diff --git a/src/Commands/ChurnCommand.php b/src/Commands/ChurnCommand.php
index aa185fa7..32b4e2b0 100644
--- a/src/Commands/ChurnCommand.php
+++ b/src/Commands/ChurnCommand.php
@@ -22,7 +22,7 @@ class ChurnCommand extends Command
     public function __construct()
     {
         parent::__construct();
-        $commitCountAssessor = new GitCommitCountAssessor(new CommandService);
+        $commitCountAssessor    = new GitCommitCountAssessor(new CommandService);
         $complexityAssessor     = new CyclomaticComplexityAssessor();
         $this->resultsGenerator = new ResultsGenerator($commitCountAssessor, $complexityAssessor);
         $this->fileManager      = new FileManager;
diff --git a/tests/Unit/Services/CommandServiceTest.php b/tests/Unit/Services/CommandServiceTest.php
new file mode 100644
index 00000000..2b024e6a
--- /dev/null
+++ b/tests/Unit/Services/CommandServiceTest.php
@@ -0,0 +1,17 @@
+<?php declare(strict_types = 1);
+
+namespace Churn\Tests\Results;
+
+use Churn\Tests\BaseTestCase;
+use Churn\Services\CommandService;
+
+class CommandServiceTest extends BaseTestCase
+{
+    /** @test */
+    public function it_returns_the_output_of_a_command()
+    {
+        $commandService = new CommandService;
+        $result = $commandService->execute("echo hi");
+        $this->assertSame(["hi"], $result);
+    }
+}
\ No newline at end of file