assert binary exit code

Author: Nicolas Hart

tests/LoxTest.php

@@ -21,6 +21,8 @@ class LoxTest extends TestCase
 
     private ?string $expectedRuntimeError = null;
 
+    private int $expectedExitCode = 0;
+
     public const string FIXTURES_DIR = __DIR__ . '/lox';
 
     #[DataProvider('provideFiles')]
@@ -51,6 +53,7 @@ public function test_lox(\SplFileInfo $file): void
             $this->assertExpectedErrors($errorLines);
         }
 
+        $this->assertExitCode((int) $process->getExitCode());
         $this->assertExpectedOutputs($process->getOutput());
     }
 
@@ -95,6 +98,7 @@ private function collectExpectedErrors(string $line): void
 
         if (!empty($matches)) {
             $this->expectedErrors[] = sprintf('[%s] %s', $matches['line'], $matches['message']);
+            $this->expectedExitCode = 65;
         }
     }
 
@@ -105,6 +109,7 @@ private function collectExpectedRuntimeError(string $line, int $lineNum): void
 
         if (!empty($matches)) {
             $this->expectedRuntimeError = sprintf('%s [line %s]', $matches['message'], $lineNum);
+            $this->expectedExitCode = 70;
         }
     }
 
@@ -167,6 +172,11 @@ private function assertRuntimeError(array $errorLines): void
         $this->assertSame($this->expectedRuntimeError, reset($errorLines), sprintf('Expected runtime error "%s" and got: %s', $this->expectedRuntimeError, reset($errorLines)));
     }
 
+    private function assertExitCode(int $exitCode): void
+    {
+        $this->assertSame($this->expectedExitCode, $exitCode, sprintf('Expected return code %s and got %s', $this->expectedExitCode, $exitCode));
+    }
+
     /**
      * @return list<string>
      */