ExampleMigration example

unset($_ENV[MigrationStep::INSTALL_ENVIRONMENT_VARIABLE]);
    }

    protected function tearDown(): void
    {
        unset($_SERVER[MigrationStep::INSTALL_ENVIRONMENT_VARIABLE]);
        unset($_ENV[MigrationStep::INSTALL_ENVIRONMENT_VARIABLE]);
    }

    public function testInstallEnvironmentNotSet(): void
    {
        $migration = new ExampleMigration();

        static::assertFalse($migration->isInstallation());
    }

    public function testInstallServerVariableSetTrue(): void
    {
        $_SERVER[MigrationStep::INSTALL_ENVIRONMENT_VARIABLE] = true;
        $migration = new ExampleMigration();

        static::assertTrue($migration->isInstallation());
    }