diff --git a/tests/Composer/Test/Fixtures/installer/SAMPLE b/tests/Composer/Test/Fixtures/installer/SAMPLE
index 618f6edf2..90afe7058 100644
--- a/tests/Composer/Test/Fixtures/installer/SAMPLE
+++ b/tests/Composer/Test/Fixtures/installer/SAMPLE
@@ -10,5 +10,7 @@
 <installed.json file definition>
 --INSTALLED:DEV--
 <installed_dev.json file definition>
---EXPECT-- or --EXPECT:UPDATE-- or --EXPECT:DEV-- or --EXPECT:UPDATE:DEV--
+--RUN--
+install
+--EXPECT--
 <output (stringified operations)>
\ No newline at end of file
diff --git a/tests/Composer/Test/Fixtures/installer/aliased-priority-conflicting.test b/tests/Composer/Test/Fixtures/installer/aliased-priority-conflicting.test
index 9c015fb9b..1ffa936b4 100644
--- a/tests/Composer/Test/Fixtures/installer/aliased-priority-conflicting.test
+++ b/tests/Composer/Test/Fixtures/installer/aliased-priority-conflicting.test
@@ -42,6 +42,8 @@ Aliases take precedence over default package even if default is selected
         "a/req": "dev-feature-foo as dev-master"
     }
 }
+--RUN--
+install
 --EXPECT--
 Marking a/req (dev-master feat.f) as installed, alias of a/req (dev-feature-foo feat.f)
 Installing a/req (dev-feature-foo feat.f)
diff --git a/tests/Composer/Test/Fixtures/installer/aliased-priority.test b/tests/Composer/Test/Fixtures/installer/aliased-priority.test
index 048399584..35af86fcd 100644
--- a/tests/Composer/Test/Fixtures/installer/aliased-priority.test
+++ b/tests/Composer/Test/Fixtures/installer/aliased-priority.test
@@ -44,6 +44,8 @@ Aliases take precedence over default package
         "a/c": "dev-feature-foo as dev-master"
     }
 }
+--RUN--
+install
 --EXPECT--
 Installing a/b (dev-master forked)
 Marking a/b (1.0.x-dev forked) as installed, alias of a/b (dev-master forked)
diff --git a/tests/Composer/Test/Fixtures/installer/install-dev.test b/tests/Composer/Test/Fixtures/installer/install-dev.test
index 0dfa1bec1..3b03675bb 100644
--- a/tests/Composer/Test/Fixtures/installer/install-dev.test
+++ b/tests/Composer/Test/Fixtures/installer/install-dev.test
@@ -18,6 +18,8 @@ Installs a package in dev env
         "a/b": "1.0.0"
     }
 }
---EXPECT:DEV--
+--RUN--
+install --dev
+--EXPECT--
 Installing a/a (1.0.0)
 Installing a/b (1.0.0)
\ No newline at end of file
diff --git a/tests/Composer/Test/Fixtures/installer/install-reference.test b/tests/Composer/Test/Fixtures/installer/install-reference.test
index 433b6fcbd..f8e696f99 100644
--- a/tests/Composer/Test/Fixtures/installer/install-reference.test
+++ b/tests/Composer/Test/Fixtures/installer/install-reference.test
@@ -17,5 +17,7 @@ Installs a dev package forcing it's reference
         "a/a": "dev-master#def000"
     }
 }
+--RUN--
+install
 --EXPECT--
 Installing a/a (dev-master def000)
diff --git a/tests/Composer/Test/Fixtures/installer/install-simple.test b/tests/Composer/Test/Fixtures/installer/install-simple.test
index 6cc46d3aa..008bf76e7 100644
--- a/tests/Composer/Test/Fixtures/installer/install-simple.test
+++ b/tests/Composer/Test/Fixtures/installer/install-simple.test
@@ -14,5 +14,7 @@ Installs a simple package with exact match requirement
         "a/a": "1.0.0"
     }
 }
+--RUN--
+install
 --EXPECT--
 Installing a/a (1.0.0)
\ No newline at end of file
diff --git a/tests/Composer/Test/Fixtures/installer/update-all.test b/tests/Composer/Test/Fixtures/installer/update-all.test
index e7641dbb9..b5806687e 100644
--- a/tests/Composer/Test/Fixtures/installer/update-all.test
+++ b/tests/Composer/Test/Fixtures/installer/update-all.test
@@ -36,6 +36,8 @@ Updates updateable packages
 [
     { "name": "a/b", "version": "1.0.0" }
 ]
---EXPECT:UPDATE:DEV--
+--RUN--
+update --dev
+--EXPECT--
 Updating a/a (1.0.0) to a/a (1.0.1)
 Updating a/b (1.0.0) to a/b (2.0.0)
\ No newline at end of file
diff --git a/tests/Composer/Test/Fixtures/installer/update-reference.test b/tests/Composer/Test/Fixtures/installer/update-reference.test
index c6418a8eb..9dca245ee 100644
--- a/tests/Composer/Test/Fixtures/installer/update-reference.test
+++ b/tests/Composer/Test/Fixtures/installer/update-reference.test
@@ -24,5 +24,7 @@ Updates a dev package forcing it's reference
         "source": { "reference": "abc123", "url": "", "type": "git" }
     }
 ]
+--RUN--
+install
 --EXPECT--
 Updating a/a (dev-master abc123) to a/a (dev-master def000)
diff --git a/tests/Composer/Test/InstallerTest.php b/tests/Composer/Test/InstallerTest.php
index 6ceaa069e..6de28f45f 100644
--- a/tests/Composer/Test/InstallerTest.php
+++ b/tests/Composer/Test/InstallerTest.php
@@ -12,6 +12,7 @@
 namespace Composer\Test;
 
 use Composer\Installer;
+use Composer\Console\Application;
 use Composer\Config;
 use Composer\Json\JsonFile;
 use Composer\Repository\ArrayRepository;
@@ -24,6 +25,8 @@ use Composer\Test\Mock\FactoryMock;
 use Composer\Test\Mock\InstalledFilesystemRepositoryMock;
 use Composer\Test\Mock\InstallationManagerMock;
 use Composer\Test\Mock\WritableRepositoryMock;
+use Symfony\Component\Console\Input\StringInput;
+use Symfony\Component\Console\Output\StreamOutput;
 
 class InstallerTest extends TestCase
 {
@@ -121,7 +124,7 @@ class InstallerTest extends TestCase
     /**
      * @dataProvider getIntegrationTests
      */
-    public function testIntegration($file, $message, $condition, $composer, $lock, $installed, $installedDev, $update, $dev, $expect)
+    public function testIntegration($file, $message, $condition, $composer, $lock, $installed, $installedDev, $run, $expect)
     {
         if ($condition) {
             eval('$res = '.$condition.';');
@@ -177,14 +180,31 @@ class InstallerTest extends TestCase
             $autoloadGenerator
         );
 
-        $installer->setDevMode($dev)->setUpdate($update);
+        $application = new Application;
+        $application->get('install')->setCode(function ($input, $output) use ($installer) {
+            $installer->setDevMode($input->getOption('dev'));
 
-        $result = $installer->run();
-        $this->assertTrue($result, $output);
+            return $installer->run();
+        });
 
-        $expectedInstalled   = isset($options['install']) ? $options['install'] : array();
-        $expectedUpdated     = isset($options['update']) ? $options['update'] : array();
-        $expectedUninstalled = isset($options['uninstall']) ? $options['uninstall'] : array();
+        $application->get('update')->setCode(function ($input, $output) use ($installer) {
+            $installer
+                ->setDevMode($input->getOption('dev'))
+                ->setUpdate(true)
+                ->setUpdateWhitelist($input->getArgument('packages'));
+
+            return $installer->run();
+        });
+
+        if (!preg_match('{^(install|update)\b}', $run)) {
+            throw new \UnexpectedValueException('The run command only supports install and update');
+        }
+
+        $application->setAutoExit(false);
+        $appOutput = fopen('php://memory', 'w+');
+        $result = $application->run(new StringInput($run), new StreamOutput($appOutput));
+        fseek($appOutput, 0);
+        $this->assertEquals(0, $result, $output . stream_get_contents($appOutput));
 
         $installationManager = $composer->getInstallationManager();
         $this->assertSame($expect, implode("\n", $installationManager->getTrace()));
@@ -210,7 +230,8 @@ class InstallerTest extends TestCase
                 (?:--LOCK--\s*(?P<lock>'.$content.'))?\s*
                 (?:--INSTALLED--\s*(?P<installed>'.$content.'))?\s*
                 (?:--INSTALLED:DEV--\s*(?P<installedDev>'.$content.'))?\s*
-                --EXPECT(?P<update>:UPDATE)?(?P<dev>:DEV)?--\s*(?P<expect>.*?)\s*
+                --RUN--\s*(?P<run>.*?)\s*
+                --EXPECT--\s*(?P<expect>.*?)\s*
             $}xs';
 
             $installed = array();
@@ -231,8 +252,7 @@ class InstallerTest extends TestCase
                     if (!empty($match['installedDev'])) {
                         $installedDev = JsonFile::parseJson($match['installedDev']);
                     }
-                    $update = !empty($match['update']);
-                    $dev = !empty($match['dev']);
+                    $run = $match['run'];
                     $expect = $match['expect'];
                 } catch (\Exception $e) {
                     die(sprintf('Test "%s" is not valid: '.$e->getMessage(), str_replace($fixturesDir.'/', '', $file)));
@@ -241,7 +261,7 @@ class InstallerTest extends TestCase
                 die(sprintf('Test "%s" is not valid, did not match the expected format.', str_replace($fixturesDir.'/', '', $file)));
             }
 
-            $tests[] = array(str_replace($fixturesDir.'/', '', $file), $message, $condition, $composer, $lock, $installed, $installedDev, $update, $dev, $expect);
+            $tests[] = array(str_replace($fixturesDir.'/', '', $file), $message, $condition, $composer, $lock, $installed, $installedDev, $run, $expect);
         }
 
         return $tests;