Add throw support

composer.json

@@ -12,7 +12,8 @@
         }
     ],
     "require": {
-        "pmvc/pmvc": "*"
+        "pmvc/pmvc": "*",
+        "pmvc-plugin/annotation": "*"
     },
     "minimum-stability": "dev"
 }

src/_throw.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace PMVC;
+
+use Exception;
+
+${_INIT_CONFIG}[_CLASS] = __NAMESPACE__ . '\WrapThrow';
+
+class WrapThrow
+{
+    public function __invoke($willThrow, $caller, $phpunit, $error = true)
+    {
+        $annotation = \PMVC\plug('annotation');
+        $doc = $annotation->get($caller);
+        $expectedException = get($doc, 'expectedException');
+        $expectedExceptionMessage = get($doc, 'expectedExceptionMessage');
+        if (!empty($expectedException)) {
+            $phpunit->expectException($expectedException);
+        }
+        if (!empty($expectedExceptionMessage)) {
+            $phpunit->expectExceptionMessage($expectedExceptionMessage);
+        }
+        if (!$error) {
+            $willThrow();
+        } else {
+            try {
+                $willThrow();
+            } catch (Exception $e) {
+                throw new PMVCUnitException($e->getMessage(), 0);
+            }
+        }
+    }
+}