diff --git a/module/CLI/test/Install/Plugin/ApplicationConfigCustomizerPluginTest.php b/module/CLI/test/Install/Plugin/ApplicationConfigCustomizerPluginTest.php
index d0a4505d..2b30a328 100644
--- a/module/CLI/test/Install/Plugin/ApplicationConfigCustomizerPluginTest.php
+++ b/module/CLI/test/Install/Plugin/ApplicationConfigCustomizerPluginTest.php
@@ -78,7 +78,6 @@ class ApplicationConfigCustomizerPluginTest extends TestCase
         /** @var MethodProphecy $ask */
         $ask = $this->questionHelper->ask(Argument::cetera())->willReturn(true);
 
-
         $config = new CustomizableAppConfig();
         $config->setApp([
             'SECRET' => 'foo',
diff --git a/module/CLI/test/Install/Plugin/DatabaseConfigCustomizerPluginTest.php b/module/CLI/test/Install/Plugin/DatabaseConfigCustomizerPluginTest.php
new file mode 100644
index 00000000..85d18225
--- /dev/null
+++ b/module/CLI/test/Install/Plugin/DatabaseConfigCustomizerPluginTest.php
@@ -0,0 +1,152 @@
+<?php
+namespace ShlinkioTest\Shlink\CLI\Install\Plugin;
+
+use PHPUnit\Framework\TestCase;
+use Prophecy\Argument;
+use Prophecy\Prophecy\MethodProphecy;
+use Prophecy\Prophecy\ObjectProphecy;
+use Shlinkio\Shlink\CLI\Install\Plugin\DatabaseConfigCustomizerPlugin;
+use Shlinkio\Shlink\CLI\Model\CustomizableAppConfig;
+use Symfony\Component\Console\Helper\QuestionHelper;
+use Symfony\Component\Console\Input\ArrayInput;
+use Symfony\Component\Console\Output\NullOutput;
+use Symfony\Component\Console\Question\ConfirmationQuestion;
+use Symfony\Component\Filesystem\Filesystem;
+
+class DatabaseConfigCustomizerPluginTest extends TestCase
+{
+    /**
+     * @var DatabaseConfigCustomizerPlugin
+     */
+    private $plugin;
+    /**
+     * @var ObjectProphecy
+     */
+    private $questionHelper;
+    /**
+     * @var ObjectProphecy
+     */
+    private $filesystem;
+
+    public function setUp()
+    {
+        $this->questionHelper = $this->prophesize(QuestionHelper::class);
+        $this->filesystem = $this->prophesize(Filesystem::class);
+
+        $this->plugin = new DatabaseConfigCustomizerPlugin(
+            $this->questionHelper->reveal(),
+            $this->filesystem->reveal()
+        );
+    }
+
+    /**
+     * @test
+     */
+    public function configIsRequestedToTheUser()
+    {
+        /** @var MethodProphecy $askSecret */
+        $askSecret = $this->questionHelper->ask(Argument::cetera())->willReturn('MySQL');
+        $config = new CustomizableAppConfig();
+
+        $this->plugin->process(new ArrayInput([]), new NullOutput(), $config);
+
+        $this->assertTrue($config->hasDatabase());
+        $this->assertEquals([
+            'DRIVER' => 'pdo_mysql',
+            'NAME' => 'MySQL',
+            'USER' => 'MySQL',
+            'PASSWORD' => 'MySQL',
+            'HOST' => 'MySQL',
+            'PORT' => 'MySQL',
+        ], $config->getDatabase());
+        $askSecret->shouldHaveBeenCalledTimes(6);
+    }
+
+    /**
+     * @test
+     */
+    public function overwriteIsRequestedIfValueIsAlreadySet()
+    {
+        /** @var MethodProphecy $ask */
+        $ask = $this->questionHelper->ask(Argument::cetera())->will(function (array $args) {
+            $last = array_pop($args);
+            return $last instanceof ConfirmationQuestion ? false : 'MySQL';
+        });
+        $config = new CustomizableAppConfig();
+        $config->setDatabase([
+            'DRIVER' => 'pdo_pgsql',
+            'NAME' => 'MySQL',
+            'USER' => 'MySQL',
+            'PASSWORD' => 'MySQL',
+            'HOST' => 'MySQL',
+            'PORT' => 'MySQL',
+        ]);
+
+        $this->plugin->process(new ArrayInput([]), new NullOutput(), $config);
+
+        $this->assertEquals([
+            'DRIVER' => 'pdo_mysql',
+            'NAME' => 'MySQL',
+            'USER' => 'MySQL',
+            'PASSWORD' => 'MySQL',
+            'HOST' => 'MySQL',
+            'PORT' => 'MySQL',
+        ], $config->getDatabase());
+        $ask->shouldHaveBeenCalledTimes(7);
+    }
+
+    /**
+     * @test
+     */
+    public function existingValueIsKeptIfRequested()
+    {
+        /** @var MethodProphecy $ask */
+        $ask = $this->questionHelper->ask(Argument::cetera())->willReturn(true);
+
+        $config = new CustomizableAppConfig();
+        $config->setDatabase([
+            'DRIVER' => 'pdo_pgsql',
+            'NAME' => 'MySQL',
+            'USER' => 'MySQL',
+            'PASSWORD' => 'MySQL',
+            'HOST' => 'MySQL',
+            'PORT' => 'MySQL',
+        ]);
+
+        $this->plugin->process(new ArrayInput([]), new NullOutput(), $config);
+
+        $this->assertEquals([
+            'DRIVER' => 'pdo_pgsql',
+            'NAME' => 'MySQL',
+            'USER' => 'MySQL',
+            'PASSWORD' => 'MySQL',
+            'HOST' => 'MySQL',
+            'PORT' => 'MySQL',
+        ], $config->getDatabase());
+        $ask->shouldHaveBeenCalledTimes(1);
+    }
+
+    /**
+     * @test
+     */
+    public function sqliteDatabaseIsImportedWhenRequested()
+    {
+        /** @var MethodProphecy $ask */
+        $ask = $this->questionHelper->ask(Argument::cetera())->willReturn(true);
+        /** @var MethodProphecy $copy */
+        $copy = $this->filesystem->copy(Argument::cetera())->willReturn(null);
+
+        $config = new CustomizableAppConfig();
+        $config->setDatabase([
+            'DRIVER' => 'pdo_sqlite',
+        ]);
+
+        $this->plugin->process(new ArrayInput([]), new NullOutput(), $config);
+
+        $this->assertEquals([
+            'DRIVER' => 'pdo_sqlite',
+        ], $config->getDatabase());
+        $ask->shouldHaveBeenCalledTimes(1);
+        $copy->shouldHaveBeenCalledTimes(1);
+    }
+}