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splitting out web test case and unit test case

pull/507/head
vagrant 11 years ago
parent
8431310f8f
commit
ecdc28d619
4 changed files with 8 additions and 1392 deletions
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  1. 6
      islandora.info
  2. 9
      tests/datastream_validator_tests.test
  3. 781
      tests/datastream_validators.inc
  4. 604
      tests/islandora_web_test_case.inc

6
islandora.info
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@ -13,7 +13,10 @@ files[] = includes/dublin_core.inc
files[] = includes/tuque.inc
files[] = includes/tuque_wrapper.inc
files[] = includes/object.entity_controller.inc
files[] = tests/islandora_web_test_case.inc
files[] = tests/includes/datastream_validators.inc
files[] = tests/includes/islandora_web_test_case.inc
files[] = tests/includes/islandora_unit_test_case.inc
files[] = tests/includes/utilities.inc
files[] = tests/authtokens.test
files[] = tests/hooks.test
files[] = tests/ingest.test
@ -22,6 +25,5 @@ files[] = tests/islandora_manage_permissions.test
files[] = tests/datastream_versions.test
files[] = tests/datastream_cache.test
files[] = tests/derivatives.test
files[] = tests/islandora_manage_temp_file.test
files[] = tests/datastream_validator_tests.test
php = 5.3

9
tests/datastream_validator_tests.test
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@ -4,8 +4,6 @@
* Tests for things that test tests. Madness.
*/
include 'datastream_validators.inc';
/**
* A test DatastreamValidator for the DatastreamValidatorResultTestCase.
*/
@ -62,7 +60,7 @@ class DatastreamValidatorResultTestCase extends IslandoraWebTestCase {
* Generates a generic DatastreamValidatorResult and grabs its properties.
*/
public function testDatastreamValidatorResult() {
$result = new DatastreamValidatorResult(TRUE, 'true', array());
$result = new IslandoraTestUtilityResult(TRUE, 'true', array());
$this->assertEqual($result->getMessage(), 'true', "Result message generated correctly.", 'Islandora');
$this->assertEqual($result->getType(), TRUE, "Result type generated correctly.", 'Islandora');
$this->assertEqual($result->getCaller(), array(), "Result caller generated correctly.", 'Islandora');
@ -111,10 +109,11 @@ class DatastreamValidatorResultTestCase extends IslandoraWebTestCase {
$this->assertTrue(substr($first_caller['file'], -48) === substr($second_caller['file'], -48), "Fail caller file matches the pass caller file.", 'Islandora');
$this->assertTrue($first_caller['function'] === 'TestDatastreamValidator->assertSomethingSuccessfully()', "Correct pass caller function returned (actual: {$first_caller['function']}; expected: TestDatastreamValidator->assertSomethingSuccessfully()).", 'Islandora');
$this->assertTrue($second_caller['function'] === 'TestDatastreamValidator->assertSomethingFailed()', "Correct fail caller function returned (actual: {$second_caller['function']}; expected: TestDatastreamValidator->assertSomethingFailed()).", 'Islandora');
$this->assertTrue($first_caller['line'] === 18, "Correct pass line number returned (actual: {$first_caller['line']}; expected: 9).", 'Islandora');
$this->assertTrue($second_caller['line'] === 25, "Correct fail line number returned (actual: {$second_caller['line']}; expected: 13).", 'Islandora');
$this->assertTrue($first_caller['line'] === 16, "Correct pass line number returned (actual: {$first_caller['line']}; expected: 16).", 'Islandora');
$this->assertTrue($second_caller['line'] === 23, "Correct fail line number returned (actual: {$second_caller['line']}; expected: 23).", 'Islandora');
}
}
}
/**

781
tests/datastream_validators.inc
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@ -1,781 +0,0 @@
<?php
/**
* @file
* Classes and functions for datastream validation.
*/
/**
* Converts a hexidecimal string to an integer.
*
* This is useful for running checks on values that appear in the binary
* of a datastream. Returns FALSE if the hex value contains non-hex characters
* or if the string would not return a 16- or 32-bit formatted big-endian
* signed integer.
*
* @param string $hex
* The hexidecimal string.
*
* @throws Exception
* if something horrible happens during the actual conversion.
*
* @return bool|int
* FALSE on failure, or the integer on success.
*/
function islandora_hex2int($hex) {
// A couple of quick string checks.
if (!ctype_xdigit($hex)) {
drupal_set_message(t('String passed to islandora_hex2int() contains non-hexidecimal characters.'), 'error');
return FALSE;
}
if (!strlen($hex) === 4 || !strlen($hex) === 8) {
drupal_set_message(t('String passed to islandora_hex2int() cannot create a 16- or 32-bit little-endian signed integer'), 'error');
return FALSE;
}
// The actual conversion.
try {
$reverse_hex = implode('', array_reverse(str_split($hex, 2)));
$int = hexdec($reverse_hex);
return $int;
}
catch (Exception $e) {
throw new Exception('An error occurred during the conversion of hexidecimal to integer.', 0, $e);
}
}
/**
* A result from a datastream validator; $type defines TRUE/FALSE as pass/fail.
*/
class DatastreamValidatorResult {
/**
* The message for this result.
*
* @var string
*/
protected $message;
/**
* The caller for this result.
*
* @var array
*/
protected $caller;
/**
* The type of result this is - TRUE for pass, FALSE for fail.
*
* @var bool
*/
protected $type;
/**
* Constructs a DatastreamValidatorResult.
*
* @param bool $type
* Whether this result should indicate a pass (TRUE) or fail (FALSE).
* @param string $message
* The message that will be used by this result.
* @param array $caller
* The caller for this result.
*/
public function __construct($type, $message, array $caller) {
$this->message = $message;
$this->caller = $caller;
$this->type = $type;
}
/**
* Get the message for this result.
*
* @return string
* The message for this result.
*/
public function getMessage() {
return $this->message;
}
/**
* Get the caller for this result.
*
* @return string
* The caller for this result.
*/
public function getCaller() {
return $this->caller;
}
/**
* Get the type of result.
*
* @return bool
* The type of pass (TRUE for pass, FALSE for fail).
*/
public function getType() {
return $this->type;
}
}
/**
* Abstraction for datastream validators.
*
* Classes extended from DatastreamValidator don't require much to be useful.
* They accept an IslandoraFedoraObject and a DSID to perform assertions on;
* all you have to do is place a series of functions inside the extended class
* using the naming convention assertThing(); each of these functions should
* ideally assert one thing and one thing only (for simplicity's sake), and
* should generate either a pass or a fail message by calling addPass() or
* addFail(). That's it, really; they don't have to return any values, as
* addPass() and addFail() just add messages to the overall pass/fail array.
*
* As long as you use those rules and naming conventions, all the magic is done
* when you instantiate the new datastream validator object.
*
* The IslandoraWebTestCase::assertDatastreams() function accepts paired DSIDs
* and datastream validator names in order to do the rest of the work. It grabs
* all the test results using getPasses() and getFails() and transforms those
* into something that DrupalWebTestCase can use.
*/
abstract class DatastreamValidator {
/**
* The IslandoraFedoraObject containing the datastream to test.
*
* @var IslandoraFedoraObject
*/
public $object;
/**
* The DSID of the string to test.
*
* @var string
*/
public $datastream;
/**
* The content of the datastream.
*
* @var string[]
*/
public $datastreamContent;
/**
* An array of DatastreamValidatorResults.
*
* These should be generated using $this->addResult.
*
* @var DatastreamValidatorResult[]
*/
public $results = array();
/**
* An array of additional required parameters.
*
* @var array
*/
public $params = array();
/**
* Constructs a DatastreamValidator.
*
* @param IslandoraFedoraObject $object
* The object to grab the datastream from.
* @param string $datastream
* The DSID of the datastream itself.
* @param array $params
* An extra array of parameters the validator might need.
*/
public function __construct(IslandoraFedoraObject $object, $datastream, array $params = array()) {
$this->object = $object;
$this->datastream = $datastream;
$this->params = $params;
if ($object[$datastream]) {
$this->datastreamContent = $object[$datastream]->content;
}
else {
drupal_set_message(t("Error grabbing content from datastream %datastream in object %id", array(
'%datastream' => $datastream,
'%id' => $object->id,
)), 'error');
}
}
/**
* Helper function to run all the validators in a class.
*
* On DatastreamValidator::__construct(), this looks for any functions
* within the class beginning in "assert" and runs them. In all current cases
* (and realistically in all future cases), this adds one or more passes or
* fails to $this->passes and/or $this->fails.
*/
public function runValidators() {
$methods = get_class_methods($this);
foreach ($methods as $method) {
if (substr($method, 0, 6) === 'assert') {
$this->$method();
}
}
}
/**
* Returns an array of DatastreamValidatorResults.
*
* @return DatastreamValidatorResult[]
* The results.
*/
public function getResults() {
if (empty($this->results)) {
$this->runValidators();
}
return $this->results;
}
/**
* Adds a result to $this->results.
*
* @param bool $type
* The type of result (TRUE for pass, FALSE for fail).
* @param string $message
* The message to put in the result.
*/
public function addResult($type, $message) {
$result = new DatastreamValidatorResult($type, $message, $this->getAssertionCall());
$this->results[] = $result;
}
/**
* Cycles through backtrace until the first non-assertion method is found.
*
* This is a manipulated version of DrupalWebTestCase::getAssertionCall().
* We use it here so that we can pass back assertion calls from
* DatastreamValidator assertions instead of less useful TestCase functions.
*
* @return array
* Array representing the true caller.
*/
protected function getAssertionCall() {
$backtrace = debug_backtrace();
// While the current caller's function starts with 'assert', and another one
// exists after this function, keep poppin' em off.
while (substr($backtrace[1]['function'], 0, 6) !== 'assert' && isset($backtrace[2])) {
array_shift($backtrace);
}
return _drupal_get_last_caller($backtrace);
}
}
/**
* Asserts that an object's given datastreams are common-type image files.
*
* Uses PHPGD to run the assertion check. This means that only certain kinds
* of image files can be checked. Please check the documentation for the PHPGD
* imagecreatefromstring() function to determine what filetypes are valid.
*/
class ImageDatastreamValidator extends DatastreamValidator {
/**
* Asserts the validity of an image using PHPGD.
*/
protected function assertImageGeneration() {
$assertion = imagecreatefromstring($this->datastreamContent) !== FALSE;
$pass = "Image datastream {$this->datastream} is valid.";
$fail = "Image datastream {$this->datastream} is either invalid or corrupt.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
}
/**
* Asserts the validity of any .tif/.tiff datastream.
*/
class TIFFDatastreamValidator extends DatastreamValidator {
/**
* Asserts that the TIFF contains an appropriate header.
*/
public function assertTIFFHeaderHex() {
$datastream_header_hex = self::getTIFFHeaderHex();
if ($datastream_header_hex == "49492a00") {
// In this case, the ingested TIFF is designated as using the "Intel
// byte-order" (i.e. little-endian) by starting with the characters "II"
// (repeated so that byte order does not yet need to be significant).
// The number that follows is '42' in little-endian hex, a number of
// 'deep philosophical significance' to the TIFF format creators.'
$this->addResult(TRUE, "{$this->datastream} datastream asserts that it is a valid Intel-byte-orderded TIF/TIFF file.");
}
elseif ($datastream_header_hex == "4d4d002a") {
// In this case, the ingested TIFF is designated as using the "Motorola
// byte-order" (i.e. big-endian) by starting with the characters "MM"
// instead. 42 follows once again, this time in big-endian hex.
$this->addResult(TRUE, "{$this->datastream} datastream asserts that it is a valid Motorola-byte-ordered TIF/TIFF file.");
}
else {
$this->addResult(FALSE, "{$this->datastream} datastream does not assert that it is a valid TIF/TIFF file.");
}
}
/**
* Grabs the first 8 characters from the TIFF datastream's hex.
*
* @return string
* The ... thing I just wrote up there.
*/
protected function getTIFFHeaderHex() {
return substr(bin2hex($this->datastreamContent), 0, 8);
}
}
/**
* Asserts the validity of a JP2 datastream.
*/
class JP2DatastreamValidator extends DatastreamValidator {
/**
* Asserts the hex values at the head of the JP2 file.
*
* JP2 files begin with an offset header at the second 32-bit integer,
* 0x6A502020. This header is in all .jp2s, and we check for it here.
*/
protected function assertJP2Header() {
$assertion = substr(bin2hex($this->datastreamContent), 8, 8) == '6a502020';
$pass = "Datastream {$this->datastream} contains the appropriate JP2 header.";
$fail = "Datastream {$this->datastream} does not contain the appropriate JP2 header.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
/**
* Asserts the marker at the end of the JP2 file.
*
* JP2 files have their codestream capped with a marker, 0xFFD9. We're just
* checking for it here to see if the .jp2 encoder finished okay.
*/
protected function assertJP2Marker() {
$assertion = substr(bin2hex($this->datastreamContent), strlen(bin2hex($this->datastreamContent)) - 4, 4) == 'ffd9';
$pass = "Datastream {$this->datastream} contains the appropriate JP2 ending marker.";
$fail = "Datastream {$this->datastream} does not contain the appropriate JP2 ending marker. If this is the only JP2 validator that failed, it is likely that derivative generation was interrupted.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
}
/**
* Asserts the validity of a PDF datastream.
*/
class PDFDatastreamValidator extends DatastreamValidator {
/**
* Validates the PDF signature.
*/
protected function assertPDFSignature() {
$assertion = substr($this->datastreamContent, 0, 5) == '%PDF-';
$pdf_version = substr($this->datastreamContent, 5, 3);
$pass = "{$this->datastream} datastream asserts that it is a valid PDF file using PDF version {$pdf_version}";
$fail = "{$this->datastream} datastream binary header appears to be corrupt and missing a valid PDF signature.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
/**
* Counts the number of signatures in this PDF file and asserts there are any.
*/
protected function assertPDFStreamCount() {
$pdf_stream_count = substr_count(bin2hex($this->datastreamContent), '0a73747265616d0a');
$assertion = $pdf_stream_count !== 0;
$pass = "{$this->datastream} datastream reports the existence of {$pdf_stream_count} PDF streams. Note that an extremely low number could still indicate corruption.";
$fail = "{$this->datastream} datastream contains zero PDF streams, and is likely not a PDF file.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
/**
* Validates the PDF closing tag.
*
* @return bool
* TRUE if it was present; FALSE otherwise.
*/
protected function assertPDFClosingTag() {
$assertion = strpos(bin2hex($this->datastreamContent), '0a2525454f460a') == TRUE;
$pass = "{$this->datastream} datastream reports the existence of the closing 'EOF' tag required at the end of PDFs";
$fail = "{$this->datastream} datastream does not contain the closing 'EOF' tag. If this is the only PDF validation that failed, it is likely that derivative generation was interrupted.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
}
/**
* Validates the number of times a string occurs in a datastream.
*
* Requires $this->params to be set to an array containing two keys - the first
* is the string we're looking to find in the datastream, and the second is an
* integer representing the number of times it should appear in the datastream.
*/
class TextDatastreamValidator extends DatastreamValidator {
/**
* Constructor override; blow up if we don't have our two values.
*/
public function __construct(IslandoraFedoraObject $object, $datastream, array $params = array()) {
if (count($params) < 2) {
throw new InvalidArgumentException('$params must contain at least two values to instantiate a TextDatastreamValidator.');
}
parent::__construct($object, $datastream, $params);
}
/**
* Asserts that the string given appears the correct number of times.
*/
protected function assertTextStringCount() {
$string_count = self::getTextStringCount();
list($string, $expected) = $this->params;
$assertion = $string_count === $expected;
$this->addResult($assertion, "{$this->datastream} datastream contains the word(s) '{$string}' repeated {$string_count} time(s) (expected: {$expected}).");
}
/**
* The number of times key [0] in $this->params appears in the datastream.
*
* @return int
* That count I just mentioned up there.
*/
protected function getTextStringCount() {
return substr_count($this->datastreamContent, $this->params[0]);
}
}
/**
* Asserts the validity a WAV datastream.
*
* WAV files contain a rigidly detailed header that contains all sorts of fun
* information we can use to validate things against other things. So, we check
* rigorously that the header contains properly constructed data by looking to
* see if certain values are at their expected byte offset. We also compare
* declared chunk sizes against actual sizes. If any of these are off, WAV
* players will fail to function.
*/
class WAVDatastreamValidator extends DatastreamValidator {
/**
* We need a special constructor here to get the hex datastream content.
*
* @param IslandoraFedoraObject $object
* The object to grab the datastream from.
* @param string $datastream
* The DSID of the datastream itself.
* @param array $params
* An extra array of parameters the validator might need.
*/
public function __construct(IslandoraFedoraObject $object, $datastream, array $params = array()) {
parent::__construct($object, $datastream, $params);
$this->datastreamContent = bin2hex($this->datastreamContent);
}
/**
* Asserts that the datastream contains a valid WAV signature.
*/
protected function assertWAVSignature() {
$signatures = str_split(substr($this->datastreamContent, 0, 24), 8);
$assertion = $signatures[0] == '52494646' && $signatures[2] == '57415645';
$pass = "Header of the {$this->datastream} datastream contains a valid file signature.";
$fail = "Header of the {$this->datastream} datastream contains corrupt file signature.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
/**
* Asserts that the chunksize in the header is correct.
*/
protected function assertWAVChunkSize() {
$assertion = islandora_hex2int(substr($this->datastreamContent, 8, 8)) === 36 + self::getDataSubChunkSize();
$pass = "{$this->datastream} datastream chunksize in WAV header is correct";
$fail = "{$this->datastream} datastream chunksize in WAV header does not match actual chunksize.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
/**
* Asserts that the datastream contains a 'fmt' subchunk.
*/
protected function assertWAVFmtSubChunk() {
$assertion = substr($this->datastreamContent, 24, 8) === '666d7420';
$pass = "{$this->datastream} datastream contains a 'fmt' subchunk.";
$fail = "{$this->datastream} datastream is missing the required 'fmt' subchunk.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
/**
* Asserts that the byterate reported by the WAV header is valid.
*/
protected function assertWAVByteRate() {
$wav_samplerate = islandora_hex2int(substr($this->datastreamContent, 48, 8));
$assertion = islandora_hex2int(substr($this->datastreamContent, 56, 8)) === $wav_samplerate * self::getNumChannels() * self::getBytesPerSample();
$pass = "{$this->datastream} datastream byterate in the WAV header is correct.";
$fail = "{$this->datastream} datastream byterate in the WAV header does not match actual calculated byterate.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
/**
* Asserts that the block alignment is correct.
*/
protected function assertWAVBlockAlignment() {
$assertion = islandora_hex2int(substr($this->datastreamContent, 64, 4)) === self::getNumChannels() * self::getBytesPerSample();
$pass = "{$this->datastream} datastream block alignment is set correctly.";
$fail = "{$this->datastream} datastream block alignment is off.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
/**
* Asserts the existence of a 'data' subchunk.
*
* Also asserts that the subchunk size is correct.
*/
protected function assertWAVDataSubChunk() {
if (substr($this->datastreamContent, 72, 8) !== '64617461') {
$this->addResult(FALSE, "{$this->datastream} datastream is missing the 'data' subchunk.");
return;
}
else {
$this->addResult(TRUE, "{$this->datastream} datastream contains 'data' subchunk.");
$wav_numsamples = strlen(substr($this->datastreamContent, 88)) / self::getNumChannels() / self::getBytesPerSample() / 2;
$assertion = self::getDataSubChunkSize() === $wav_numsamples * self::getNumChannels() * self::getBytesPerSample();
$pass = "{$this->datastream} datastream 'data' chunk is the correct size.";
$fail = "{$this->datastream} datastream 'data' chunk is sized incorrectly.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
}
/**
* Gets the number of channels reported by the WAV header.
*
* @return int
* The number of channels reported by the datastream header.
*/
protected function getNumChannels() {
return islandora_hex2int(substr($this->datastreamContent, 44, 4));
}
/**
* Gets the reported number of byte rates per sample.
*
* @return int
* The number of bytes per sample reported by the datastream header.
*/
protected function getBytesPerSample() {
return islandora_hex2int(substr($this->datastreamContent, 68, 4)) / 8;
}
/**
* Gets the size of the 'data' subchunk.
*
* @return int
* The size of the 'data' subchunk.
*/
protected function getDataSubChunkSize() {
return islandora_hex2int(substr($this->datastreamContent, 80, 8));
}
}
/**
* Asserts the validity of any .mp3 datastream.
*
* Our default setup tries to create an MP3 using VBR, but we do some extra
* checks in case someone turns that off. If the header contains the characters
* 'Xing', it is flagged as VBR, and we can do an in-depth check on each of the
* VBR settings. Otherwise, we look for the basic MP3 signature 'fffa' or 'fffb'
* at the start of the binary.
*/
class MP3DatastreamValidator extends DatastreamValidator {
/**
* Asserts the validity of the MP3.
*
* The MP3 file format is a bit of a mess; the entire makeup of the file
* depends on whether it uses variable bit rate or static bit rate. So, I'm
* breaking my own rules here and using a single assert function so that I
* can handle the weird logic.
*/
protected function assertValidMP3() {
$this->datastreamContent = bin2hex($this->datastreamContent);
// If it's not a VBR MP3, we don't have to check much, so let's get that
// out of the way first before we go doing a bunch of potentially pointless
// math. Check to see if the VBR flag (58696e67) isn't there.
if (strpos($this->datastreamContent, '58696e67') == FALSE && substr($this->datastreamContent, 0, 4) == 'fffa') {
$this->addResult(TRUE, "{$this->datastream} datastream is encoded as a valid MPEG-1 Layer 3 file with CRC protection");
return;
}
if (strpos($this->datastreamContent, '58696e67') == FALSE && substr($this->datastreamContent, 0, 4) == 'fffb') {
$this->addResult(TRUE, "{$this->datastream} datastream is encoded as a valid unprotected MPEG-1 Layer 3 file");
return;
}
// And what if the flag IS set?
if (strpos($this->datastreamContent, '58696e67')) {
// Check the field flags. VBR-formatted MP3 files contain a 32-bit
// integer (stored as $mp3_flag_value) that is a combination of four
// bits, each one indicating the on-off status of a VBR setting, via
// logical OR. Rather than disassembling this value into individual
// bits, we use the algorithm "if (binary_total+bit_value*2)/bit_value*2
// is greater than or equal to bit_value, that bit is turned on" to find
// the status of each bit, so we know whether to offset the rest.
$mp3_field_offset = array(0, 0, 0);
$mp3_vbrheader = substr($this->datastreamContent, strpos($this->datastreamContent, '58696e67'), 240);
$mp3_flag_value = hexdec(substr($mp3_vbrheader, 8, 8));
// We can't use the first flag, but we still need to offset the rest.
if (($mp3_flag_value + 1) % 2 == 0) {
$mp3_field_offset[0] += 8;
$mp3_field_offset[1] += 8;
$mp3_field_offset[2] += 8;
}
// The second flag leads us to filesize data, which we can verify.
if (($mp3_flag_value + 4) % 4 > 1) {
$mp3_field_bytes = hexdec(substr($mp3_vbrheader, $mp3_field_offset[0] + 16, 8));
$mp3_size = strlen($this->datastreamContent) / 2;
$assertion = $mp3_size == $mp3_field_bytes;
$pass = "{$this->datastream} datastream reported filesize of {$mp3_size} bytes matches size field value of {$mp3_field_bytes}";
$fail = "{$this->datastream} datastream reported filesize of {$mp3_size} bytes does not match size field value of {$mp3_field_bytes}";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
$mp3_field_offset[1] += 8;
$mp3_field_offset[2] += 8;
}
// We can't use the third flag for anything, but we still have to offset.
if (($mp3_flag_value + 8) % 8 > 3) {
$mp3_field_offset[2] += 200;
}
// The fourth flag leads us to VBR quality data, which we can validate.
if ($mp3_flag_value > 7) {
$mp3_field_quality = hexdec(substr($mp3_vbrheader, $mp3_field_offset[2] + 16, 8));
$assertion = $mp3_field_quality <= 100 && $mp3_field_quality >= 0;
$pass = "{$this->datastream} datastream reports valid VBR quality of {$mp3_field_quality} (expected: between 0-100)";
$fail = "{$this->datastream} datastream reports invalid VBR quality of {$mp3_field_quality} (expected: between 0-100)";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
}
// If none of that works out, fail.
else {
$this->addResult(FALSE, "{$this->datastream} datastream is corrupt and does not identify as a valid MP3.");
}
}
}
/**
* Attempts to validate an .mp4 datastream.
*
* MP4 files are a subset of the ISO file format specification, and as such need
* to contain a 64-bit declaration of type within the first eight eight bytes of
* the file. This declaration is comprised of the characters 'ftyp', followed by
* a four-character filetype code. Here, we look for 'ftyp', and then pass the
* filetype code to the test message.
*/
class MP4DatastreamValidator extends DatastreamValidator {
/**
* Asserts that the datastream is ISO-formatted video.
*/
protected function assertISOVideo() {
$mp4_ftyp = substr(strpos($this->datastreamContent, 'ftyp'), 4, 4);
$assertion = strpos($this->datastreamContent, 'ftyp') !== 0;
$pass = "{$this->datastream} datastream asserts that it is a valid ISO-formatted video file using ftyp {$mp4_ftyp}";
$fail = "{$this->datastream} datastream is not a valid ISO-formatted video";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
}
/**
* Attempts to validate an .ogg/ogv datastream using Vorbis and Theora encoding.
*
* OGG files are made up of several 'pages' of OGG data, each prefaced with an
* OGG marker - the letters 'OggS'. The file header also contains information on
* what encoders were used to create the file. Here, we're looking for at least
* one OGG page, and confirming that the file asserts the Theora and Vorbis
* codecs were used to create the file.
*/
class OGGDatastreamValidator extends DatastreamValidator {
/**
* Asserts that the datastream contains ogg pages.
*/
protected function assertOGGPages() {
$ogg_pages = substr_count($this->datastreamContent, 'OggS');
$assertion = $ogg_pages !== 0;
$pass = "{$this->datastream} datastream asserts that it contains {$ogg_pages} Ogg pages (even a very small file should contain several).";
$fail = "{$this->datastream} datastream contains no Ogg pages.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
/**
* Asserts that the datastream contains Theora-encoded video.
*/
protected function assertTheoraVideo() {
$assertion = substr_count($this->datastreamContent, 'theora') !== 0;
$pass = "{$this->datastream} datastream asserts that it contains Theora-encoded video data.";
$fail = "{$this->datastream} datastream contains no marker indicating the presence of Theora-encoded video data.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
/**
* Asserts that the datastream contains Vorbis-encoded audio.
*/
protected function assertVorbisAudio() {
$assertion = substr_count($this->datastreamContent, 'vorbis') !== 0;
$pass = "{$this->datastream} datastream asserts that it contains Vorbis-encoded audio data";
$fail = "{$this->datastream} datastream contains no marker indicating the presence of Vorbis-encoded audio data.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
}
/**
* Attempts to validate an .mkv datastream.
*
* There's not much we can do to check an MKV file, since the format is really,
* really loose. We do know a couple of things though - first, since MKV is an
* EBML format, the first four characters will always be the same. Since they're
* non-standard characters, we're looking at their hex values instead. And
* second, we know that the file will contain the declaration 'matroska' soon
* after.
*/
class MKVDatastreamValidator extends DatastreamValidator {
/**
* Asserts that the datastream is an EBML-format file.
*/
protected function assertEBMLFormat() {
$assertion = substr(bin2hex($this->datastreamContent), 0, 8) == '1a45dfa3';
$pass = "{$this->datastream} datastream asserts that it is an EBML-formatted file";
$fail = "{$this->datastream} datastream is not an EBML-formatted file.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
/**
* Asserts that the datastream contains a matroska marker.
*/
protected function assertMatroskaMarker() {
$assertion = substr_count($this->datastreamContent, 'matroska') == 1;
$pass = "{$this->datastream} datastream asserts that its EBML DocType is Matroska";
$fail = "{$this->datastream} datastream does not contain a Matroska EBML DocType marker.";
$message = $assertion ? $pass : $fail;
$this->addResult($assertion, $message);
}
}

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tests/islandora_web_test_case.inc
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<?php
/**
* @file
* Defines the class IslandoraWebTestCase, which allows tests to access Fedora.
*/
class IslandoraWebTestCase extends DrupalWebTestCase {
/**
* An array of users that may be created over the course of a test.
*
* @var array
*/
protected $users = array();
/**
* By default, deleteUserCreatedObjects() runs on each tearDown() step.
*/
protected $deleteObjectsOnTeardown = TRUE;
/**
* Sets up the Drupal filter to access this test Drupal instances database.
*
* @see DrupalWebTestCase::setUp()
*/
public function setUp() {
$args = func_get_args();
$args = (isset($args[0]) && is_array($args[0])) ? $args[0] : $args;
// Always enable islandora.
$args[] = 'islandora';
parent::setUp($args);
// Its possible test are running before class autoloading.
module_load_include('inc', 'islandora', 'includes/tuque');
module_load_include('inc', 'islandora', 'includes/tuque_wrapper');
$this->configuration = $this->getTestConfiguration();
if ($this->configuration['use_drupal_filter']) {
$this->backUpDrupalFilter();
$this->setUpDrupalFilter();
}
$this->admin = $this->createAdminUser();
}
/**
* Parses and returns the settings from the test configuration file.
*
* If no install specific test_config.ini file is found, it will use the
* assumed default configs found in default.test_config.ini.
*
* @return array
* The test configuration.
*
* @see parse_ini_file()
*/
protected function getTestConfiguration() {
$path = drupal_get_path('module', 'islandora');
if (file_exists("$path/tests/test_config.ini")) {
$this->pass('Using custom test configuration.');
return parse_ini_file("$path/tests/test_config.ini");
}
elseif (file_exists("$path/tests/default.test_config.ini")) {
$this->pass('Using default test configuration.');
return parse_ini_file("$path/tests/default.test_config.ini");
}
throw new Exception('Required default.test_config.ini/test_config.ini file not found');
}
/**
* Stores the content of the Drupal Filter for later restoration.
*/
protected function backUpDrupalFilter() {
if (file_exists($this->configuration['drupal_filter_file'])) {
$this->originalDrupalFilterContent = file_get_contents($this->configuration['drupal_filter_file']);
}
else {
throw new Exception('Failed to find the required Drupal Filter configuration file.');
}
}
/**
* Sets up a drupal filter that can read for the tests users table.
*/
protected function setUpDrupalFilter() {
$connection_info = Database::getConnectionInfo('default');
$drupal_filter_dom = new DomDocument();
$drupal_filter_dom->loadXML($this->originalDrupalFilterContent);
$server = $connection_info['default']['host'];
$dbname = $connection_info['default']['database'];
$user = $connection_info['default']['username'];
$password = $connection_info['default']['password'];
$port = $connection_info['default']['port'] ? $connection_info['default']['port'] : '3306';
$prefix = $connection_info['default']['prefix']['default'];
$filter_drupal_connection_node = $drupal_filter_dom->getElementsByTagName('FilterDrupal_Connection')->item(0);
$first_connection_node = $drupal_filter_dom->getElementsByTagName('connection')->item(0);
$connection_node = $filter_drupal_connection_node->insertBefore($drupal_filter_dom->createElement('connection'), $first_connection_node);
$connection_node->setAttributeNode(new DOMAttr('server', $server));
$connection_node->setAttributeNode(new DOMAttr('dbname', $dbname));
$connection_node->setAttributeNode(new DOMAttr('user', $user));
$connection_node->setAttributeNode(new DOMAttr('password', $password));
$connection_node->setAttributeNode(new DOMAttr('port', $port));
$sql_node = $connection_node->appendChild(new DOMElement('sql'));
$sql_node->appendChild($drupal_filter_dom->createTextNode("SELECT DISTINCT u.uid AS userid, u.name AS Name, u.pass AS Pass, r.name AS Role FROM ({$prefix}users u LEFT JOIN {$prefix}users_roles ON u.uid={$prefix}users_roles.uid) LEFT JOIN {$prefix}role r ON r.rid={$prefix}users_roles.rid WHERE u.name=? AND u.pass=?;"));
file_put_contents($this->configuration['drupal_filter_file'], $drupal_filter_dom->saveXML());
}
/**
* Creates the a full fedora admin user with a repository connection.
*/
protected function createAdminUser() {
$roles = user_roles();
$index = array_search('administrator', $roles);
$user = $this->drupalCreateUser();
$user->roles[$index] = 'administrator';
$user->name = $this->configuration['admin_user'];
$user->pass = $this->configuration['admin_pass'];
$user = user_save($user);
$url = variable_get('islandora_base_url', $this->configuration['fedora_url']);
$connection = islandora_get_tuque_connection($user, $url);
$user->repository = $connection->repository;
return $user;
}
/**
* Logs in the given user, handles the special case where the user is admin.
*
* @see DrupalWebTestCase::drupalLogin()
*/
protected function drupalLogin(stdClass $account) {
if ($account->uid == $this->admin->uid) {
// Create password for Drupal.
$edit = array('pass' => user_password());
$account = user_save($account, $edit);
// Raw password is used to login.
$account->pass_raw = $edit['pass'];
// We must login before changing the password for fedora.
parent::drupalLogin($account);
$account->name = $this->configuration['admin_user'];
$account->pass = $this->configuration['admin_pass'];
// Save the fedora admin credentials for later GET/POST requests.
$account = user_save($account);
}
else {
parent::drupalLogin($account);
$this->users[] = $account->name;
}
}
/**
* Stores the content of the Drupal Filter for later restoration.
*/
protected function restoreDrupalFilter() {
$file = $this->configuration['drupal_filter_file'];
if (isset($this->originalDrupalFilterContent)) {
file_put_contents($file, $this->originalDrupalFilterContent);
}
elseif (file_exists($file)) {
// Remove if there was never an original.
drupal_unlink($file);
}
}
/**
* Restores the original Drupal filter, frees any allocated resources.
*
* To safeguard against leaving test objects in the repository, tearDown()
* calls deleteUserCreatedObjects() every time by default. This feature can be
* toggled by setting $this->deleteObjectsOnTeardown to TRUE or FALSE.
*
* @see DrupalWebTestCase::tearDown()
*/
public function tearDown() {
if ($this->deleteObjectsOnTeardown) {
foreach ($this->users as $user) {
$this->deleteUserCreatedObjects($user);
}
}
if ($this->configuration['use_drupal_filter']) {
$this->restoreDrupalFilter();
}
unset($this->admin);
unset($this->configuration);
parent::tearDown();
}
/**
* Asserts that the given datastreams exist correctly on the object.
*
* @param AbstractObject $object
* The PID of the object
* @param array $datastreams
* An array of strings containing datastream names
*
* @return bool
* TRUE on success, FALSE on fail.
*/
public function assertDatastreams($object, array $datastreams) {
if (!is_object($object)) {
$this->fail("Failed. Object passed in is invalid.", 'Islandora');
}
else {
$missing_datastreams = array_diff_key(array_flip($datastreams), $this->admin->repository->api->a->listDatastreams($object->id));
if (!empty($missing_datastreams)) {
$this->fail("Failed to find datastream(s) " . implode(', ', array_flip($missing_datastreams)) . " in object {$object->id}.");
return FALSE;
}
$this->pass("Found required datastream(s) in object {$object->id}");
return TRUE;
}
}
/**
* Attempts to validate an array of datastreams, generally via binary checks.
*
* Datastream validation classes exist in, and can be added to, the file
* 'datastream_validators.inc', which is found in this folder. Datastream
* validator classes use the naming convention 'PrefixDatastreamValidator',
* and that 'Prefix' is what this function uses to determine what class to
* instantiate.
*
* $param IslandoraFedoraObject $object
* The object to load datastreams from.
* $param array $datastreams
* An array of arrays that pair DSIDs, DatastreamValidator class prefixes,
* and optional params. You can check some of the existing implementations
* for examples.
*/
public function validateDatastreams($object, array $datastreams) {
if (!is_object($object)) {
$this->fail("Datastream validation failed; Object passed in is invalid.", 'Islandora');
return;
}
module_load_include('inc', 'islandora', 'tests/datastream_validators');
foreach ($datastreams as $datastream) {
// Let's give them conventional names.
$dsid = $datastream[0];
$prefix = $datastream[1];
$params = array();
if (isset($datastream[2])) {
$params = $datastream[2];
}
// Legacy tests were created before the CamelCase conventions of the class
// system now in place. So, we need to automagically seek out prefixes
// that start with a lower-case letter and convert them to the proper
// format (rather than fixing every single legacy test).
if (ctype_lower(substr($prefix, 0, 1))) {
// Handle the case where the prefix is "image".
if ($prefix === 'image') {
$prefix = 'Image';
}
// Handle the case where the prefix is "text".
elseif ($prefix === 'text') {
$prefix = 'Text';
}
// All other cases involve just converting everything to caps.
else {
$prefix = strtoupper($prefix);
}
}
// Instantiate the appropriate class, and grab the results.
$class_name = "{$prefix}DatastreamValidator";
if (class_exists($class_name)) {
$validator = new $class_name($object, $dsid, $params);
foreach ($validator->getResults() as $result) {
$this->assert($result->getType(), $result->getMessage(), 'Islandora', $result->getCaller());
}
}
else {
$this->fail("No DatastreamValidator class was found with the name '$class_name'; are you sure the prefix given to IslandoraWebTestCase->validateDatastreams() was entered correctly, or that such a validator exists?", 'Islandora');
}
}
}
/**
* Gets a tuque object from a path.
*
* @param string $path
* A full or partial path to an islandora object.
*
* @return AbstractObject
* The pid of the object or FALSE if a PID is not found.
*/
public function getObjectFromPath($path) {
$path_parts = explode('/', $path);
$array_length = count($path_parts);
for ($i = 0; $i < $array_length; $i++) {
if ($path_parts[$i] == 'islandora' && isset($path_parts[$i + 1]) && $path_parts[$i + 1] == 'object') {
if (isset($path_parts[$i + 2])) {
return islandora_object_load(urldecode($path_parts[$i + 2]));
}
}
}
$this->fail("Failed to parse path: $path.");
return FALSE;
}
/**
* Deletes an object using the PID. This does the deletion using the UI.
*
* @param string $pid
* The PID of the collection to be deleted
* @param string $button
* The label of the first 'Delete' button
* @param bool $safety
* If TRUE, this will only delete objects owned by users in $this->users.
*/
public function deleteObject($pid, $button = NULL, $safety = TRUE) {
$object = islandora_object_load($pid);
if (!$safety || in_array($object->owner, $this->users)) {
$path = "islandora/object/$pid/manage/properties";
if (isset($button)) {
$this->drupalPost($path, array(), $button);
}
else {
$object = islandora_object_load($pid);
$this->drupalPost($path, array(), "Permanently remove '{$object->label}' from repository");
}
$this->drupalPost($this->url, array(), t('Delete'));
$this->drupalGet("islandora/object/$pid");
$this->assertResponse(404, "Object $pid successfully deleted.");
}
else {
$this->fail("Cannot delete object {$pid}; it is owned by non-test user {$object->owner}, and this function was called with the safety on.");
return FALSE;
}
}
/**
* Constructs and ingests a Fedora object and datastream(s) via tuque.
*
* All keys inside the parameter arrays for this function are optional. it
* can be run simply by calling $this->ingestConstructedObject();.
*
* @param array $properties
* An array containing object information using these keys:
* 'label' - The object label; randomized if not set.
* 'pid' - 'namespace:pid', or just 'namespace' to generate the suffix.
* 'models' - An array that can contain multiple content model PIDs, or a
* string containing a single content model PID.
* 'owner' - The object's owner. Defaults to the currently logged-in user,
* if available. It is recommended to set this to a value that can be found
* in $this->users; otherwise, this object will have to be manually deleted.
* 'parent' - The PID of the parent collection.
* @param array $datastreams
* An array containing zero or more datastream arrays that use the keys:
* 'dsid' - the datastream ID; randomized if not set.
* 'path' - The path to the file to use; defaults to fixtures/test.jpg.
* 'control_group' - The single-letter control group identifier.
* 'mimetype' - The datastream's mimetype.
*
* @return bool|array
* FALSE if the object ingest failed, or the object array if successful.
*/
public function ingestConstructedObject(array $properties = array(), array $datastreams = array()) {
$tuque = islandora_get_tuque_connection($this->admin);
$repository = $tuque->repository;
if (!isset($properties['pid'])) {
$properties['pid'] = "islandora";
}
$object = $repository->constructObject($properties['pid']);
// Set the object properties before ingesting it.
if (isset($properties['label'])) {
$object->label = $properties['label'];
}
else {
$properties['label'] = $this->randomName(16);
$object->label = $properties['label'];
}
if (isset($properties['owner'])) {
$object->owner = $properties['owner'];
}
elseif ($this->loggedInUser !== FALSE) {
$object->owner = $this->loggedInUser->name;
}
if (isset($properties['models'])) {
try {
$object->models = (array) $properties['models'];
}
catch (Exception $e) {
$this->fail("Encountered an exception when trying to add content models to {$object->id}: $e");
return FALSE;
}
}
$repository->ingestObject($object);
if (!$object) {
$this->fail(t("Failed to ingest object."), 'Islandora');
return FALSE;
}
else {
$this->pass(t("Ingested object %object", array('%object' => $object->id)), 'Islandora');
}
// Chuck in some datastreams.
if (!empty($datastreams)) {
foreach ($datastreams as $datastream) {
if (!isset($datastream['dsid'])) {
$datastream['dsid'] = $this->randomName(8);
}
if (!isset($datastream['path'])) {
$datastream['path'] = drupal_get_path('module', 'islandora') . '/tests/fixtures/test.jpg';
}
if (!isset($datastream['control_group'])) {
$new_datastream = $object->constructDatastream($datastream['dsid']);
}
else {
$new_datastream = $object->constructDatastream($datastream['dsid'], $datastream['control_group']);
}
$new_datastream->label = $datastream['dsid'];
if (isset($datastream['mimetype'])) {
$new_datastream->mimetype = $datastream['mimetype'];
}
$new_datastream->setContentFromFile($datastream['path']);
$object->ingestDatastream($new_datastream);
}
}
// Add a parent relationship, if necessary.
if (isset($properties['parent'])) {
$object->relationships->add(FEDORA_RELS_EXT_URI, 'isMemberOfCollection', $properties['parent']);
}
return $object;
}
/**
* Deletes all objects created by the given user.
*
* To safeguard against leaving test objects in the repository, this is called
* each time DrupalTestCase::run() calls tearDown(). This feature can be
* toggled by setting $this->deleteObjectsOnTeardown to TRUE or FALSE.
*
* @param object $username
* The user whose objects we'd like to remove.
*
* @return bool
* TRUE on success, FALSE on failure.
*/
public function deleteUserCreatedObjects($username) {
if ($username === $this->configuration['admin_user']) {
$this->fail("This function will under no circumstance attempt deletion of all objects owned by the configured Fedora admin user ({$this->configuration['admin_user']}), as this could irreparably damage the repository.", 'Islandora');
return FALSE;
}
$query = <<<QUERY
SELECT ?object FROM <#ri> WHERE
{
?object <fedora-model:ownerId> "$username"
}
QUERY;
$objects = $this->admin->repository->ri->sparqlQuery($query);
foreach ($objects as $object) {
$loaded_object = islandora_object_load($object['object']['value']);
islandora_delete_object($loaded_object);
if ($this->assertFalse(islandora_object_load($object['object']['value']), "Object {$object['object']['value']} successfully removed from repository.", 'Islandora')) {
return FALSE;
}
return TRUE;
}
}
/**
* These are a few quick helper functions to fill in a gap in the standard
* DrupalWebTestCase where no function exists to test for the simple existence
* or non-existence of an error.
*/
/**
* Asserts that an error is found in $this->content.
*
* @param string $message
* The message to pass on to the results.
* @param string $group
* The group to place the result in.
*
* @return bool
* TRUE on success, FALSE on failure.
*/
public function assertError($message = '', $group = 'Other') {
if (!$message) {
$message = "Error found on current page when error was expected.";
}
return $this->assertRaw("<div class=\"messages error\">", $message, $group);
}
/**
* Asserts that no error is found in $this->content.
*
* @param string $message
* The message to pass on to the results.
* @param string $group
* The group to place the result in.
*
* @return bool
* TRUE on success, FALSE on failure.
*/
public function assertNoError($message = '', $group = 'Other') {
if (!$message) {
$message = "No error found on current page when no error was expected.";
}
return $this->assertNoRaw("<div class=\"messages error\">", $message, $group);
}
/**
* Asserts that a warning is found in $this->content.
*
* @param string $message
* The message to pass on to the results.
* @param string $group
* The group to place the result in.
*
* @return bool
* TRUE on success, FALSE on failure.
*/
public function assertWarning($message = '', $group = 'Other') {
if (!$message) {
$message = "Warning found on current page when warning was expected.";
}
return $this->assertRaw("<div class=\"messages warning\">", $message, $group);
}
/**
* Asserts that no warning is found in $this->content.
*
* @param string $message
* The message to pass on to the results.
* @param string $group
* The group to place the result in.
*
* @return bool
* TRUE on success, FALSE on failure.
*/
public function assertNoWarning($message = '', $group = 'Other') {
if (!$message) {
$message = "No warning found on current page when no warning was expected.";
}
return $this->assertNoRaw("<div class=\"messages error\">", $message, $group);
}
/**
* Makes a drupalPost() request, using the form submit button's ID.
*
* Because drupalPost() is silly and doesn't let us choose which button we'd
* like to select if multiple buttons have the same value, this function
* allows us to select whatever button we'd like based on the ID instead.
*
* This is done via the absolutely hilarious method of fudging the actual
* button labels that don't have the ID we want, so that the only one left
* with the correct label is the one with the right ID.
*
* @see DrupalWebTestCase::drupalPost()
*
* @param string $path
* Location of the post form.
* @param array $edit
* Field data in an associative array.
* @param string $submit
* Value of the submit button whose click is to be emulated.
* @param string $id
* ID of the submit button whose click is to be emulated.
* @param array $options
* Options to be forwarded to url().
* @param array $headers
* An array containing additional HTTP request headers, each formatted as
* "name: value".
* @param null $form_html_id
* (optional) HTML ID of the form to be submitted.
* @param null $extra_post
* (optional) A string of additional data to append to the POST submission.
*
* @return bool|string
* The content from the POST request's curlExec, or FALSE on fail.
*/
public function drupalPostByID($path, $edit, $submit, $id, array $options = array(), array $headers = array(), $form_html_id = NULL, $extra_post = NULL) {
$buttons = $this->xpath("//input[@type=\"submit\" and @value=\"{$submit}\"]");
if (empty($buttons)) {
$this->fail("No buttons found on the page with value '$submit'");
return FALSE;
}
$i = 0;
foreach ($buttons as $button) {
if ($button['id'] !== $id) {
$button['value'] .= "_$i";
$i++;
}
}
return $this->drupalPost($path, $edit, $submit, $options, $headers, $form_html_id, $extra_post);
}
}
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