diff --git a/tests/MageTest/Command/BuiltIn/UnlockCommandTest.php b/tests/MageTest/Command/BuiltIn/UnlockCommandTest.php
new file mode 100644
index 0000000..bd7ec91
--- /dev/null
+++ b/tests/MageTest/Command/BuiltIn/UnlockCommandTest.php
@@ -0,0 +1,126 @@
+<?php
+
+namespace MageTest\Command\BuiltIn;
+
+use Mage\Command\BuiltIn\UnlockCommand;
+use MageTest\TestHelper\BaseTest;
+use malkusch\phpmock\MockBuilder;
+
+/**
+ * Class UnlockCommandTest
+ * @package MageTest\Command\BuiltIn
+ * @coversDefaultClass Mage\Command\BuiltIn\UnlockCommand
+ * @uses malkusch\phpmock\MockBuilder
+ * @uses malkusch\phpmock\Mock
+ * @uses Mage\Command\AbstractCommand
+ * @uses Mage\Console
+ * @uses Mage\Console\Colors
+ */
+class UnlockCommandTest extends BaseTest
+{
+    /**
+     * @var UnlockCommand
+     */
+    private $unlockCommand;
+
+    public static $isUnlinkCalled;
+    public static $fileExistsResult;
+    public static $isFileExists;
+
+    /**
+     * @before
+     */
+    public function before()
+    {
+        $this->unlockCommand = new UnlockCommand();
+
+        self::$isUnlinkCalled = false;
+        self::$fileExistsResult = false;
+        self::$isFileExists = false;
+
+        $mockBuilder = new MockBuilder();
+        $fileExistsMock = $mockBuilder
+            ->setName('file_exists')
+            ->setNamespace('Mage\Command\BuiltIn')
+            ->setFunction(
+                function ($filePath) {
+                    UnlockCommandTest::$fileExistsResult = $filePath;
+                    return UnlockCommandTest::$isFileExists;
+                }
+            )
+            ->build();
+        $unlinkMock = $mockBuilder
+            ->setName('unlink')
+            ->setNamespace('Mage\Command\BuiltIn')
+            ->setFunction(
+                function () {
+                    UnlockCommandTest::$isUnlinkCalled = true;
+                }
+            )
+            ->build();
+        $getCwdMock = $mockBuilder
+            ->setNamespace('Mage\Command\BuiltIn')
+            ->setName('getcwd')
+            ->setFunction(
+                function () {
+                    return '';
+                }
+            )
+            ->build();
+
+        $fileExistsMock->disable();
+        $unlinkMock->disable();
+        $getCwdMock->disable();
+
+
+        $fileExistsMock->enable();
+        $unlinkMock->enable();
+        $getCwdMock->enable();
+
+        $configMock = $this->getMock('Mage\Config');
+        $configMock->expects($this->atLeastOnce())
+            ->method('getEnvironment')
+            ->willReturn('production');
+        $this->unlockCommand->setConfig($configMock);
+
+        $this->setUpConsoleStatics();
+    }
+
+    /**
+     * @covers ::run
+     */
+    public function testRun()
+    {
+        $expectedOutput = "\tUnlocked deployment to production environment\n\n";
+        $this->expectOutputString($expectedOutput);
+        $expectedLockFilePath = '/.mage/production.lock';
+
+        self::$isFileExists = true;
+
+        $actualExitCode = $this->unlockCommand->run();
+        $expectedExitCode = 0;
+
+        $this->assertTrue(self::$isUnlinkCalled);
+        $this->assertEquals($expectedExitCode, $actualExitCode);
+        $this->assertEquals($expectedLockFilePath, self::$fileExistsResult);
+    }
+
+    /**
+     * @covers ::run
+     */
+    public function testRunIfFileNotExist()
+    {
+        $expectedOutput = "\tUnlocked deployment to production environment\n\n";
+        $this->expectOutputString($expectedOutput);
+        $expectedLockFilePath = '/.mage/production.lock';
+
+        self::$isFileExists = false;
+
+        $actualExitCode = $this->unlockCommand->run();
+        $expectedExitCode = 0;
+
+        $this->assertFalse(self::$isUnlinkCalled);
+        $this->assertEquals($expectedExitCode, $actualExitCode);
+        $this->assertEquals($expectedLockFilePath, self::$fileExistsResult);
+    }
+}