Add support for Composer2

.travis.yml

@@ -8,6 +8,10 @@ php:
   - 7.0
   - 7.1
   - 7.2
+  - 7.3
+  - 7.4
+  - 8.0
+  - 8.1
   - hhvm
 
 matrix:

composer.json

@@ -13,11 +13,11 @@
     "source": "https://github.com/BernardoSilva/git-hooks-installer-plugin"
   },
   "require": {
-    "composer-plugin-api": "^1.0",
+    "composer-plugin-api": "^2.0",
     "symfony/process": ">=2.3"
   },
   "require-dev": {
-    "composer/composer": "~1.0@dev",
+    "composer/composer": "~2.0@dev",
     "phpunit/phpunit": "^4.8",
     "squizlabs/php_codesniffer": "^2.0"
   },

src/GitHooksInstallerPlugin/Composer/Plugin.php

@@ -19,4 +19,12 @@ public function activate(Composer $composer, IOInterface $io)
         $installer = new Installer($io, $composer);
         $composer->getInstallationManager()->addInstaller($installer);
     }
+
+    public function deactivate(Composer $composer, IOInterface $io)
+    {
+    }
+
+    public function uninstall(Composer $composer, IOInterface $io)
+    {
+    }
 }

tests/unit/GitHooksInstallerPlugin/Composer/InstallerTest.php

@@ -4,10 +4,10 @@
 
 use Composer\Package\Package;
 use Composer\Util\Filesystem;
-use Composer\TestCase;
 use Composer\Composer;
 use Composer\Config;
 use Composer\Package\RootPackage;
+use PHPUnit\Framework\TestCase;
 
 class InstallerTest extends TestCase
 {
@@ -22,7 +22,7 @@ class InstallerTest extends TestCase
     protected $package;
     protected function setUp()
     {
-        $this->fs = new Filesystem;
+        $this->fs = new Filesystem();
         $this->composer = new Composer();
         $this->config = new Config();
         $this->composer->setConfig($this->config);
@@ -51,6 +51,18 @@ protected function setUp()
         );
         $this->io = $this->getMock('Composer\IO\IOInterface');
     }
+
+    private function ensureDirectoryExistsAndClear($directory)
+    {
+        $fs = new Filesystem();
+
+        if (is_dir($directory)) {
+            $fs->removeDirectory($directory);
+        }
+
+        mkdir($directory, 0777, true);
+    }
+
     protected function tearDown()
     {
         $this->fs->removeDirectory($this->vendorDir);

tests/unit/GitHooksInstallerPlugin/Composer/PluginTest.php

@@ -3,9 +3,11 @@
 namespace BernardoSilva\GitHooksInstallerPlugin\Composer;
 
 use Composer\Installer\InstallationManager;
-use Composer\TestCase;
 use Composer\Composer;
 use Composer\Config;
+use Composer\IO\IOInterface;
+use Composer\Util\Loop;
+use PHPUnit\Framework\TestCase;
 
 class PluginTest extends TestCase
 {
@@ -21,8 +23,11 @@ protected function setUp()
         $this->composer = new Composer();
         $this->config = new Config();
         $this->composer->setConfig($this->config);
-        $this->composer->setInstallationManager(new InstallationManager());
-        $this->io = $this->getMock('Composer\IO\IOInterface');
+
+        $loop = $this->getMockBuilder(Loop::class)->disableOriginalConstructor()->getMock();
+        $this->io = $this->getMock(IOInterface::class);
+
+        $this->composer->setInstallationManager(new InstallationManager($loop, $this->io));
     }
 
     public function testActivateAddsInstallerSuccessfully()