PHP report does not handle serialized code coverage data larger than 2 GB

[sakarikl]

Q	A
php-code-coverage version	9.2.22
PHP version	8.1.13
Driver	PCOV
PCOV version (if used)	1.0.11
Installation Method	Composer
Usage Method	PHPUnit
PHPUnit version (if used)	9.5.27

Generating code coverage report in PHP format ... PHP Fatal error: Field width 2251485604 is too long in /.../vendor/phpunit/php-code-coverage/src/Report/PHP.php on line 30
Fatal error: Field width 2251485604 is too long in /.../vendor/phpunit/php-code-coverage/src/Report/PHP.php on line 30

triggered with command:

php -dpcov.enabled=1 -dpcov.directory=${CI_PROJECT_DIR} -dmemory_limit=10G -dmax_execution_time=3600 ../vendor/bin/phpunit -c phpunit.coverage.xml --coverage-php=${CI_PROJECT_DIR}/reports/coverage-report.php --log-junit ../reports/func-junit.xml functional 

this is our codebase size:

phploc 7.0.2 by Sebastian Bergmann.

Directories                                       1873
Files                                             7505

Size
  Lines of Code (LOC)                          1108084
  Comment Lines of Code (CLOC)                  214571 (19.36%)
  Non-Comment Lines of Code (NCLOC)             893513 (80.64%)
  Logical Lines of Code (LLOC)                  273299 (24.66%)
    Classes                                     265136 (97.01%)

And size of tests:

phploc 7.0.2 by Sebastian Bergmann.

Directories                                       1048
Files                                             2345

Size
  Lines of Code (LOC)                           253418
  Comment Lines of Code (CLOC)                   16828 (6.64%)
  Non-Comment Lines of Code (NCLOC)             236590 (93.36%)
  Logical Lines of Code (LLOC)                   78561 (31.00%)
    Classes                                      78558 (100.00%)

[sebastianbergmann]

Does this help?

diff --git a/src/Report/PHP.php b/src/Report/PHP.php
index d16b1b8..d45136c 100644
--- a/src/Report/PHP.php
+++ b/src/Report/PHP.php
@@ -21,14 +21,8 @@ final class PHP
 {
     public function process(CodeCoverage $coverage, ?string $target = null): string
     {
-        $buffer = sprintf(
-            "<?php
-return \unserialize(<<<'END_OF_COVERAGE_SERIALIZATION'%s%s%sEND_OF_COVERAGE_SERIALIZATION%s);",
-            PHP_EOL,
-            serialize($coverage),
-            PHP_EOL,
-            PHP_EOL
-        );
+        $buffer = "<?php
+return \unserialize(<<<'END_OF_COVERAGE_SERIALIZATION'" . PHP_EOL . serialize($coverage) . PHP_EOL . "END_OF_COVERAGE_SERIALIZATION" . PHP_EOL . ");";
 
         if ($target !== null) {
             Filesystem::createDirectory(dirname($target));

[sakarikl]

With that patch the process was successful.

Generating code coverage report in PHP format ... done [00:07.920]

Thank you for your really quick response.

Would that $buffer variable still might cause the same problem in the future?

[sebastianbergmann]

Would that $buffer variable still might cause the same problem in the future?

It's not about the $buffer variable itself, but about the sprintf() function.