packages/sql-semantics/tests/Unit/Core/Binding/ExpressionRulesTest.php

1<?php
2
3declare(strict_types=1);
4
5namespace Tests\Unit\Core\Binding;
6
7use PHPUnit\Framework\Attributes\CoversClass;
8use PHPUnit\Framework\Attributes\Medium;
9use PHPUnit\Framework\Attributes\TestWith;
10use PHPUnit\Framework\TestCase;
11use SqlSemantics\Core\Binder;
12use SqlSemantics\Core\Dialect;
13use SqlSemantics\Core\SchemaBuilder;
14use SqlSemantics\Core\SemanticException;
15use SqlSemantics\Core\Type\Nullability;
16use SqlSemantics\Platform\MySql\Dialect as MySqlDialect;
17use SqlSemantics\Platform\PostgreSql\Dialect as PostgreSqlDialect;
18use SqlSemantics\Platform\Sqlite\Dialect as SqliteDialect;
19
20#[CoversClass(\SqlSemantics\Core\Binding\ExpressionRules::class)]
21#[CoversClass(\SqlSemantics\Core\Binding\ExpressionBinder::class)]
22#[CoversClass(\SqlSemantics\Core\Binding\FromBinder::class)]
23#[CoversClass(\SqlSemantics\Core\Binding\LiteralBinder::class)]
24#[CoversClass(\SqlSemantics\Core\Binding\NullFacts::class)]
25#[CoversClass(\SqlSemantics\Core\Binding\ProjectionBinder::class)]
26#[CoversClass(\SqlSemantics\Core\Binding\SelectBinder::class)]
27#[CoversClass(\SqlSemantics\Core\Binding\SyntaxGuard::class)]
28#[CoversClass(\SqlSemantics\Core\Binding\SelectModifiersBinder::class)]
29#[CoversClass(\SqlSemantics\Core\Binding\TypeResolution::class)]
30#[CoversClass(Binder::class)]
31#[CoversClass(SchemaBuilder::class)]
32#[CoversClass(\SqlSemantics\Core\Ast\DialectParser::class)]
33#[CoversClass(\SqlSemantics\Core\Ast\ColumnReader::class)]
34#[CoversClass(\SqlSemantics\Core\Ast\ConstraintReader::class)]
35#[CoversClass(\SqlSemantics\Core\Ast\Identifiers::class)]
36#[CoversClass(\SqlSemantics\Core\Ast\SchemaReader::class)]
37#[CoversClass(\SqlSemantics\Core\Ast\StatementList::class)]
38#[CoversClass(\SqlSemantics\Core\Ast\TokenGroups::class)]
39#[CoversClass(\SqlSemantics\Core\Ast\Tree::class)]
40#[CoversClass(\SqlSemantics\Core\Ast\TypeReader::class)]
41#[CoversClass(\SqlSemantics\Core\Binding\BoundRelation::class)]
42#[CoversClass(\SqlSemantics\Core\Binding\IdentitySequence::class)]
43#[CoversClass(\SqlSemantics\Core\Binding\Scope::class)]
44#[CoversClass(\SqlSemantics\Core\Binding\TableResolver::class)]
45#[CoversClass(\SqlSemantics\Core\Model\ColumnBinding::class)]
46#[CoversClass(\SqlSemantics\Core\Model\Expression::class)]
47#[CoversClass(\SqlSemantics\Core\Model\Join::class)]
48#[CoversClass(\SqlSemantics\Core\Model\Ordering::class)]
49#[CoversClass(\SqlSemantics\Core\Model\OutputColumn::class)]
50#[CoversClass(\SqlSemantics\Core\Model\BoundSelect::class)]
51#[CoversClass(\SqlSemantics\Core\Model\TableUse::class)]
52#[CoversClass(\SqlSemantics\Core\Schema::class)]
53#[CoversClass(\SqlSemantics\Core\Schema\ColumnDefinition::class)]
54#[CoversClass(\SqlSemantics\Core\Schema\TableConstraint::class)]
55#[CoversClass(\SqlSemantics\Core\Schema\TableDefinition::class)]
56#[CoversClass(SemanticException::class)]
57#[CoversClass(\SqlSemantics\Core\Type\TypeDescriptor::class)]
58#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Core\Policy\SyntaxRules::class)]
59#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Platform\PostgreSql\QueryRules::class)]
60#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Platform\PostgreSql\Platform::class)]
61#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Platform\PostgreSql\TypeRules::class)]
62#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Platform\PostgreSql\NameRules::class)]
63#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Platform\PostgreSql\SchemaRules::class)]
64#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Platform\Sqlite\QueryRules::class)]
65#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Platform\Sqlite\Platform::class)]
66#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Platform\Sqlite\TypeRules::class)]
67#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Platform\Sqlite\NameRules::class)]
68#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Platform\Sqlite\SchemaRules::class)]
69#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Platform\MySql\QueryRules::class)]
70#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Platform\MySql\Platform::class)]
71#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Platform\MySql\TypeRules::class)]
72#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Platform\MySql\NameRules::class)]
73#[\PHPUnit\Framework\Attributes\UsesClass(\SqlSemantics\Platform\MySql\SchemaRules::class)]
74#[Medium]
75final class ExpressionRulesTest extends TestCase
76{
77    #[TestWith([PostgreSqlDialect::PostgreSql])]
78    #[TestWith([MySqlDialect::MySql])]
79    #[TestWith([SqliteDialect::Sqlite])]
80    public function testOperatorNullTestsAreNeverNullable(Dialect $dialect): void
81    {
82        $schema = (new SchemaBuilder($dialect))->build('CREATE TABLE users (id INTEGER PRIMARY KEY, parent_id INTEGER, score INTEGER NOT NULL)');
83        $statement = (new Binder($schema))->bind('SELECT parent_id IS NULL AS absent, parent_id IS NOT NULL AS present FROM users');
84        self::assertSame(Nullability::NotNull, $statement->outputs[0]->expression->nullability);
85        self::assertSame(Nullability::NotNull, $statement->outputs[1]->expression->nullability);
86    }
87
88    #[TestWith([PostgreSqlDialect::PostgreSql])]
89    #[TestWith([MySqlDialect::MySql])]
90    #[TestWith([SqliteDialect::Sqlite])]
91    public function testCallNullIfCanIntroduceNullWithoutAnOuterJoin(Dialect $dialect): void
92    {
93        $schema = (new SchemaBuilder($dialect))->build('CREATE TABLE users (id INTEGER PRIMARY KEY, parent_id INTEGER, score INTEGER NOT NULL)');
94        $statement = (new Binder($schema))->bind('SELECT NULLIF(score, 0) AS result FROM users');
95        self::assertSame(Nullability::MaybeNull, $statement->outputs[0]->expression->nullability);
96        self::assertSame([], $statement->outputs[0]->expression->nullExtendedBy);
97    }
98
99    public function testPredicateRejectsNonBooleanPostgresInputs(): void
100    {
101        $schema = (new SchemaBuilder(PostgreSqlDialect::PostgreSql))->build('CREATE TABLE users (id INTEGER PRIMARY KEY, parent_id INTEGER, score INTEGER NOT NULL)');
102        $this->expectException(SemanticException::class);
103        $this->expectExceptionMessage('boolean type');
104        (new Binder($schema))->bind('SELECT id FROM users WHERE score');
105    }
106
107    public function testCoerceRecordsPostgresCommonTypeConversions(): void
108    {
109        $schema = (new SchemaBuilder(PostgreSqlDialect::PostgreSql))->build('CREATE TABLE users (id INTEGER PRIMARY KEY, parent_id INTEGER, score INTEGER NOT NULL)');
110        $statement = (new Binder($schema))->bind('SELECT COALESCE(id, 2147483648) FROM users');
111        $expression = $statement->outputs[0]->expression;
112        self::assertSame(\SqlSemantics\Core\Model\ExpressionKind::Cast, $expression->operands[0]->kind);
113        self::assertSame('bigint', $expression->operands[0]->type->name);
114        self::assertSame('integer', $expression->operands[0]->operands[0]->type->name);
115        self::assertSame('id', $expression->lineage()[0]->column->name);
116    }
117
118    public function testArithmeticHandlesNegativePostgresIntegerBoundaries(): void
119    {
120        $schema = (new SchemaBuilder(PostgreSqlDialect::PostgreSql))->build();
121        $statement = (new Binder($schema))->bind('SELECT -2147483648, -9223372036854775808');
122        self::assertSame('integer', $statement->outputs[0]->expression->type->name);
123        self::assertSame('bigint', $statement->outputs[1]->expression->type->name);
124    }
125}
126