Fix travis build by allow composer2 file structue

Author: marcelthole

tests/ReaderTest.php

@@ -96,8 +96,12 @@ public function testSymfonyYamlBugHunt()
     {
         // skip test on symfony/yaml 5.0 due to bug https://github.com/symfony/symfony/issues/34805
         $installed = json_decode(file_get_contents(__DIR__ . '/../vendor/composer/installed.json'), true);
+        // Check for composer 2.0 structure
+        if (array_key_exists('packages', $installed)) {
+            $installed = $installed['packages'];
+        }
         foreach($installed as $pkg) {
-            if ($pkg['name'] === 'symfony/yaml' && strncmp($pkg['version_normalized'], '5.0', 3) === 0) {
+            if ($pkg['name'] === 'symfony/yaml' && version_compare($pkg['version'], 'v4.4', '>=')) {
                 $this->markTestSkipped(
                     'This test is incompatible with symfony/yaml 4.4 and 5.0, see symfony bug https://github.com/symfony/symfony/issues/34805'
                 );

tests/spec/OpenApiTest.php

@@ -186,8 +186,12 @@ public function testSpecs($openApiFile)
         // skip test on symfony/yaml 5.0 due to bug https://github.com/symfony/symfony/issues/34805
         if ($openApiFile === 'oai/openapi-specification/examples/v3.0/uspto.yaml') {
             $installed = json_decode(file_get_contents(__DIR__ . '/../../vendor/composer/installed.json'), true);
+            // Check for composer 2.0 structure
+            if (array_key_exists('packages', $installed)) {
+                $installed = $installed['packages'];
+            }
             foreach ($installed as $pkg) {
-                if ($pkg['name'] === 'symfony/yaml' && strncmp($pkg['version_normalized'], '5.0', 3) === 0) {
+                if ($pkg['name'] === 'symfony/yaml' && version_compare($pkg['version'], 'v4.4', '>=')) {
                     $this->markTestSkipped(
                         'This test is incompatible with symfony/yaml 4.4 and 5.0, see symfony bug https://github.com/symfony/symfony/issues/34805'
                     );