mirror of
https://github.com/danog/psalm-plugin-phpunit.git
synced 2024-12-02 09:27:56 +01:00
412 lines
17 KiB
PHP
412 lines
17 KiB
PHP
<?php declare(strict_types=1);
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namespace Psalm\PhpUnitPlugin\Hooks;
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use PHPUnit\Framework\TestCase;
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use PhpParser\Node\Stmt\ClassLike;
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use PhpParser\Node\Stmt\ClassMethod;
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use Psalm\Codebase;
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use Psalm\DocComment;
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use Psalm\FileSource;
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use Psalm\IssueBuffer;
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use Psalm\Issue;
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use Psalm\PhpUnitPlugin\Exception\UnsupportedPsalmVersion;
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use Psalm\Plugin\Hook\AfterClassLikeAnalysisInterface;
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use Psalm\Plugin\Hook\AfterClassLikeVisitInterface;
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use Psalm\StatementsSource;
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use Psalm\Storage\ClassLikeStorage;
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use Psalm\Storage\FunctionLikeParameter;
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use Psalm\Storage\MethodStorage;
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use Psalm\Type;
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use Psalm\Type\Atomic\TIterable;
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class TestCaseHandler implements AfterClassLikeVisitInterface, AfterClassLikeAnalysisInterface
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{
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/**
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* {@inheritDoc}
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*/
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public static function afterClassLikeVisit(
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ClassLike $classNode,
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ClassLikeStorage $classStorage,
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FileSource $statements_source,
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Codebase $codebase,
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array &$file_replacements = []
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) {
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if (!$codebase->classExtends($classStorage->name, TestCase::class)) {
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return;
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}
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if (self::hasInitializers($classStorage, $classNode)) {
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$classStorage->suppressed_issues[] = 'MissingConstructor';
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}
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}
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/**
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* {@inheritDoc}
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*/
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public static function afterStatementAnalysis(
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ClassLike $class_node,
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ClassLikeStorage $class_storage,
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StatementsSource $statements_source,
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Codebase $codebase,
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array &$file_replacements = []
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) {
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if (!$codebase->classExtends($class_storage->name, TestCase::class)) {
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return null;
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}
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// add a fake reference to test class to prevent it from being marked as unused
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// it would have been easier to add a suppression, but that's only possible
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// since 3.0.17 (vimeo/psalm#1353)
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//
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// This should always pass, we're calling it for the side-effect
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// of adding self-reference
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if (!$codebase->classOrInterfaceExists($class_storage->name, $class_storage->location)) {
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return null;
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}
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foreach ($class_storage->methods as $method_name => $method_storage) {
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if (!$method_storage->location) {
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continue;
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}
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$stmt_method = $class_node->getMethod($method_name);
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if (!$stmt_method) {
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throw new \RuntimeException('Failed to find ' . $method_name);
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}
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$specials = self::getSpecials($stmt_method);
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$method_id = $class_storage->name . '::' . $method_storage->cased_name;
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if (0 !== strpos($method_storage->cased_name, 'test')
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&& !isset($specials['test'])) {
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continue; // skip non-test methods
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}
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$method_storage->suppressed_issues[] = 'PossiblyUnusedMethod';
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if (!isset($specials['dataProvider'])) {
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continue;
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}
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foreach ($specials['dataProvider'] as $line => $provider) {
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$provider_method_id = $class_storage->name . '::' . (string) $provider;
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$provider_docblock_location = clone $method_storage->location;
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$provider_docblock_location->setCommentLine($line);
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// methodExists also can mark methods as used (weird, but handy)
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if (!$codebase->methodExists($provider_method_id, $provider_docblock_location, $method_id)) {
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IssueBuffer::accepts(new Issue\UndefinedMethod(
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'Provider method ' . $provider_method_id . ' is not defined',
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$provider_docblock_location,
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$provider_method_id
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));
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continue;
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}
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$provider_return_type = $codebase->getMethodReturnType($provider_method_id, $classStorage->name);
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assert(null !== $provider_return_type);
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$provider_return_type_string = $provider_return_type->getId();
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$provider_return_type_location = $codebase->getMethodReturnTypeLocation($provider_method_id);
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assert(null !== $provider_return_type_location);
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$expected_provider_return_type = new Type\Atomic\TIterable([
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Type::combineUnionTypes(Type::getInt(), Type::getString()),
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Type::getArray(),
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]);
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foreach ($provider_return_type->getTypes() as $type) {
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if (!$type->isIterable($codebase)) {
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IssueBuffer::accepts(new Issue\InvalidReturnType(
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'Providers must return ' . $expected_provider_return_type->getId()
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. ', ' . $provider_return_type_string . ' provided',
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$provider_return_type_location
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));
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continue;
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}
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}
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// unionize iterable so that instead of array<int,string>|Traversable<object|int>
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// we get iterable<int|object,string|int>
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//
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// TODO: this may get implemented in a future Psalm version, remove it then
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$provider_return_type = self::unionizeIterables($codebase, $provider_return_type);
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if (!self::isTypeContainedByType(
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$codebase,
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$provider_return_type->type_params[0],
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$expected_provider_return_type->type_params[0]
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) || !self::isTypeContainedByType(
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$codebase,
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$provider_return_type->type_params[1],
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$expected_provider_return_type->type_params[1]
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)) {
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if ($provider_return_type->type_params[0]->hasMixed()
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|| $provider_return_type->type_params[1]->hasMixed()) {
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IssueBuffer::accepts(new Issue\InvalidReturnType(
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'Providers must return ' . $expected_provider_return_type->getId()
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. ', possibly different ' . $provider_return_type_string . ' provided',
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$provider_return_type_location
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));
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} else {
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IssueBuffer::accepts(new Issue\InvalidReturnType(
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'Providers must return ' . $expected_provider_return_type->getId()
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. ', ' . $provider_return_type_string . ' provided',
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$provider_return_type_location
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));
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}
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continue;
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}
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$checkParam =
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/** @return void */
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function (
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Type\Union $potential_argument_type,
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FunctionLikeParameter $param,
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int $param_offset
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) use (
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$codebase,
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$method_id,
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$provider_method_id,
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$provider_return_type_string,
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$provider_docblock_location
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) {
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assert(null !== $param->type);
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$param_type = clone $param->type;
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if ($param->default_type) {
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$param_type->possibly_undefined = true;
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}
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if (self::isTypeContainedByType($codebase, $potential_argument_type, $param_type)) {
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// ok
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} elseif (self::canTypeBeContainedByType($codebase, $potential_argument_type, $param_type)) {
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IssueBuffer::accepts(new Issue\PossiblyInvalidArgument(
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'Argument ' . ($param_offset + 1) . ' of ' . $method_id
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. ' expects ' . $param_type->getId() . ', '
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. $potential_argument_type->getId() . ' provided'
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. ' by ' . $provider_method_id . '():(' . $provider_return_type_string . ')',
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$provider_docblock_location
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));
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} elseif ($potential_argument_type->possibly_undefined && !$param->default_type) {
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IssueBuffer::accepts(new Issue\InvalidArgument(
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'Argument ' . ($param_offset + 1) . ' of ' . $method_id
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. ' has no default value, but possibly undefined '
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. $potential_argument_type->getId() . ' provided'
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. ' by ' . $provider_method_id . '():(' . $provider_return_type_string . ')',
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$provider_docblock_location
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));
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} else {
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IssueBuffer::accepts(new Issue\InvalidArgument(
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'Argument ' . ($param_offset + 1) . ' of ' . $method_id
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. ' expects ' . $param_type->getId() . ', '
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. $potential_argument_type->getId() . ' provided'
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. ' by ' . $provider_method_id . '():(' . $provider_return_type_string . ')',
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$provider_docblock_location
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));
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}
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};
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/** @var Type\Atomic\TArray|Type\Atomic\ObjectLike $dataset_type */
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$dataset_type = $provider_return_type->type_params[1]->getTypes()['array'];
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if ($dataset_type instanceof Type\Atomic\TArray) {
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// check that all of the required (?) params accept value type
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$potential_argument_type = $dataset_type->type_params[1];
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foreach ($method_storage->params as $param_offset => $param) {
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$checkParam($potential_argument_type, $param, $param_offset);
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}
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} else {
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// iterate over all params checking if corresponding value type is acceptable
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// let's hope properties are sorted in array order
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$potential_argument_types = array_values($dataset_type->properties);
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if (count($potential_argument_types) < $method_storage->required_param_count) {
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IssueBuffer::accepts(new Issue\TooFewArguments(
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'Too few arguments for ' . $method_id
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. ' - expecting ' . $method_storage->required_param_count
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. ' but saw ' . count($potential_argument_types)
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. ' provided by ' . $provider_method_id . '()'
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. ':(' . $provider_return_type_string . ')',
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$provider_docblock_location,
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$method_id
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));
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}
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foreach ($method_storage->params as $param_offset => $param) {
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if (!isset($potential_argument_types[$param_offset])) {
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break;
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}
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$potential_argument_type = $potential_argument_types[$param_offset];
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$checkParam($potential_argument_type, $param, $param_offset);
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}
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}
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}
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}
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}
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private static function isTypeContainedByType(
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Codebase $codebase,
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Type\Union $input_type,
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Type\Union $container_type
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): bool {
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if (method_exists($codebase, 'isTypeContainedByType')) {
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return (bool) $codebase->isTypeContainedByType($input_type, $container_type);
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}
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/** @psalm-suppress RedundantCondition */
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if (class_exists(\Psalm\Internal\Analyzer\TypeAnalyzer::class, true)
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&& method_exists(\Psalm\Internal\Analyzer\TypeAnalyzer::class, 'isContainedBy')) {
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return \Psalm\Internal\Analyzer\TypeAnalyzer::isContainedBy($codebase, $input_type, $container_type);
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}
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throw new UnsupportedPsalmVersion();
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}
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private static function canTypeBeContainedByType(
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Codebase $codebase,
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Type\Union $input_type,
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Type\Union $container_type
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): bool {
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if (method_exists($codebase, 'canTypeBeContainedByType')) {
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return (bool) $codebase->canTypeBeContainedByType($input_type, $container_type);
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}
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/** @psalm-suppress RedundantCondition */
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if (class_exists(\Psalm\Internal\Analyzer\TypeAnalyzer::class, true)
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&& method_exists(\Psalm\Internal\Analyzer\TypeAnalyzer::class, 'canBeContainedBy')) {
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return \Psalm\Internal\Analyzer\TypeAnalyzer::canBeContainedBy($codebase, $input_type, $container_type);
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}
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throw new UnsupportedPsalmVersion();
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}
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/**
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* @param Type\Atomic\TNamedObject|Type\Atomic\TIterable $type
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* @return array{0:Type\Union,1:Type\Union}
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*/
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private static function getKeyValueParamsForTraversableObject(Codebase $codebase, $type): array
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{
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if (method_exists($codebase, 'getKeyValueParamsForTraversableObject')) {
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$ret = (array) $codebase->getKeyValueParamsForTraversableObject($type);
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assert($ret[0] instanceof Type\Union);
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assert($ret[1] instanceof Type\Union);
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return [$ret[0], $ret[1]];
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}
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/** @psalm-suppress RedundantCondition */
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if (class_exists(\Psalm\Internal\Analyzer\Statements\Block\ForeachAnalyzer::class, true)
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&& method_exists(
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\Psalm\Internal\Analyzer\Statements\Block\ForeachAnalyzer::class,
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'getKeyValueParamsForTraversableObject'
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)
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) {
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$iterable_key_type = null;
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$iterable_value_type = null;
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\Psalm\Internal\Analyzer\Statements\Block\ForeachAnalyzer::getKeyValueParamsForTraversableObject(
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$type,
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$codebase,
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$iterable_key_type,
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$iterable_value_type
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);
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return [
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$iterable_key_type ?? Type::getMixed(),
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$iterable_value_type ?? Type::getMixed(),
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];
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}
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throw new UnsupportedPsalmVersion();
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}
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private static function unionizeIterables(Codebase $codebase, Type\Union $iterables): Type\Atomic\TIterable
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{
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/** @var Type\Union[] $key_types */
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$key_types = [];
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/** @var Type\Union[] $value_types */
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$value_types = [];
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foreach ($iterables->getTypes() as $type) {
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if (!$type->isIterable($codebase)) {
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throw new \RuntimeException('should be iterable');
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}
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if ($type instanceof Type\Atomic\TArray) {
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$key_types[] = $type->type_params[0] ?? Type::getMixed();
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$value_types[] = $type->type_params[1] ?? Type::getMixed();
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} elseif ($type instanceof Type\Atomic\ObjectLike) {
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$key_types[] = $type->getGenericKeyType();
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$value_types[] = $type->getGenericValueType();
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} elseif ($type instanceof Type\Atomic\TNamedObject || $type instanceof Type\Atomic\TIterable) {
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list($key_types[], $value_types[]) = self::getKeyValueParamsForTraversableObject($codebase, $type);
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} else {
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throw new \RuntimeException('unexpected type');
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}
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}
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if (empty($key_types) || empty($value_types)) {
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return new Type\Atomic\TIterable([
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Type::getMixed(),
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Type::getMixed(),
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]);
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}
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$combine =
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/** @param null|Type\Union $a */
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function ($a, Type\Union $b) use ($codebase): Type\Union {
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return $a ? Type::combineUnionTypes($a, $b, $codebase) : $b;
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};
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return new Type\Atomic\TIterable([
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array_reduce($key_types, $combine),
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array_reduce($value_types, $combine),
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]);
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}
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private static function hasInitializers(ClassLikeStorage $storage, ClassLike $stmt): bool
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{
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if (isset($storage->methods['setup'])) {
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return true;
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}
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foreach ($storage->methods as $method => $_) {
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$stmt_method = $stmt->getMethod($method);
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if (!$stmt_method) {
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throw new \RuntimeException('Failed to find ' . $method);
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}
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if (self::isBeforeInitializer($stmt_method)) {
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return true;
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}
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}
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return false;
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}
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private static function isBeforeInitializer(ClassMethod $method): bool
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{
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$specials = self::getSpecials($method);
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return isset($specials['before']);
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}
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/** @return array<string, array<int,string>> */
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private static function getSpecials(ClassMethod $method): array
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{
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$docblock = $method->getDocComment();
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if ($docblock) {
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$parsed_comment = DocComment::parse((string)$docblock->getReformattedText(), $docblock->getLine());
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if (isset($parsed_comment['specials'])) {
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return $parsed_comment['specials'];
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}
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}
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return [];
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}
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}
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