fix tests issues

app/Config/Database.php

@@ -16,6 +16,10 @@ class Database extends Config
     {
         parent::__construct();
 
+        if (ENVIRONMENT === 'testing') {
+            $this->defaultGroup = 'tests';
+        }
+
         $this->default = [
             'DSN'      => '',
             'hostname' => env('database.default.hostname'),
@@ -38,22 +42,22 @@ class Database extends Config
 
         $this->tests = [
             'DSN'      => '',
-            'hostname' => env('database.tests.hostname', env('database.default.hostname')),
-            'username' => env('database.tests.username', env('database.default.username')),
-            'password' => env('database.tests.password', env('database.default.password')),
-            'database' => env('database.tests.database', env('database.default.database')),
+            'hostname' => env('TEST_DB_HOST', env('database.tests.hostname', env('database.default.hostname'))),
+            'username' => env('TEST_DB_USER', env('database.tests.username', env('database.default.username'))),
+            'password' => env('TEST_DB_PASSWORD', env('database.tests.password', env('database.default.password'))),
+            'database' => env('TEST_DB_NAME', env('database.tests.database', env('database.default.database'))),
             'DBDriver' => env('database.tests.DBDriver', env('database.default.DBDriver', 'MySQLi')),
-            'DBPrefix' => env('database.tests.DBPrefix', 'db_'),
+            'DBPrefix' => env('database.tests.DBPrefix', ''),
             'pConnect' => false,
             'DBDebug'  => true,
-            'charset'  => 'utf8',
-            'DBCollat' => 'utf8_general_ci',
+            'charset'  => 'utf8mb4',
+            'DBCollat' => 'utf8mb4_general_ci',
             'swapPre'  => '',
             'encrypt'  => false,
             'compress' => false,
             'strictOn' => false,
             'failover' => [],
-            'port'     => (int) env('database.tests.port', env('database.default.port', 3306)),
+            'port'     => (int) env('TEST_DB_PORT', env('database.tests.port', env('database.default.port', 3306))),
         ];
     }
 }

app/Database/Migrations/2026-01-05-215851_FixPrintRequestsForeignKey.php

@@ -11,6 +11,10 @@ class FixPrintRequestsForeignKey extends Migration
         // Drop the old foreign key if it exists
         $this->forge->dropForeignKey('print_requests', 'print_requests_class_id_foreign');
 
+        if (! $this->db->tableExists('class_sections')) {
+            return;
+        }
+
         // Add the new foreign key
         $this->forge->addForeignKey('class_id', 'class_sections', 'id', 'CASCADE', 'CASCADE');
         

app/Database/Migrations/2026-01-06-195508_RevertPrintRequestsForeignKey.php

@@ -9,7 +9,14 @@ class RevertPrintRequestsForeignKey extends Migration
     public function up()
     {
         // Drop the old foreign key if it exists
-        $this->forge->dropForeignKey('print_requests', 'print_requests_class_id_foreign');
+        $db = \Config\Database::connect();
+        $keys = $db->getForeignKeyData('print_requests');
+        foreach ($keys as $key) {
+            if ($key->constraint_name === 'print_requests_class_id_foreign') {
+                $this->forge->dropForeignKey('print_requests', 'print_requests_class_id_foreign');
+                break;
+            }
+        }
 
         // Add the new foreign key
         $this->forge->addForeignKey('class_id', 'classes', 'id', 'CASCADE', 'CASCADE');

app/Database/Migrations/2026-01-06-205621_FixPrintRequestsForeignKeyAgain.php

@@ -12,8 +12,7 @@ class FixPrintRequestsForeignKeyAgain extends Migration
         $keys = $db->getForeignKeyData('print_requests');
         foreach ($keys as $key) {
             if ($key->constraint_name === 'print_requests_class_id_foreign') {
-                $this->forge->dropForeignKey('print_requests', 'print_requests_class_id_foreign');
-                break;
+                return;
             }
         }
 

app/Database/Migrations/2026-01-25-000000_RemoveClassAssignmentSemester.php

@@ -8,10 +8,18 @@ class RemoveClassAssignmentSemester extends Migration
 {
     public function up()
     {
-        if ($this->db->tableExists('teacher_class')) {
+        if ($this->db->tableExists('teacher_class') && $this->db->fieldExists('semester', 'teacher_class')) {
+            if ($this->indexExists('teacher_class', 'unique_teacher_assignment')) {
+                $this->db->query('ALTER TABLE `teacher_class` DROP INDEX `unique_teacher_assignment`');
+            }
+
             $this->forge->dropColumn('teacher_class', 'semester');
+
+            $this->db->query(
+                'ALTER TABLE `teacher_class` ADD UNIQUE KEY `unique_teacher_assignment` (`teacher_id`, `class_section_id`, `school_year`)'
+            );
         }
-        if ($this->db->tableExists('student_class')) {
+        if ($this->db->tableExists('student_class') && $this->db->fieldExists('semester', 'student_class')) {
             $this->forge->dropColumn('student_class', 'semester');
         }
     }
@@ -39,4 +47,13 @@ class RemoveClassAssignmentSemester extends Migration
             ]);
         }
     }
+
+    private function indexExists(string $table, string $index): bool
+    {
+        $result = $this->db->query(
+            'SHOW INDEX FROM `' . str_replace('`', '``', $table) . '` WHERE Key_name = ' . $this->db->escape($index)
+        );
+
+        return $result->getNumRows() > 0;
+    }
 }

app/Database/Migrations/2026-01-26-000100_CreateTeacherSubmissionNotificationHistory.php

@@ -3,6 +3,7 @@
 namespace App\Database\Migrations;
 
 use CodeIgniter\Database\Migration;
+use CodeIgniter\Database\RawSql;
 
 class CreateTeacherSubmissionNotificationHistory extends Migration
 {
@@ -56,7 +57,7 @@ class CreateTeacherSubmissionNotificationHistory extends Migration
             'sent_at' => [
                 'type' => 'DATETIME',
                 'null' => false,
-                'default' => 'CURRENT_TIMESTAMP',
+                'default' => new RawSql('CURRENT_TIMESTAMP'),
             ],
         ]);
 

app/Database/Migrations/2026-01-27-130500_CreateExamDraftSubmissions.php

@@ -3,6 +3,7 @@
 namespace App\Database\Migrations;
 
 use CodeIgniter\Database\Migration;
+use CodeIgniter\Database\RawSql;
 
 class CreateExamDraftSubmissions extends Migration
 {
@@ -89,7 +90,7 @@ class CreateExamDraftSubmissions extends Migration
             'created_at' => [
                 'type'     => 'DATETIME',
                 'null'     => false,
-                'default'  => 'CURRENT_TIMESTAMP',
+                'default'  => new RawSql('CURRENT_TIMESTAMP'),
             ],
             'updated_at' => [
                 'type' => 'DATETIME',

app/Database/Migrations/2026-02-04-000400_CreatePlacementLevels.php

@@ -24,7 +24,7 @@ class CreatePlacementLevels extends Migration
         ]);
 
         $this->forge->addKey('id', true);
-        $this->forge->addKey(['student_id', 'school_year'], true);
+        $this->forge->addUniqueKey(['student_id', 'school_year'], 'unique_student_school_year');
         $this->forge->addKey('school_year');
         $this->forge->createTable('placement_levels');
     }

app/Database/Migrations/2026-02-04-000430_CreatePlacementScores.php

@@ -24,7 +24,7 @@ class CreatePlacementScores extends Migration
         ]);
 
         $this->forge->addKey('id', true);
-        $this->forge->addKey(['batch_id', 'student_id'], true);
+        $this->forge->addUniqueKey(['batch_id', 'student_id'], 'unique_batch_student');
         $this->forge->addKey('batch_id');
         $this->forge->createTable('placement_scores');
     }

app/Database/Migrations/2026-02-05-000200_CreateMissingScoreOverrides.php

@@ -65,7 +65,10 @@ class CreateMissingScoreOverrides extends Migration
 
         $this->forge->addKey('id', true);
         $this->forge->addKey(['class_section_id', 'semester', 'school_year', 'item_type'], false, 'missing_score_overrides_scope');
-        $this->forge->addKey(['student_id', 'class_section_id', 'semester', 'school_year', 'item_type', 'item_index'], true, 'missing_score_overrides_unique');
+        $this->forge->addUniqueKey(
+            ['student_id', 'class_section_id', 'semester', 'school_year', 'item_type', 'item_index'],
+            'missing_score_overrides_unique'
+        );
         $this->forge->createTable('missing_score_overrides', true);
     }
 

app/Database/Migrations/2026-02-10-000100_AddStyleToPreferences.php

@@ -10,13 +10,18 @@ class AddStyleToPreferences extends Migration
     {
         if ($this->db->tableExists('user_preferences')) {
             if (! $this->db->fieldExists('style_color', 'user_preferences')) {
+                $styleColor = [
+                    'type'       => 'VARCHAR',
+                    'constraint' => 32,
+                    'null'       => true,
+                ];
+
+                if ($this->db->fieldExists('timezone', 'user_preferences')) {
+                    $styleColor['after'] = 'timezone';
+                }
+
                 $this->forge->addColumn('user_preferences', [
-                    'style_color' => [
-                        'type'       => 'VARCHAR',
-                        'constraint' => 32,
-                        'null'       => true,
-                        'after'      => 'timezone',
-                    ],
+                    'style_color' => $styleColor,
                 ]);
             }
             if (! $this->db->fieldExists('menu_color', 'user_preferences')) {

app/Database/Migrations/2026-07-12-040600_FixSchoolYearColumns.php

@@ -122,6 +122,8 @@ class FixSchoolYearColumns extends Migration
             );
         }
 
+        $this->db->resetDataCache();
+
         // These annual entities lacked a school_year column in the audited schema.
         foreach (['class_progress_reports', 'exams', 'print_requests'] as $table) {
             if ($this->db->tableExists($table) && ! $this->db->fieldExists('school_year', $table)) {
@@ -137,6 +139,8 @@ class FixSchoolYearColumns extends Migration
             }
         }
 
+        $this->db->resetDataCache();
+
         // Validate and normalize every direct owner to VARCHAR(9).
         foreach ($this->yearOwnerTables as $table) {
             if (! $this->db->tableExists($table) || ! $this->db->fieldExists('school_year', $table)) {
@@ -163,6 +167,8 @@ class FixSchoolYearColumns extends Migration
             }
         }
 
+        $this->db->resetDataCache();
+
         // Remove redundant columns. Dependent non-primary indexes are removed first.
         foreach ($this->tablesWithoutDirectYear as $table) {
             if (! $this->db->tableExists($table) || ! $this->db->fieldExists('school_year', $table)) {
@@ -172,6 +178,7 @@ class FixSchoolYearColumns extends Migration
             $this->dropIndexesContainingColumn($table, 'school_year');
             $this->dropChecksContainingColumn($table, 'school_year');
             $this->forge->dropColumn($table, 'school_year');
+            $this->db->resetDataCache();
         }
 
         foreach ($this->tablesWithoutDirectSemester as $table) {
@@ -182,8 +189,11 @@ class FixSchoolYearColumns extends Migration
             $this->dropIndexesContainingColumn($table, 'semester');
             $this->dropChecksContainingColumn($table, 'semester');
             $this->forge->dropColumn($table, 'semester');
+            $this->db->resetDataCache();
         }
 
+        $this->db->resetDataCache();
+
         foreach ($this->yearOwnerTables as $table) {
             if (! $this->db->tableExists($table) || ! $this->db->fieldExists('school_year', $table)) {
                 continue;