Add user to testrun

* We want to identify a user that has triggered a testrun. Previously (in regular operation), only submission author who were regular users were able to start a testrun. Now, we want to prepare a future where submission authors are programming groups. Still, a testrun is triggered by an individual user and not a group.
* Further, this commit fixes some missing foreign key constrains.

app/controllers/exercises_controller.rb

@@ -525,7 +525,7 @@ class ExercisesController < ApplicationController
 
   def submit
     @submission = Submission.create(submission_params)
-    @submission.calculate_score
+    @submission.calculate_score(current_user)
 
     if @submission.users.map {|user| lti_outcome_service?(@submission.exercise, user, @submission.study_group_id) }.any?
       transmit_lti_score

app/controllers/remote_evaluation_controller.rb

@@ -66,7 +66,7 @@ class RemoteEvaluationController < ApplicationController
     validation_token = remote_evaluation_params[:validation_token]
     if (remote_evaluation_mapping = RemoteEvaluationMapping.find_by(validation_token:))
       @submission = Submission.create(build_submission_params(cause, remote_evaluation_mapping))
-      @submission.calculate_score
+      @submission.calculate_score(remote_evaluation_mapping.user)
     else
       # TODO: better output
       # TODO: check token expired?

app/controllers/request_for_comments_controller.rb

@@ -157,7 +157,7 @@ class RequestForCommentsController < ApplicationController
         # execute the tests here and wait until they finished.
         # As the same runner is used for the score and test run, no parallelization is possible
         # A run is triggered from the frontend and does not need to be handled here.
-        @request_for_comment.submission.calculate_score
+        @request_for_comment.submission.calculate_score(current_user)
         format.json { render :show, status: :created, location: @request_for_comment }
       else
         format.html { render :new }

app/controllers/submissions_controller.rb

@@ -249,7 +249,7 @@ class SubmissionsController < ApplicationController
     return true if disable_scoring
 
     # The score is stored separately, we can forward it to the client immediately
-    client_socket&.send_data(JSON.dump(@submission.calculate_score))
+    client_socket&.send_data(JSON.dump(@submission.calculate_score(current_user)))
     # To enable hints when scoring a submission, uncomment the next line:
     # send_hints(client_socket, StructuredError.where(submission: @submission))
   rescue Runner::Error => e
@@ -284,7 +284,7 @@ class SubmissionsController < ApplicationController
     return true if @embed_options[:disable_run]
 
     # The score is stored separately, we can forward it to the client immediately
-    client_socket&.send_data(JSON.dump(@submission.test(@file)))
+    client_socket&.send_data(JSON.dump(@submission.test(@file, current_user)))
   rescue Runner::Error => e
     extract_durations(e)
     send_and_store client_socket, {cmd: :status, status: :container_depleted}
@@ -396,6 +396,7 @@ class SubmissionsController < ApplicationController
       passed: @testrun[:passed],
       cause:,
       submission: @submission,
+      user: current_user,
       exit_code: @testrun[:exit_code], # might be nil, e.g., when the run did not finish
       status: @testrun[:status] || :failed,
       output: @testrun[:output].presence, # TODO: Remove duplicated saving of the output after creating TestrunMessages

app/models/programming_group.rb

@@ -6,6 +6,7 @@ class ProgrammingGroup < ApplicationRecord
   has_many :programming_group_memberships, dependent: :destroy
   has_many :external_users, through: :programming_group_memberships, source_type: 'ExternalUser', source: :user
   has_many :internal_users, through: :programming_group_memberships, source_type: 'InternalUser', source: :user
+  has_many :testruns, through: :submissions
   belongs_to :exercise
 
   validate :group_size

app/models/submission.rb

@@ -141,7 +141,7 @@ class Submission < ApplicationRecord
 
   # @raise [Runner::Error] if the score could not be calculated due to a failure with the runner.
   #                        See the specific type and message for more details.
-  def calculate_score
+  def calculate_score(requesting_user)
     file_scores = nil
     # If prepared_runner raises an error, no Testrun will be created.
     prepared_runner do |runner, waiting_duration|
@@ -153,7 +153,7 @@ class Submission < ApplicationRecord
         output = run_test_file file, runner, waiting_duration
         # If the previous execution failed and there is at least one more test, we request a new runner.
         runner, waiting_duration = swap_runner(runner) if output[:status] == :timeout && index < assessment_number
-        score_file(output, file)
+        score_file(output, file, requesting_user)
       end
     end
     # We sort the files again, so that the linter tests are displayed last.
@@ -178,10 +178,10 @@ class Submission < ApplicationRecord
 
   # @raise [Runner::Error] if the file could not be tested due to a failure with the runner.
   #                        See the specific type and message for more details.
-  def test(file)
+  def test(file, requesting_user)
     prepared_runner do |runner, waiting_duration|
       output = run_test_file file, runner, waiting_duration
-      score_file output, file
+      score_file output, file, requesting_user
     rescue Runner::Error => e
       e.waiting_duration = waiting_duration
       raise
@@ -251,7 +251,7 @@ class Submission < ApplicationRecord
     }
   end
 
-  def score_file(output, file)
+  def score_file(output, file, requesting_user)
     assessor = Assessor.new(execution_environment:)
     assessment = assessor.assess(output)
     passed = ((assessment[:passed] == assessment[:count]) and (assessment[:score]).positive?)
@@ -264,6 +264,7 @@ class Submission < ApplicationRecord
     end
     testrun = Testrun.create(
       submission: self,
+      user: requesting_user,
       cause: 'assess', # Required to differ run and assess for RfC show
       file:, # Test file that was executed
       passed:,

app/models/user.rb

@@ -17,6 +17,7 @@ class User < ApplicationRecord
   has_many :participations, through: :submissions, source: :exercise, as: :user
   has_many :user_proxy_exercise_exercises, as: :user
   has_many :user_exercise_interventions, as: :user
+  has_many :testruns, as: :user
   has_many :interventions, through: :user_exercise_interventions
   has_many :remote_evaluation_mappings, as: :user
   has_one :codeharbor_link, dependent: :destroy