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Generalize prewrite test for memory-level #90

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Oct 21, 2024
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Generalize prewrite test for memory-level #90

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10 changes: 9 additions & 1 deletion test/hooks/prewrite.js
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Original file line number Diff line number Diff line change
Expand Up @@ -769,6 +769,7 @@ module.exports = function (test, testCommon) {
const db = testCommon.factory()
await db.open()

const textDecoder = new TextDecoder()
const books = db.sublevel('books', { valueEncoding: 'json' })
const index = db.sublevel('authors', {
// Use JSON, which normally doesn't make sense for keys but
Expand All @@ -779,7 +780,14 @@ module.exports = function (test, testCommon) {
db.on('write', (ops) => {
// Check that data is written to correct sublevels, specifically
// !authors!Hesse~12 rather than !books!!authors!Hesse~12.
t.same(ops.map(x => x.key), ['!books!12', '!authors!"Hesse~12"'])
t.same(ops.map(x => decode(x.key)), ['!books!12', '!authors!"Hesse~12"'])

// It's unfortunate DX but because the write is made via the sublevel, the
// format of keys depends on the supported encodings of db. For example on
// a MemoryLevel({ storeEncoding: 'buffer' }) the key will be a buffer.
function decode (key) {
return db.keyEncoding('utf8').format === 'utf8' ? key : textDecoder.decode(key)
}
})

books.on('write', (ops) => {
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