1 files changed, 0 insertions, 418 deletions
diff --git a/node_modules/ava/lib/snapshot-manager.js b/node_modules/ava/lib/snapshot-manager.js
deleted file mode 100644
index fcc24922e..000000000
--- a/node_modules/ava/lib/snapshot-manager.js
+++ /dev/null
@@ -1,418 +0,0 @@
-'use strict';
-
-const crypto = require('crypto');
-const fs = require('fs');
-const path = require('path');
-const zlib = require('zlib');
-
-const writeFileAtomic = require('@ava/write-file-atomic');
-const concordance = require('concordance');
-const indentString = require('indent-string');
-const makeDir = require('make-dir');
-const md5Hex = require('md5-hex');
-const Buffer = require('safe-buffer').Buffer;
-const convertSourceMap = require('convert-source-map');
-
-const concordanceOptions = require('./concordance-options').snapshotManager;
-
-// Increment if encoding layout or Concordance serialization versions change. Previous AVA versions will not be able to
-// decode buffers generated by a newer version, so changing this value will require a major version bump of AVA itself.
-// The version is encoded as an unsigned 16 bit integer.
-const VERSION = 1;
-
-const VERSION_HEADER = Buffer.alloc(2);
-VERSION_HEADER.writeUInt16LE(VERSION);
-
-// The decoder matches on the trailing newline byte (0x0A).
-const READABLE_PREFIX = Buffer.from(`AVA Snapshot v${VERSION}\n`, 'ascii');
-const REPORT_SEPARATOR = Buffer.from('\n\n', 'ascii');
-const REPORT_TRAILING_NEWLINE = Buffer.from('\n', 'ascii');
-
-const MD5_HASH_LENGTH = 16;
-
-class SnapshotError extends Error {
-	constructor(message, snapPath) {
-		super(message);
-		this.name = 'SnapshotError';
-		this.snapPath = snapPath;
-	}
-}
-exports.SnapshotError = SnapshotError;
-
-class ChecksumError extends SnapshotError {
-	constructor(snapPath) {
-		super('Checksum mismatch', snapPath);
-		this.name = 'ChecksumError';
-	}
-}
-exports.ChecksumError = ChecksumError;
-
-class VersionMismatchError extends SnapshotError {
-	constructor(snapPath, version) {
-		super('Unexpected snapshot version', snapPath);
-		this.name = 'VersionMismatchError';
-		this.snapVersion = version;
-		this.expectedVersion = VERSION;
-	}
-}
-exports.VersionMismatchError = VersionMismatchError;
-
-const LEGACY_SNAPSHOT_HEADER = Buffer.from('// Jest Snapshot v1');
-function isLegacySnapshot(buffer) {
-	return LEGACY_SNAPSHOT_HEADER.equals(buffer.slice(0, LEGACY_SNAPSHOT_HEADER.byteLength));
-}
-
-class LegacyError extends SnapshotError {
-	constructor(snapPath) {
-		super('Legacy snapshot file', snapPath);
-		this.name = 'LegacyError';
-	}
-}
-exports.LegacyError = LegacyError;
-
-function tryRead(file) {
-	try {
-		return fs.readFileSync(file);
-	} catch (err) {
-		if (err.code === 'ENOENT') {
-			return null;
-		}
-
-		throw err;
-	}
-}
-
-function withoutLineEndings(buffer) {
-	let newLength = buffer.byteLength - 1;
-	while (buffer[newLength] === 0x0A || buffer[newLength] === 0x0D) {
-		newLength--;
-	}
-	return buffer.slice(0, newLength);
-}
-
-function formatEntry(label, descriptor) {
-	if (label) {
-		label = `> ${label}\n\n`;
-	}
-	const codeBlock = indentString(concordance.formatDescriptor(descriptor, concordanceOptions), 4);
-	return Buffer.from(label + codeBlock, 'utf8');
-}
-
-function combineEntries(entries) {
-	const buffers = [];
-	let byteLength = 0;
-
-	const sortedKeys = Array.from(entries.keys()).sort();
-	for (const key of sortedKeys) {
-		const keyBuffer = Buffer.from(`\n\n## ${key}\n\n`, 'utf8');
-		buffers.push(keyBuffer);
-		byteLength += keyBuffer.byteLength;
-
-		const formattedEntries = entries.get(key);
-		const last = formattedEntries[formattedEntries.length - 1];
-		for (const entry of formattedEntries) {
-			buffers.push(entry);
-			byteLength += entry.byteLength;
-
-			if (entry !== last) {
-				buffers.push(REPORT_SEPARATOR);
-				byteLength += REPORT_SEPARATOR.byteLength;
-			}
-		}
-	}
-
-	return {buffers, byteLength};
-}
-
-function generateReport(relFile, snapFile, entries) {
-	const combined = combineEntries(entries);
-	const buffers = combined.buffers;
-	let byteLength = combined.byteLength;
-
-	const header = Buffer.from(`# Snapshot report for \`${relFile}\`
-
-The actual snapshot is saved in \`${snapFile}\`.
-
-Generated by [AVA](https://ava.li).`, 'utf8');
-	buffers.unshift(header);
-	byteLength += header.byteLength;
-
-	buffers.push(REPORT_TRAILING_NEWLINE);
-	byteLength += REPORT_TRAILING_NEWLINE.byteLength;
-	return Buffer.concat(buffers, byteLength);
-}
-
-function appendReportEntries(existingReport, entries) {
-	const combined = combineEntries(entries);
-	const buffers = combined.buffers;
-	let byteLength = combined.byteLength;
-
-	const prepend = withoutLineEndings(existingReport);
-	buffers.unshift(prepend);
-	byteLength += prepend.byteLength;
-
-	return Buffer.concat(buffers, byteLength);
-}
-
-function encodeSnapshots(buffersByHash) {
-	const buffers = [];
-	let byteOffset = 0;
-
-	// Entry start and end pointers are relative to the header length. This means
-	// it's possible to append new entries to an existing snapshot file, without
-	// having to rewrite pointers for existing entries.
-	const headerLength = Buffer.alloc(4);
-	buffers.push(headerLength);
-	byteOffset += 4;
-
-	// Allows 65535 hashes (tests or identified snapshots) per file.
-	const numHashes = Buffer.alloc(2);
-	numHashes.writeUInt16LE(buffersByHash.size);
-	buffers.push(numHashes);
-	byteOffset += 2;
-
-	const entries = [];
-	for (const pair of buffersByHash) {
-		const hash = pair[0];
-		const snapshotBuffers = pair[1];
-
-		buffers.push(Buffer.from(hash, 'hex'));
-		byteOffset += MD5_HASH_LENGTH;
-
-		// Allows 65535 snapshots per hash.
-		const numSnapshots = Buffer.alloc(2);
-		numSnapshots.writeUInt16LE(snapshotBuffers.length, 0);
-		buffers.push(numSnapshots);
-		byteOffset += 2;
-
-		for (const value of snapshotBuffers) {
-			// Each pointer is 32 bits, restricting the total, uncompressed buffer to
-			// 4 GiB.
-			const start = Buffer.alloc(4);
-			const end = Buffer.alloc(4);
-			entries.push({start, end, value});
-
-			buffers.push(start, end);
-			byteOffset += 8;
-		}
-	}
-
-	headerLength.writeUInt32LE(byteOffset, 0);
-
-	let bodyOffset = 0;
-	for (const entry of entries) {
-		const start = bodyOffset;
-		const end = bodyOffset + entry.value.byteLength;
-		entry.start.writeUInt32LE(start, 0);
-		entry.end.writeUInt32LE(end, 0);
-		buffers.push(entry.value);
-		bodyOffset = end;
-	}
-	byteOffset += bodyOffset;
-
-	const compressed = zlib.gzipSync(Buffer.concat(buffers, byteOffset));
-	const md5sum = crypto.createHash('md5').update(compressed).digest();
-	return Buffer.concat([
-		READABLE_PREFIX,
-		VERSION_HEADER,
-		md5sum,
-		compressed
-	], READABLE_PREFIX.byteLength + VERSION_HEADER.byteLength + MD5_HASH_LENGTH + compressed.byteLength);
-}
-
-function decodeSnapshots(buffer, snapPath) {
-	if (isLegacySnapshot(buffer)) {
-		throw new LegacyError(snapPath);
-	}
-
-	// The version starts after the readable prefix, which is ended by a newline
-	// byte (0x0A).
-	const versionOffset = buffer.indexOf(0x0A) + 1;
-	const version = buffer.readUInt16LE(versionOffset);
-	if (version !== VERSION) {
-		throw new VersionMismatchError(snapPath, version);
-	}
-
-	const md5sumOffset = versionOffset + 2;
-	const compressedOffset = md5sumOffset + MD5_HASH_LENGTH;
-	const compressed = buffer.slice(compressedOffset);
-
-	const md5sum = crypto.createHash('md5').update(compressed).digest();
-	const expectedSum = buffer.slice(md5sumOffset, compressedOffset);
-	if (!md5sum.equals(expectedSum)) {
-		throw new ChecksumError(snapPath);
-	}
-
-	const decompressed = zlib.gunzipSync(compressed);
-	let byteOffset = 0;
-
-	const headerLength = decompressed.readUInt32LE(byteOffset);
-	byteOffset += 4;
-
-	const snapshotsByHash = new Map();
-	const numHashes = decompressed.readUInt16LE(byteOffset);
-	byteOffset += 2;
-
-	for (let count = 0; count < numHashes; count++) {
-		const hash = decompressed.toString('hex', byteOffset, byteOffset + MD5_HASH_LENGTH);
-		byteOffset += MD5_HASH_LENGTH;
-
-		const numSnapshots = decompressed.readUInt16LE(byteOffset);
-		byteOffset += 2;
-
-		const snapshotsBuffers = new Array(numSnapshots);
-		for (let index = 0; index < numSnapshots; index++) {
-			const start = decompressed.readUInt32LE(byteOffset) + headerLength;
-			byteOffset += 4;
-			const end = decompressed.readUInt32LE(byteOffset) + headerLength;
-			byteOffset += 4;
-			snapshotsBuffers[index] = decompressed.slice(start, end);
-		}
-
-		// Allow for new entries to be appended to an existing header, which could
-		// lead to the same hash being present multiple times.
-		if (snapshotsByHash.has(hash)) {
-			snapshotsByHash.set(hash, snapshotsByHash.get(hash).concat(snapshotsBuffers));
-		} else {
-			snapshotsByHash.set(hash, snapshotsBuffers);
-		}
-	}
-
-	return snapshotsByHash;
-}
-
-class Manager {
-	constructor(options) {
-		this.appendOnly = options.appendOnly;
-		this.dir = options.dir;
-		this.relFile = options.relFile;
-		this.reportFile = options.reportFile;
-		this.snapFile = options.snapFile;
-		this.snapPath = options.snapPath;
-		this.snapshotsByHash = options.snapshotsByHash;
-
-		this.hasChanges = false;
-		this.reportEntries = new Map();
-	}
-
-	compare(options) {
-		const hash = md5Hex(options.belongsTo);
-		const entries = this.snapshotsByHash.get(hash) || [];
-		if (options.index > entries.length) {
-			throw new RangeError(`Cannot record snapshot ${options.index} for ${JSON.stringify(options.belongsTo)}, exceeds expected index of ${entries.length}`);
-		}
-		if (options.index === entries.length) {
-			this.record(hash, options);
-			return {pass: true};
-		}
-
-		const snapshotBuffer = entries[options.index];
-		const actual = concordance.deserialize(snapshotBuffer, concordanceOptions);
-
-		const expected = concordance.describe(options.expected, concordanceOptions);
-		const pass = concordance.compareDescriptors(actual, expected);
-
-		return {actual, expected, pass};
-	}
-
-	record(hash, options) {
-		const descriptor = concordance.describe(options.expected, concordanceOptions);
-
-		this.hasChanges = true;
-		const snapshot = concordance.serialize(descriptor);
-		if (this.snapshotsByHash.has(hash)) {
-			this.snapshotsByHash.get(hash).push(snapshot);
-		} else {
-			this.snapshotsByHash.set(hash, [snapshot]);
-		}
-
-		const entry = formatEntry(options.label, descriptor);
-		if (this.reportEntries.has(options.belongsTo)) {
-			this.reportEntries.get(options.belongsTo).push(entry);
-		} else {
-			this.reportEntries.set(options.belongsTo, [entry]);
-		}
-	}
-
-	save() {
-		if (!this.hasChanges) {
-			return null;
-		}
-
-		const snapPath = this.snapPath;
-		const buffer = encodeSnapshots(this.snapshotsByHash);
-
-		const reportPath = path.join(this.dir, this.reportFile);
-		const existingReport = this.appendOnly ? tryRead(reportPath) : null;
-		const reportBuffer = existingReport ?
-			appendReportEntries(existingReport, this.reportEntries) :
-			generateReport(this.relFile, this.snapFile, this.reportEntries);
-
-		makeDir.sync(this.dir);
-		const tmpSnapPath = writeFileAtomic.sync(snapPath, buffer);
-		const tmpReportPath = writeFileAtomic.sync(reportPath, reportBuffer);
-
-		return [tmpSnapPath, tmpReportPath, snapPath, reportPath];
-	}
-}
-
-function determineSnapshotDir(options) {
-	const testDir = determineSourceMappedDir(options);
-	if (options.fixedLocation) {
-		const relativeTestLocation = path.relative(options.projectDir, testDir);
-		return path.join(options.fixedLocation, relativeTestLocation);
-	}
-
-	const parts = new Set(path.relative(options.projectDir, testDir).split(path.sep));
-	if (parts.has('__tests__')) {
-		return path.join(testDir, '__snapshots__');
-	}
-	if (parts.has('test') || parts.has('tests')) { // Accept tests, even though it's not in the default test patterns
-		return path.join(testDir, 'snapshots');
-	}
-
-	return testDir;
-}
-
-function determineSourceMappedDir(options) {
-	const source = tryRead(options.file).toString();
-	const converter = convertSourceMap.fromSource(source) || convertSourceMap.fromMapFileSource(source, options.testDir);
-	if (converter) {
-		const map = converter.toObject();
-		const firstSource = `${map.sourceRoot || ''}${map.sources[0]}`;
-		const sourceFile = path.resolve(options.testDir, firstSource);
-		return path.dirname(sourceFile);
-	}
-
-	return options.testDir;
-}
-
-function load(options) {
-	const dir = determineSnapshotDir(options);
-	const reportFile = `${options.name}.md`;
-	const snapFile = `${options.name}.snap`;
-	const snapPath = path.join(dir, snapFile);
-
-	let appendOnly = !options.updating;
-	let snapshotsByHash;
-
-	if (!options.updating) {
-		const buffer = tryRead(snapPath);
-		if (buffer) {
-			snapshotsByHash = decodeSnapshots(buffer, snapPath);
-		} else {
-			appendOnly = false;
-		}
-	}
-
-	return new Manager({
-		appendOnly,
-		dir,
-		relFile: options.relFile,
-		reportFile,
-		snapFile,
-		snapPath,
-		snapshotsByHash: snapshotsByHash || new Map()
-	});
-}
-exports.load = load;