Action Cable Connection TestCase¶ ↑

单元测试 Action Cable 连接。

这对于检查连接的 identified_by 是否正确分配以及任何不当的连接请求是否被拒绝非常有用。

基本示例¶ ↑

单元测试通过首先调用 connect 来模拟连接尝试，然后断言状态（例如，标识符）已被分配来编写。

class ApplicationCable::ConnectionTest < ActionCable::Connection::TestCase
  def test_connects_with_proper_cookie
    # Simulate the connection request with a cookie.
    cookies["user_id"] = users(:john).id

    connect

    # Assert the connection identifier matches the fixture.
    assert_equal users(:john).id, connection.user.id
  end

  def test_rejects_connection_without_proper_cookie
    assert_reject_connection { connect }
  end
end

connect 接受有关 HTTP 请求的附加信息，通过 params、headers、session 和 Rack env 选项。

def test_connect_with_headers_and_query_string
  connect params: { user_id: 1 }, headers: { "X-API-TOKEN" => "secret-my" }

  assert_equal "1", connection.user.id
  assert_equal "secret-my", connection.token
end

def test_connect_with_params
  connect params: { user_id: 1 }

  assert_equal "1", connection.user.id
end

您还可以在连接请求之前设置正确的 cookie

def test_connect_with_cookies
  # Plain cookies:
  cookies["user_id"] = 1

  # Or signed/encrypted:
  # cookies.signed["user_id"] = 1
  # cookies.encrypted["user_id"] = 1

  connect

  assert_equal "1", connection.user_id
end

Connection 会被自动推断¶ ↑

ActionCable::Connection::TestCase 会自动从测试类名中推断出正在测试的连接。如果无法从测试类名中推断出通道，则可以使用 tests 显式设置它。

class ConnectionTest < ActionCable::Connection::TestCase
  tests ApplicationCable::Connection
end