Composer 2.0 compatibility (#62)

* Update composer.json

* Support both Composer versions 1 and 2

* Replace deprecated constants

* Try to run on Travis with both Composer 1.x and 2.x versions

* Try to run on Travis with both Composer 1.x and 2.x versions

* Try to run on Travis with both Composer 1.x and 2.x versions

* Add askForUpdate for composer 2.0

Author: Michael Wikberg

.travis.yml

@@ -1,8 +1,9 @@
 language: php
 
 env:
-  - CODECEPTION_VERSION: '^3.0'
-  - CODECEPTION_VERSION: '^4.0'
+  - CODECEPTION_VERSION='^3.0' COMPOSER=1
+  - CODECEPTION_VERSION='^4.0' COMPOSER=1
+  - CODECEPTION_VERSION='^4.0' COMPOSER=2
 
 php:
   - 5.6
@@ -12,8 +13,18 @@ php:
   - 7.3
   - 7.4
 
+jobs:
+  exclude:
+    - php: 5.6
+      env: CODECEPTION_VERSION='^4.0' COMPOSER=2
+    - php: 7.0
+      env: CODECEPTION_VERSION='^4.0' COMPOSER=2
+    - php: 7.1
+      env: CODECEPTION_VERSION='^4.0' COMPOSER=2
+
 before_script:
   - export COMPOSER_MEMORY_LIMIT=-1
+  - composer self-update --${COMPOSER}
   - composer require codeception/codeception:"$CODECEPTION_VERSION" --dev --prefer-source
   - if [ "^3.0" != "$CODECEPTION_VERSION" ]; then composer require codeception/module-filesystem codeception/module-cli codeception/module-asserts codeception/module-phpbrowser --dev; fi;
   - cp c3.php vendor/codeception/codeception/tests/data/claypit

Installer.php

@@ -6,10 +6,12 @@
 use Composer\DependencyResolver\Operation\UpdateOperation;
 use Composer\EventDispatcher\EventSubscriberInterface;
 use Composer\Installer\PackageEvent;
+use Composer\Installer\PackageEvents;
 use Composer\IO\IOInterface;
 use Composer\Plugin\PluginInterface;
 use Composer\Script\Event;
 use Composer\Script\ScriptEvents;
+use Composer\Semver\Comparator;
 
 class Installer implements PluginInterface, EventSubscriberInterface
 {
@@ -22,9 +24,20 @@ public function activate(Composer $composer, IOInterface $io)
     {
         $this->io = $io;
     }
-    
+
+    public function deactivate(Composer $composer, IOInterface $io)
+    {
+    }
+
+    public function uninstall(Composer $composer, IOInterface $io) {
+        $this->deleteFile();
+    }
+
     protected function isOperationOnC3(PackageEvent $event)
     {
+        if (static::composerV2()) {
+            return true;
+        }
         $name = '';
 
         if ($event->getOperation() instanceof InstallOperation) {
@@ -40,34 +53,50 @@ protected function isOperationOnC3(PackageEvent $event)
 
     public static function getSubscribedEvents()
     {
+        if (static::composerV2()) {
+            return [
+                ScriptEvents::POST_INSTALL_CMD => [
+                    ['copyC3V2', 0]
+                ],
+                ScriptEvents::POST_UPDATE_CMD => [
+                    ['askForUpdateV2', 0]
+                ],
+            ];
+        }
         return [
-            ScriptEvents::POST_PACKAGE_INSTALL => [
+            PackageEvents::POST_PACKAGE_INSTALL => [
                 ['copyC3', 0]
             ],
-            ScriptEvents::POST_PACKAGE_UPDATE => [
+            PackageEvents::POST_PACKAGE_UPDATE => [
                 ['askForUpdate', 0]
             ],
-            ScriptEvents::POST_PACKAGE_UNINSTALL => [
+            PackageEvents::POST_PACKAGE_UNINSTALL => [
                 ['deleteC3', 0]
             ]
         ];
     }
 
-    public static function copyC3ToRoot(Event $event)
-    {
-        $event->getIO()->write("<warning>c3 is now a Composer Plugin and installs c3.php automatically.</warning>");
-        $event->getIO()->write("<warning>Please remove current \"post-install-cmd\" and \"post-update-cmd\" hooks from your composer.json</warning>");
-    }
-
     public function copyC3(PackageEvent $event)
     {
         if (!$this->isOperationOnC3($event)) {
             return;
         }
+
+        $this->copyC3V2(null);
+    }
+
+    public function copyC3V2(Event $event)
+    {
         if ($this->c3NotChanged()) {
             $this->io->write("<comment>[codeception/c3]</comment> c3.php is already up-to-date");
             return;
         }
+        if (file_exists(getcwd() . DIRECTORY_SEPARATOR . 'c3.php')) {
+            $replace = $this->io->askConfirmation("<warning>c3.php has changed</warning> Do you want to replace c3.php with latest version?", false);
+            if (!$replace) {
+                return;
+            }
+        }
 
         $this->io->write("<comment>[codeception/c3]</comment> Copying c3.php to the root of your project...");
         copy(__DIR__ . DIRECTORY_SEPARATOR . 'c3.php', getcwd() . DIRECTORY_SEPARATOR.'c3.php');
@@ -79,15 +108,17 @@ public function askForUpdate(PackageEvent $event)
         if (!$this->isOperationOnC3($event) || $this->c3NotChanged()) {
             return;
         }
-        if (file_exists(getcwd() . DIRECTORY_SEPARATOR . 'c3.php')) {
-            $replace = $this->io->askConfirmation("<warning>c3.php has changed</warning> Do you want to replace c3.php with latest version?", false);
-            if (!$replace) {
-                return;
-            }
-        }
         $this->copyC3($event);
     }
 
+    public function askForUpdateV2(Event $event)
+    {
+        if ($this->c3NotChanged()) {
+            return;
+        }
+        $this->copyC3V2($event);
+    }
+
     private function c3NotChanged()
     {
         return file_exists(getcwd() . DIRECTORY_SEPARATOR . 'c3.php') &&
@@ -99,9 +130,19 @@ public function deleteC3(PackageEvent $event)
         if (!$this->isOperationOnC3($event)) {
             return;
         }
+        $this->deleteFile();
+    }
+
+    private function deleteFile() {
         if (file_exists(getcwd() . DIRECTORY_SEPARATOR . 'c3.php')) {
             $this->io->write("<comment>[codeception/c3]</comment> Deleting c3.php from the root of your project...");
             unlink(getcwd() . DIRECTORY_SEPARATOR . 'c3.php');
         }
     }
+
+    private static function composerV2()
+    {
+        return Comparator::greaterThanOrEqualTo(PluginInterface::PLUGIN_API_VERSION, '2.0.0');
+    }
+
 }

composer.json

@@ -20,7 +20,8 @@
     ],
     "require": {
         "php": ">=5.4.0",
-        "composer-plugin-api": "^1.0"
+        "composer-plugin-api": "^1.0 || ^2.0",
+        "composer/composer": "^1.0 || ^2.0"
     },
     "extra": {
         "class": "Codeception\\c3\\Installer"