vfsStreamFile example

  protected function setUp(): void {
    parent::setUp();

    $poHeader = $this->prophesize(PoHeader::class);
    $poHeader->__toString()->willReturn('');
    $this->poWriter = new PoStreamWriter();
    $this->poWriter->setHeader($poHeader->reveal());

    $root = vfsStream::setup();
    $this->poFile = new vfsStreamFile('powriter.po');
    $root->addChild($this->poFile);
  }

  /** * @covers ::getURI */
  public function testGetUriException() {
    $this->expectException(\Exception::class);
    $this->expectExceptionMessage('No URI set.');

    $this->poWriter->getURI();
  }