Fix encoding (#394)

* fix encoding issue

Author: DonJayamanne

src/client/common/process/proc.ts

@@ -22,6 +22,9 @@ export class ProcessService implements IProcessService {
 
  // Always ensure we have unbuffered output.
  spawnOptions.env.PYTHONUNBUFFERED = '1';
+ if (!spawnOptions.env.PYTHONIOENCODING) {
+ spawnOptions.env.PYTHONIOENCODING = 'utf-8';
+ }
 
  const proc = spawn(file, args, spawnOptions);
  let procExited = false;
@@ -78,7 +81,9 @@ export class ProcessService implements IProcessService {
 
  // Always ensure we have unbuffered output.
  spawnOptions.env.PYTHONUNBUFFERED = '1';
-
+ if (!spawnOptions.env.PYTHONIOENCODING) {
+ spawnOptions.env.PYTHONIOENCODING = 'utf-8';
+ }
  const proc = spawn(file, args, spawnOptions);
  const deferred = createDeferred<ExecutionResult<string>>();
  const disposables: Disposable[] = [];

src/test/common/process/proc.exec.test.ts

@@ -32,6 +32,16 @@ suite('ProcessService', () => {
  expect(result.stderr).to.equal(undefined, 'stderr not undefined');
  });
 
+ test('exec should output print unicode characters', async () => {
+ const procService = new ProcessService(new BufferDecoder());
+ const printOutput = 'öä';
+ const result = await procService.exec(pythonPath, ['-c', `print(u"${printOutput}")`]);
+
+ expect(result).not.to.be.an('undefined', 'result is undefined');
+ expect(result.stdout.trim()).to.be.equal(printOutput, 'Invalid output');
+ expect(result.stderr).to.equal(undefined, 'stderr not undefined');
+ });
+
  test('exec should wait for completion of program with new lines', async function () {
  // tslint:disable-next-line:no-invalid-this
  this.timeout(5000);