added redis test

tests/Redis/RedisTest.php

@@ -0,0 +1,40 @@
+<?php namespace Redis;
+
+use Ipunkt\LaravelHealthcheck\HealthChecker\CheckFailedException;
+use Ipunkt\LaravelHealthcheck\Redis\RedisChecker;
+use Ipunkt\LaravelHealthcheck\Redis\RedisConnnectionChecker;
+use Mockery;
+
+/**
+ * Class RedisTest
+ * @package Redis
+ */
+class RedisTest extends \TestCase {
+
+	/**
+	 * @test
+	 * @dataProvider dataProvider
+	 */
+	public function redis_checker( $connections, $succeeds ) {
+
+		$connectionChecker = Mockery::mock(RedisConnnectionChecker::class);
+
+		$checker = new RedisChecker( $connectionChecker );
+		$checker->setConnectionNames($connections);
+
+		if( !$succeeds )
+			$this->expectException( CheckFailedException::class );
+
+		foreach( $connections as $connection )
+			$connectionChecker->shouldReceive('check')->with($connection)->once()->andReturn( $succeeds );
+
+		$checker->check();
+	}
+
+	public function dataProvider(  ) {
+		return [
+			[ [ 'test' ], true ],
+			[ [ 'cookies' ], false ],
+		];
+	}
+}