Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/symfony/console/Tests/Fixtures/Style/SymfonyStyle/command/command_0.php

@@ -0,0 +1,11 @@
+<?php
+
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+//Ensure has single blank line at start when using block element
+return function (InputInterface $input, OutputInterface $output) {
+    $output = new SymfonyStyle($input, $output);
+    $output->caution('Lorem ipsum dolor sit amet');
+};

vendor/symfony/console/Tests/Fixtures/Style/SymfonyStyle/command/command_1.php

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+<?php
+
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+//Ensure has single blank line between titles and blocks
+return function (InputInterface $input, OutputInterface $output) {
+    $output = new SymfonyStyle($input, $output);
+    $output->title('Title');
+    $output->warning('Lorem ipsum dolor sit amet');
+    $output->title('Title');
+};

vendor/symfony/console/Tests/Fixtures/Style/SymfonyStyle/command/command_2.php

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+<?php
+
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+//Ensure has single blank line between blocks
+return function (InputInterface $input, OutputInterface $output) {
+    $output = new SymfonyStyle($input, $output);
+    $output->warning('Warning');
+    $output->caution('Caution');
+    $output->error('Error');
+    $output->success('Success');
+    $output->note('Note');
+    $output->block('Custom block', 'CUSTOM', 'fg=white;bg=green', 'X ', true);
+};

vendor/symfony/console/Tests/Fixtures/Style/SymfonyStyle/command/command_3.php

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+<?php
+
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+//Ensure has single blank line between two titles
+return function (InputInterface $input, OutputInterface $output) {
+    $output = new SymfonyStyle($input, $output);
+    $output->title('First title');
+    $output->title('Second title');
+};

vendor/symfony/console/Tests/Fixtures/Style/SymfonyStyle/command/command_4.php

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+<?php
+
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+//Ensure has single blank line after any text and a title
+return function (InputInterface $input, OutputInterface $output) {
+    $output = new SymfonyStyle($input, $output);
+
+    $output->write('Lorem ipsum dolor sit amet');
+    $output->title('First title');
+
+    $output->writeln('Lorem ipsum dolor sit amet');
+    $output->title('Second title');
+
+    $output->write('Lorem ipsum dolor sit amet');
+    $output->write('');
+    $output->title('Third title');
+
+    //Ensure edge case by appending empty strings to history:
+    $output->write('Lorem ipsum dolor sit amet');
+    $output->write(array('', '', ''));
+    $output->title('Fourth title');
+
+    //Ensure have manual control over number of blank lines:
+    $output->writeln('Lorem ipsum dolor sit amet');
+    $output->writeln(array('', '')); //Should append an extra blank line
+    $output->title('Fifth title');
+
+    $output->writeln('Lorem ipsum dolor sit amet');
+    $output->newLine(2); //Should append an extra blank line
+    $output->title('Fifth title');
+};

vendor/symfony/console/Tests/Fixtures/Style/SymfonyStyle/command/command_5.php

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+<?php
+
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+//Ensure has proper line ending before outputing a text block like with SymfonyStyle::listing() or SymfonyStyle::text()
+return function (InputInterface $input, OutputInterface $output) {
+    $output = new SymfonyStyle($input, $output);
+
+    $output->writeln('Lorem ipsum dolor sit amet');
+    $output->listing(array(
+        'Lorem ipsum dolor sit amet',
+        'consectetur adipiscing elit',
+    ));
+
+    //Even using write:
+    $output->write('Lorem ipsum dolor sit amet');
+    $output->listing(array(
+        'Lorem ipsum dolor sit amet',
+        'consectetur adipiscing elit',
+    ));
+
+    $output->write('Lorem ipsum dolor sit amet');
+    $output->text(array(
+        'Lorem ipsum dolor sit amet',
+        'consectetur adipiscing elit',
+    ));
+};

vendor/symfony/console/Tests/Fixtures/Style/SymfonyStyle/command/command_6.php

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+<?php
+
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+//Ensure has proper blank line after text block when using a block like with SymfonyStyle::success
+return function (InputInterface $input, OutputInterface $output) {
+    $output = new SymfonyStyle($input, $output);
+
+    $output->listing(array(
+        'Lorem ipsum dolor sit amet',
+        'consectetur adipiscing elit',
+    ));
+    $output->success('Lorem ipsum dolor sit amet');
+};

vendor/symfony/console/Tests/Fixtures/Style/SymfonyStyle/command/command_7.php

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+<?php
+
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+//Ensure questions do not output anything when input is non-interactive
+return function (InputInterface $input, OutputInterface $output) {
+    $output = new SymfonyStyle($input, $output);
+    $output->title('Title');
+    $output->askHidden('Hidden question');
+    $output->choice('Choice question with default', array('choice1', 'choice2'), 'choice1');
+    $output->confirm('Confirmation with yes default', true);
+    $output->text('Duis aute irure dolor in reprehenderit in voluptate velit esse');
+};