Use phpunit as a library.

This enables more programmatic access to phpunit, especially when it
comes to code coverage.  By using the code coverage report object
directly we can remove the clover.xml generation and libxml dependency.

Author: Spencer Rinehart

build.php

@@ -21,17 +21,19 @@
     exit(1);
 }
 
-passthru('vendor/bin/phpunit --coverage-html coverage --coverage-clover clover.xml', $returnStatus);
-if ($returnStatus !== 0) {
+$phpunitConfiguration = PHPUnit_Util_Configuration::getInstance(__DIR__ . '/phpunit.xml');
+$phpunitArguments = array('coverageHtml' => __DIR__ . '/coverage', 'configuration' => $phpunitConfiguration);
+$testRunner = new PHPUnit_TextUI_TestRunner();
+$result = $testRunner->doRun($phpunitConfiguration->getTestSuiteConfiguration(), $phpunitArguments);
+if (!$result->wasSuccessful()) {
     exit(1);
 }
 
-$xml = new SimpleXMLElement(file_get_contents('clover.xml'));
-foreach ($xml->xpath('//file/metrics') as $metric) {
-    if ((int)$metric['elements'] !== (int)$metric['coveredelements']) {
-        file_put_contents('php://stderr', "Code coverage was NOT 100%\n");
-        exit(1);
-    }
+$coverageFactory = new PHP_CodeCoverage_Report_Factory();
+$coverageReport = $coverageFactory->create($result->getCodeCoverage());
+if ($coverageReport->getNumExecutedLines() !== $coverageReport->getNumExecutableLines()) {
+    file_put_contents('php://stderr', "Code coverage was NOT 100%\n");
+    exit(1);
 }
 
 echo "Code coverage was 100%\n";

composer.json

@@ -26,8 +26,7 @@
     },
     "require-dev": {
         "dominionenterprises/dws-coding-standard": "~1.1",
-        "phpunit/phpunit": "~4.0",
-        "lib-libxml": "*"
+        "phpunit/phpunit": "~4.0"
     },
     "autoload": {
         "psr-4": { "DominionEnterprises\\Mongo\\": "src/" }