codeburn/tests/blob-to-text.test.ts
2026-05-11 20:44:06 -07:00

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import { describe, it, expect } from 'vitest'
import { blobToText, isSqliteBusyError } from '../src/sqlite.js'
describe('blobToText', () => {
it('returns empty string for null', () => {
expect(blobToText(null)).toBe('')
})
it('returns empty string for undefined', () => {
expect(blobToText(undefined)).toBe('')
})
it('passes through strings unchanged', () => {
expect(blobToText('hello world')).toBe('hello world')
})
it('decodes valid UTF-8 Uint8Array', () => {
const buf = new TextEncoder().encode('café ☕')
expect(blobToText(buf)).toBe('café ☕')
})
it('replaces invalid UTF-8 bytes with U+FFFD instead of crashing', () => {
const buf = new Uint8Array([0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x80, 0xfe])
const result = blobToText(buf)
expect(result).toContain('Hello')
expect(result).toContain('<27>')
})
it('handles truncated multi-byte sequence', () => {
// é in UTF-8 is [0xc3, 0xa9]. Truncate to just [0xc3].
const buf = new Uint8Array([0x63, 0x61, 0x66, 0xc3])
const result = blobToText(buf)
expect(result).toBe('caf<61>')
})
it('handles empty Uint8Array', () => {
expect(blobToText(new Uint8Array(0))).toBe('')
})
})
describe('isSqliteBusyError', () => {
it('detects node:sqlite busy errors by errcode', () => {
expect(isSqliteBusyError({ code: 'ERR_SQLITE_ERROR', errcode: 5, errstr: 'database is locked' })).toBe(true)
})
it('detects sqlite locked messages', () => {
expect(isSqliteBusyError(new Error('SQLITE_LOCKED: database table is locked'))).toBe(true)
})
it('ignores unrelated sqlite errors', () => {
expect(isSqliteBusyError(new Error('no such table: session'))).toBe(false)
})
})