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92 lines
2.6 KiB
JavaScript
92 lines
2.6 KiB
JavaScript
'use strict'
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const { expect } = require('chai')
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const {
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File,
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Snapshot,
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TextOperation,
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Change,
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EditFileOperation,
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} = require('..')
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describe('Snapshot', function () {
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describe('findBlobHashes', function () {
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it('finds blob hashes from files', function () {
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const snapshot = new Snapshot()
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const blobHashes = new Set()
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snapshot.findBlobHashes(blobHashes)
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expect(blobHashes.size).to.equal(0)
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// Add a file without a hash.
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snapshot.addFile('foo', File.fromString(''))
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snapshot.findBlobHashes(blobHashes)
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expect(blobHashes.size).to.equal(0)
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// Add a file with a hash.
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snapshot.addFile('bar', File.fromHash(File.EMPTY_FILE_HASH))
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snapshot.findBlobHashes(blobHashes)
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expect(Array.from(blobHashes)).to.have.members([File.EMPTY_FILE_HASH])
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})
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})
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describe('editFile', function () {
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let snapshot
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let operation
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beforeEach(function () {
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snapshot = new Snapshot()
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snapshot.addFile('hello.txt', File.fromString('hello'))
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operation = new TextOperation()
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operation.retain(5)
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operation.insert(' world!')
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})
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it('applies text operations to the file', function () {
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snapshot.editFile('hello.txt', operation)
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const file = snapshot.getFile('hello.txt')
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expect(file.getContent()).to.equal('hello world!')
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})
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it('rejects text operations for nonexistent file', function () {
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expect(() => {
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snapshot.editFile('does-not-exist.txt', operation)
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}).to.throw(Snapshot.EditMissingFileError)
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})
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})
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describe('applyAll', function () {
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let snapshot
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let change
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beforeEach(function () {
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snapshot = new Snapshot()
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snapshot.addFile('empty.txt', File.fromString(''))
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const badTextOp = new TextOperation()
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badTextOp.insert('FAIL!')
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const goodTextOp = new TextOperation()
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goodTextOp.insert('SUCCESS!')
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change = new Change(
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[
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new EditFileOperation('missing.txt', badTextOp),
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new EditFileOperation('empty.txt', goodTextOp),
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],
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new Date()
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)
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})
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it('ignores recoverable errors', function () {
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snapshot.applyAll([change])
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const file = snapshot.getFile('empty.txt')
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expect(file.getContent()).to.equal('SUCCESS!')
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})
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it('stops on recoverable errors in strict mode', function () {
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expect(() => {
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snapshot.applyAll([change], { strict: true })
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}).to.throw(Snapshot.EditMissingFileError)
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const file = snapshot.getFile('empty.txt')
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expect(file.getContent()).to.equal('')
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})
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})
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})
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