteps, 'Should show intermediate steps for 2+ digit multiplicand');
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});
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// Test 11: Multiplication result calculation
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runner.test('Multiplication result calculated correctly', () => {
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const num1 = 23;
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const num2 = 45;
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const result = num1 * num2;
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runner.assertEqual(result, 1035, '23 × 45 should equal 1035');
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});
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// Test 12: Intermediate step verification
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runner.test('Intermediate step verification detects errors', () => {
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const userStepValue = '115';
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const correctStepNum = 115;
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const isCorrect = parseInt(userStepValue) === correctStepNum;
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runner.assert(isCorrect, 'Intermediate step should be verified correctly');
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});
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// Test 13: Intermediate step verification - incorrect
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runner.test('Intermediate step verification detects incorrect values', () => {
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const userStepValue = '116';
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const correctStepNum = 115;
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const isCorrect = parseInt(userStepValue) === correctStepNum;
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runner.assert(!isCorrect, 'Incorrect intermediate step should be detected');
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});
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// Test 14: Answer validation - empty answer
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runner.test('Empty answer is rejected', () => {
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const answer = '';
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const isValid = answer !== '';
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runner.assert(!isValid, 'Empty answer should be invalid');
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});
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// Test 15: Answer validation - valid answer
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runner.test('Valid numeric answer is accepted', () => {
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const answer = '72';
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const isValid = answer !== '' && !isNaN(parseInt(answer));
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runner.assert(isValid, 'Valid numeric answer should be accepted');
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});
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// Render results
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runner.render();
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</script>
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</body>
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</html>
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