from tests.backends.mysql import DBTestCase
from tests.models import Category


class TestDDL(DBTestCase):
    def test_create_table(self):
        ret = self.ddl.create_table(Category)
        self.assertEqual(
            ret,
            """CREATE TABLE IF NOT EXISTS `category` (
    `id` INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
    `slug` VARCHAR(200) NOT NULL,
    `name` VARCHAR(200) NOT NULL,
    `created_at` DATETIME(6) NOT NULL  DEFAULT CURRENT_TIMESTAMP(6),
    `user_id` INT NOT NULL COMMENT 'User',
    CONSTRAINT `fk_category_user_e2e3874c` FOREIGN KEY (`user_id`) REFERENCES `user` (`id`) ON DELETE CASCADE
) CHARACTER SET utf8mb4;""",
        )

    def test_drop_table(self):
        ret = self.ddl.drop_table(Category)
        self.assertEqual(ret, "DROP TABLE IF EXISTS category")

    def test_add_column(self):
        ret = self.ddl.add_column(Category, Category._meta.fields_map.get("name"))
        self.assertEqual(ret, "ALTER TABLE category ADD `name` VARCHAR(200) NOT NULL")

    def test_drop_column(self):
        ret = self.ddl.drop_column(Category, "name")
        self.assertEqual(ret, "ALTER TABLE category DROP COLUMN name")
        self.assertEqual(ret, "ALTER TABLE category DROP COLUMN name")

    def test_add_index(self):
        ret = self.ddl.add_index(Category, ["name"])
        self.assertEqual(ret, "ALTER TABLE category ADD  INDEX idx_category_name_8b0cb9 (`name`)")
        ret = self.ddl.add_index(Category, ["name"], True)
        self.assertEqual(
            ret, "ALTER TABLE category ADD UNIQUE INDEX uid_category_name_8b0cb9 (`name`)"
        )

    def test_drop_index(self):
        ret = self.ddl.drop_index(Category, ["name"])
        self.assertEqual(ret, "ALTER TABLE category DROP INDEX idx_category_name_8b0cb9")
        ret = self.ddl.drop_index(Category, ["name"], True)
        self.assertEqual(ret, "ALTER TABLE category DROP INDEX uid_category_name_8b0cb9")

    def test_add_fk(self):
        ret = self.ddl.add_fk(Category, Category._meta.fields_map.get("user"))
        self.assertEqual(
            ret,
            "ALTER TABLE category ADD CONSTRAINT `fk_category_user_e2e3874c` FOREIGN KEY (`user_id`) REFERENCES `user` (`id`) ON DELETE CASCADE",
        )

    def test_drop_fk(self):
        ret = self.ddl.drop_fk(Category, Category._meta.fields_map.get("user"))
        self.assertEqual(ret, "ALTER TABLE category DROP FOREIGN KEY fk_category_user_e2e3874c")