Run the whole MySQL server test suite in lexer tests

tests/mysql/WP_MySQL_Lexer_Tests.php

@@ -3,6 +3,28 @@
 use PHPUnit\Framework\TestCase;
 
 class WP_MySQL_Lexer_Tests extends TestCase {
+	/**
+	 * Tokenize the whole MySQL server test suite and make sure
+	 * it produces some tokens and doesn't throw any exceptions.
+	 */
+	public function test_tokenize_mysql_test_suite() {
+		$path   = __DIR__ . '/data/queries.csv';
+		$handle = @fopen( $path, 'r' );
+		if ( false === $handle ) {
+			$this->fail( "Failed to open file '$path'." );
+		}
+
+		try {
+			while ( ( $record = fgetcsv( $handle ) ) !== false ) {
+				$query  = $record[0];
+				$tokens = WP_MySQL_Lexer::tokenize( $query );
+				$this->assertNotEmpty( $tokens );
+			}
+		} finally {
+			fclose( $handle );
+		}
+	}
+
 	/**
 	 * Numbers vs. identifiers:
 	 *