Fix show --platform regression failing if no composer.json exists, fixes

#11046
composer · Sep 13, 2022 · 4164b30 · 4164b30
1 parent 9bb436e
commit 4164b30
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Showing 2 changed files with 20 additions and 1 deletion.
diff --git a/src/Composer/Command/ShowCommand.php b/src/Composer/Command/ShowCommand.php
@@ -677,7 +677,12 @@ private function printPackages(IOInterface $io, array $packages, string $indent,
      */
     protected function getRootRequires(): array
     {
-        $rootPackage = $this->requireComposer()->getPackage();
+        $composer = $this->tryComposer();
+        if ($composer === null) {
+            return [];
+        }
+
+        $rootPackage = $composer->getPackage();
 
         return array_map(
             'strtolower',

diff --git a/tests/Composer/Test/Command/ShowCommandTest.php b/tests/Composer/Test/Command/ShowCommandTest.php
@@ -192,6 +192,20 @@ public function testShowPlatformOnlyShowsPlatformPackages(): void
         }
     }
 
+    public function testShowPlatformWorksWithoutComposerJson(): void
+    {
+        $this->initTempComposer([]);
+        unlink('./composer.json');
+        unlink('./auth.json');
+
+        $appTester = $this->getApplicationTester();
+        $appTester->run(['command' => 'show', '-p' => true]);
+        $output = trim($appTester->getDisplay(true));
+        foreach (Regex::matchAll('{^(\w+)}m', $output)->matches as $m) {
+            self::assertTrue(PlatformRepository::isPlatformPackage((string) $m[1]));
+        }
+    }
+
     public function testOutdatedWithZeroMajor(): void
     {
         $this->initTempComposer([