Fix test (remove it), and add other unit test on def show

test/controllers/api/v1/tasks_controller_test.rb

     headers: { Authorization: JsonWebToken.encode(user_id: @user.id) },
     as: :json
     assert_response :success
+
+    json_response = JSON.parse(self.response.body)
+    assert_equal @task.name, json_response['data']['attributes']['name']
+    assert_equal @task.user_id, json_response['data']['attributes']['user_id']
+    assert_equal @task.activity_id, json_response['data']['attributes']['activity_id']
   end
 
   test "should not access show" do
     assert_response :created
   end
 
-  test "should forbid create task - not logged in" do
+  test "should forbid create task" do
     assert_no_difference("Task.count") do
       post api_v1_activity_tasks_url(@activity),
       params: { task: { name: @task.name, description: @task.description, user_id: @user, activity_id: @activity } },
     end
     assert_response :forbidden
   end
-
-  test "should forbid create task - missing user or activity id" do
-    assert_no_difference("Task.count") do
-      post api_v1_activity_tasks_url(@activity),
-      params: { task: { name: @task.name, description: @task.description } },
-      headers: { Authorization: JsonWebToken.encode(user_id: @user.id) },
-      as: :json
-    end
-    assert_response :forbidden
-  end
 end