graphql-php/tests/Language/ParserTest.php
2018-10-05 10:47:57 +02:00

720 lines
24 KiB
PHP

<?php
declare(strict_types=1);
namespace GraphQL\Tests\Language;
use GraphQL\Error\InvariantViolation;
use GraphQL\Error\SyntaxError;
use GraphQL\Language\AST\ArgumentNode;
use GraphQL\Language\AST\FieldNode;
use GraphQL\Language\AST\NameNode;
use GraphQL\Language\AST\Node;
use GraphQL\Language\AST\NodeKind;
use GraphQL\Language\AST\NodeList;
use GraphQL\Language\AST\SelectionSetNode;
use GraphQL\Language\AST\StringValueNode;
use GraphQL\Language\Parser;
use GraphQL\Language\Source;
use GraphQL\Language\SourceLocation;
use GraphQL\Utils\Utils;
use PHPUnit\Framework\TestCase;
use stdClass;
use function file_get_contents;
use function sprintf;
class ParserTest extends TestCase
{
public function testAssertsThatASourceToParseIsNotNull() : void
{
$this->expectException(InvariantViolation::class);
$this->expectExceptionMessage('GraphQL query body is expected to be string, but got NULL');
Parser::parse(null);
}
public function testAssertsThatASourceToParseIsNotArray() : void
{
$this->expectException(InvariantViolation::class);
$this->expectExceptionMessage('GraphQL query body is expected to be string, but got array');
Parser::parse(['a' => 'b']);
}
public function testAssertsThatASourceToParseIsNotObject() : void
{
$this->expectException(InvariantViolation::class);
$this->expectExceptionMessage('GraphQL query body is expected to be string, but got stdClass');
Parser::parse(new stdClass());
}
public function parseProvidesUsefulErrors()
{
return [
[
'{',
'Syntax Error: Expected Name, found <EOF>',
"Syntax Error: Expected Name, found <EOF>\n\nGraphQL request (1:2)\n1: {\n ^\n",
[1],
[new SourceLocation(
1,
2
),
],
],
[
'{ ...MissingOn }
fragment MissingOn Type
', 'Syntax Error: Expected "on", found Name "Type"',
"Syntax Error: Expected \"on\", found Name \"Type\"\n\nGraphQL request (2:20)\n1: { ...MissingOn }\n2: fragment MissingOn Type\n ^\n3: \n",
],
['{ field: {} }', 'Syntax Error: Expected Name, found {', "Syntax Error: Expected Name, found {\n\nGraphQL request (1:10)\n1: { field: {} }\n ^\n"],
['notanoperation Foo { field }', 'Syntax Error: Unexpected Name "notanoperation"', "Syntax Error: Unexpected Name \"notanoperation\"\n\nGraphQL request (1:1)\n1: notanoperation Foo { field }\n ^\n"],
['...', 'Syntax Error: Unexpected ...', "Syntax Error: Unexpected ...\n\nGraphQL request (1:1)\n1: ...\n ^\n"],
];
}
/**
* @see it('parse provides useful errors')
*
* @dataProvider parseProvidesUsefulErrors
*/
public function testParseProvidesUsefulErrors(
$str,
$expectedMessage,
$stringRepresentation,
$expectedPositions = null,
$expectedLocations = null
) : void {
try {
Parser::parse($str);
$this->fail('Expected exception not thrown');
} catch (SyntaxError $e) {
self::assertEquals($expectedMessage, $e->getMessage());
self::assertEquals($stringRepresentation, (string) $e);
if ($expectedPositions) {
self::assertEquals($expectedPositions, $e->getPositions());
}
if ($expectedLocations) {
self::assertEquals($expectedLocations, $e->getLocations());
}
}
}
/**
* @see it('parse provides useful error when using source')
*/
public function testParseProvidesUsefulErrorWhenUsingSource() : void
{
try {
Parser::parse(new Source('query', 'MyQuery.graphql'));
$this->fail('Expected exception not thrown');
} catch (SyntaxError $error) {
self::assertEquals(
"Syntax Error: Expected {, found <EOF>\n\nMyQuery.graphql (1:6)\n1: query\n ^\n",
(string) $error
);
}
}
/**
* @see it('parses variable inline values')
*/
public function testParsesVariableInlineValues() : void
{
$this->expectNotToPerformAssertions();
// Following line should not throw:
Parser::parse('{ field(complex: { a: { b: [ $var ] } }) }');
}
/**
* @see it('parses constant default values')
*/
public function testParsesConstantDefaultValues() : void
{
$this->expectSyntaxError(
'query Foo($x: Complex = { a: { b: [ $var ] } }) { field }',
'Unexpected $',
$this->loc(1, 37)
);
}
private function expectSyntaxError($text, $message, $location)
{
$this->expectException(SyntaxError::class);
$this->expectExceptionMessage($message);
try {
Parser::parse($text);
} catch (SyntaxError $error) {
self::assertEquals([$location], $error->getLocations());
throw $error;
}
}
private function loc($line, $column)
{
return new SourceLocation($line, $column);
}
/**
* @see it('does not accept fragments spread of "on"')
*/
public function testDoesNotAcceptFragmentsNamedOn() : void
{
$this->expectSyntaxError(
'fragment on on on { on }',
'Unexpected Name "on"',
$this->loc(1, 10)
);
}
/**
* @see it('does not accept fragments spread of "on"')
*/
public function testDoesNotAcceptFragmentSpreadOfOn() : void
{
$this->expectSyntaxError(
'{ ...on }',
'Expected Name, found }',
$this->loc(1, 9)
);
}
/**
* @see it('parses multi-byte characters')
*/
public function testParsesMultiByteCharacters() : void
{
// Note: \u0A0A could be naively interpretted as two line-feed chars.
$char = Utils::chr(0x0A0A);
$query = <<<HEREDOC
# This comment has a $char multi-byte character.
{ field(arg: "Has a $char multi-byte character.") }
HEREDOC;
$result = Parser::parse($query, ['noLocation' => true]);
$expected = new SelectionSetNode([
'selections' => new NodeList([
new FieldNode([
'name' => new NameNode(['value' => 'field']),
'arguments' => new NodeList([
new ArgumentNode([
'name' => new NameNode(['value' => 'arg']),
'value' => new StringValueNode(
['value' => sprintf('Has a %s multi-byte character.', $char)]
),
]),
]),
'directives' => new NodeList([]),
]),
]),
]);
self::assertEquals($expected, $result->definitions[0]->selectionSet);
}
/**
* @see it('parses kitchen sink')
*/
public function testParsesKitchenSink() : void
{
// Following should not throw:
$kitchenSink = file_get_contents(__DIR__ . '/kitchen-sink.graphql');
$result = Parser::parse($kitchenSink);
self::assertNotEmpty($result);
}
/**
* allows non-keywords anywhere a Name is allowed
*/
public function testAllowsNonKeywordsAnywhereANameIsAllowed() : void
{
$nonKeywords = [
'on',
'fragment',
'query',
'mutation',
'subscription',
'true',
'false',
];
foreach ($nonKeywords as $keyword) {
$fragmentName = $keyword;
if ($keyword === 'on') {
$fragmentName = 'a';
}
// Expected not to throw:
$result = Parser::parse(<<<GRAPHQL
query $keyword {
... $fragmentName
... on $keyword { field }
}
fragment $fragmentName on Type {
$keyword($keyword: \$$keyword) @$keyword($keyword: $keyword)
}
fragment $fragmentName on Type {
$keyword($keyword: \$$keyword) @$keyword($keyword: $keyword)
}
GRAPHQL
);
self::assertNotEmpty($result);
}
}
/**
* @see it('parses anonymous mutation operations')
*/
public function testParsessAnonymousMutationOperations() : void
{
$this->expectNotToPerformAssertions();
// Should not throw:
Parser::parse('
mutation {
mutationField
}
');
}
/**
* @see it('parses anonymous subscription operations')
*/
public function testParsesAnonymousSubscriptionOperations() : void
{
$this->expectNotToPerformAssertions();
// Should not throw:
Parser::parse('
subscription {
subscriptionField
}
');
}
/**
* @see it('parses named mutation operations')
*/
public function testParsesNamedMutationOperations() : void
{
$this->expectNotToPerformAssertions();
// Should not throw:
Parser::parse('
mutation Foo {
mutationField
}
');
}
/**
* @see it('parses named subscription operations')
*/
public function testParsesNamedSubscriptionOperations() : void
{
$this->expectNotToPerformAssertions();
Parser::parse('
subscription Foo {
subscriptionField
}
');
}
/**
* @see it('creates ast')
*/
public function testParseCreatesAst() : void
{
$source = new Source('{
node(id: 4) {
id,
name
}
}
');
$result = Parser::parse($source);
$loc = static function ($start, $end) {
return [
'start' => $start,
'end' => $end,
];
};
$expected = [
'kind' => NodeKind::DOCUMENT,
'loc' => $loc(0, 41),
'definitions' => [
[
'kind' => NodeKind::OPERATION_DEFINITION,
'loc' => $loc(0, 40),
'operation' => 'query',
'name' => null,
'variableDefinitions' => [],
'directives' => [],
'selectionSet' => [
'kind' => NodeKind::SELECTION_SET,
'loc' => $loc(0, 40),
'selections' => [
[
'kind' => NodeKind::FIELD,
'loc' => $loc(4, 38),
'alias' => null,
'name' => [
'kind' => NodeKind::NAME,
'loc' => $loc(4, 8),
'value' => 'node',
],
'arguments' => [
[
'kind' => NodeKind::ARGUMENT,
'name' => [
'kind' => NodeKind::NAME,
'loc' => $loc(9, 11),
'value' => 'id',
],
'value' => [
'kind' => NodeKind::INT,
'loc' => $loc(13, 14),
'value' => '4',
],
'loc' => $loc(9, 14, $source),
],
],
'directives' => [],
'selectionSet' => [
'kind' => NodeKind::SELECTION_SET,
'loc' => $loc(16, 38),
'selections' => [
[
'kind' => NodeKind::FIELD,
'loc' => $loc(22, 24),
'alias' => null,
'name' => [
'kind' => NodeKind::NAME,
'loc' => $loc(22, 24),
'value' => 'id',
],
'arguments' => [],
'directives' => [],
'selectionSet' => null,
],
[
'kind' => NodeKind::FIELD,
'loc' => $loc(30, 34),
'alias' => null,
'name' => [
'kind' => NodeKind::NAME,
'loc' => $loc(30, 34),
'value' => 'name',
],
'arguments' => [],
'directives' => [],
'selectionSet' => null,
],
],
],
],
],
],
],
],
];
self::assertEquals($expected, self::nodeToArray($result));
}
/**
* @return mixed[]
*/
public static function nodeToArray(Node $node) : array
{
return TestUtils::nodeToArray($node);
}
/**
* @see it('creates ast from nameless query without variables')
*/
public function testParseCreatesAstFromNamelessQueryWithoutVariables() : void
{
$source = new Source('query {
node {
id
}
}
');
$result = Parser::parse($source);
$loc = static function ($start, $end) {
return [
'start' => $start,
'end' => $end,
];
};
$expected = [
'kind' => NodeKind::DOCUMENT,
'loc' => $loc(0, 30),
'definitions' => [
[
'kind' => NodeKind::OPERATION_DEFINITION,
'loc' => $loc(0, 29),
'operation' => 'query',
'name' => null,
'variableDefinitions' => [],
'directives' => [],
'selectionSet' => [
'kind' => NodeKind::SELECTION_SET,
'loc' => $loc(6, 29),
'selections' => [
[
'kind' => NodeKind::FIELD,
'loc' => $loc(10, 27),
'alias' => null,
'name' => [
'kind' => NodeKind::NAME,
'loc' => $loc(10, 14),
'value' => 'node',
],
'arguments' => [],
'directives' => [],
'selectionSet' => [
'kind' => NodeKind::SELECTION_SET,
'loc' => $loc(15, 27),
'selections' => [
[
'kind' => NodeKind::FIELD,
'loc' => $loc(21, 23),
'alias' => null,
'name' => [
'kind' => NodeKind::NAME,
'loc' => $loc(21, 23),
'value' => 'id',
],
'arguments' => [],
'directives' => [],
'selectionSet' => null,
],
],
],
],
],
],
],
],
];
self::assertEquals($expected, $this->nodeToArray($result));
}
/**
* @see it('allows parsing without source location information')
*/
public function testAllowsParsingWithoutSourceLocationInformation() : void
{
$source = new Source('{ id }');
$result = Parser::parse($source, ['noLocation' => true]);
self::assertEquals(null, $result->loc);
}
/**
* @see it('Experimental: allows parsing fragment defined variables')
*/
public function testExperimentalAllowsParsingFragmentDefinedVariables() : void
{
$source = new Source('fragment a($v: Boolean = false) on t { f(v: $v) }');
// not throw
Parser::parse($source, ['experimentalFragmentVariables' => true]);
$this->expectException(SyntaxError::class);
Parser::parse($source);
}
// Describe: parseValue
/**
* @see it('contains location information that only stringifys start/end')
*/
public function testContainsLocationInformationThatOnlyStringifysStartEnd() : void
{
$source = new Source('{ id }');
$result = Parser::parse($source);
self::assertEquals(['start' => 0, 'end' => '6'], TestUtils::locationToArray($result->loc));
}
/**
* @see it('contains references to source')
*/
public function testContainsReferencesToSource() : void
{
$source = new Source('{ id }');
$result = Parser::parse($source);
self::assertEquals($source, $result->loc->source);
}
// Describe: parseType
/**
* @see it('contains references to start and end tokens')
*/
public function testContainsReferencesToStartAndEndTokens() : void
{
$source = new Source('{ id }');
$result = Parser::parse($source);
self::assertEquals('<SOF>', $result->loc->startToken->kind);
self::assertEquals('<EOF>', $result->loc->endToken->kind);
}
/**
* @see it('parses null value')
*/
public function testParsesNullValues() : void
{
self::assertEquals(
[
'kind' => NodeKind::NULL,
'loc' => ['start' => 0, 'end' => 4],
],
$this->nodeToArray(Parser::parseValue('null'))
);
}
/**
* @see it('parses list values')
*/
public function testParsesListValues() : void
{
self::assertEquals(
[
'kind' => NodeKind::LST,
'loc' => ['start' => 0, 'end' => 11],
'values' => [
[
'kind' => NodeKind::INT,
'loc' => ['start' => 1, 'end' => 4],
'value' => '123',
],
[
'kind' => NodeKind::STRING,
'loc' => ['start' => 5, 'end' => 10],
'value' => 'abc',
'block' => false,
],
],
],
$this->nodeToArray(Parser::parseValue('[123 "abc"]'))
);
}
/**
* @see it('parses well known types')
*/
public function testParsesWellKnownTypes() : void
{
self::assertEquals(
[
'kind' => NodeKind::NAMED_TYPE,
'loc' => ['start' => 0, 'end' => 6],
'name' => [
'kind' => NodeKind::NAME,
'loc' => ['start' => 0, 'end' => 6],
'value' => 'String',
],
],
$this->nodeToArray(Parser::parseType('String'))
);
}
/**
* @see it('parses custom types')
*/
public function testParsesCustomTypes() : void
{
self::assertEquals(
[
'kind' => NodeKind::NAMED_TYPE,
'loc' => ['start' => 0, 'end' => 6],
'name' => [
'kind' => NodeKind::NAME,
'loc' => ['start' => 0, 'end' => 6],
'value' => 'MyType',
],
],
$this->nodeToArray(Parser::parseType('MyType'))
);
}
/**
* @see it('parses list types')
*/
public function testParsesListTypes() : void
{
self::assertEquals(
[
'kind' => NodeKind::LIST_TYPE,
'loc' => ['start' => 0, 'end' => 8],
'type' => [
'kind' => NodeKind::NAMED_TYPE,
'loc' => ['start' => 1, 'end' => 7],
'name' => [
'kind' => NodeKind::NAME,
'loc' => ['start' => 1, 'end' => 7],
'value' => 'MyType',
],
],
],
$this->nodeToArray(Parser::parseType('[MyType]'))
);
}
/**
* @see it('parses non-null types')
*/
public function testParsesNonNullTypes() : void
{
self::assertEquals(
[
'kind' => NodeKind::NON_NULL_TYPE,
'loc' => ['start' => 0, 'end' => 7],
'type' => [
'kind' => NodeKind::NAMED_TYPE,
'loc' => ['start' => 0, 'end' => 6],
'name' => [
'kind' => NodeKind::NAME,
'loc' => ['start' => 0, 'end' => 6],
'value' => 'MyType',
],
],
],
$this->nodeToArray(Parser::parseType('MyType!'))
);
}
/**
* @see it('parses nested types')
*/
public function testParsesNestedTypes() : void
{
self::assertEquals(
[
'kind' => NodeKind::LIST_TYPE,
'loc' => ['start' => 0, 'end' => 9],
'type' => [
'kind' => NodeKind::NON_NULL_TYPE,
'loc' => ['start' => 1, 'end' => 8],
'type' => [
'kind' => NodeKind::NAMED_TYPE,
'loc' => ['start' => 1, 'end' => 7],
'name' => [
'kind' => NodeKind::NAME,
'loc' => ['start' => 1, 'end' => 7],
'value' => 'MyType',
],
],
],
],
$this->nodeToArray(Parser::parseType('[MyType!]'))
);
}
}