test(Database): fix state leaks and random-order test determinism for MySQLi, PostgreSQL, and OCI8

.github/scripts/random-tests-config.txt

@@ -18,7 +18,7 @@ Config
 Cookie
 # DataCaster
 # DataConverter
-# Database
+Database
 # Debug
 Email
 # Encryption

.github/workflows/test-random-execution.yml

@@ -75,7 +75,10 @@ jobs:
           - Postgre
           - SQLSRV
           - SQLite3
-          - Oracle
+          # Oracle is excluded: OCI8 uses a single shared schema via DSN
+          # and cannot be isolated with per-component databases, causing
+          # ORA-00955 collisions when components run in parallel.
+          # - Oracle
 
     services:
       mysql:
@@ -177,7 +180,7 @@ jobs:
         uses: shivammathur/setup-php@f3e473d116dcccaddc5834248c87452386958240 # 2.37.2
         with:
           php-version: ${{ matrix.php-version }}
-          extensions: gd, curl, iconv, json, mbstring, openssl, sodium
+          extensions: gd, curl, iconv, json, mbstring, openssl, sodium, mysqli, oci8, pgsql, sqlsrv, sqlite3
           ini-values: opcache.enable_cli=0
           coverage: none
 

system/Database/OCI8/Connection.php

@@ -20,6 +20,8 @@
 use ErrorException;
 use stdClass;
 
+defined('OCI_COMMIT_ON_SUCCESS') || define('OCI_COMMIT_ON_SUCCESS', 32);
+
 /**
  * Connection for OCI8
  *
@@ -150,6 +152,17 @@ public function connect(bool $persistent = false)
             : $func($this->username, $this->password, $this->DSN, $this->charset);
     }
 
+    public function initialize()
+    {
+        parent::initialize();
+
+        if ($this->connID) {
+            $this->simpleQuery("ALTER SESSION SET NLS_DATE_FORMAT='YYYY-MM-DD HH24:MI:SS'");
+            $this->simpleQuery("ALTER SESSION SET NLS_TIMESTAMP_FORMAT='YYYY-MM-DD HH24:MI:SS'");
+            $this->simpleQuery("ALTER SESSION SET NLS_TIMESTAMP_TZ_FORMAT='YYYY-MM-DD HH24:MI:SS'");
+        }
+    }
+
     /**
      * Close the database connection.
      *
@@ -288,11 +301,11 @@ protected function _listTables(bool $prefixLimit = false, ?string $tableName = n
         $sql = 'SELECT "TABLE_NAME" FROM "USER_TABLES"';
 
         if ($tableName !== null) {
-            return $sql . ' WHERE "TABLE_NAME" LIKE ' . $this->escape($tableName);
+            return $sql . ' WHERE "TABLE_NAME" LIKE ' . $this->escape(strtoupper($tableName));
         }
 
         if ($prefixLimit && $this->DBPrefix !== '') {
-            return $sql . ' WHERE "TABLE_NAME" LIKE \'' . $this->escapeLikeString($this->DBPrefix) . "%' "
+            return $sql . ' WHERE "TABLE_NAME" LIKE \'' . $this->escapeLikeString(strtoupper($this->DBPrefix)) . "%' "
                     . sprintf($this->likeEscapeStr, $this->likeEscapeChar);
         }
 
@@ -397,7 +410,7 @@ protected function _indexData(string $table): array
         $sql = 'SELECT AIC.INDEX_NAME, UC.CONSTRAINT_TYPE, AIC.COLUMN_NAME '
             . ' FROM ALL_IND_COLUMNS AIC '
             . ' LEFT JOIN USER_CONSTRAINTS UC ON AIC.INDEX_NAME = UC.CONSTRAINT_NAME AND AIC.TABLE_NAME = UC.TABLE_NAME '
-            . 'WHERE AIC.TABLE_NAME = ' . $this->escape(strtolower($table)) . ' '
+            . 'WHERE AIC.TABLE_NAME = ' . $this->escape(strtoupper($table)) . ' '
             . 'AND AIC.TABLE_OWNER = ' . $this->escape(strtoupper($owner)) . ' '
             . ' ORDER BY UC.CONSTRAINT_TYPE, AIC.COLUMN_POSITION';
 
@@ -422,7 +435,7 @@ protected function _indexData(string $table): array
             $retVal[$row->INDEX_NAME]         = new stdClass();
             $retVal[$row->INDEX_NAME]->name   = $row->INDEX_NAME;
             $retVal[$row->INDEX_NAME]->fields = [$row->COLUMN_NAME];
-            $retVal[$row->INDEX_NAME]->type   = $constraintTypes[$row->CONSTRAINT_TYPE] ?? 'INDEX';
+            $retVal[$row->INDEX_NAME]->type   = $constraintTypes[$row->CONSTRAINT_TYPE ?? ''] ?? 'INDEX';
         }
 
         return $retVal;

system/Database/Postgre/Connection.php

@@ -22,6 +22,7 @@
 use PgSql\Result as PgSqlResult;
 use stdClass;
 use Stringable;
+use Throwable;
 
 /**
  * Connection for Postgre
@@ -149,15 +150,30 @@ private function convertDSN()
      */
     protected function _close()
     {
-        pg_close($this->connID);
+        if ($this->connID !== false) {
+            try {
+                pg_close($this->connID);
+            } catch (Throwable) {
+            } finally {
+                $this->connID = false;
+            }
+        }
     }
 
     /**
      * Ping the database connection.
      */
     protected function _ping(): bool
     {
-        return pg_ping($this->connID);
+        if ($this->connID === false) {
+            return false;
+        }
+
+        try {
+            return pg_ping($this->connID);
+        } catch (Throwable) {
+            return false;
+        }
     }
 
     /**

tests/_support/Config/Registrar.php

@@ -13,6 +13,10 @@
 
 namespace Tests\Support\Config;
 
+use mysqli;
+use PDO;
+use Throwable;
+
 /**
  * Class Registrar
  *
@@ -137,7 +141,68 @@ public static function Database(): array
         // so that we can test against multiple databases.
         $group = env('DB', 'SQLite3');
 
-        $config['tests'] = self::$dbConfig[$group] ?? [];
+        if ($group === 'Oracle') {
+            $group = 'OCI8';
+        }
+
+        $dbParams = self::$dbConfig[$group] ?? [];
+
+        if (! empty($dbParams) && ! in_array($group, ['SQLite3', 'OCI8'], true)) {
+            $componentName = '';
+
+            foreach ($_SERVER['argv'] ?? [] as $arg) {
+                if (str_contains($arg, 'tests/system/')) {
+                    $parts = explode('tests/system/', $arg);
+                    if (isset($parts[1])) {
+                        $componentName = explode('/', $parts[1])[0];
+                        break;
+                    }
+                }
+            }
+
+            if ($componentName !== '') {
+                $dbParams['database'] = 'test_' . strtolower($componentName);
+
+                try {
+                    if ($group === 'MySQLi') {
+                        $conn = new mysqli(
+                            $dbParams['hostname'],
+                            $dbParams['username'],
+                            $dbParams['password'],
+                            '',
+                            (int) $dbParams['port'],
+                        );
+                        if (! $conn->connect_error) {
+                            $conn->query('CREATE DATABASE IF NOT EXISTS ' . $conn->real_escape_string($dbParams['database']));
+                            $conn->close();
+                        }
+                    } elseif ($group === 'Postgre') {
+                        $dsn = 'pgsql:host=' . $dbParams['hostname'] . ';port=' . $dbParams['port'] . ';user=' . $dbParams['username'] . ';password=' . $dbParams['password'];
+                        $pdo = new PDO($dsn);
+                        $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+                        $stmt = $pdo->prepare('SELECT 1 FROM pg_database WHERE datname = ?');
+                        $stmt->execute([$dbParams['database']]);
+                        if (! $stmt->fetchColumn()) {
+                            $dbName = str_replace('"', '""', $dbParams['database']);
+                            $pdo->exec('CREATE DATABASE "' . $dbName . '"');
+                        }
+                    } elseif ($group === 'SQLSRV') {
+                        $dsn = 'sqlsrv:Server=' . $dbParams['hostname'] . ',' . $dbParams['port'] . ';Encrypt=False;TrustServerCertificate=True';
+                        $pdo = new PDO($dsn, $dbParams['username'], $dbParams['password']);
+                        $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+                        $stmt = $pdo->prepare('SELECT 1 FROM sys.databases WHERE name = ?');
+                        $stmt->execute([$dbParams['database']]);
+                        if (! $stmt->fetchColumn()) {
+                            $pdo->exec('CREATE DATABASE [' . str_replace(']', ']]', $dbParams['database']) . '] COLLATE Latin1_General_100_CS_AS_SC_UTF8');
+                        }
+                    }
+                } catch (Throwable) {
+                    // Ignore any error and let the connection fail naturally
+                }
+            }
+        }
+
+        $config['tests'] = $dbParams;
 
         return $config;
     }

tests/_support/Database/Migrations/20160428212500_Create_test_tables.php

@@ -14,6 +14,7 @@
 namespace Tests\Support\Database\Migrations;
 
 use CodeIgniter\Database\Migration;
+use Throwable;
 
 class Migration_Create_test_tables extends Migration
 {
@@ -183,6 +184,7 @@ public function down(): void
         $this->forge->dropTable('user', true);
         $this->forge->dropTable('job', true);
         $this->forge->dropTable('misc', true);
+        $this->forge->dropTable('team_members', true);
         $this->forge->dropTable('type_test', true);
         $this->forge->dropTable('empty', true);
         $this->forge->dropTable('secondary', true);
@@ -196,9 +198,25 @@ public function down(): void
         }
 
         if ($this->db->DBDriver === 'OCI8') {
-            $this->db->query('DROP PROCEDURE one');
-            $this->db->query('DROP PROCEDURE plus');
-            $this->db->query('DROP PACKAGE BODY calculator');
+            try {
+                $this->db->query('DROP PROCEDURE one');
+            } catch (Throwable) {
+            }
+
+            try {
+                $this->db->query('DROP PROCEDURE plus');
+            } catch (Throwable) {
+            }
+
+            try {
+                $this->db->query('DROP PACKAGE BODY calculator');
+            } catch (Throwable) {
+            }
+
+            try {
+                $this->db->query('DROP PACKAGE calculator');
+            } catch (Throwable) {
+            }
         }
     }
 }

tests/system/Database/Live/ConnectTest.php

@@ -46,19 +46,28 @@ protected function setUp(): void
         $this->group2['DBDriver'] = 'Postgre';
     }
 
+    protected function tearDown(): void
+    {
+        parent::tearDown();
+        $this->setPrivateProperty(Database::class, 'instances', []);
+    }
+
     public function testConnectWithMultipleCustomGroups(): void
     {
+        $this->group1['DBPrefix'] = uniqid('g1_', true);
+        $this->group2['DBPrefix'] = uniqid('g2_', true);
+
         // We should have our test database connection already.
-        $instances = $this->getPrivateProperty(Database::class, 'instances');
-        $this->assertCount(1, $instances);
+        $instances    = $this->getPrivateProperty(Database::class, 'instances');
+        $initialCount = count($instances);
 
         $db1 = Database::connect($this->group1);
         $db2 = Database::connect($this->group2);
 
         $this->assertNotSame($db1, $db2);
 
         $instances = $this->getPrivateProperty(Database::class, 'instances');
-        $this->assertCount(3, $instances);
+        $this->assertCount($initialCount + 2, $instances);
     }
 
     public function testConnectReturnsProvidedConnection(): void

tests/system/Database/Live/ExecuteLogMessageFormatTest.php

@@ -47,7 +47,7 @@ public function testLogMessageWhenExecuteFailsShowFullStructuredBacktrace(): voi
         $db->query($sql, [3, 'live', 'Rick']);
 
         $pattern = match ($db->DBDriver) {
-            'MySQLi'  => '/Table \'test\.some_table\' doesn\'t exist/',
+            'MySQLi'  => '/Table \'' . preg_quote($db->database, '/') . '\.some_table\' doesn\'t exist/',
             'Postgre' => '/pg_query\(\): Query failed: ERROR:  relation "some_table" does not exist/',
             'SQLite3' => '/Unable to prepare statement:\s(\d+,\s)?no such table: some_table/',
             'OCI8'    => '/oci_execute\(\): ORA-00942: table or view "ORACLE"\."SOME_TABLE" does not exist/',
@@ -60,11 +60,18 @@ public function testLogMessageWhenExecuteFailsShowFullStructuredBacktrace(): voi
 
         if ($db->DBDriver === 'Postgre') {
             $messageFromLogs = array_slice($messageFromLogs, 2);
-        } elseif ($db->DBDriver === 'OCI8') {
-            $messageFromLogs = array_slice($messageFromLogs, 1);
         }
 
-        $this->assertMatchesRegularExpression('/^in \S+ on line \d+\.$/', array_shift($messageFromLogs));
+        $inLine = null;
+
+        while (($line = array_shift($messageFromLogs)) !== null) {
+            if (preg_match('/^in \S+ on line \d+\.$/', $line)) {
+                $inLine = $line;
+                break;
+            }
+        }
+
+        $this->assertNotNull($inLine, 'Could not find "in ... on line ..." in log message');
 
         foreach ($messageFromLogs as $line) {
             $this->assertMatchesRegularExpression('/^\s*\d* .+(?:\(\d+\))?: \S+(?:(?:\->|::)\S+)?\(.*\)$/', $line);