Add tests addforeingkey validation (#23)

* Add testForengKeyException in CommandTest::class.

Author: terabytesoftw

tests/CommandTest.php

@@ -6,9 +6,13 @@
 
 use Yiisoft\Db\Exception\Exception;
 use Yiisoft\Db\Exception\InvalidConfigException;
+use Yiisoft\Db\Exception\IntegrityException;
 use Yiisoft\Db\Exception\NotSupportedException;
 use Yiisoft\Db\Tests\CommandTest as AbstractCommandTest;
 
+use function str_replace;
+use function version_compare;
+
 class CommandTest extends AbstractCommandTest
 {
     protected ?string $driverName = 'sqlite';
@@ -106,8 +110,75 @@ public function testMultiStatementSupport(): void
     public function batchInsertSqlProvider(): array
     {
         $parent = parent::batchInsertSqlProvider();
+
         unset($parent['wrongBehavior']); /** Produces SQL syntax error: General error: 1 near ".": syntax error */
 
         return $parent;
     }
+
+    public function testForeingKeyException(): void
+    {
+        $db = $this->getConnection(false);
+
+        $db->createCommand('PRAGMA foreign_keys = ON')->execute();
+
+        $tableMaster = 'departments';
+        $tableRelation = 'students';
+        $name = 'test_fk_constraint';
+
+        /** @var \Yiisoft\Db\Sqlite\Schema $schema */
+        $schema = $db->getSchema();
+
+        if ($schema->getTableSchema($tableRelation) !== null) {
+            $db->createCommand()->dropTable($tableRelation)->execute();
+        }
+
+        if ($schema->getTableSchema($tableMaster) !== null) {
+            $db->createCommand()->dropTable($tableMaster)->execute();
+        }
+
+        $db->createCommand()->createTable($tableMaster, [
+            'department_id' => 'integer not null primary key autoincrement',
+            'department_name' => 'nvarchar(50) null',
+        ])->execute();
+
+        $db->createCommand()->createTable($tableRelation, [
+            'student_id' => 'integer primary key autoincrement not null',
+            'student_name' => 'nvarchar(50) null',
+            'department_id' => 'integer not null',
+            'dateOfBirth' => 'date null'
+        ])->execute();
+
+        $db->createCommand()->addForeignKey(
+            $name,
+            $tableRelation,
+            ['Department_id'],
+            $tableMaster,
+            ['Department_id']
+        )->execute();
+
+        $db->createCommand(
+            "INSERT INTO departments VALUES (1, 'IT')"
+        )->execute();
+
+        $db->createCommand(
+            'INSERT INTO students(student_name, department_id) VALUES ("John", 1);'
+        )->execute();
+
+        $expectedMessageError = str_replace(
+            "\r\n",
+            "\n",
+            <<<EOD
+SQLSTATE[23000]: Integrity constraint violation: 19 FOREIGN KEY constraint failed
+The SQL being executed was: INSERT INTO students(student_name, department_id) VALUES ("Samdark", 5)
+EOD
+        );
+
+        $this->expectException(IntegrityException::class);
+        $this->expectExceptionMessage($expectedMessageError);
+
+        $db->createCommand(
+            'INSERT INTO students(student_name, department_id) VALUES ("Samdark", 5);'
+        )->execute();
+    }
 }