Improve argument passthru behavior to make added args available to test engines.

Summary:
When you add new arguments to the unit command, they need to be
threaded through to the unit engine. This enables you to specify passthru
command which will be shipped through the callstack.

Test Plan:
Ran 'arc diff --maxtests 8 --apply-patches --trace' and verified
resulting behavior was correct.

Differential Revision: 207877
Reviewed By: dschleimer
Reviewers: dschleimer
CC: dschleimer
Revert Plan:
OK

src/unit/engine/base/ArcanistBaseUnitTestEngine.php

@@ -20,6 +20,7 @@ abstract class ArcanistBaseUnitTestEngine {
 
   private $workingCopy;
   private $paths;
+  private $arguments = array();
 
   final public function __construct() {
 
@@ -45,6 +46,15 @@ abstract class ArcanistBaseUnitTestEngine {
     return $this->paths;
   }
 
+  final public function setArguments(array $arguments) {
+    $this->arguments = $arguments;
+    return $this;
+  }
+
+  final public function getArgument($key, $default = null) {
+    return idx($this->arguments, $key, $default);
+  }
+
   abstract public function run();
 
 }

src/unit/engine/base/__init__.php

@@ -6,5 +6,7 @@
 
 
 
+phutil_require_module('phutil', 'utils');
+
 
 phutil_require_source('ArcanistBaseUnitTestEngine.php');

src/workflow/base/ArcanistBaseWorkflow.php

@@ -555,4 +555,29 @@ class ArcanistBaseWorkflow {
     return array('any');
   }
 
+  protected function getPassthruArgumentsAsMap($command) {
+    $map = array();
+    foreach ($this->getCompleteArgumentSpecification() as $key => $spec) {
+      if (!empty($spec['passthru'][$command])) {
+        if (isset($this->arguments[$key])) {
+          $map[$key] = $this->arguments[$key];
+        }
+      }
+    }
+    return $map;
+  }
+
+  protected function getPassthruArgumentsAsArgv($command) {
+    $spec = $this->getCompleteArgumentSpecification();
+    $map = $this->getPassthruArgumentsAsMap($command);
+    $argv = array();
+    foreach ($map as $key => $value) {
+      $argv[] = '--'.$key;
+      if (!empty($spec[$key]['param'])) {
+        $argv[] = $value;
+      }
+    }
+    return $argv;
+  }
+
 }

src/workflow/diff/ArcanistDiffWorkflow.php

@@ -149,10 +149,16 @@ EOTEXT
       'lintall' => array(
         'help' =>
           "Raise all lint warnings, not just those on lines you changed.",
+        'passthru' => array(
+          'lint' => true,
+        ),
       ),
       'advice' => array(
         'help' =>
           "Raise lint advice in addition to lint warnings and errors.",
+        'passthru' => array(
+          'lint' => true,
+        ),
       ),
       'apply-patches' => array(
         'help' =>
@@ -161,12 +167,18 @@ EOTEXT
         'conflicts' => array(
           'never-apply-patches' => true,
         ),
+        'passthru' => array(
+          'lint' => true,
+        ),
       ),
       'never-apply-patches' => array(
         'help' => 'Never apply patches suggested by lint.',
         'conflicts' => array(
           'apply-patches' => true,
         ),
+        'passthru' => array(
+          'lint' => true,
+        ),
       ),
       '*' => 'paths',
     );
@@ -836,19 +848,7 @@ EOTEXT
 
     echo "Linting...\n";
     try {
-      $argv = array();
-      if ($this->getArgument('lintall')) {
-        $argv[] = '--lintall';
-      }
-      if ($this->getArgument('advice')) {
-        $argv[] = '--advice';
-      }
-      if ($this->getArgument('apply-patches')) {
-        $argv[] = '--apply-patches';
-      }
-      if ($this->getArgument('never-apply-patches')) {
-        $argv[] = '--never-apply-patches';
-      }
+      $argv = $this->getPassthruArgumentsAsArgv('lint');
       if ($repository_api instanceof ArcanistSubversionAPI) {
         $argv = array_merge($argv, array_keys($paths));
       } else {
@@ -905,7 +905,7 @@ EOTEXT
 
     echo "Running unit tests...\n";
     try {
-      $argv = array();
+      $argv = $this->getPassthruArgumentsAsArgv('unit');
       if ($repository_api instanceof ArcanistSubversionAPI) {
         $argv = array_merge($argv, array_keys($paths));
       }

src/workflow/unit/ArcanistUnitWorkflow.php

@@ -77,6 +77,7 @@ EOTEXT
     $engine = newv($engine_class, array());
     $engine->setWorkingCopy($working_copy);
     $engine->setPaths($paths);
+    $engine->setArguments($this->getPassthruArgumentsAsMap('unit'));
 
     $results = $engine->run();