Add more tests.

tests/framework/db/mysql/type/JsonTest.php

@@ -0,0 +1,85 @@
+<?php
+/**
+ * @link https://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license https://www.yiiframework.com/license/
+ */
+
+namespace yiiunit\framework\db\mysql\type;
+
+use yii\db\JsonExpression;
+use yii\db\mysql\Schema;
+use yiiunit\framework\db\DatabaseTestCase;
+
+/**
+ * @group db
+ * @group mysql
+ */
+class JsonTest extends DatabaseTestCase
+{
+    protected $driverName = 'mysql';
+
+    public function testCreateTable(): void
+    {
+        $db = $this->getConnection();
+
+        if ($db->getSchema()->getTableSchema('json') !== null) {
+            $db->createCommand()->dropTable('json')->execute();
+        }
+
+        $command = $db->createCommand();
+        $command->createTable('json', ['id' => Schema::TYPE_PK, 'data' => Schema::TYPE_JSON])->execute();
+
+        $this->assertTrue($db->getTableSchema('json') !== null);
+        $this->assertSame('data', $db->getTableSchema('json')->getColumn('data')->name);
+        $this->assertSame('json', $db->getTableSchema('json')->getColumn('data')->type);
+    }
+
+    public function testInsertAndSelect(): void
+    {
+        $db = $this->getConnection(true);
+        $version = $db->getServerVersion();
+
+        $command = $db->createCommand();
+        $command->insert('storage', ['data' => ['a' => 1, 'b' => 2]])->execute();
+
+        if (\stripos($version, 'MariaDb') === false) {
+            $rowExpected = '{"a": 1, "b": 2}';
+        } else {
+            $rowExpected = '{"a":1,"b":2}';
+        }
+
+        $this->assertSame(
+            $rowExpected,
+            $command->setSql(
+                <<<SQL
+                SELECT `data` FROM `storage`
+                SQL,
+            )->queryScalar(),
+        );
+    }
+
+    public function testInsertJsonExpressionAndSelect(): void
+    {
+        $db = $this->getConnection(true);
+        $version = $db->getServerVersion();
+
+        $command = $db->createCommand();
+        $command->insert('storage', ['data' => new JsonExpression(['a' => 1, 'b' => 2])])->execute();
+
+        if (\stripos($version, 'MariaDb') === false) {
+            $rowExpected = '{"a": 1, "b": 2}';
+        } else {
+            $rowExpected = '{"a":1,"b":2}';
+        }
+
+        $this->assertSame(
+            $rowExpected,
+            $command->setSql(
+                <<<SQL
+                SELECT `data` FROM `storage`
+                SQL,
+            )->queryScalar(),
+        );
+    }
+}