diff --git a/.arcunit b/.arcunit
new file mode 100644
--- /dev/null
+++ b/.arcunit
@@ -0,0 +1,11 @@
+{
+    "engines": {
+        "bitcoin": {
+            "type": "bitcoin-test-engine",
+            "include": "(^src/.*\\.(h|cpp)$)",
+            "exclude": [
+                "(^src/(secp256k1|univalue|leveldb)/)"
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/arcanist/.phutil_module_cache b/arcanist/.phutil_module_cache
--- a/arcanist/.phutil_module_cache
+++ b/arcanist/.phutil_module_cache
@@ -1 +1 @@
-{"__symbol_cache_version__":11,"21dded7bc13561b46b1b39ecbfaa6a3f":{"have":{"class":{"ClangFormatLinter":79}},"need":{"function":{"pht":302,"id":1342},"class":{"ArcanistExternalLinter":105,"ArcanistLintMessage":1349,"Filesystem":1193,"ArcanistLinter":1456,"ArcanistLintSeverity":1534}},"xmap":{"ClangFormatLinter":["ArcanistExternalLinter"]}},"d60c8224f471e0ecddc2a6f3c6839cd1":{"have":{"class":{"AutoPEP8FormatLinter":75}},"need":{"function":{"pht":297,"id":1317},"class":{"ArcanistExternalLinter":104,"ArcanistLintMessage":1324,"Filesystem":1168,"ArcanistLinter":1431,"ArcanistLintSeverity":1509}},"xmap":{"AutoPEP8FormatLinter":["ArcanistExternalLinter"]}}}
\ No newline at end of file
+{"__symbol_cache_version__":11,"d60c8224f471e0ecddc2a6f3c6839cd1":{"have":{"class":{"AutoPEP8FormatLinter":75}},"need":{"function":{"pht":297,"id":1317},"class":{"ArcanistExternalLinter":104,"ArcanistLintMessage":1324,"Filesystem":1168,"ArcanistLinter":1431,"ArcanistLintSeverity":1509}},"xmap":{"AutoPEP8FormatLinter":["ArcanistExternalLinter"]}},"213c3145da34ed6dfc0d70d628a2a086":{"have":{"class":{"CheckDocLinter":106}},"need":{"function":{"pht":323,"id":1868},"class":{"ArcanistExternalLinter":129,"ArcanistLintMessage":1875,"Filesystem":737,"ArcanistLinter":1923,"ArcanistLintSeverity":2009}},"xmap":{"CheckDocLinter":["ArcanistExternalLinter"]}},"7bab1f879b8a86dd9977b8c0d075935f":{"have":{"class":{"ClangFormatLinter":79}},"need":{"function":{"pht":302,"execx":787,"id":1664},"class":{"ArcanistExternalLinter":105,"ArcanistLintMessage":1671,"Filesystem":1515,"ArcanistLinter":1778,"ArcanistLintSeverity":1856}},"xmap":{"ClangFormatLinter":["ArcanistExternalLinter"]}},"eb7e74d16adb568d20df19ef87ef4ff7":{"have":{"class":{"ABCUnitTestEngine":96}},"need":{"function":{"pht":2800,"id":3034,"array_mergev":3905},"class":{"ArcanistUnitTestEngine":122,"ExecFuture":2108,"ArcanistUsageException":2768,"ABCTestResultParser":3041}},"xmap":{"ABCUnitTestEngine":["ArcanistUnitTestEngine"]}},"15794ecbaa1375dfc4e61065c469a370":{"have":{"class":{"ABCTestResultParser":19}},"need":{"function":{"id":690},"class":{"ArcanistTestResultParser":47,"ArcanistUnitTestResult":697}},"xmap":{"ABCTestResultParser":["ArcanistTestResultParser"]}}}
\ No newline at end of file
diff --git a/arcanist/__phutil_library_map__.php b/arcanist/__phutil_library_map__.php
--- a/arcanist/__phutil_library_map__.php
+++ b/arcanist/__phutil_library_map__.php
@@ -9,12 +9,16 @@
 phutil_register_library_map(array(
   '__library_version__' => 2,
   'class' => array(
+    'ABCTestResultParser' => 'unit/ABCTestResultParser.php',
+    'ABCUnitTestEngine' => 'unit/ABCUnitTestEngine.php',
     'AutoPEP8FormatLinter' => 'linter/AutoPEP8Linter.php',
     'CheckDocLinter' => 'linter/CheckDocLinter.php',
     'ClangFormatLinter' => 'linter/ClangFormatLinter.php',
   ),
   'function' => array(),
   'xmap' => array(
+    'ABCTestResultParser' => 'ArcanistTestResultParser',
+    'ABCUnitTestEngine' => 'ArcanistUnitTestEngine',
     'AutoPEP8FormatLinter' => 'ArcanistExternalLinter',
     'CheckDocLinter' => 'ArcanistExternalLinter',
     'ClangFormatLinter' => 'ArcanistExternalLinter',
diff --git a/arcanist/unit/ABCTestResultParser.php b/arcanist/unit/ABCTestResultParser.php
new file mode 100644
--- /dev/null
+++ b/arcanist/unit/ABCTestResultParser.php
@@ -0,0 +1,49 @@
+<?php
+
+final class ABCTestResultParser extends ArcanistTestResultParser {
+  static function reduceErrors($reducedErrors, $error) {
+    /*
+     * $error format:
+     *   [0]: full mask
+     *   [1]: test name
+     *   [2]: line number
+     *   [3]: test case
+     *   [4]: failed check
+     */
+    $testName = $error[1];
+    if(!array_key_exists($testName, $reducedErrors)) {
+      $reducedErrors[$testName] = "";
+    } else {
+      $reducedErrors[$testName] .= "\n";
+    }
+    $reducedErrors[$testName] .= $error[3]."(".$error[2]."): ".$error[4];
+    
+    return $reducedErrors;
+  }
+
+  public function parseTestResults($test, $output) {
+    if ($output['return'] == 0) {
+      return array(id(new ArcanistUnitTestResult())
+        ->setName($test)
+        ->setDuration($output['duration'])
+        ->setResult(ArcanistUnitTestResult::RESULT_PASS));
+    }
+
+    $pattern = '/.+\/test\/(\w+.cpp)\((\d+)\): error: in "(.+)": check (.+) has failed/';
+    preg_match_all($pattern, $output['stdout'], $errors, $flags=PREG_SET_ORDER);
+
+    $reducedErrors = array_reduce($errors, "ABCTestResultParser::reduceErrors", array());
+
+    $results = [];
+    foreach ($reducedErrors as $testName => $userData) {
+      $results[] = id(new ArcanistUnitTestResult())
+        ->setName($testName)
+        ->setUserData($userData)
+        ->setResult(ArcanistUnitTestResult::RESULT_BROKEN);
+    }
+    
+    return $results;
+  }
+}
+
+?>
\ No newline at end of file
diff --git a/arcanist/unit/ABCUnitTestEngine.php b/arcanist/unit/ABCUnitTestEngine.php
new file mode 100644
--- /dev/null
+++ b/arcanist/unit/ABCUnitTestEngine.php
@@ -0,0 +1,153 @@
+<?php
+/**
+ * Builds, runs, and interprets bitcoin unit test & coverage results.
+ */
+final class ABCUnitTestEngine extends ArcanistUnitTestEngine {
+
+  private $projectRoot;
+  private $buildDirectory;
+  private $testBinary;
+  
+  private function findBuildDirectoryAndBinary() {
+    /*
+     * Try to find the test_bitcoin binary
+     * 
+     * Assumption: it can be located under any subdirectory/src/test/ 
+     * 
+     * Try from the current directory first.
+     * If not found, try under every subdirectory of project root.
+     * In case of multiple binaries pick the most recent one.
+     */
+    $this->buildDirectory = getcwd();
+    $this->testBinary = $this->buildDirectory.'/src/test/test_bitcoin';
+    if (is_executable($this->testBinary)) {
+        return true;
+    }
+
+    $this->buildDirectory = null;
+    $this->testBinary = null;
+    $recentTime = 0;
+    $dirs = glob($this->projectRoot.'/*', GLOB_ONLYDIR);
+    foreach($dirs as $dir) {
+      $testPath = $dir.'/src/test/test_bitcoin';
+      if (is_executable($testPath)) {
+        $lastModificationTime = filemtime($testPath);
+        if ($lastModificationTime > $recentTime) {
+          $this->buildDirectory = $dir;
+          $this->testBinary = $testPath;
+          $recentTime = $lastModificationTime;
+        }
+      }
+    }
+
+    if (!is_null($this->testBinary)) {
+      return true;
+    }
+
+    return false;
+  }
+
+  private function needsBuild($file) {
+    $filePath = FileSystem::resolvePath($file, $this->projectRoot);
+    return filemtime($filePath) > filemtime($this->testBinary);
+  }
+
+  private function findTest($file) {
+    $pathinfo = pathinfo($file);
+    // If the modifications is on a test file, return the test directly
+    if (substr($pathinfo['basename'], -10) == '_tests.cpp' &&
+      (($pathinfo['dirname'] === 'src/test') ||
+      ($pathinfo['dirname'] === 'src/rpc/test') ||
+      ($pathinfo['dirname'] === 'src/wallet/test'))) {
+      return $pathinfo['filename'];
+    }
+
+    // Otherwise search if a corresponding test exists
+    $testName = $pathinfo['filename'].'_tests';
+    $testFile = $testName.'.cpp';
+    $tests = scandir($this->getWorkingCopy()->getProjectPath('/src/test'));
+    if (in_array($testFile, $tests)) {
+      return $testName;
+    }
+    return NULL;
+  }
+
+  private function makeTestCommand($test) {
+    return $this->testBinary.' --run_test='.$test;
+  }
+  
+  private function executeCommand($cmd) {
+    $timeStart = microtime(true);
+    $future = new ExecFuture($cmd);
+    list($ret, $stdout, $stderr) = $future->resolve();
+    $timeEnd = microtime(true);
+
+    return ['return' => $ret, 'stdout' => $stdout, 'stderr' => $stderr,
+      'duration' => $timeEnd - $timeStart];
+  }
+  
+  public function getEngineConfigurationName() {
+    return 'bitcoin-test-engine';
+  }
+
+  protected function supportsRunAllTests() {
+    return true;
+  }
+
+  public function shouldEchoTestResults() {
+    // i.e. this engine does not output its own results.
+    return false; 
+  }
+
+  public function run() {
+    $this->projectRoot = $this->getWorkingCopy()->getProjectRoot();
+    
+    if (!$this->findBuildDirectoryAndBinary()) {
+      throw new ArcanistUsageException(
+        pht("Unable to find test_bitcoin binary.\n".
+            "Make sure it has been compiled and cd to your build folder"));
+    }
+
+    if ($this->getRunAllTests()) {
+      $output = $this->executeCommand($this->testBinary);
+      return id(new ABCTestResultParser())
+        ->setEnableCoverage(false)
+        ->setProjectRoot($this->projectRoot)
+        ->setStderr($output['stderr'])
+        ->parseTestResults('All unit tests', $output);
+    }
+
+    $paths = $this->getPaths();
+    if (empty($paths)) {
+      return array();
+    }
+    
+    $tests = [];
+    foreach ($paths as $path) {
+      /* Check that the file has been built before searching for a test */
+      if ($this->needsBuild($path)) {
+        throw new ArcanistUsageException(
+          pht("The file %s has been modified since last build.\n".
+              "Please rebuild before running the unit tests", $path));
+      }
+      $test = $this->findTest($path);
+      if (!is_null($test)) {
+        $tests[] = $test;
+      }
+    }
+    $tests = array_unique($tests);
+
+    $results = [];
+    foreach ($tests as $test) {
+      $cmd = $this->makeTestCommand($test);
+      $output = $this->executeCommand($cmd);
+      $results[] = id(new ABCTestResultParser())
+        ->setEnableCoverage(false)
+        ->setProjectRoot($this->projectRoot)
+        ->setStderr($output['stderr'])
+        ->parseTestResults($test, $output);
+    }
+    
+    return array_mergev($results);
+  }
+}
\ No newline at end of file