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// Copyright (c) Microsoft Corporation. All rights reserved.

// Licensed under the MIT License.

'use strict';

import { ChildProcess, spawn, SpawnOptions } from 'child_process';

import * as path from 'path';

import { DebugClient } from 'vscode-debugadapter-testsupport';

import { EXTENSION_ROOT_DIR } from '../../client/common/constants';

import { noop } from '../../client/common/utils/misc';

export class DebugClientEx extends DebugClient {

private adapterProcess: ChildProcess | undefined;

constructor(private executable: string, debugType: string, private coverageDirectory: string, private spawnOptions?: SpawnOptions) {

super('node', '', debugType, spawnOptions);

}

/**

* Starts a new debug adapter and sets up communication via stdin/stdout.

* If a port number is specified the adapter is not launched but a connection to

* a debug adapter running in server mode is established. This is useful for debugging

* the adapter while running tests. For this reason all timeouts are disabled in server mode.

*/

public start(port?: number): Promise<void> {

return new Promise((resolve, reject) => {

const runtime = path.join(EXTENSION_ROOT_DIR, 'node_modules', '.bin', 'istanbul');

const args = ['cover', '--report=json', '--print=none', `--dir=${this.coverageDirectory}`, '--handle-sigint', this.executable];

this.adapterProcess = spawn(runtime, args, this.spawnOptions);

this.adapterProcess.stderr.on('data', noop);

this.adapterProcess.on('error', (err) => {

console.error(err);

reject(err);

});

this.adapterProcess.on('exit', noop);

this.connect(this.adapterProcess.stdout, this.adapterProcess.stdin);

resolve();

});

}

public stop(): Promise<void> {

return this.disconnectRequest().then(this.stopAdapterProcess).catch(this.stopAdapterProcess);

}

private stopAdapterProcess = () => {

if (this.adapterProcess) {

this.adapterProcess.kill();

this.adapterProcess = undefined;

}

}

}