PHPUnit 6.0 does not work with PHP 7.0.0-7.0.12

[nyoro712]

PHPUnit does not work since I updated it to 6.0 from 5.7.9.
The error message is as below:
On PHPUnit 6.0.3

PHP Fatal error: Cannot use SebastianBergmann\CodeCoverage\Exception as CodeCoverageException because the name is already in use in phar://D:/xampp/php/phpunit/phpunit/Framework/TestResult.php on line 24

On PHPUnit 6.0.0, 6.0.1, and 6.0.2 (Maybe this message is the same as #2460 )

PHP Fatal error: Cannot use PHPUnit\Framework\Exception as Exception because the name is already in use in phar://D:/xampp/php/phpunit/phpunit/Framework/Constraint/ExceptionMessageRegularExpression.php on line 12

I'm using PHPUnit with XAMPP on Windows 7 SP1 (64bit), and XAMPP is installed in D:\xampp.

I met the error in the following steps:

1. Access https://phar.phpunit.de/phpunit.phar by a web browser.
2. A file phpunit-6.0.3.phar is downloaded automatically.
3. Rename the file to phpunit.
4. Move the file to D:\xampp\php.
5. Run > phpunit --version on cmd.exe
6. Error

[sebastianbergmann]

I can reproduce this with PHP 7.0.7 on Windows 10:

C:\Users\Sebastian Bergmann\Desktop>php --version
PHP 7.0.7 (cli) (built: May 25 2016 13:08:31) ( NTS )
Copyright (c) 1997-2016 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2016 Zend Technologies

C:\Users\Sebastian Bergmann\Desktop>php phpunit-6.0.3.phar

Fatal error: Cannot use SebastianBergmann\CodeCoverage\Exception as CodeCoverageException because the name is already in use in phar://C:/Users/Sebastian Bergmann/Desktop/phpunit-6.0.3.phar/phpunit/Framework/TestResult.php on line 24

[sebastianbergmann]

I cannot reproduce this with PHP 7.1.1 on Windows 10:

C:\Users\Sebastian Bergmann\Desktop>php --version
PHP 7.1.1 (cli) (built: Jan 18 2017 18:38:28) ( NTS MSVC14 (Visual C++ 2015) x64 )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.1.0, Copyright (c) 1998-2017 Zend Technologies

C:\Users\Sebastian Bergmann\Desktop>php phpunit-6.0.3.phar
PHPUnit 6.0.3 by Sebastian Bergmann and contributors.

Usage: phpunit [options] UnitTest [UnitTest.php]
       phpunit [options] <directory>

Code Coverage Options:

  --coverage-clover <file>    Generate code coverage report in Clover XML format.
  --coverage-crap4j <file>    Generate code coverage report in Crap4J XML format.
  --coverage-html <dir>       Generate code coverage report in HTML format.
  --coverage-php <file>       Export PHP_CodeCoverage object to file.
  --coverage-text=<file>      Generate code coverage report in text format.
                              Default: Standard output.
  --coverage-xml <dir>        Generate code coverage report in PHPUnit XML format.
  --whitelist <dir>           Whitelist <dir> for code coverage analysis.
  --disable-coverage-ignore   Disable annotations for ignoring code coverage.

Logging Options:

  --log-junit <file>          Log test execution in JUnit XML format to file.
  --log-teamcity <file>       Log test execution in TeamCity format to file.
  --testdox-html <file>       Write agile documentation in HTML format to file.
  --testdox-text <file>       Write agile documentation in Text format to file.
  --testdox-xml <file>        Write agile documentation in XML format to file.
  --reverse-list              Print defects in reverse order

Test Selection Options:

  --filter <pattern>          Filter which tests to run.
  --testsuite <name,...>      Filter which testsuite to run.
  --group ...                 Only runs tests from the specified group(s).
  --exclude-group ...         Exclude tests from the specified group(s).
  --list-groups               List available test groups.
  --list-suites               List available test suites.
  --test-suffix ...           Only search for test in files with specified
                              suffix(es). Default: Test.php,.phpt

Test Execution Options:

  --dont-report-useless-tests Do not report tests that do not test anything.
  --strict-coverage           Be strict about @covers annotation usage.
  --strict-global-state       Be strict about changes to global state
  --disallow-test-output      Be strict about output during tests.
  --disallow-resource-usage   Be strict about resource usage during small tests.
  --enforce-time-limit        Enforce time limit based on test size.
  --disallow-todo-tests       Disallow @todo-annotated tests.

  --process-isolation         Run each test in a separate PHP process.
  --globals-backup            Backup and restore $GLOBALS for each test.
  --static-backup             Backup and restore static attributes for each test.

  --colors=<flag>             Use colors in output ("never", "auto" or "always").
  --columns <n>               Number of columns to use for progress output.
  --columns max               Use maximum number of columns for progress output.
  --stderr                    Write to STDERR instead of STDOUT.
  --stop-on-error             Stop execution upon first error.
  --stop-on-failure           Stop execution upon first error or failure.
  --stop-on-warning           Stop execution upon first warning.
  --stop-on-risky             Stop execution upon first risky test.
  --stop-on-skipped           Stop execution upon first skipped test.
  --stop-on-incomplete        Stop execution upon first incomplete test.
  --fail-on-warning           Treat tests with warnings as failures.
  --fail-on-risky             Treat risky tests as failures.
  -v|--verbose                Output more verbose information.
  --debug                     Display debugging information.

  --loader <loader>           TestSuiteLoader implementation to use.
  --repeat <times>            Runs the test(s) repeatedly.
  --teamcity                  Report test execution progress in TeamCity format.
  --testdox                   Report test execution progress in TestDox format.
  --testdox-group             Only include tests from the specified group(s).
  --testdox-exclude-group     Exclude tests from the specified group(s).
  --printer <printer>         TestListener implementation to use.

Configuration Options:

  --bootstrap <file>          A "bootstrap" PHP file that is run before the tests.
  -c|--configuration <file>   Read configuration from XML file.
  --no-configuration          Ignore default configuration file (phpunit.xml).
  --no-coverage               Ignore code coverage configuration.
  --no-extensions             Do not load PHPUnit extensions.
  --include-path <path(s)>    Prepend PHP's include_path with given path(s).
  -d key[=value]              Sets a php.ini value.
  --generate-configuration    Generate configuration file with suggested settings.

Miscellaneous Options:

  -h|--help                   Prints this usage information.
  --version                   Prints the version and exits.
  --atleast-version <min>     Checks that version is greater than min and exits.

  --check-version             Check whether PHPUnit is the latest version.

Looks like this is related to the PHP version rather than to the operating system.

[GrahamCampbell]

I cannot reproduce this with PHP 7.1.1 on Windows 10:

That's just pure luck on the non-deterministic order that files get required I think?

[sebastianbergmann]

The PHAR does not use autoloading.

[sebastianbergmann]

I can reproduce this with PHP 7.0.7 on Linux.

[sebastianbergmann]

Okay, it looks like this is a similar issue to the one fixed in 1044b8e. It will be fixed shortly.

It's interesting, though, that recent/current versions of PHP 7 do not seem to be affected by this. At least they do not error out on startup.

[GrahamCampbell]

👍

[sebastianbergmann]

As you can see in https://travis-ci.org/sebastianbergmann/phpunit/builds/198346201, the current state of the 6.0 branch does not work for PHP 7.0.0-7.0.12. Starting with PHP 7.0.13 "everything is fine". Looks to me that since version 7.0.13 is hiding the problem. I think this is a bug.

[sebastianbergmann]

@nikic just explained:

"As of 7.0.13 collisions are only checked within a single file, always. Previously that depended on symbol type, file order and whether or not you're using opcache. Basically it's fine to shadow a symbol in the namespace using an import, as long as it's not blatantly wrong (shadowing a symbol in the same file)."

[nikic]

Relevant bug on the PHP side: https://bugs.php.net/bug.php?id=66773