silverstripe-framework/tests/core/startup/ErrorControlChainTest.php

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<?php
/**
* An extension of ErrorControlChain that runs the chain in a subprocess.
*
* We need this because ErrorControlChain only suppresses uncaught fatal errors, and
* that would kill PHPUnit execution
*/
class ErrorControlChainTest_Chain extends ErrorControlChain {
// Change function visibility to be testable directly
public function translateMemstring($memstring) {
return parent::translateMemstring($memstring);
}
function executeInSubprocess($includeStderr = false) {
// Get the path to the ErrorControlChain class
$classpath = SS_ClassLoader::instance()->getItemPath('ErrorControlChain');
$suppression = $this->suppression ? 'true' : 'false';
// Start building a PHP file that will execute the chain
$src = '<'."?php
require_once '$classpath';
\$chain = new ErrorControlChain();
\$chain->setSuppression($suppression);
\$chain
";
// For each step, use reflection to pull out the call, stick in the the PHP source we're building
foreach ($this->steps as $step) {
$func = new ReflectionFunction($step['callback']);
$source = file($func->getFileName());
$start_line = $func->getStartLine() - 1;
$end_line = $func->getEndLine();
$length = $end_line - $start_line;
$src .= implode("", array_slice($source, $start_line, $length)) . "\n";
}
// Finally add a line to execute the chain
$src .= "->execute();";
// Now stick it in a temporary file & run it
$codepath = TEMP_FOLDER.'/ErrorControlChainTest_'.sha1($src).'.php';
if($includeStderr) {
$null = '&1';
} else {
$null = is_writeable('/dev/null') ? '/dev/null' : 'NUL';
}
file_put_contents($codepath, $src);
exec("php $codepath 2>$null", $stdout, $errcode);
unlink($codepath);
return array(implode("\n", $stdout), $errcode);
}
}
class ErrorControlChainTest extends SapphireTest {
protected $displayErrors = null;
function setUp() {
$this->displayErrors = (bool)ini_get('display_errors');
// Check we can run PHP at all
$null = is_writeable('/dev/null') ? '/dev/null' : 'NUL';
exec("php -v 2> $null", $out, $rv);
if ($rv != 0) {
$this->markTestSkipped("Can't run PHP from the command line - is it in your path?");
$this->skipTest = true;
}
parent::setUp();
}
public function tearDown() {
if($this->displayErrors !== null) {
ini_set('display_errors', $this->displayErrors);
$this->displayErrors = null;
}
parent::tearDown(); // TODO: Change the autogenerated stub
}
function testErrorSuppression() {
// Errors disabled by default
ini_set('display_errors', false);
$chain = new ErrorControlChain();
$whenNotSuppressed = null;
$whenSuppressed = null;
$chain->then(function($chain) use(&$whenNotSuppressed, &$whenSuppressed) {
$chain->setSuppression(true);
$whenSuppressed = ini_get('display_errors');
$chain->setSuppression(false);
$whenNotSuppressed = ini_get('display_errors');
})->execute();
// Disabled errors never un-disable
$this->assertFalse((bool)$whenNotSuppressed);
$this->assertFalse((bool)$whenSuppressed);
// Errors enabled by default
ini_set('display_errors', true);
$chain = new ErrorControlChain();
$whenNotSuppressed = null;
$whenSuppressed = null;
$chain->then(function($chain) use(&$whenNotSuppressed, &$whenSuppressed) {
$chain->setSuppression(true);
$whenSuppressed = ini_get('display_errors');
$chain->setSuppression(false);
$whenNotSuppressed = ini_get('display_errors');
})->execute();
// Errors can be suppressed an un-suppressed when initially enabled
$this->assertTrue((bool)$whenNotSuppressed);
$this->assertFalse((bool)$whenSuppressed);
// Fatal error
$chain = new ErrorControlChainTest_Chain();
list($out, $code) = $chain
->then(function(){
Foo::bar(); // Non-existant class causes fatal error
})
->thenIfErrored(function(){
echo "Done";
})
->executeInSubprocess();
$this->assertEquals('Done', $out);
// User error
$chain = new ErrorControlChainTest_Chain();
list($out, $code) = $chain
->then(function(){
user_error('Error', E_USER_ERROR);
})
->thenIfErrored(function(){
echo "Done";
})
->executeInSubprocess();
$this->assertEquals('Done', $out);
// Recoverable error
$chain = new ErrorControlChainTest_Chain();
list($out, $code) = $chain
->then(function(){
$x = function(ErrorControlChain $foo){ };
$x(1); // Calling against type
})
->thenIfErrored(function(){
echo "Done";
})
->executeInSubprocess();
$this->assertEquals('Done', $out);
// Memory exhaustion
$chain = new ErrorControlChainTest_Chain();
list($out, $code) = $chain
->then(function(){
ini_set('memory_limit', '10M');
$a = array();
while(1) $a[] = 1;
})
->thenIfErrored(function(){
echo "Done";
})
->executeInSubprocess();
$this->assertEquals('Done', $out);
// Exceptions
$chain = new ErrorControlChainTest_Chain();
list($out, $code) = $chain
->then(function(){
throw new Exception("bob");
})
->thenIfErrored(function(){
echo "Done";
})
->executeInSubprocess();
$this->assertEquals('Done', $out);
}
function testExceptionSuppression() {
$chain = new ErrorControlChainTest_Chain();
list($out, $code) = $chain
->then(function(){
throw new Exception('This exception should be suppressed');
})
->thenIfErrored(function(){
echo "Done";
})
->executeInSubprocess();
$this->assertEquals('Done', $out);
}
function testErrorControl() {
$chain = new ErrorControlChainTest_Chain();
list($out, $code) = $chain
->then(function() { echo 'preThen,'; })
->thenIfErrored(function() { echo 'preThenIfErrored,'; })
->thenAlways(function() { echo 'preThenAlways,'; })
->then(function(){ user_error('An error', E_USER_ERROR); })
->then(function() { echo 'postThen,'; })
->thenIfErrored(function() { echo 'postThenIfErrored,'; })
->thenAlways(function() { echo 'postThenAlways,'; })
->executeInSubprocess();
$this->assertEquals(
"preThen,preThenAlways,postThenIfErrored,postThenAlways,",
$out
);
}
function testSuppressionControl() {
// Turning off suppression before execution
$chain = new ErrorControlChainTest_Chain();
$chain->setSuppression(false);
list($out, $code) = $chain
->then(function($chain){
Foo::bar(); // Non-existant class causes fatal error
})
->executeInSubprocess(true);
$this->assertContains('Fatal error', $out);
$this->assertContains('Foo', $out);
// Turning off suppression during execution
$chain = new ErrorControlChainTest_Chain();
list($out, $code) = $chain
->then(function($chain){
$chain->setSuppression(false);
Foo::bar(); // Non-existent class causes fatal error
})
->executeInSubprocess(true);
$this->assertContains('Fatal error', $out);
$this->assertContains('Foo', $out);
}
function testDoesntAffectNonFatalErrors() {
$chain = new ErrorControlChainTest_Chain();
list($out, $code) = $chain
->then(function(){
$array = null;
if (@$array['key'] !== null) user_error('Error', E_USER_ERROR);
})
->then(function(){
echo "Good";
})
->thenIfErrored(function(){
echo "Bad";
})
->executeInSubprocess();
$this->assertContains("Good", $out);
}
function testDoesntAffectCaughtExceptions() {
$chain = new ErrorControlChainTest_Chain();
list($out, $code) = $chain
->then(function(){
try {
throw new Exception('Error');
}
catch (Exception $e) {
echo "Good";
}
})
->thenIfErrored(function(){
echo "Bad";
})
->executeInSubprocess();
$this->assertContains("Good", $out);
}
function testDoesntAffectHandledErrors() {
$chain = new ErrorControlChainTest_Chain();
list($out, $code) = $chain
->then(function(){
set_error_handler(function(){ /* NOP */ });
user_error('Error', E_USER_ERROR);
})
->then(function(){
echo "Good";
})
->thenIfErrored(function(){
echo "Bad";
})
->executeInSubprocess();
$this->assertContains("Good", $out);
}
function testMemoryConversion() {
$chain = new ErrorControlChainTest_Chain();
$this->assertEquals(200, $chain->translateMemstring('200'));
$this->assertEquals(300, $chain->translateMemstring('300'));
$this->assertEquals(2 * 1024, $chain->translateMemstring('2k'));
$this->assertEquals(3 * 1024, $chain->translateMemstring('3K'));
$this->assertEquals(2 * 1024 * 1024, $chain->translateMemstring('2m'));
$this->assertEquals(3 * 1024 * 1024, $chain->translateMemstring('3M'));
$this->assertEquals(2 * 1024 * 1024 * 1024, $chain->translateMemstring('2g'));
$this->assertEquals(3 * 1024 * 1024 * 1024, $chain->translateMemstring('3G'));
$this->assertEquals(200, $chain->translateMemstring('200foo'));
$this->assertEquals(300, $chain->translateMemstring('300foo'));
}
}