Bernt
6de2455917
- Added GLOBAL_MARKETS_TITLE to all translation files - Updated footer with 12 markets (4 active + 8 upcoming) - Translated market section to: zh-cn, zh-tw, ja, ko, th, vi, id, ms, hi - Built and deployed to production - CloudFront invalidation: I3RTMXVFDJXWLG3SYX208OP1CC
93 lines
2.6 KiB
JavaScript
93 lines
2.6 KiB
JavaScript
/**
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* Change Detection Service Tests
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*/
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const { ChangeDetectionService } = require('../src/services/changeDetection');
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describe('ChangeDetectionService', () => {
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let service;
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let baseImage;
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let modifiedImage;
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beforeEach(async () => {
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service = new ChangeDetectionService();
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// Create test images with same dimensions
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const width = 640;
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const height = 640;
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// Create white image
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baseImage = Buffer.alloc(width * height * 3, 255);
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// Create modified image with red region
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modifiedImage = Buffer.from(baseImage);
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for (let y = 100; y < 200; y++) {
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for (let x = 100; x < 200; x++) {
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const idx = (y * width + x) * 3;
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modifiedImage[idx] = 255; // R
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modifiedImage[idx + 1] = 0; // G
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modifiedImage[idx + 2] = 0; // B
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}
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}
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});
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describe('calculatePixelDifference', () => {
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it('should calculate pixel difference', () => {
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const img1 = Buffer.from([255, 255, 255, 0, 0, 0]);
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const img2 = Buffer.from([255, 255, 255, 255, 255, 255]);
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const diff = service.calculatePixelDifference(img1, img2);
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expect(diff).toBeGreaterThan(0);
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expect(diff).toBeLessThanOrEqual(1);
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});
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it('should return 0 for identical images', () => {
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const img = Buffer.from([128, 128, 128, 128, 128, 128]);
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const diff = service.calculatePixelDifference(img, img);
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expect(diff).toBe(0);
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});
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});
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describe('classifyChange', () => {
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it('should classify no change', () => {
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const result = service.classifyChange(0, 0, 0);
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expect(result).toBe('none');
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});
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it('should classify minor change', () => {
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const result = service.classifyChange(0.03, 0.03, 0.02);
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expect(result).toBe('minor');
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});
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it('should classify significant change', () => {
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const result = service.classifyChange(0.2, 0.2, 0.2);
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expect(result).toBe('significant');
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});
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});
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describe('combineMetrics', () => {
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it('should combine metrics with weights', () => {
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const result = service.combineMetrics(0.1, 0.2, 0.3);
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// Expected: 0.1*0.3 + 0.2*0.5 + 0.3*0.2 = 0.03 + 0.10 + 0.06 = 0.19
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expect(result).toBeCloseTo(0.19, 2);
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});
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});
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describe('calculateConfidence', () => {
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it('should return high confidence for clear changes', () => {
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const result = service.calculateConfidence(0.25);
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expect(result).toBeGreaterThan(0.9);
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});
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it('should return lower confidence for borderline changes', () => {
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const result = service.calculateConfidence(0.1);
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expect(result).toBeLessThan(0.8);
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expect(result).toBeGreaterThan(0.5);
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});
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});
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});
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