minor #19097 [Console] Test SymfonyStyle::ask() output (chalasr)

This PR was merged into the 3.2-dev branch.

Discussion
----------

[Console] Test SymfonyStyle::ask() output

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | ~
| License       | MIT
| Doc PR        | ~

Now that we can test an interactive command that uses SymfonyStyle (after #18999), we should test their output.

Commits
-------

e870758 [Console] Test SymfonyStyle::ask() output

src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/interactive_command_1.php

@@ -0,0 +1,19 @@
+<?php
+
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Tests\Style\SymfonyStyleWithForcedLineLength;
+
+//Ensure that questions have the expected outputs
+return function (InputInterface $input, OutputInterface $output) {
+    $output = new SymfonyStyleWithForcedLineLength($input, $output);
+    $stream = fopen('php://memory', 'r+', false);
+
+    fputs($stream, "Foo\nBar\nBaz");
+    rewind($stream);
+    $input->setStream($stream);
+
+    $output->ask('What\'s your name?');
+    $output->ask('How are you?');
+    $output->ask('Where do you come from?');
+};

src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/output/interactive_output_1.txt

@@ -0,0 +1,7 @@
+
+ What's your name?:
+ > 
+ How are you?:
+ > 
+ Where do you come from?:
+ > 

src/Symfony/Component/Console/Tests/Style/SymfonyStyleTest.php

@@ -48,6 +48,24 @@ public function testOutputs($inputCommandFilepath, $outputFilepath)
         $this->assertStringEqualsFile($outputFilepath, $this->tester->getDisplay(true));
     }
 
+    /**
+     * @dataProvider inputInteractiveCommandToOutputFilesProvider
+     */
+    public function testInteractiveOutputs($inputCommandFilepath, $outputFilepath)
+    {
+        $code = require $inputCommandFilepath;
+        $this->command->setCode($code);
+        $this->tester->execute(array(), array('interactive' => true, 'decorated' => false));
+        $this->assertStringEqualsFile($outputFilepath, $this->tester->getDisplay(true));
+    }
+
+    public function inputInteractiveCommandToOutputFilesProvider()
+    {
+        $baseDir = __DIR__.'/../Fixtures/Style/SymfonyStyle';
+
+        return array_map(null, glob($baseDir.'/command/interactive_command_*.php'), glob($baseDir.'/output/interactive_output_*.txt'));
+    }
+
     public function inputCommandToOutputFilesProvider()
     {
         $baseDir = __DIR__.'/../Fixtures/Style/SymfonyStyle';