First commit

vendor/psy/psysh/test/Psy/Test/CodeCleaner/LoopContextPassTest.php

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+<?php
+
+/*
+ * This file is part of Psy Shell.
+ *
+ * (c) 2012-2017 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Test\CodeCleaner;
+
+use PhpParser\NodeTraverser;
+use Psy\CodeCleaner\LoopContextPass;
+
+class LoopContextPassTest extends CodeCleanerTestCase
+{
+    public function setUp()
+    {
+        $this->pass      = new LoopContextPass();
+        $this->traverser = new NodeTraverser();
+        $this->traverser->addVisitor($this->pass);
+    }
+
+    /**
+     * @dataProvider invalidStatements
+     * @expectedException \Psy\Exception\FatalErrorException
+     */
+    public function testProcessStatementFails($code)
+    {
+        $stmts = $this->parse($code);
+        $this->traverser->traverse($stmts);
+    }
+
+    public function invalidStatements()
+    {
+        return array(
+            array('continue'),
+            array('break'),
+            array('if (true) { continue; }'),
+            array('if (true) { break; }'),
+            array('if (false) { continue; }'),
+            array('if (false) { break; }'),
+            array('function foo() { break; }'),
+            array('function foo() { continue; }'),
+
+            // actually enforce break/continue depth argument
+            array('do { break 2; } while (true)'),
+            array('do { continue 2; } while (true)'),
+            array('for ($a; $b; $c) { break 2; }'),
+            array('for ($a; $b; $c) { continue 2; }'),
+            array('foreach ($a as $b) { break 2; }'),
+            array('foreach ($a as $b) { continue 2; }'),
+            array('switch (true) { default: break 2; }'),
+            array('switch (true) { default: continue 2; }'),
+            array('while (true) { break 2; }'),
+            array('while (true) { continue 2; }'),
+
+            // invalid in 5.4+ because they're floats
+            // ... in 5.3 because the number is too big
+            array('while (true) { break 2.0; }'),
+            array('while (true) { continue 2.0; }'),
+
+            // and once with nested loops, just for good measure
+            array('while (true) { while (true) { break 3; } }'),
+            array('while (true) { while (true) { continue 3; } }'),
+        );
+    }
+
+    /**
+     * @dataProvider invalidPHP54Statements
+     * @expectedException \Psy\Exception\FatalErrorException
+     */
+    public function testPHP54ProcessStatementFails($code)
+    {
+        if (version_compare(PHP_VERSION, '5.4.0', '<')) {
+            $this->markTestSkipped();
+        }
+
+        $stmts = $this->parse($code);
+        $this->traverser->traverse($stmts);
+    }
+
+    public function invalidPHP54Statements()
+    {
+        return array(
+            // In PHP 5.4+, only positive literal integers are allowed
+            array('while (true) { break $n; }'),
+            array('while (true) { continue $n; }'),
+            array('while (true) { break N; }'),
+            array('while (true) { continue N; }'),
+            array('while (true) { break 0; }'),
+            array('while (true) { continue 0; }'),
+            array('while (true) { break -1; }'),
+            array('while (true) { continue -1; }'),
+            array('while (true) { break 1.0; }'),
+            array('while (true) { continue 1.0; }'),
+        );
+    }
+
+    /**
+     * @dataProvider validStatements
+     */
+    public function testProcessStatementPasses($code)
+    {
+        $stmts = $this->parse($code);
+        $this->traverser->traverse($stmts);
+
+        // @todo a better thing to assert here?
+        $this->assertTrue(true);
+    }
+
+    public function validStatements()
+    {
+        return array(
+            array('do { break; } while (true)'),
+            array('do { continue; } while (true)'),
+            array('for ($a; $b; $c) { break; }'),
+            array('for ($a; $b; $c) { continue; }'),
+            array('foreach ($a as $b) { break; }'),
+            array('foreach ($a as $b) { continue; }'),
+            array('switch (true) { default: break; }'),
+            array('switch (true) { default: continue; }'),
+            array('while (true) { break; }'),
+            array('while (true) { continue; }'),
+
+            // `break 1` is redundant, but not invalid
+            array('while (true) { break 1; }'),
+            array('while (true) { continue 1; }'),
+
+            // and once with nested loops just for good measure
+            array('while (true) { while (true) { break 2; } }'),
+            array('while (true) { while (true) { continue 2; } }'),
+        );
+    }
+}