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fix(stryker-init): Stryker init won't create temp folder (#361)
* Refactor `StrykerTempFolder` to a class using a singleton * Add `initialize` method for the actual initialization of the folder. * Rename `StrykerTempFolder` -> `TempFolder` * Add unit tests for TempFolder
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| import * as fs from 'mz/fs'; | ||
| import * as path from 'path'; | ||
| import * as mkdirp from 'mkdirp'; | ||
| import * as log4js from 'log4js'; | ||
| import { deleteDir } from './fileUtils'; | ||
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| const log = log4js.getLogger('TempFolder'); | ||
|
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| export class TempFolder { | ||
| baseTempFolder: string; | ||
| tempFolder: string; | ||
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| private constructor() { } | ||
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| initialize(tempDirName = '.stryker-tmp') { | ||
| this.baseTempFolder = path.join(process.cwd(), tempDirName); | ||
| this.tempFolder = path.join(this.baseTempFolder, this.random().toString()); | ||
| mkdirp.sync(this.baseTempFolder); | ||
| mkdirp.sync(this.tempFolder); | ||
| } | ||
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| /** | ||
| * Creates a new random folder with the specified prefix. | ||
| * @param prefix The prefix. | ||
| * @returns The path to the folder. | ||
| */ | ||
| createRandomFolder(prefix: string): string { | ||
| if (!this.baseTempFolder) { | ||
| throw new Error('initialize() was not called!'); | ||
| } | ||
| let dir = this.baseTempFolder + path.sep + prefix + this.random(); | ||
| mkdirp.sync(dir); | ||
| return dir; | ||
| } | ||
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| /** | ||
| * Writes data to a specified file. | ||
| * @param filename The path to the file. | ||
| * @param data The content of the file. | ||
| * @returns A promise to eventually save the file. | ||
| */ | ||
| writeFile(filename: string, data: string): Promise<void> { | ||
| return fs.writeFile(filename, data, { encoding: 'utf8' }); | ||
| } | ||
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| /** | ||
| * Copies a file. | ||
| * @param fromFilename The path to the existing file. | ||
| * @param toFilename The path to copy the file to. | ||
| * @param instrumenter An optional additional instrumenter to stream the file through | ||
| * @returns A promise to eventually copy the file. | ||
| */ | ||
| copyFile(fromFilename: string, toFilename: string, instrumenter: NodeJS.ReadWriteStream | null): Promise<void> { | ||
| return new Promise<void>((resolve, reject) => { | ||
| let readStream: NodeJS.ReadableStream = fs.createReadStream(fromFilename, { encoding: 'utf8' }); | ||
| let writeStream = fs.createWriteStream(toFilename); | ||
| readStream.on('error', reject); | ||
| writeStream.on('error', reject); | ||
| if (instrumenter) { | ||
| readStream = readStream.pipe(instrumenter); | ||
| } | ||
| readStream.pipe(writeStream); | ||
| readStream.on('end', () => resolve()); | ||
| }); | ||
| } | ||
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| /** | ||
| * Deletes the Stryker-temp folder | ||
| */ | ||
| clean() { | ||
| if (!this.baseTempFolder) { | ||
| throw new Error('initialize() was not called!'); | ||
| } | ||
| log.debug(`Deleting stryker temp folder ${this.baseTempFolder}`); | ||
| return deleteDir(this.baseTempFolder) | ||
| .catch(() => log.info(`Failed to delete stryker temp folder ${this.baseTempFolder}`)); | ||
| } | ||
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| /** | ||
| * Creates a random integer number. | ||
| * @returns A random integer. | ||
| */ | ||
| random(): number { | ||
| return Math.ceil(Math.random() * 10000000); | ||
| } | ||
|
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| private static _instance: TempFolder; | ||
| static instance() { | ||
| if (!this._instance) { | ||
| this._instance = new TempFolder(); | ||
| } | ||
| return this._instance; | ||
| } | ||
| } | ||
|
|
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