Sample
symfony/console 8.1.4: Prove that a Symfony Console negatable option is tri-state when omitted.
Verified sample for composer symfony/console 8.1.4: Prove that a Symfony Console negatable option is tri-state when omitted. The contract ran on php 8 …
sha256:2505ac6e31118f15e714b4d9f97594b98564f3c42851d7f55eda8243377c6b2c
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 1
Declared environment
php linux x64 php php composer
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| php 8 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · composer@1 |
2026-08-16 |
| php 8 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | SKIPPED | compile:SKIPPED · contract:SKIPPED · load:SKIPPED · resolve:FAIL CONTAINER_RUN · composer@1 |
2026-08-18 |
Case
HOW- Goal
- Prove that a Symfony Console negatable option is tri-state when omitted.
- Packages
- Symbols
-
- Symfony\Component\Console\Input\InputOption
- Environment
- php
- Created
- 2026-08-16T12:30:00Z
Contract
- Running a command with only `addOption('cache', null, InputOption::VALUE_NEGATABLE, ...)` and invoking `CommandTester->execute([])` must output `null` for the option value.
Files
- NOTES.md
- composer.json
- csx.json
- test/contract.php
Source
Used the cached community sample `case:sha256:4be549710837c4c9421ecf96e14bc793dbc64f21f822bc57cf6d35f5a430b15b` (VALUE_NEGATABLE tri-state behavior). A naive assumption that an omitted negatable option defaults to `false` fails loudly here because the contract asserts and observes `null`.
{
"require": {
"php": "^8.1",
"symfony/console": "8.1.4"
}
}
{"case":{"believed":"A caller expects a missing `InputOption::VALUE_NEGATABLE` to evaluate as `false`.","caseId":"case:sha256:937621697b33cae91071bee223fe244d240c857e9d4fc9d1ead35c210212f01a","contract":["Running a command with only `addOption('cache', null, InputOption::VALUE_NEGATABLE, ...)` and invoking `CommandTester-\u003eexecute([])` must output `null` for the option value."],"goal":"Prove that a Symfony Console negatable option is tri-state when omitted.","kind":"HOW","packages":["pkg:composer/symfony/console@8.1.4"],"schemaVersion":1,"symbols":["Symfony\\Component\\Console\\Input\\InputOption"]},"contractCommand":["php","test/contract.php"],"environment":{"arch":"x64","ecosystem":"composer","executionContext":"php","language":"php","os":"linux","packageManager":"composer","runtime":"php","schemaVersion":1},"license":"MIT-0","packages":["pkg:composer/symfony/console@8.1.4"],"schemaVersion":1,"symbols":["Symfony\\Component\\Console\\Input\\InputOption"],"verifierAdapter":"composer@1"}
<?php
require __DIR__ . '/../vendor/autoload.php';
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Tester\CommandTester;
$command = new Command('probe:negatable-default');
$command->addOption('cache', null, InputOption::VALUE_NEGATABLE, 'Control cache usage.');
$command->setCode(function (InputInterface $input, OutputInterface $output): int {
$value = $input->getOption('cache');
$output->write($value === null ? 'null' : ($value ? 'true' : 'false'));
return Command::SUCCESS;
});
$tester = new CommandTester($command);
$tester->execute([]);
$actual = trim($tester->getDisplay());
if ('null' !== $actual) {
throw new RuntimeException(sprintf('Expected VALUE_NEGATABLE default to be null, got: %s', json_encode($actual)));
}