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| 1 | +import { readFileSync } from 'node:fs'; |
| 2 | +import { join } from 'node:path'; |
| 3 | + |
| 4 | +import { expect, test } from 'vitest'; |
| 5 | + |
| 6 | +import { fromZetasizer } from '../../index.ts'; |
| 7 | + |
| 8 | +const testFilePath = join(import.meta.dirname, 'data/zetasizer.txt'); |
| 9 | +const text = readFileSync(testFilePath, 'latin1'); |
| 10 | + |
| 11 | +test('file produces 3 spectra', () => { |
| 12 | + const analysis = fromZetasizer(text); |
| 13 | + |
| 14 | + expect(analysis.spectra).toHaveLength(3); |
| 15 | + expect(analysis.spectra[0]?.dataType).toBe('Size measurement'); |
| 16 | +}); |
| 17 | + |
| 18 | +test('x variable contains Sizes data', () => { |
| 19 | + const analysis = fromZetasizer(text); |
| 20 | + const spectrum = analysis.spectra[0]; |
| 21 | + |
| 22 | + expect(spectrum).toBeDefined(); |
| 23 | + expect(spectrum?.variables.x.data).toBeInstanceOf(Float64Array); |
| 24 | + expect(spectrum?.variables.x.data).toHaveLength(70); |
| 25 | + expect(spectrum?.variables.x.label).toBe('Particle diameter'); |
| 26 | + expect(spectrum?.variables.x.units).toBe('nm'); |
| 27 | + expect(spectrum?.variables.x.isDependent).toBe(false); |
| 28 | + expect(spectrum?.variables.x.data[0]).toBeCloseTo(0.4, 5); |
| 29 | + expect(spectrum?.variables.x.data[69]).toBeCloseTo(10000, 0); |
| 30 | +}); |
| 31 | + |
| 32 | +test('y variable contains intensity distribution', () => { |
| 33 | + const analysis = fromZetasizer(text); |
| 34 | + const spectrum = analysis.spectra[0]; |
| 35 | + |
| 36 | + expect(spectrum).toBeDefined(); |
| 37 | + expect(spectrum?.variables.y.data).toBeInstanceOf(Float64Array); |
| 38 | + expect(spectrum?.variables.y.data).toHaveLength(70); |
| 39 | + expect(spectrum?.variables.y.label).toBe('Intensity'); |
| 40 | + expect(spectrum?.variables.y.units).toBe('%'); |
| 41 | + expect(spectrum?.variables.y.isDependent).toBe(true); |
| 42 | +}); |
| 43 | + |
| 44 | +test('volume and number variables are present', () => { |
| 45 | + const analysis = fromZetasizer(text); |
| 46 | + const spectrum = analysis.spectra[0]; |
| 47 | + |
| 48 | + expect(spectrum).toBeDefined(); |
| 49 | + |
| 50 | + expect(spectrum?.variables.v).toBeDefined(); |
| 51 | + expect(spectrum?.variables.v?.label).toBe('Volume'); |
| 52 | + expect(spectrum?.variables.v?.units).toBe('%'); |
| 53 | + expect(spectrum?.variables.v?.data).toHaveLength(70); |
| 54 | + |
| 55 | + expect(spectrum?.variables.n).toBeDefined(); |
| 56 | + expect(spectrum?.variables.n?.label).toBe('Number'); |
| 57 | + expect(spectrum?.variables.n?.data).toHaveLength(70); |
| 58 | +}); |
| 59 | + |
| 60 | +test('title is extracted from sample name', () => { |
| 61 | + const analysis = fromZetasizer(text); |
| 62 | + |
| 63 | + expect(analysis.spectra[0]?.title).toBe('20260916_SiNP_7 1'); |
| 64 | + expect(analysis.spectra[1]?.title).toBe('20260916_SiNP_7 2'); |
| 65 | +}); |
| 66 | + |
| 67 | +test('meta contains measurement metadata', () => { |
| 68 | + const analysis = fromZetasizer(text); |
| 69 | + const meta = analysis.spectra[0]?.meta; |
| 70 | + |
| 71 | + expect(meta?.['Measurement Date and Time']).toBe( |
| 72 | + 'Wednesday, 25 February 2026 16:02:06', |
| 73 | + ); |
| 74 | + expect(meta?.['Record Number']).toBe(20); |
| 75 | + expect(meta?.['Result Origin']).toBe('Nano series'); |
| 76 | + expect(meta?.['Viscosity (cP)']).toBe(1.2); |
| 77 | + expect(meta?.['Measurement Status']).toBe('Complete'); |
| 78 | +}); |
| 79 | + |
| 80 | +test('settings contain instrument info', () => { |
| 81 | + const analysis = fromZetasizer(text); |
| 82 | + const settings = analysis.spectra[0]?.settings; |
| 83 | + |
| 84 | + expect(settings?.instrument).toStrictEqual({ |
| 85 | + manufacturer: 'Malvern Panalytical', |
| 86 | + model: 'Zetasizer', |
| 87 | + serialNumber: 'MAL1086580', |
| 88 | + software: { |
| 89 | + name: 'Zetasizer Nano', |
| 90 | + version: '8.02', |
| 91 | + }, |
| 92 | + }); |
| 93 | +}); |
| 94 | + |
| 95 | +test('settings contain measurement parameters', () => { |
| 96 | + const analysis = fromZetasizer(text); |
| 97 | + const meta = analysis.spectra[0]?.meta; |
| 98 | + |
| 99 | + expect(meta?.['Temperature (°C)']).toBe(25); |
| 100 | + expect(meta?.['Duration (s)']).toBe(10); |
| 101 | + expect(meta?.['Size Runs']).toBe(10); |
| 102 | + expect(meta?.['Measurement Position (mm)']).toBe(3); |
| 103 | + expect(meta?.Attenuator).toBe(7); |
| 104 | +}); |
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