39 lines
1.6 KiB
TypeScript
39 lines
1.6 KiB
TypeScript
 
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import { test } from 'node:test';
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import assert from 'node:assert/strict';
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import { formatFileSize, isCompressible } from './imageCompression';
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test('formatFileSize formats bytes below 1KB as B', () => {
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assert.equal(formatFileSize(0), '0 B');
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assert.equal(formatFileSize(1), '1 B');
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assert.equal(formatFileSize(512), '512 B');
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assert.equal(formatFileSize(1023), '1023 B');
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});
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test('formatFileSize formats values in the KB range', () => {
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assert.equal(formatFileSize(1024), '1.0 KB');
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assert.equal(formatFileSize(1536), '1.5 KB');
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// 1024 * 1024 - 1 is still under the MB boundary
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assert.equal(formatFileSize(1024 * 1024 - 1), '1024.0 KB');
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});
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test('formatFileSize formats values in the MB range', () => {
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assert.equal(formatFileSize(1024 * 1024), '1.0 MB');
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assert.equal(formatFileSize(1024 * 1024 * 1.5), '1.5 MB');
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assert.equal(formatFileSize(1024 * 1024 * 10), '10.0 MB');
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});
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test('isCompressible accepts raster image types', () => {
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assert.equal(isCompressible({ type: 'image/png' } as Blob), true);
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assert.equal(isCompressible({ type: 'image/jpeg' } as Blob), true);
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assert.equal(isCompressible({ type: 'image/gif' } as Blob), true);
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assert.equal(isCompressible({ type: 'image/webp' } as Blob), true);
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});
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test('isCompressible rejects svg, empty type, and non-images', () => {
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assert.equal(isCompressible({ type: 'image/svg+xml' } as Blob), false);
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assert.equal(isCompressible({ type: '' } as Blob), false);
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assert.equal(isCompressible({ type: 'application/pdf' } as Blob), false);
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assert.equal(isCompressible({ type: 'text/plain' } as Blob), false);
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assert.equal(isCompressible({ type: 'video/mp4' } as Blob), false);
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});
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