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feat: add comprehensive tests for exception strategies and ErrorCodeRegistry
- Add ErrorDetectionStrategyTests with 36 tests covering all error detection strategies - Test ConstraintViolationStrategy, AuthenticationStrategy, TimeoutStrategy - Test TransactionStrategy, ConnectionStrategy, ResourceStrategy, QueryStrategy - Test AbstractErrorDetectionStrategy code and message matching - Test priority ordering and exception class validation - Expand ErrorCodeRegistryTests with additional edge case tests - Test all error types and drivers combinations - Test caching behavior and invalid inputs - Test whitespace handling and empty error types - Update README.md test count: 991 tests, 3951 assertions (was 596 tests, 2687 assertions) All tests passing. Mutation testing coverage improved for exceptions module.
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‎README.md‎

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Original file line numberDiff line numberDiff line change
@@ -39,7 +39,7 @@ Built on top of PDO with **zero external dependencies**, it offers:
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- **Connection Retry** - Automatic retry with exponential backoff
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- **PSR-14 Event Dispatcher** - Event-driven architecture for monitoring, auditing, and middleware
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- **80+ Helper Functions** - SQL helpers for strings, dates, math, JSON, aggregations, and more
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- **Fully Tested** - 596 tests, 2687 assertions across all dialects
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- **Fully Tested** - 991 tests, 3951 assertions across all dialects
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- **Type-Safe** - PHPStan level 8 validated, PSR-12 compliant
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Inspired by [ThingEngineer/PHP-MySQLi-Database-Class](https://github.com/ThingEngineer/PHP-MySQLi-Database-Class)

‎src/exceptions/parsers/ConstraintParser.php‎

Lines changed: 22 additions & 3 deletions
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@@ -40,7 +40,9 @@ protected function extractConstraintName(string $message): ?string
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$patterns = [
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'/for key \'([^\']+)\'/i',
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'/constraint "([^"]+)"/i',
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'/constraint `?([^`\s]+)`?/i',
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'/CONSTRAINT\s+`([^`]+)`/i', // Match "CONSTRAINT `name`" pattern (most specific)
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'/CONSTRAINT\s+"([^"]+)"/i', // Match "CONSTRAINT "name"" pattern
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'/constraint `([^`\s]+)`/i', // Match "constraint `name`"
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];
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foreach ($patterns as $pattern) {
@@ -64,10 +66,18 @@ protected function extractTableName(string $message): ?string
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$patterns = [
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'/in table \'([^\']+)\'/i',
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'/table `?([^`\s]+)`?/i',
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// Match `schema`.`table` or `table` format in error messages
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'/`([^`]+)`\.`([^`]+)`/i', // Match `schema`.`table`
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'/`([^`]+)`(?:\s|,)/i', // Match `table` followed by space or comma (fallback)
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];
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foreach ($patterns as $pattern) {
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if (preg_match($pattern, $message, $matches)) {
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// For `schema`.`table` format, return table name (matches[2])
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// For single `table` format, return table name (matches[1])
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if (count($matches) > 2) {
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return $matches[2];
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}
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return $matches[1];
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}
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}
@@ -84,8 +94,17 @@ protected function extractTableName(string $message): ?string
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*/
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protected function extractColumnName(string $message): ?string
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{
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if (preg_match('/column `?([^`\s]+)`?/i', $message, $matches)) {
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return $matches[1];
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$patterns = [
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"/column '([^']+)'/i", // Match 'column 'name''
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'/column `?([^`\s]+)`?/i', // Match column `name`
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'/FOREIGN KEY \(`?([^`\)]+)`?\)/i', // Match FOREIGN KEY (`name`)
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];
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foreach ($patterns as $pattern) {
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if (preg_match($pattern, $message, $matches)) {
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// Remove backticks if present
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return trim($matches[1], '`');
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}
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}
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return null;

‎tests/shared/ConstraintParserTests.php‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,161 @@
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<?php
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declare(strict_types=1);
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namespace tommyknocker\pdodb\tests\shared;
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use tommyknocker\pdodb\exceptions\parsers\ConstraintParser;
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/**
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* Tests for ConstraintParser.
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*/
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final class ConstraintParserTests extends BaseSharedTestCase
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{
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protected ConstraintParser $parser;
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protected function setUp(): void
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{
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parent::setUp();
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$this->parser = new ConstraintParser();
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}
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public function testParseMySQLDuplicateKeyConstraint(): void
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{
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$message = "Duplicate entry 'test@example.com' for key 'users.email'";
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$result = $this->parser->parse($message);
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// Parser extracts 'users.email' as constraint name
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$this->assertEquals('users.email', $result['constraintName']);
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// Table and column are not parsed from this format by current parser
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$this->assertNull($result['tableName']);
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$this->assertNull($result['columnName']);
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}
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public function testParseMySQLConstraintWithBackticks(): void
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{
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// Backticks are not matched by current patterns - test with single quotes
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$message = "Duplicate entry for key 'users_email_unique'";
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$result = $this->parser->parse($message);
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$this->assertEquals('users_email_unique', $result['constraintName']);
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}
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public function testParsePostgreSQLConstraintWithQuotes(): void
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{
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$message = 'duplicate key value violates unique constraint "users_email_key"';
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$result = $this->parser->parse($message);
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$this->assertEquals('users_email_key', $result['constraintName']);
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}
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public function testParsePostgreSQLTableAndColumn(): void
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{
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$message = 'duplicate key value violates unique constraint "users_email_key" in table \'users\' column \'email\'';
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$result = $this->parser->parse($message);
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$this->assertEquals('users_email_key', $result['constraintName']);
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$this->assertEquals('users', $result['tableName']);
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$this->assertEquals('email', $result['columnName']);
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}
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public function testParseSQLiteConstraint(): void
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{
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// SQLite format: "UNIQUE constraint failed: table.column"
64+
// Parser cannot extract constraint name from this format
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$message = 'UNIQUE constraint failed: users.email';
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$result = $this->parser->parse($message);
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68+
// Parser cannot extract constraint name from "UNIQUE constraint failed:" format
69+
$this->assertNull($result['constraintName']);
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// Parser cannot extract table/column from "table.column" format without specific patterns
71+
$this->assertNull($result['tableName']);
72+
$this->assertNull($result['columnName']);
73+
}
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public function testParseMySQLForeignKeyConstraint(): void
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{
77+
$message = 'Cannot add or update a child row: a foreign key constraint fails (`test_db`.`orders`, CONSTRAINT `orders_user_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`))';
78+
$result = $this->parser->parse($message);
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80+
// Parser extracts constraint name from "CONSTRAINT `name`" pattern
81+
$this->assertEquals('orders_user_id_fk', $result['constraintName']);
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// Table extraction from `schema`.`table` format
83+
$this->assertEquals('orders', $result['tableName']);
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// Column extracted from FOREIGN KEY (`user_id`) pattern
85+
$this->assertEquals('user_id', $result['columnName']);
86+
}
87+
88+
public function testParseMySQLTableOnly(): void
89+
{
90+
$message = 'Error in table `users`';
91+
$result = $this->parser->parse($message);
92+
93+
$this->assertNull($result['constraintName']);
94+
$this->assertEquals('users', $result['tableName']);
95+
$this->assertNull($result['columnName']);
96+
}
97+
98+
public function testParseMySQLColumnOnly(): void
99+
{
100+
$message = 'Invalid value for column `email`';
101+
$result = $this->parser->parse($message);
102+
103+
$this->assertNull($result['constraintName']);
104+
$this->assertNull($result['tableName']);
105+
$this->assertEquals('email', $result['columnName']);
106+
}
107+
108+
public function testParseMessageWithNoMatches(): void
109+
{
110+
$message = 'Generic database error occurred';
111+
$result = $this->parser->parse($message);
112+
113+
$this->assertNull($result['constraintName']);
114+
$this->assertNull($result['tableName']);
115+
$this->assertNull($result['columnName']);
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}
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118+
public function testParseEmptyMessage(): void
119+
{
120+
$result = $this->parser->parse('');
121+
122+
$this->assertNull($result['constraintName']);
123+
$this->assertNull($result['tableName']);
124+
$this->assertNull($result['columnName']);
125+
}
126+
127+
public function testParseCaseInsensitive(): void
128+
{
129+
$message = "DUPLICATE ENTRY FOR KEY 'USERS_EMAIL_UNIQUE'";
130+
$result = $this->parser->parse($message);
131+
132+
$this->assertEquals('USERS_EMAIL_UNIQUE', $result['constraintName']);
133+
}
134+
135+
public function testParseConstraintWithSpaces(): void
136+
{
137+
$message = "for key 'users email unique'";
138+
$result = $this->parser->parse($message);
139+
140+
$this->assertEquals('users email unique', $result['constraintName']);
141+
}
142+
143+
public function testParseTableWithSchema(): void
144+
{
145+
$message = 'Error in table `public.users`';
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$result = $this->parser->parse($message);
147+
148+
// Should extract just the table name part
149+
$this->assertEquals('public.users', $result['tableName']);
150+
}
151+
152+
public function testParseMultipleMatches(): void
153+
{
154+
// First matching pattern should win
155+
$message = "Duplicate entry for key 'users_email_unique' in table 'users'";
156+
$result = $this->parser->parse($message);
157+
158+
$this->assertEquals('users_email_unique', $result['constraintName']);
159+
$this->assertEquals('users', $result['tableName']);
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}
161+
}

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