示例
symfony/console v8.1.4: Normalize default answers and validate responses consistently across interactive and non-interactive QuestionHelper execution
已验证示例 — composer symfony/console v8.1.4: Normalize default answers and validate responses consistently across interactive and non-interactive QuestionHelper…
sha256:98593c84d6a1d030ce58808015e6b1d236cb9e48d43aac49bc03c125bab0c57b
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提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。
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执行证据
声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。
- 证据依据
- 签名契约通过
- 验证回执
- 2
- 构建过它的签名密钥
- 2
声明的环境
php linux x64 php php composer
验证运行环境
| 环境 | 契约 | 阶段 | 运行日期 |
|---|---|---|---|
| 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 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · composer@1 |
2026-08-18 |
案例
HOW- 目标
- Normalize default answers and validate responses consistently across interactive and non-interactive QuestionHelper execution
- 符号
-
- Symfony\Component\Console\Helper\QuestionHelper
- Symfony\Component\Console\Helper\QuestionHelper::ask
- Symfony\Component\Console\Question\Question
- Symfony\Component\Console\Question\Question::setNormalizer
- Symfony\Component\Console\Question\Question::setValidator
- 环境
- php
- 创建时间
- 2026-08-16T14:41:09Z
契约
- QuestionHelper::ask() in non-interactive mode completely bypasses Question::setNormalizer(), returning the unnormalized default value and passing the unnormalized type directly to the validator.
- In interactive mode accepting the default value executes Question::setNormalizer() before passing the result to Question::setValidator()
- Non-interactive QuestionHelper execution passes the raw unnormalized default to validators, throwing when validators enforce types produced by normalizers
- Questions without validators return the normalized string in interactive mode but return the raw unnormalized string in non-interactive mode
文件
- NOTES.md
- composer.json
- composer.lock
- csx.json
- test/contract.php
源代码
# Notes
## Network Search Result
A previous sample was found in the network for `symfony/console`: `sha256:89afc201c4bfa004148a13da413c0cb0fe77d5d9ca4e6b45a5bec301d7080e69` (Goal: Accurately calculate Table column widths and wrapping when combining TableCell colspan with per-column setColumnMaxWidth constraints). This sample covers a completely different feature interaction between `Question::setNormalizer()`, `Question::setValidator()`, and non-interactive execution in `QuestionHelper`.
## What a Model Would Have Written Instead
A model assumes that configuring `Question::setNormalizer()` normalizes the question's default value consistently whenever the default is used, both when accepting the default in interactive mode (pressing Enter) and when running non-interactively (`--no-interaction` or `$input->setInteractive(false)`).
## How the Wrong Version Fails
Code relying on normalizers fails loudly with a `RuntimeException` or `TypeError` in non-interactive CI environments when validators expect normalized types (such as integers or parsed arrays), or fails silently with a green build returning raw untrimmed/unnormalized string values to downstream business logic.
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"source": "https://github.com/symfony/service-contracts/tree/v3.7.1"
},
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"url": "https://symfony.com/sponsor",
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{
"url": "https://github.com/fabpot",
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"files": [
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],
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},
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"/Tests/"
]
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],
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"name": "Nicolas Grekas",
"email": "p@tchwork.com"
},
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{"case":{"believed":"QuestionHelper applies configured Question normalizers to default values in non-interactive execution before validating and returning the response.","caseId":"case:sha256:c01cf599507af5f6610a41d1106ce46ac642ce8f7e97350b51ac0d80e4970cad","contract":["QuestionHelper::ask() in non-interactive mode completely bypasses Question::setNormalizer(), returning the unnormalized default value and passing the unnormalized type directly to the validator.","In interactive mode accepting the default value executes Question::setNormalizer() before passing the result to Question::setValidator()","Non-interactive QuestionHelper execution passes the raw unnormalized default to validators, throwing when validators enforce types produced by normalizers","Questions without validators return the normalized string in interactive mode but return the raw unnormalized string in non-interactive mode"],"goal":"Normalize default answers and validate responses consistently across interactive and non-interactive QuestionHelper execution","kind":"HOW","packages":["pkg:composer/symfony/console@v8.1.4"],"schemaVersion":1,"symbols":["Symfony\\Component\\Console\\Helper\\QuestionHelper","Symfony\\Component\\Console\\Helper\\QuestionHelper::ask","Symfony\\Component\\Console\\Question\\Question","Symfony\\Component\\Console\\Question\\Question::setNormalizer","Symfony\\Component\\Console\\Question\\Question::setValidator"]},"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@v8.1.4"],"schemaVersion":1,"symbols":["Symfony\\Component\\Console\\Helper\\QuestionHelper","Symfony\\Component\\Console\\Helper\\QuestionHelper::ask","Symfony\\Component\\Console\\Question\\Question","Symfony\\Component\\Console\\Question\\Question::setNormalizer","Symfony\\Component\\Console\\Question\\Question::setValidator"],"verifierAdapter":"composer@1"}
<?php
declare(strict_types=1);
require_once __DIR__ . '/../vendor/autoload.php';
use Symfony\Component\Console\Helper\QuestionHelper;
use Symfony\Component\Console\Question\Question;
use Symfony\Component\Console\Input\ArrayInput;
use Symfony\Component\Console\Output\BufferedOutput;
function assertTrue(bool $condition, string $message): void {
if (!$condition) {
throw new \RuntimeException("Assertion failed: $message");
}
}
function assertSame(mixed $expected, mixed $actual, string $message): void {
if ($expected !== $actual) {
throw new \RuntimeException(
"Assertion failed: $message\nExpected:\n" . var_export($expected, true) . "\nActual:\n" . var_export($actual, true)
);
}
}
echo "Running symfony/console contract assertions...\n";
$helper = new QuestionHelper();
$output = new BufferedOutput();
// Contract 1: QuestionHelper::ask() in non-interactive mode completely bypasses Question::setNormalizer(),
// returning the unnormalized default value and passing the unnormalized type directly to the validator.
{
$createPortQuestion = function(): Question {
$q = new Question('Server port [8080]: ', '8080');
$q->setNormalizer(fn($v) => (int) $v);
$q->setValidator(function ($v) {
if (!is_int($v)) {
throw new \RuntimeException('Validator expected integer from normalizer, got ' . gettype($v));
}
return $v;
});
return $q;
};
// Interactive mode accepting default (pressing Enter)
$stream = fopen('php://memory', 'r+', false);
fwrite($stream, "\n");
rewind($stream);
$interactiveInput = new ArrayInput([]);
$interactiveInput->setStream($stream);
$interactiveInput->setInteractive(true);
$interactiveResult = $helper->ask($interactiveInput, $output, $createPortQuestion());
assertSame(8080, $interactiveResult, 'Interactive default must be normalized to integer');
// Non-interactive mode
$nonInteractiveInput = new ArrayInput([]);
$nonInteractiveInput->setInteractive(false);
$caughtException = null;
try {
$helper->ask($nonInteractiveInput, $output, $createPortQuestion());
} catch (\RuntimeException $e) {
$caughtException = $e;
}
assertTrue(
$caughtException !== null,
'Non-interactive mode must throw because QuestionHelper bypasses normalizer and passes string to validator'
);
assertSame(
'Validator expected integer from normalizer, got string',
$caughtException->getMessage(),
'Exception message must confirm unnormalized string was passed to validator'
);
}
// Contract 2: In interactive mode accepting the default value executes Question::setNormalizer()
// before passing the result to Question::setValidator(), whereas without a validator non-interactive returns raw unnormalized default.
{
$q = new Question('Environment [prod]: ', ' prod ');
$q->setNormalizer(fn($v) => strtoupper(trim((string) $v)));
// Interactive mode with empty input (Enter)
$stream = fopen('php://memory', 'r+', false);
fwrite($stream, "\n");
rewind($stream);
$interactiveInput = new ArrayInput([]);
$interactiveInput->setStream($stream);
$interactiveInput->setInteractive(true);
$interactiveResult = $helper->ask($interactiveInput, $output, $q);
assertSame('PROD', $interactiveResult, 'Interactive fallback must trim and uppercase the default string');
// Non-interactive mode returns raw untrimmed lowercase default
$nonInteractiveInput = new ArrayInput([]);
$nonInteractiveInput->setInteractive(false);
$nonInteractiveResult = $helper->ask($nonInteractiveInput, $output, $q);
assertSame(' prod ', $nonInteractiveResult, 'Non-interactive mode must return raw unnormalized default string');
}
// Contract 3: Complex normalizer (e.g. comma-separated string to array) is bypassed in non-interactive mode.
{
$q = new Question('Allowed roles [admin,user]: ', 'admin,user');
$q->setNormalizer(fn($v) => is_array($v) ? $v : array_map('trim', explode(',', (string) $v)));
$q->setValidator(function ($v) {
if (!is_array($v)) {
throw new \InvalidArgumentException('Expected array of roles');
}
return $v;
});
// Interactive mode
$stream = fopen('php://memory', 'r+', false);
fwrite($stream, "\n");
rewind($stream);
$interactiveInput = new ArrayInput([]);
$interactiveInput->setStream($stream);
$interactiveInput->setInteractive(true);
$interactiveResult = $helper->ask($interactiveInput, $output, $q);
assertSame(['admin', 'user'], $interactiveResult, 'Interactive mode must return parsed array');
// Non-interactive mode
$nonInteractiveInput = new ArrayInput([]);
$nonInteractiveInput->setInteractive(false);
$caught = false;
try {
$helper->ask($nonInteractiveInput, $output, $q);
} catch (\InvalidArgumentException $e) {
$caught = true;
}
assertTrue($caught, 'Non-interactive mode must throw InvalidArgumentException due to unparsed string default');
}
// Contract 4: Explicit user input in interactive mode is correctly transformed by normalizer before validator.
{
$q = new Question('Confirm [y/n]: ', 'n');
$q->setNormalizer(fn($v) => strtolower(trim((string) $v)) === 'y');
$q->setValidator(function ($v) {
if (!is_bool($v)) {
throw new \RuntimeException('Validator expected boolean');
}
return $v;
});
$stream = fopen('php://memory', 'r+', false);
fwrite($stream, " Y \n");
rewind($stream);
$input = new ArrayInput([]);
$input->setStream($stream);
$input->setInteractive(true);
$result = $helper->ask($input, $output, $q);
assertSame(true, $result, 'Interactive user input must be normalized to boolean true');
}
echo "All symfony/console contract assertions passed successfully.\n";