diff --git a/tests/Composer/Test/Command/ExecCommandTest.php b/tests/Composer/Test/Command/ExecCommandTest.php
new file mode 100644
index 000000000..ee195c4b5
--- /dev/null
+++ b/tests/Composer/Test/Command/ExecCommandTest.php
@@ -0,0 +1,60 @@
+<?php declare(strict_types=1);
+
+/*
+ * This file is part of Composer.
+ *
+ * (c) Nils Adermann <naderman@naderman.de>
+ *     Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Composer\Test\Command;
+
+use Composer\Test\TestCase;
+
+class ExecCommandTest extends TestCase
+{
+    public function testListThrowsIfNoBinariesExist(): void
+    {
+        $composerDir = $this->initTempComposer();
+
+        $composerBinDir = "$composerDir/vendor/bin";
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage(
+            "No binaries found in composer.json or in bin-dir ($composerBinDir)"
+        );
+
+        $appTester = $this->getApplicationTester();
+        $appTester->run(['command' => 'exec', '--list' => true]);
+    }
+
+    public function testList(): void
+    {
+        $composerDir = $this->initTempComposer([
+            'bin' => [
+                'a'
+            ]
+        ]);
+
+        $composerBinDir = "$composerDir/vendor/bin";
+        mkdir($composerBinDir, 0777, true);
+        touch($composerBinDir . '/b');
+        touch($composerBinDir . '/b.bat');
+        touch($composerBinDir . '/c');
+
+        $appTester = $this->getApplicationTester();
+        $appTester->run(['command' => 'exec', '--list' => true]);
+
+        $output = $appTester->getDisplay(true);
+
+        $this->assertSame(
+            'Available binaries:
+- b
+- c
+- a (local)',
+            trim($output)
+        );
+    }
+}