mirror of
https://we.phorge.it/source/arcanist.git
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3b6b523c2b
Test Plan: None. Reviewers: #blessed_reviewers, epriestley Reviewed By: #blessed_reviewers, epriestley Subscribers: epriestley Differential Revision: https://secure.phabricator.com/D17376
465 lines
15 KiB
PHP
465 lines
15 KiB
PHP
<?php
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/**
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* Uses xUnit (http://xunit.codeplex.com/) to test C# code.
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*
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* Assumes that when modifying a file with a path like `SomeAssembly/MyFile.cs`,
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* that the test assembly that verifies the functionality of `SomeAssembly` is
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* located at `SomeAssembly.Tests`.
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*
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* @concrete-extensible
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*/
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class XUnitTestEngine extends ArcanistUnitTestEngine {
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protected $runtimeEngine;
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protected $buildEngine;
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protected $testEngine;
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protected $projectRoot;
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protected $xunitHintPath;
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protected $discoveryRules;
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/**
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* This test engine supports running all tests.
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*/
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protected function supportsRunAllTests() {
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return true;
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}
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/**
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* Determines what executables and test paths to use. Between platforms this
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* also changes whether the test engine is run under .NET or Mono. It also
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* ensures that all of the required binaries are available for the tests to
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* run successfully.
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*
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* @return void
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*/
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protected function loadEnvironment() {
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$this->projectRoot = $this->getWorkingCopy()->getProjectRoot();
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// Determine build engine.
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if (Filesystem::binaryExists('msbuild')) {
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$this->buildEngine = 'msbuild';
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} else if (Filesystem::binaryExists('xbuild')) {
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$this->buildEngine = 'xbuild';
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} else {
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throw new Exception(
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pht(
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'Unable to find %s or %s in %s!',
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'msbuild',
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'xbuild',
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'PATH'));
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}
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// Determine runtime engine (.NET or Mono).
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if (phutil_is_windows()) {
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$this->runtimeEngine = '';
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} else if (Filesystem::binaryExists('mono')) {
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$this->runtimeEngine = Filesystem::resolveBinary('mono');
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} else {
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throw new Exception(
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pht('Unable to find Mono and you are not on Windows!'));
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}
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// Read the discovery rules.
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$this->discoveryRules =
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$this->getConfigurationManager()->getConfigFromAnySource(
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'unit.csharp.discovery');
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if ($this->discoveryRules === null) {
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throw new Exception(
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pht(
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'You must configure discovery rules to map C# files '.
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'back to test projects (`%s` in %s).',
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'unit.csharp.discovery',
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'.arcconfig'));
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}
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// Determine xUnit test runner path.
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if ($this->xunitHintPath === null) {
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$this->xunitHintPath =
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$this->getConfigurationManager()->getConfigFromAnySource(
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'unit.csharp.xunit.binary');
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}
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$xunit = $this->projectRoot.DIRECTORY_SEPARATOR.$this->xunitHintPath;
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if (file_exists($xunit) && $this->xunitHintPath !== null) {
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$this->testEngine = Filesystem::resolvePath($xunit);
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} else if (Filesystem::binaryExists('xunit.console.clr4.exe')) {
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$this->testEngine = 'xunit.console.clr4.exe';
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} else {
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throw new Exception(
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pht(
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"Unable to locate xUnit console runner. Configure ".
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"it with the `%s' option in %s.",
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'unit.csharp.xunit.binary',
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'.arcconfig'));
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}
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}
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/**
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* Main entry point for the test engine. Determines what assemblies to build
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* and test based on the files that have changed.
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*
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* @return array Array of test results.
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*/
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public function run() {
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$this->loadEnvironment();
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if ($this->getRunAllTests()) {
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$paths = id(new FileFinder($this->projectRoot))->find();
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} else {
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$paths = $this->getPaths();
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}
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return $this->runAllTests($this->mapPathsToResults($paths));
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}
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/**
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* Applies the discovery rules to the set of paths specified.
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*
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* @param array Array of paths.
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* @return array Array of paths to test projects and assemblies.
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*/
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public function mapPathsToResults(array $paths) {
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$results = array();
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foreach ($this->discoveryRules as $regex => $targets) {
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$regex = str_replace('/', '\\/', $regex);
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foreach ($paths as $path) {
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if (preg_match('/'.$regex.'/', $path) === 1) {
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foreach ($targets as $target) {
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// Index 0 is the test project (.csproj file)
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// Index 1 is the output assembly (.dll file)
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$project = preg_replace('/'.$regex.'/', $target[0], $path);
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$project = $this->projectRoot.DIRECTORY_SEPARATOR.$project;
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$assembly = preg_replace('/'.$regex.'/', $target[1], $path);
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$assembly = $this->projectRoot.DIRECTORY_SEPARATOR.$assembly;
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if (file_exists($project)) {
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$project = Filesystem::resolvePath($project);
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$assembly = Filesystem::resolvePath($assembly);
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// Check to ensure uniqueness.
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$exists = false;
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foreach ($results as $existing) {
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if ($existing['assembly'] === $assembly) {
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$exists = true;
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break;
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}
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}
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if (!$exists) {
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$results[] = array(
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'project' => $project,
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'assembly' => $assembly,
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);
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}
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}
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}
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}
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}
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}
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return $results;
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}
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/**
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* Builds and runs the specified test assemblies.
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*
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* @param array Array of paths to test project files.
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* @return array Array of test results.
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*/
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public function runAllTests(array $test_projects) {
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if (empty($test_projects)) {
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return array();
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}
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$results = array();
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$results[] = $this->generateProjects();
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if ($this->resultsContainFailures($results)) {
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return array_mergev($results);
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}
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$results[] = $this->buildProjects($test_projects);
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if ($this->resultsContainFailures($results)) {
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return array_mergev($results);
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}
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$results[] = $this->testAssemblies($test_projects);
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return array_mergev($results);
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}
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/**
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* Determine whether or not a current set of results contains any failures.
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* This is needed since we build the assemblies as part of the unit tests, but
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* we can't run any of the unit tests if the build fails.
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*
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* @param array Array of results to check.
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* @return bool If there are any failures in the results.
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*/
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private function resultsContainFailures(array $results) {
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$results = array_mergev($results);
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foreach ($results as $result) {
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if ($result->getResult() != ArcanistUnitTestResult::RESULT_PASS) {
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return true;
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}
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}
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return false;
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}
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/**
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* If the `Build` directory exists, we assume that this is a multi-platform
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* project that requires generation of C# project files. Because we want to
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* test that the generation and subsequent build is whole, we need to
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* regenerate any projects in case the developer has added files through an
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* IDE and then forgotten to add them to the respective `.definitions` file.
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* By regenerating the projects we ensure that any missing definition entries
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* will cause the build to fail.
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*
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* @return array Array of test results.
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*/
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private function generateProjects() {
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// No "Build" directory; so skip generation of projects.
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if (!is_dir(Filesystem::resolvePath($this->projectRoot.'/Build'))) {
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return array();
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}
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// No "Protobuild.exe" file; so skip generation of projects.
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if (!is_file(Filesystem::resolvePath(
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$this->projectRoot.'/Protobuild.exe'))) {
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return array();
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}
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// Work out what platform the user is building for already.
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$platform = phutil_is_windows() ? 'Windows' : 'Linux';
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$files = Filesystem::listDirectory($this->projectRoot);
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foreach ($files as $file) {
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if (strtolower(substr($file, -4)) == '.sln') {
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$parts = explode('.', $file);
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$platform = $parts[count($parts) - 2];
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break;
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}
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}
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$regenerate_start = microtime(true);
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$regenerate_future = new ExecFuture(
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'%C Protobuild.exe --resync %s',
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$this->runtimeEngine,
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$platform);
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$regenerate_future->setCWD(Filesystem::resolvePath(
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$this->projectRoot));
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$results = array();
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$result = new ArcanistUnitTestResult();
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$result->setName(pht('(regenerate projects for %s)', $platform));
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try {
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$regenerate_future->resolvex();
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$result->setResult(ArcanistUnitTestResult::RESULT_PASS);
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} catch (CommandException $exc) {
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if ($exc->getError() > 1) {
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throw $exc;
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}
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$result->setResult(ArcanistUnitTestResult::RESULT_FAIL);
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$result->setUserData($exc->getStdout());
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}
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$result->setDuration(microtime(true) - $regenerate_start);
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$results[] = $result;
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return $results;
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}
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/**
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* Build the projects relevant for the specified test assemblies and return
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* the results of the builds as test results. This build also passes the
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* "SkipTestsOnBuild" parameter when building the projects, so that MSBuild
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* conditionals can be used to prevent any tests running as part of the
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* build itself (since the unit tester is about to run each of the tests
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* individually).
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*
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* @param array Array of test assemblies.
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* @return array Array of test results.
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*/
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private function buildProjects(array $test_assemblies) {
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$build_futures = array();
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$build_failed = false;
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$build_start = microtime(true);
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$results = array();
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foreach ($test_assemblies as $test_assembly) {
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$build_future = new ExecFuture(
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'%C %s',
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$this->buildEngine,
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'/p:SkipTestsOnBuild=True');
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$build_future->setCWD(Filesystem::resolvePath(
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dirname($test_assembly['project'])));
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$build_futures[$test_assembly['project']] = $build_future;
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}
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$iterator = id(new FutureIterator($build_futures))->limit(1);
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foreach ($iterator as $test_assembly => $future) {
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$result = new ArcanistUnitTestResult();
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$result->setName('(build) '.$test_assembly);
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try {
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$future->resolvex();
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$result->setResult(ArcanistUnitTestResult::RESULT_PASS);
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} catch (CommandException $exc) {
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if ($exc->getError() > 1) {
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throw $exc;
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}
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$result->setResult(ArcanistUnitTestResult::RESULT_FAIL);
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$result->setUserData($exc->getStdout());
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$build_failed = true;
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}
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$result->setDuration(microtime(true) - $build_start);
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$results[] = $result;
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}
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return $results;
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}
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/**
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* Build the future for running a unit test. This can be overridden to enable
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* support for code coverage via another tool.
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*
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* @param string Name of the test assembly.
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* @return array The future, output filename and coverage filename
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* stored in an array.
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*/
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protected function buildTestFuture($test_assembly) {
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// FIXME: Can't use TempFile here as xUnit doesn't like
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// UNIX-style full paths. It sees the leading / as the
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// start of an option flag, even when quoted.
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$xunit_temp = Filesystem::readRandomCharacters(10).'.results.xml';
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if (file_exists($xunit_temp)) {
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unlink($xunit_temp);
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}
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$future = new ExecFuture(
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'%C %s /xml %s',
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trim($this->runtimeEngine.' '.$this->testEngine),
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$test_assembly,
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$xunit_temp);
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$folder = Filesystem::resolvePath($this->projectRoot);
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$future->setCWD($folder);
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$combined = $folder.'/'.$xunit_temp;
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if (phutil_is_windows()) {
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$combined = $folder.'\\'.$xunit_temp;
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}
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return array($future, $combined, null);
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}
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/**
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* Run the xUnit test runner on each of the assemblies and parse the
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* resulting XML.
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*
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* @param array Array of test assemblies.
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* @return array Array of test results.
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*/
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private function testAssemblies(array $test_assemblies) {
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$results = array();
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// Build the futures for running the tests.
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$futures = array();
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$outputs = array();
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$coverages = array();
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foreach ($test_assemblies as $test_assembly) {
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list($future_r, $xunit_temp, $coverage) =
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$this->buildTestFuture($test_assembly['assembly']);
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$futures[$test_assembly['assembly']] = $future_r;
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$outputs[$test_assembly['assembly']] = $xunit_temp;
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$coverages[$test_assembly['assembly']] = $coverage;
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}
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// Run all of the tests.
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$futures = id(new FutureIterator($futures))
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->limit(8);
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foreach ($futures as $test_assembly => $future) {
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list($err, $stdout, $stderr) = $future->resolve();
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if (file_exists($outputs[$test_assembly])) {
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$result = $this->parseTestResult(
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$outputs[$test_assembly],
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$coverages[$test_assembly]);
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$results[] = $result;
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unlink($outputs[$test_assembly]);
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} else {
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// FIXME: There's a bug in Mono which causes a segmentation fault
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// when xUnit.NET runs; this causes the XML file to not appear
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// (depending on when the segmentation fault occurs). See
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// https://bugzilla.xamarin.com/show_bug.cgi?id=16379
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// for more information.
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// Since it's not possible for the user to correct this error, we
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// ignore the fact the tests didn't run here.
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}
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}
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return array_mergev($results);
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}
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/**
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* Returns null for this implementation as xUnit does not support code
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* coverage directly. Override this method in another class to provide code
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* coverage information (also see @{class:CSharpToolsUnitEngine}).
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*
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* @param string The name of the coverage file if one was provided by
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* `buildTestFuture`.
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* @return array Code coverage results, or null.
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*/
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protected function parseCoverageResult($coverage) {
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return null;
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}
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/**
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* Parses the test results from xUnit.
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*
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* @param string The name of the xUnit results file.
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* @param string The name of the coverage file if one was provided by
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* `buildTestFuture`. This is passed through to
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* `parseCoverageResult`.
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* @return array Test results.
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*/
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private function parseTestResult($xunit_tmp, $coverage) {
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$xunit_dom = new DOMDocument();
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$xunit_dom->loadXML(Filesystem::readFile($xunit_tmp));
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$results = array();
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$tests = $xunit_dom->getElementsByTagName('test');
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foreach ($tests as $test) {
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$name = $test->getAttribute('name');
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$time = $test->getAttribute('time');
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$status = ArcanistUnitTestResult::RESULT_UNSOUND;
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switch ($test->getAttribute('result')) {
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case 'Pass':
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$status = ArcanistUnitTestResult::RESULT_PASS;
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break;
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case 'Fail':
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$status = ArcanistUnitTestResult::RESULT_FAIL;
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break;
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case 'Skip':
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$status = ArcanistUnitTestResult::RESULT_SKIP;
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break;
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}
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$userdata = '';
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$reason = $test->getElementsByTagName('reason');
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$failure = $test->getElementsByTagName('failure');
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if ($reason->length > 0 || $failure->length > 0) {
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$node = ($reason->length > 0) ? $reason : $failure;
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$message = $node->item(0)->getElementsByTagName('message');
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if ($message->length > 0) {
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$userdata = $message->item(0)->nodeValue;
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}
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$stacktrace = $node->item(0)->getElementsByTagName('stack-trace');
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if ($stacktrace->length > 0) {
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$userdata .= "\n".$stacktrace->item(0)->nodeValue;
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}
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}
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$result = new ArcanistUnitTestResult();
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$result->setName($name);
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$result->setResult($status);
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$result->setDuration($time);
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$result->setUserData($userdata);
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if ($coverage != null) {
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$result->setCoverage($this->parseCoverageResult($coverage));
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}
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$results[] = $result;
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}
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return $results;
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}
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}
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