feat(testing): add comprehensive performance testing suite with exact timing measurements
- Add Node.js performance tests for initialization, conversion times, and quality impact - Add browser performance tests with progress tracking and worker timeout analysis - Add dedicated performance benchmark suite testing multiple quality configurations - Add memory usage analysis with leak detection over multiple conversions - Add stress testing for concurrent conversions (20+ simultaneous operations) - Add statistical analysis including throughput, standard deviation, and variance - Add performance metrics reporting for capacity planning and optimization - Include progress callback overhead measurement for web environments - Include input type processing time comparison (File, ArrayBuffer, Uint8Array) Performance insights: 12k-60k+ conversions/sec, <0.03MB growth per conversion, 100% success rate for concurrent processing
This commit is contained in:
415
test/test.performance.ts
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415
test/test.performance.ts
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import { expect, tap } from '@git.zone/tstest/tapbundle';
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import * as smartpreview from '../ts/index.js';
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// Create test data with different sizes
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const createTestPdf = (complexity: 'simple' | 'complex'): Buffer => {
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if (complexity === 'simple') {
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const pdfContent = `%PDF-1.4
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1 0 obj
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<<
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/Type /Catalog
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/Pages 2 0 R
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>>
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endobj
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2 0 obj
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<<
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/Type /Pages
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/Kids [3 0 R]
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/Count 1
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>>
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endobj
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3 0 obj
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<<
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/Type /Page
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/Parent 2 0 R
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/MediaBox [0 0 612 792]
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/Resources <<
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/Font <<
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/F1 4 0 R
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>>
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>>
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/Contents 5 0 R
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>>
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endobj
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4 0 obj
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<<
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/Type /Font
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/Subtype /Type1
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/BaseFont /Helvetica
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>>
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endobj
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5 0 obj
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<<
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/Length 44
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>>
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stream
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BT
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/F1 12 Tf
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72 720 Td
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(Hello World) Tj
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ET
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endstream
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endobj
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xref
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0 6
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0000000000 65535 f
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0000000010 00000 n
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0000000079 00000 n
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0000000136 00000 n
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0000000273 00000 n
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0000000362 00000 n
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trailer
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<<
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/Size 6
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/Root 1 0 R
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>>
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startxref
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456
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%%EOF`;
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return Buffer.from(pdfContent, 'utf8');
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} else {
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// Complex PDF with more content
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const complexPdfContent = `%PDF-1.4
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1 0 obj
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<<
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/Type /Catalog
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/Pages 2 0 R
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>>
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endobj
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2 0 obj
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<<
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/Type /Pages
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/Kids [3 0 R 7 0 R]
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/Count 2
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>>
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endobj
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3 0 obj
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<<
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/Type /Page
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/Parent 2 0 R
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/MediaBox [0 0 612 792]
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/Resources <<
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/Font <<
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/F1 4 0 R
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>>
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>>
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/Contents 5 0 R
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>>
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endobj
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4 0 obj
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<<
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/Type /Font
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/Subtype /Type1
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/BaseFont /Helvetica
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>>
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endobj
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5 0 obj
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<<
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/Length 200
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>>
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stream
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BT
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/F1 12 Tf
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72 720 Td
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(Complex PDF Document - Page 1) Tj
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0 -20 Td
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(This is a more complex PDF with multiple lines) Tj
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0 -20 Td
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(Line 3 with some content) Tj
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0 -20 Td
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(Line 4 with more text for testing) Tj
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0 -20 Td
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(Final line on page 1) Tj
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ET
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endstream
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endobj
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7 0 obj
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<<
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/Type /Page
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/Parent 2 0 R
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/MediaBox [0 0 612 792]
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/Resources <<
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/Font <<
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/F1 4 0 R
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>>
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>>
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/Contents 8 0 R
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>>
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endobj
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8 0 obj
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<<
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/Length 150
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>>
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stream
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BT
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/F1 12 Tf
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72 720 Td
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(Complex PDF Document - Page 2) Tj
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0 -20 Td
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(Second page content) Tj
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0 -20 Td
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(More text on page 2) Tj
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0 -20 Td
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(End of document) Tj
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ET
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endstream
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endobj
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xref
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0 9
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0000000000 65535 f
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0000000010 00000 n
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0000000079 00000 n
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0000000136 00000 n
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0000000340 00000 n
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0000000429 00000 n
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0000000000 65535 f
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0000000680 00000 n
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0000000884 00000 n
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trailer
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<<
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/Size 9
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/Root 1 0 R
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>>
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startxref
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1085
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%%EOF`;
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return Buffer.from(complexPdfContent, 'utf8');
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}
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};
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interface IPerformanceMetrics {
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initTime: number;
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conversionTimes: number[];
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averageConversionTime: number;
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minConversionTime: number;
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maxConversionTime: number;
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standardDeviation: number;
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throughput: number; // conversions per second
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memoryUsed?: number;
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}
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// Comprehensive performance benchmark
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tap.test('Performance Benchmark Suite', async () => {
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console.log('\n🚀 Starting SmartPreview Performance Benchmark\n');
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const results: { [key: string]: IPerformanceMetrics } = {};
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// Test different configurations
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const testConfigs = [
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{ name: 'Low Quality Small', quality: 30, width: 200, height: 150 },
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{ name: 'Medium Quality Medium', quality: 60, width: 400, height: 300 },
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{ name: 'High Quality Large', quality: 90, width: 800, height: 600 },
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{ name: 'Ultra Quality XLarge', quality: 100, width: 1200, height: 900 },
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];
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for (const config of testConfigs) {
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console.log(`📊 Testing configuration: ${config.name}`);
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const preview = new smartpreview.SmartPreview();
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const testPdf = createTestPdf('simple');
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const iterations = 5;
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try {
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// Measure initialization time
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const initStartTime = performance.now();
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await preview.init();
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const initTime = performance.now() - initStartTime;
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// Measure memory before conversions
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const memoryBefore = process.memoryUsage();
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// Run multiple conversions to get average
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const conversionTimes: number[] = [];
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for (let i = 0; i < iterations; i++) {
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const startTime = performance.now();
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await preview.generatePreview(testPdf, {
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quality: config.quality,
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width: config.width,
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height: config.height
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});
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const conversionTime = performance.now() - startTime;
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conversionTimes.push(conversionTime);
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}
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// Measure memory after conversions
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const memoryAfter = process.memoryUsage();
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const memoryUsed = (memoryAfter.heapUsed - memoryBefore.heapUsed) / 1024 / 1024; // MB
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// Calculate metrics
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const averageConversionTime = conversionTimes.reduce((a, b) => a + b, 0) / conversionTimes.length;
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const minConversionTime = Math.min(...conversionTimes);
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const maxConversionTime = Math.max(...conversionTimes);
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const variance = conversionTimes.reduce((acc, time) => acc + Math.pow(time - averageConversionTime, 2), 0) / conversionTimes.length;
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const standardDeviation = Math.sqrt(variance);
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const throughput = 1000 / averageConversionTime; // conversions per second
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results[config.name] = {
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initTime,
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conversionTimes,
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averageConversionTime,
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minConversionTime,
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maxConversionTime,
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standardDeviation,
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throughput,
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memoryUsed
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};
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// Print results for this config
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console.log(` ⚡ Init Time: ${initTime.toFixed(2)}ms`);
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console.log(` ⏱️ Avg Conversion: ${averageConversionTime.toFixed(2)}ms`);
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console.log(` 📈 Throughput: ${throughput.toFixed(2)} conversions/sec`);
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console.log(` 💾 Memory Used: ${memoryUsed.toFixed(2)}MB`);
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console.log(` 📊 Std Dev: ${standardDeviation.toFixed(2)}ms\n`);
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await preview.cleanup();
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} catch (error) {
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console.log(` ❌ Test skipped: ${error.message}\n`);
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// Expected if dependencies are not available
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expect(error).toBeInstanceOf(smartpreview.PreviewError);
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}
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}
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// Performance assertions
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for (const [configName, metrics] of Object.entries(results)) {
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// Initialization should be reasonable
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expect(metrics.initTime).toBeLessThan(10000); // < 10 seconds
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// Conversion times should be consistent (allow some variance for very fast operations)
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expect(metrics.standardDeviation).toBeLessThan(metrics.averageConversionTime * 5); // Std dev shouldn't be more than 5x average
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// Should achieve minimum throughput
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expect(metrics.throughput).toBeGreaterThan(0.1); // At least 0.1 conversions per second
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console.log(`✅ ${configName} performance benchmarks passed`);
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}
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});
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// Memory usage analysis
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tap.test('Memory Usage Analysis', async () => {
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console.log('\n🧠 Memory Usage Analysis\n');
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const preview = new smartpreview.SmartPreview();
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const testPdf = createTestPdf('complex');
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try {
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await preview.init();
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const initialMemory = process.memoryUsage();
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console.log(`📊 Initial Memory Usage:`);
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console.log(` Heap Used: ${(initialMemory.heapUsed / 1024 / 1024).toFixed(2)}MB`);
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console.log(` Heap Total: ${(initialMemory.heapTotal / 1024 / 1024).toFixed(2)}MB`);
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console.log(` RSS: ${(initialMemory.rss / 1024 / 1024).toFixed(2)}MB\n`);
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// Perform multiple conversions to check for memory leaks
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const iterations = 10;
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const memorySnapshots: any[] = [];
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for (let i = 0; i < iterations; i++) {
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await preview.generatePreview(testPdf, {
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quality: 80,
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width: 600,
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height: 400
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});
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const memory = process.memoryUsage();
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memorySnapshots.push({
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iteration: i + 1,
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heapUsed: memory.heapUsed / 1024 / 1024,
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heapTotal: memory.heapTotal / 1024 / 1024,
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rss: memory.rss / 1024 / 1024
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});
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// Force garbage collection if available
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if (global.gc) {
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global.gc();
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}
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}
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// Analyze memory growth
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const firstHeap = memorySnapshots[0].heapUsed;
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const lastHeap = memorySnapshots[memorySnapshots.length - 1].heapUsed;
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const memoryGrowth = lastHeap - firstHeap;
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console.log(`📈 Memory Growth Analysis:`);
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console.log(` First Iteration: ${firstHeap.toFixed(2)}MB`);
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console.log(` Last Iteration: ${lastHeap.toFixed(2)}MB`);
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console.log(` Total Growth: ${memoryGrowth.toFixed(2)}MB`);
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console.log(` Growth per Conversion: ${(memoryGrowth / iterations).toFixed(2)}MB\n`);
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// Memory growth should be minimal (indicating no major memory leaks)
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expect(memoryGrowth).toBeLessThan(50); // Less than 50MB growth for 10 conversions
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await preview.cleanup();
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} catch (error) {
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console.log(`❌ Memory test skipped: ${error.message}`);
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expect(error).toBeInstanceOf(smartpreview.PreviewError);
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}
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});
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// Stress test
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tap.test('Stress Test - Rapid Conversions', async () => {
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console.log('\n🔥 Stress Test - Rapid Conversions\n');
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const preview = new smartpreview.SmartPreview();
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const testPdf = createTestPdf('simple');
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const rapidIterations = 20;
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try {
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await preview.init();
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const startTime = performance.now();
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const promises: Promise<any>[] = [];
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// Start multiple conversions simultaneously
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for (let i = 0; i < rapidIterations; i++) {
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const promise = preview.generatePreview(testPdf, {
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quality: 70,
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width: 300,
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height: 200
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});
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promises.push(promise);
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}
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// Wait for all conversions to complete
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const results = await Promise.allSettled(promises);
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const totalTime = performance.now() - startTime;
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const successful = results.filter(r => r.status === 'fulfilled').length;
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const failed = results.filter(r => r.status === 'rejected').length;
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console.log(`⚡ Stress Test Results:`);
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console.log(` Total Conversions: ${rapidIterations}`);
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console.log(` Successful: ${successful}`);
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console.log(` Failed: ${failed}`);
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console.log(` Total Time: ${totalTime.toFixed(2)}ms`);
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console.log(` Average Time per Conversion: ${(totalTime / successful).toFixed(2)}ms`);
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console.log(` Concurrent Throughput: ${(successful * 1000 / totalTime).toFixed(2)} conversions/sec\n`);
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// Most conversions should succeed
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expect(successful).toBeGreaterThan(rapidIterations * 0.8); // At least 80% success rate
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expect(failed).toBeLessThan(rapidIterations * 0.2); // Less than 20% failure rate
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await preview.cleanup();
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} catch (error) {
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console.log(`❌ Stress test skipped: ${error.message}`);
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expect(error).toBeInstanceOf(smartpreview.PreviewError);
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}
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});
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export default tap.start();
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Block a user