You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: tag_implication_controller_test.rb
    path of file: ./repos/moebooru/test/controllers
    
    the code of the file until where you have to start completion: require "test_helper"

class TagImplicationControllerTest < ActionController::TestCase
  fixtures :users

  def test_all
    post :create, params: { tag_implication: { predicate: "a", consequent: "b" } }, session: { user_id: 3 }
    t = TagImplication.find_by_p
    
  def test_all
    post :create, params: { tag_implication: { predicate: "a", consequent: "b" } }, session: { user_id: 3 }
    t = TagImplication.find_by_predicate_id(Tag.find_by_name("a").id)
    assert_not_nil(t)

    get :index
    assert_response :success

    # Can't easily test the update action. The daemon process does the actual work.
    # Anything we create inside this test is created within a transaction, so any database
    # connection outside of this one won't see any changes. We can disable transactional
    # fixtures but this interferes with other tests. Just assume the action works correctly
    # and test the logic of update in the unit tests.
  end
end