Add exit code phpunit tests

phpunit/src/ExitCodeTest.php

@@ -0,0 +1,155 @@
+<?php
+
+namespace TypePhp\Tests;
+
+use PHPUnit\Framework\TestCase;
+
+/**
+ * Verifies the process exit code of AOT-compiled binaries.
+ *
+ * PHP CLI semantics require:
+ * - explicit exit(N)        -> process exits with N
+ * - uncaught exception      -> process exits with 255
+ * - fatal error             -> process exits with 255
+ * - normal completion       -> process exits with 0
+ */
+class ExitCodeTest extends TestCase
+{
+    private string $workDir;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+        $this->workDir = sys_get_temp_dir() . '/typephp-exitcode-' . bin2hex(random_bytes(6));
+        mkdir($this->workDir, 0777, true);
+    }
+
+    protected function tearDown(): void
+    {
+        $this->removeDirectory($this->workDir);
+        parent::tearDown();
+    }
+
+    public function testExplicitExitCodeIsPreserved(): void
+    {
+        $exitCode = $this->buildAndRun(<<<'PHP'
+<?php
+
+declare(strict_types=1);
+
+function main(): void
+{
+    exit(3);
+}
+PHP);
+
+        $this->assertSame(3, $exitCode);
+    }
+
+    public function testUncaughtExceptionExitsWith255(): void
+    {
+        $exitCode = $this->buildAndRun(<<<'PHP'
+<?php
+
+declare(strict_types=1);
+
+function main(): void
+{
+    throw new RuntimeException('intentional uncaught exception');
+}
+PHP);
+
+        $this->assertSame(255, $exitCode);
+    }
+
+    public function testFatalErrorExitsWith255(): void
+    {
+        $exitCode = $this->buildAndRun(<<<'PHP'
+<?php
+
+declare(strict_types=1);
+
+function main(): void
+{
+    trigger_error('intentional fatal error', E_USER_ERROR);
+}
+PHP);
+
+        $this->assertSame(255, $exitCode);
+    }
+
+    public function testNormalCompletionExitsWithZero(): void
+    {
+        $exitCode = $this->buildAndRun(<<<'PHP'
+<?php
+
+declare(strict_types=1);
+
+function main(): void
+{
+    echo "ok\n";
+}
+PHP);
+
+        $this->assertSame(0, $exitCode);
+    }
+
+    /**
+     * Compile a single-file bin project and return the exit code of the binary.
+     */
+    private function buildAndRun(string $source): int
+    {
+        $srcDir = $this->workDir . '/src';
+        $binDir = $this->workDir . '/bin';
+        $buildDir = $this->workDir . '/build';
+        mkdir($srcDir, 0777, true);
+        mkdir($binDir, 0777, true);
+
+        file_put_contents($srcDir . '/main.php', $source);
+        file_put_contents($srcDir . '/project.yml', sprintf(
+            "name: exit-code-test\n"
+            . "version: 0.1.0\n"
+            . "mode: bin\n"
+            . "output: %s/exit_code_test\n"
+            . "build-dir: %s\n"
+            . "optimize: 0\n"
+            . "no-progress: true\n"
+            . "\n"
+            . "sources:\n"
+            . "  - main.php\n",
+            $binDir,
+            $buildDir
+        ));
+
+        $tpc = dirname(__DIR__, 2) . '/bin/tpc.php';
+        $buildCommand = escapeshellarg(PHP_BINARY) . ' ' . escapeshellarg($tpc)
+            . ' ' . escapeshellarg($srcDir . '/project.yml') . ' -j 1';
+        exec($buildCommand . ' 2>&1', $buildOutput, $buildExitCode);
+        $this->assertSame(
+            0,
+            $buildExitCode,
+            'AOT compilation failed: ' . implode("\n", $buildOutput)
+        );
+
+        $binary = $binDir . '/exit_code_test';
+        exec(escapeshellarg($binary) . ' 2>&1', $runOutput, $exitCode);
+
+        return $exitCode;
+    }
+
+    private function removeDirectory(string $dir): void
+    {
+        if (!is_dir($dir)) {
+            return;
+        }
+        $items = scandir($dir);
+        foreach ($items ?: [] as $item) {
+            if ($item === '.' || $item === '..') {
+                continue;
+            }
+            $path = $dir . DIRECTORY_SEPARATOR . $item;
+            is_dir($path) ? $this->removeDirectory($path) : @unlink($path);
+        }
+        @rmdir($dir);
+    }
+}