PatchCoverageCommand: use specific exit codes for errors and failures

Author: Slamdunk

src/cli/PatchCoverageCommand.php

@@ -23,7 +23,7 @@ public function run(Arguments $arguments): int
                 $arguments->coverage()
             );
 
-            return 1;
+            return 255;
         }
 
         if (!is_file($arguments->patch())) {
@@ -32,7 +32,7 @@ public function run(Arguments $arguments): int
                 $arguments->patch()
             );
 
-            return 1;
+            return 255;
         }
 
         $pathPrefix = $arguments->pathPrefix() ?: '';
@@ -53,7 +53,7 @@ public function run(Arguments $arguments): int
                 print 'Are you sure your --path-prefix is correct?' . PHP_EOL;
             }
 
-            return 1;
+            return 2;
         }
 
         printf(

tests/end-to-end/patch-coverage/invalid-first-argument.phpt

@@ -15,4 +15,4 @@ var_dump((new SebastianBergmann\PHPCOV\Application)->run($_SERVER['argv']));
 phpcov %s by Sebastian Bergmann.
 
 Code Coverage file "does-not-exist" does not exist
-int(1)
+int(255)

tests/end-to-end/patch-coverage/invalid-second-argument.phpt

@@ -15,4 +15,4 @@ var_dump((new SebastianBergmann\PHPCOV\Application)->run($_SERVER['argv']));
 phpcov %s by Sebastian Bergmann.
 
 Patch file "does-not-exist" does not exist
-int(1)
+int(255)

tests/end-to-end/patch-coverage/valid-arguments-with-invalid-path-prefix.phpt

@@ -18,4 +18,4 @@ phpcov %s by Sebastian Bergmann.
 
 Unable to detect executable lines that were changed.
 Are you sure your --path-prefix is correct?
-int(1)
+int(2)

tests/end-to-end/patch-coverage/valid-arguments-without-path-prefix.phpt

@@ -16,4 +16,4 @@ phpcov %s by Sebastian Bergmann.
 
 Unable to detect executable lines that were changed.
 Are you sure you do not need to use --path-prefix?
-int(1)
+int(2)