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How to use encodeSnapshots method in ava

Best JavaScript code snippet using ava

snapshot-manager.js

Source:snapshot-manager.js

...123	buffers.unshift(prepend);124	byteLength += prepend.byteLength;125	return Buffer.concat(buffers, byteLength);126}127function encodeSnapshots(buffersByHash) {128	const buffers = [];129	let byteOffset = 0;130	// Entry start and end pointers are relative to the header length. This means131	// it's possible to append new entries to an existing snapshot file, without132	// having to rewrite pointers for existing entries.133	const headerLength = Buffer.alloc(4);134	buffers.push(headerLength);135	byteOffset += 4;136	// Allows 65535 hashes (tests or identified snapshots) per file.137	const numHashes = Buffer.alloc(2);138	numHashes.writeUInt16LE(buffersByHash.size);139	buffers.push(numHashes);140	byteOffset += 2;141	const entries = [];142	for (const pair of buffersByHash) {143		const hash = pair[0];144		const snapshotBuffers = pair[1];145		buffers.push(Buffer.from(hash, 'hex'));146		byteOffset += MD5_HASH_LENGTH;147		// Allows 65535 snapshots per hash.148		const numSnapshots = Buffer.alloc(2);149		numSnapshots.writeUInt16LE(snapshotBuffers.length, 0);150		buffers.push(numSnapshots);151		byteOffset += 2;152		for (const value of snapshotBuffers) {153			// Each pointer is 32 bits, restricting the total, uncompressed buffer to154			// 4 GiB.155			const start = Buffer.alloc(4);156			const end = Buffer.alloc(4);157			entries.push({start, end, value});158			buffers.push(start, end);159			byteOffset += 8;160		}161	}162	headerLength.writeUInt32LE(byteOffset, 0);163	let bodyOffset = 0;164	for (const entry of entries) {165		const start = bodyOffset;166		const end = bodyOffset + entry.value.byteLength;167		entry.start.writeUInt32LE(start, 0);168		entry.end.writeUInt32LE(end, 0);169		buffers.push(entry.value);170		bodyOffset = end;171	}172	byteOffset += bodyOffset;173	const compressed = zlib.gzipSync(Buffer.concat(buffers, byteOffset));174	const md5sum = crypto.createHash('md5').update(compressed).digest();175	return Buffer.concat([176		READABLE_PREFIX,177		VERSION_HEADER,178		md5sum,179		compressed180	], READABLE_PREFIX.byteLength + VERSION_HEADER.byteLength + MD5_HASH_LENGTH + compressed.byteLength);181}182function decodeSnapshots(buffer, snapPath) {183	if (isLegacySnapshot(buffer)) {184		throw new LegacyError(snapPath);185	}186	// The version starts after the readable prefix, which is ended by a newline187	// byte (0x0A).188	const versionOffset = buffer.indexOf(0x0A) + 1;189	const version = buffer.readUInt16LE(versionOffset);190	if (version !== VERSION) {191		throw new VersionMismatchError(snapPath, version);192	}193	const md5sumOffset = versionOffset + 2;194	const compressedOffset = md5sumOffset + MD5_HASH_LENGTH;195	const compressed = buffer.slice(compressedOffset);196	const md5sum = crypto.createHash('md5').update(compressed).digest();197	const expectedSum = buffer.slice(md5sumOffset, compressedOffset);198	if (!md5sum.equals(expectedSum)) {199		throw new ChecksumError(snapPath);200	}201	const decompressed = zlib.gunzipSync(compressed);202	let byteOffset = 0;203	const headerLength = decompressed.readUInt32LE(byteOffset);204	byteOffset += 4;205	const snapshotsByHash = new Map();206	const numHashes = decompressed.readUInt16LE(byteOffset);207	byteOffset += 2;208	for (let count = 0; count < numHashes; count++) {209		const hash = decompressed.toString('hex', byteOffset, byteOffset + MD5_HASH_LENGTH);210		byteOffset += MD5_HASH_LENGTH;211		const numSnapshots = decompressed.readUInt16LE(byteOffset);212		byteOffset += 2;213		const snapshotsBuffers = new Array(numSnapshots);214		for (let index = 0; index < numSnapshots; index++) {215			const start = decompressed.readUInt32LE(byteOffset) + headerLength;216			byteOffset += 4;217			const end = decompressed.readUInt32LE(byteOffset) + headerLength;218			byteOffset += 4;219			snapshotsBuffers[index] = decompressed.slice(start, end);220		}221		// Allow for new entries to be appended to an existing header, which could222		// lead to the same hash being present multiple times.223		if (snapshotsByHash.has(hash)) {224			snapshotsByHash.set(hash, snapshotsByHash.get(hash).concat(snapshotsBuffers));225		} else {226			snapshotsByHash.set(hash, snapshotsBuffers);227		}228	}229	return snapshotsByHash;230}231class Manager {232	constructor(options) {233		this.appendOnly = options.appendOnly;234		this.dir = options.dir;235		this.relFile = options.relFile;236		this.reportFile = options.reportFile;237		this.snapFile = options.snapFile;238		this.snapPath = options.snapPath;239		this.snapshotsByHash = options.snapshotsByHash;240		this.hasChanges = false;241		this.reportEntries = new Map();242	}243	compare(options) {244		const hash = md5Hex(options.belongsTo);245		const entries = this.snapshotsByHash.get(hash) || [];246		if (options.index > entries.length) {247			throw new RangeError(`Cannot record snapshot ${options.index} for ${JSON.stringify(options.belongsTo)}, exceeds expected index of ${entries.length}`);248		}249		if (options.index === entries.length) {250			this.record(hash, options);251			return {pass: true};252		}253		const snapshotBuffer = entries[options.index];254		const actual = concordance.deserialize(snapshotBuffer, concordanceOptions);255		const expected = concordance.describe(options.expected, concordanceOptions);256		const pass = concordance.compareDescriptors(actual, expected);257		return {actual, expected, pass};258	}259	record(hash, options) {260		const descriptor = concordance.describe(options.expected, concordanceOptions);261		this.hasChanges = true;262		const snapshot = concordance.serialize(descriptor);263		if (this.snapshotsByHash.has(hash)) {264			this.snapshotsByHash.get(hash).push(snapshot);265		} else {266			this.snapshotsByHash.set(hash, [snapshot]);267		}268		const entry = formatEntry(options.label, descriptor);269		if (this.reportEntries.has(options.belongsTo)) {270			this.reportEntries.get(options.belongsTo).push(entry);271		} else {272			this.reportEntries.set(options.belongsTo, [entry]);273		}274	}275	save() {276		if (!this.hasChanges) {277			return null;278		}279		const snapPath = this.snapPath;280		const buffer = encodeSnapshots(this.snapshotsByHash);281		const reportPath = path.join(this.dir, this.reportFile);282		const existingReport = this.appendOnly ? tryRead(reportPath) : null;283		const reportBuffer = existingReport ?284			appendReportEntries(existingReport, this.reportEntries) :285			generateReport(this.relFile, this.snapFile, this.reportEntries);286		makeDir.sync(this.dir);287		const tmpSnapPath = writeFileAtomic.sync(snapPath, buffer);288		const tmpReportPath = writeFileAtomic.sync(reportPath, reportBuffer);289		return [tmpSnapPath, tmpReportPath, snapPath, reportPath];290	}291}292function determineSnapshotDir(options) {293	const testDir = determineSourceMappedDir(options);294	if (options.fixedLocation) {...

Using AI Code Generation

1import test from 'ava';2import { encodeSnapshots } from 'ava/lib/concordance-options';3test('my test', t => {4  t.snapshot(encodeSnapshots({ foo: 'bar' }));5});6import test from 'ava';7import { encodeSnapshots } from 'ava/lib/concordance-options';8test('my test', t => {9  t.snapshot(encodeSnapshots({ foo: 'bar' }));10});11import test from 'ava';12import { encodeSnapshots } from 'ava/lib/concordance-options';13test('my test', t => {14  t.snapshot(encodeSnapshots({ foo: 'bar' }));15});16import test from 'ava';17import { encodeSnapshots } from 'ava/lib/concordance-options';18test('my test', t => {19  t.snapshot(encodeSnapshots({ foo: 'bar' }));20});21import test from 'ava';22import { encodeSnapshots } from 'ava/lib/concordance-options';23test('my test', t => {24  t.snapshot(encodeSnapshots({ foo: 'bar' }));25});26import test from 'ava';27import { encodeSnapshots } from 'ava/lib/concordance-options';28test('my test', t => {29  t.snapshot(encodeSnapshots({ foo: 'bar' }));30});31import test from 'ava';32import { encodeSnapshots } from 'ava/lib/concordance-options';33test('my test', t => {34  t.snapshot(encodeSnapshots({ foo: 'bar' }));35});36import test from 'ava';37import { encodeSnapshots } from 'ava/lib/concordance-options';38test('my test', t => {39  t.snapshot(encodeSnapshots({ foo: 'bar' }));40});41import test

Using AI Code Generation

1var availableSnapshots = require('availableSnapshots');2var encodedSnapshots = availableSnapshots.encodeSnapshots(snapshots);3console.log(encodedSnapshots);4module.exports = {5    encodeSnapshots: function(snapshots) {6        return 'encodedSnapshots';7    }8};

Using AI Code Generation

1import test from 'ava';2import {encodeSnapshots} from 'ava/lib/worker/serialize';3test('test', t => {4  t.snapshot(encodeSnapshots({a: 1, b: 2}));5});6import test from 'ava';7import {encodeSnapshots} from 'ava/lib/worker/serialize';8test('test', t => {9  t.snapshot(encodeSnapshots({a: 1, b: 2}));10});11import test from 'ava';12import {encodeSnapshots} from 'ava/lib/worker/serialize';13test('test', t => {14  t.snapshot(encodeSnapshots({a: 1, b: 2}));15});16import test from 'ava';17import {encodeSnapshots} from 'ava/lib/worker/serialize';18test('test', t => {19  t.snapshot(encodeSnapshots({a: 1, b: 2}));20});21import test from 'ava';22import {encodeSnapshots} from 'ava/lib/worker/serialize';23test('test', t => {24  t.snapshot(encodeSnapshots({a: 1, b: 2}));25});26import test from 'ava';27import {encodeSnapshots} from 'ava/lib/worker/serialize';28test('test', t => {29  t.snapshot(encodeSnapshots({a: 1, b: 2}));30});31import test from 'ava';32import {encodeSnapshots} from 'ava/lib/worker/serialize';33test('test', t => {34  t.snapshot(encodeSnapshots({a: 1, b: 2}));35});36import test from 'ava';37import {encodeSnapshots} from 'ava/lib/worker/serialize';38test('test', t => {39  t.snapshot(encodeSnapshots({a: 1, b: 2}));40});

Using AI Code Generation

1const test = require("ava");2const { encodeSnapshots } = require("ava/lib/snapshot/encode");3const { readFileSync, writeFileSync } = require("fs");4const { join } = require("path");5const fixtures = join(__dirname, "fixtures");6const snapshots = join(__dirname, "snapshots");7test("encodeSnapshots", (t) => {8  const input = readFileSync(join(fixtures, "input.js"), "utf8");9  const output = readFileSync(join(snapshots, "output.js"), "utf8");10  t.is(encodeSnapshots(input), output);11});12test("encodeSnapshots", (t) => {13  t.snapshot({14  });15});16test("encodeSnapshots", (t) => {17  t.snapshot({18  });19});20Object {21}22`;

Using AI Code Generation

1import {encodeSnapshots} from 'ava/lib/worker/serialize';2import {test} from 'ava';3test('test', t => {4    const a = {a: 1};5    const b = {b: 2};6    const c = {c: 3};7    const d = {d: 4};8    const e = {e: 5};9    const f = {f: 6};10    const g = {g: 7};11    const h = {h: 8};12    const i = {i: 9};13    const j = {j: 10};14    const k = {k: 11};15    const l = {l: 12};16    const m = {m: 13};17    const n = {n: 14};18    const o = {o: 15};19    const p = {p: 16};20    const q = {q: 17};21    const r = {r: 18};22    const s = {s: 19};23    const t = {t: 20};24    const u = {u: 21};25    const v = {v: 22};26    const w = {w: 23};27    const x = {x: 24};28    const y = {y: 25};29    const z = {z: 26};30    const aa = {aa: 27};31    const ab = {ab: 28};32    const ac = {ac: 29};33    const ad = {ad: 30};34    const ae = {ae: 31};35    const af = {af: 32};36    const ag = {ag: 33};37    const ah = {ah: 34};38    const ai = {ai: 35};39    const aj = {aj: 36};40    const ak = {ak: 37};41    const al = {al: 38};42    const am = {am: 39};43    const an = {an: 40};44    const ao = {ao: 41};45    const ap = {ap: 42};46    const aq = {aq: 43};47    const ar = {ar: 44};48    const as = {as: 45};49    const at = {at: 46};50    const au = {au:

Using AI Code Generation

1import { encodeSnapshots } from 'ava/lib/concordance-options';2import { test } from 'ava';3import { getSnapshotPath } from 'ava/lib/snapshot-utils';4test('my test', async t => {5  const snapshotPath = getSnapshotPath(t);6  const options = {7  };8  const encoded = await encodeSnapshots(options);9  console.log(encoded);10});11{ 'test.js': { 'my test': { 'my test': { 'my test': {} } } } }12{ 'test.js': { 'my test': { 'my test': { 'my test': {} } } } }

Using AI Code Generation

1import {encodeSnapshots} from 'ava/lib/worker/serialization';2import {test} from 'ava';3test('my test', t => {4    const obj = {5    };6    t.snapshot(encodeSnapshots(obj));7});8import {encodeSnapshots} from 'ava/lib/worker/serialization';9import {test} from 'ava';10test('my test', t => {11    const obj = {12    };13    t.snapshot(encodeSnapshots(obj));14});15import {encodeSnapshots} from 'ava/lib/worker/serialization';16import {test} from 'ava';17test('my test', t => {18    const obj = {19    };20    t.snapshot(encodeSnapshots(obj));21});22import {encodeSnapshots} from 'ava/lib/worker/serialization';23import {test} from 'ava';24test('my test', t => {25    const obj = {26    };27    t.snapshot(encodeSnapshots(obj));28});29import {encodeSnapshots} from 'ava/lib/worker/serialization';30import {test} from 'ava';31test('my test', t => {32    const obj = {33    };34    t.snapshot(encodeSnapshots(obj));35});36import {encodeSnapshots} from 'ava/lib/worker/serialization';37import {test} from 'ava';38test('my test', t => {39    const obj = {40    };41    t.snapshot(encodeSnapshots(obj));42});43import {encodeSnapshots} from 'ava/lib/worker/serialization';44import {test} from 'ava';45test('my test', t =>

Using AI Code Generation

1var snapshot = require('snapshot');2var encodedSnapshots = snapshot.encodeSnapshots([snapshot1, snapshot2, snapshot3], 'base64');3var snapshot = require('snapshot');4var decodedSnapshots = snapshot.decodeSnapshots(encodedSnapshots, 'base64');5var snapshot = require('snapshot');6var snapshot = snapshot.createSnapshot({7}, function(error, snapshot) {8});9var snapshot = require('snapshot');10var snapshot = snapshot.createSnapshot({11}, function(error, snapshot) {12});13var snapshot = require('snapshot');14var snapshot = snapshot.createSnapshot({15}, function(error, snapshot) {16});17var snapshot = require('snapshot');18var snapshot = snapshot.createSnapshot({19}, function(error, snapshot) {20});21var snapshot = require('snapshot');22var snapshot = snapshot.createSnapshot({23}, function(error, snapshot) {24});

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