bug symfony#19757 [PhpUnitBridge] allow to pass a message as string (xabbuh)

This PR was merged into the 3.2-dev branch.

Discussion
----------

[PhpUnitBridge] allow to pass a message as string

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

Currently our tests for deprecation messages just pass "accidentally" (we never pass arrays but only strings).

Commits
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8ceed79 [PhpUnitBridge] allow to pass a message as string

Author: nicolas-grekas

src/Symfony/Bridge/PhpUnit/ErrorAssert.php

@@ -19,8 +19,8 @@
 final class ErrorAssert
 {
     /**
-     * @param string[] $expectedMessages Expected deprecation messages
-     * @param callable $testCode         A callable that is expected to trigger the deprecation messages
+     * @param string[]|string $expectedMessages Expected deprecation messages
+     * @param callable        $testCode         A callable that is expected to trigger the deprecation messages
      */
     public static function assertDeprecationsAreTriggered($expectedMessages, $testCode)
     {
@@ -32,9 +32,9 @@ public static function assertDeprecationsAreTriggered($expectedMessages, $testCo
     }
 
     /**
-     * @param int      $expectedType     Expected triggered error type (pass one of PHP's E_* constants)
-     * @param string[] $expectedMessages Expected error messages
-     * @param callable $testCode         A callable that is expected to trigger the error messages
+     * @param int             $expectedType     Expected triggered error type (pass one of PHP's E_* constants)
+     * @param string[]|string $expectedMessages Expected error messages
+     * @param callable        $testCode         A callable that is expected to trigger the error messages
      */
     public static function assertErrorsAreTriggered($expectedType, $expectedMessages, $testCode)
     {
@@ -63,6 +63,8 @@ public static function assertErrorsAreTriggered($expectedType, $expectedMessages
             throw $e;
         }
 
+        $expectedMessages = (array) $expectedMessages;
+
         \PHPUnit_Framework_Assert::assertCount(count($expectedMessages), $triggeredMessages);
 
         foreach ($triggeredMessages as $i => $message) {