[Console] Add ConsoleLogger::hasErrored()

Author: nicolas-grekas

src/Symfony/Component/Console/Logger/ConsoleLogger.php

@@ -59,6 +59,7 @@ class ConsoleLogger extends AbstractLogger
         LogLevel::INFO => self::INFO,
         LogLevel::DEBUG => self::INFO,
     );
+    private $errored = false;
 
     /**
      * @param OutputInterface $output
@@ -81,11 +82,14 @@ public function log($level, $message, array $context = array())
             throw new InvalidArgumentException(sprintf('The log level "%s" does not exist.', $level));
         }
 
+        $output = $this->output;
+
         // Write to the error output if necessary and available
-        if ($this->formatLevelMap[$level] === self::ERROR && $this->output instanceof ConsoleOutputInterface) {
-            $output = $this->output->getErrorOutput();
-        } else {
-            $output = $this->output;
+        if ($this->formatLevelMap[$level] === self::ERROR) {
+            if ($this->output instanceof ConsoleOutputInterface) {
+                $output = $output->getErrorOutput();
+            }
+            $this->errored = true;
         }
 
         // the if condition check isn't necessary -- it's the same one that $output will do internally anyway.
@@ -95,6 +99,14 @@ public function log($level, $message, array $context = array())
         }
     }
 
+    /**
+     * Returns true when any messages have been logged at error levels.
+     */
+    public function hasErrored()
+    {
+        return $this->errored;
+    }
+
     /**
      * Interpolates context values into the message placeholders.
      *

src/Symfony/Component/Console/Tests/Logger/ConsoleLoggerTest.php

@@ -88,4 +88,17 @@ public function provideOutputMappingParams()
             array(LogLevel::EMERGENCY, OutputInterface::VERBOSITY_QUIET, true, $quietMap),
         );
     }
+
+    public function testHasErrored()
+    {
+        $logger = new ConsoleLogger(new BufferedOutput());
+
+        $this->assertFalse($logger->hasErrored());
+
+        $logger->warning('foo');
+        $this->assertFalse($logger->hasErrored());
+
+        $logger->error('bar');
+        $this->assertTrue($logger->hasErrored());
+    }
 }