diff --git a/app/assets/javascripts/editor/editor.js.erb b/app/assets/javascripts/editor/editor.js.erb
index 59c8cf51..3ac57856 100644
--- a/app/assets/javascripts/editor/editor.js.erb
+++ b/app/assets/javascripts/editor/editor.js.erb
@@ -94,7 +94,9 @@ var CodeOceanEditor = {
     },
 
     getCardClass: function (result) {
-        if (result.stderr && !result.score) {
+        if (result.file_role === 'teacher_defined_linter') {
+            return 'card bg-info text-white'
+        } else if (result.stderr && !result.score) {
             return 'card bg-danger text-white';
         } else if (result.score < 1) {
             return 'card bg-warning text-white';
@@ -428,7 +430,7 @@ var CodeOceanEditor = {
     },
 
     isActiveFileTestable: function () {
-        return this.isActiveFileExecutable() && ['teacher_defined_test', 'user_defined_test'].includes(this.active_frame.data('role'));
+        return this.isActiveFileExecutable() && ['teacher_defined_test', 'user_defined_test', 'teacher_defined_linter'].includes(this.active_frame.data('role'));
     },
 
     isBrowserSupported: function () {
@@ -443,8 +445,13 @@ var CodeOceanEditor = {
         card.find('.card-title .number').text(index + 1);
         card.find('.row .col-sm-9').eq(0).find('.number').eq(0).text(result.passed);
         card.find('.row .col-sm-9').eq(0).find('.number').eq(1).text(result.count);
-        card.find('.row .col-sm-9').eq(1).find('.number').eq(0).text(parseFloat((result.score * result.weight).toFixed(2)));
-        card.find('.row .col-sm-9').eq(1).find('.number').eq(1).text(result.weight);
+        if (result.weight !== 0) {
+            card.find('.row .col-sm-9').eq(1).find('.number').eq(0).text(parseFloat((result.score * result.weight).toFixed(2)));
+            card.find('.row .col-sm-9').eq(1).find('.number').eq(1).text(result.weight);
+        } else {
+            // Hide score row if no score could be achieved
+            card.find('.attribute-row.row').eq(1).addClass('d-none');
+        }
         card.find('.row .col-sm-9').eq(2).html(result.message);
 
         // Add error message from code to card
diff --git a/app/assets/javascripts/editor/evaluation.js b/app/assets/javascripts/editor/evaluation.js
index 7000a3b7..eb9accf4 100644
--- a/app/assets/javascripts/editor/evaluation.js
+++ b/app/assets/javascripts/editor/evaluation.js
@@ -48,7 +48,12 @@ CodeOceanEditorEvaluation = {
 
     printScoringResult: function (result, index) {
         $('#results').show();
-        var card = $('#dummies').children().first().clone();
+        let card;
+        if (result.file_role === 'teacher_defined_linter') {
+            card = $('#linter-dummies').children().first().clone();
+        } else {
+            card = $('#test-dummies').children().first().clone();
+        }
         if (card.isPresent()) {
             // the card won't be present if @embed_options[:hide_test_results] == true
             this.populateCard(card, result, index);
@@ -58,7 +63,7 @@ CodeOceanEditorEvaluation = {
 
     printScoringResults: function (response) {
         $('#results ul').first().html('');
-        $('.test-count .number').html(response.length);
+        $('.test-count .number').html(response.filter(function(x) { return x.file_role === 'teacher_defined_test'; }).length);
         this.clearOutput();
 
         _.each(response, function (result, index) {
diff --git a/app/assets/javascripts/exercises.js.erb b/app/assets/javascripts/exercises.js.erb
index 4d56b9d1..4d07cc0c 100644
--- a/app/assets/javascripts/exercises.js.erb
+++ b/app/assets/javascripts/exercises.js.erb
@@ -280,7 +280,7 @@ $(document).on('turbolinks:load', function () {
 
     var observeFileRoleChanges = function () {
         $(document).on('change', 'select[name$="[role]"]', function () {
-            var is_test_file = $(this).val() === 'teacher_defined_test';
+            var is_test_file = $(this).val() === 'teacher_defined_test' || $(this).val() === 'teacher_defined_linter';
             var parent = $(this).parents('.card');
             var fields = parent.find('.test-related-fields');
             if (is_test_file) {
diff --git a/app/controllers/concerns/submission_scoring.rb b/app/controllers/concerns/submission_scoring.rb
index 131680cb..4fc8d737 100644
--- a/app/controllers/concerns/submission_scoring.rb
+++ b/app/controllers/concerns/submission_scoring.rb
@@ -3,7 +3,7 @@ require 'concurrent/future'
 module SubmissionScoring
   def collect_test_results(submission)
     # Mnemosyne.trace 'custom.codeocean.collect_test_results', meta: { submission: submission.id } do
-    submission.collect_files.select(&:teacher_defined_test?).map do |file|
+    submission.collect_files.select(&:teacher_defined_assessment?).map do |file|
       future = Concurrent::Future.execute do
         # Mnemosyne.trace 'custom.codeocean.collect_test_results_block', meta: { file: file.id, submission: submission.id } do
         assessor = Assessor.new(execution_environment: submission.execution_environment)
@@ -29,7 +29,7 @@ module SubmissionScoring
             waiting_for_container_time: output[:waiting_for_container_time]
         ).save
         output.merge!(assessment)
-        output.merge!(filename: file.name_with_extension, message: feedback_message(file, output[:score]), weight: file.weight)
+        output.merge!(filename: file.name_with_extension, message: feedback_message(file, output), weight: file.weight)
         # end
       end
       future.value
@@ -45,9 +45,15 @@ module SubmissionScoring
 
   private :execute_test_file
 
-  def feedback_message(file, score)
+  def feedback_message(file, output)
     set_locale
-    score == Assessor::MAXIMUM_SCORE ? I18n.t('exercises.implement.default_feedback') : render_markdown(file.feedback_message)
+    if output[:score] == Assessor::MAXIMUM_SCORE && output[:file_role] == 'teacher_defined_test'
+      I18n.t('exercises.implement.default_test_feedback')
+    elsif output[:score] == Assessor::MAXIMUM_SCORE && output[:file_role] == 'teacher_defined_linter'
+      I18n.t('exercises.implement.default_linter_feedback')
+    else
+      render_markdown(file.feedback_message)
+    end
   end
 
   def score_submission(submission)
diff --git a/app/models/code_ocean/file.rb b/app/models/code_ocean/file.rb
index 3ee30afa..35e42070 100644
--- a/app/models/code_ocean/file.rb
+++ b/app/models/code_ocean/file.rb
@@ -19,11 +19,11 @@ module CodeOcean
     include DefaultValues
 
     DEFAULT_WEIGHT = 1.0
-    ROLES = %w(main_file reference_implementation regular_file executable_file teacher_defined_test user_defined_file user_defined_test)
-    TEACHER_DEFINED_ROLES = ROLES - %w(user_defined_file)
+    ROLES = %w[main_file reference_implementation regular_file executable_file teacher_defined_test user_defined_file user_defined_test teacher_defined_linter].freeze
+    TEACHER_DEFINED_ROLES = ROLES - %w[user_defined_file]
 
     after_initialize :set_default_values
-    before_validation :clear_weight, unless: :teacher_defined_test?
+    before_validation :clear_weight, unless: :teacher_defined_assessment?
     before_validation :hash_content, if: :content_present?
     before_validation :set_ancestor_values, if: :incomplete_descendent?
 
@@ -45,19 +45,20 @@ module CodeOcean
     ROLES.each do |role|
       scope :"#{role}s", -> { where(role: role) }
     end
+    scope :teacher_defined_assessments, -> { where(role: %w[teacher_defined_test teacher_defined_linter]) }
 
     default_scope { order(name: :asc) }
 
-    validates :feedback_message, if: :teacher_defined_test?, presence: true
-    validates :feedback_message, absence: true, unless: :teacher_defined_test?
+    validates :feedback_message, if: :teacher_defined_assessment?, presence: true
+    validates :feedback_message, absence: true, unless: :teacher_defined_assessment?
     validates :file_type_id, presence: true
     validates :hashed_content, if: :content_present?, presence: true
     validates :hidden, boolean_presence: true
     validates :name, presence: true
     validates :read_only, boolean_presence: true
     validates :role, inclusion: {in: ROLES}
-    validates :weight, if: :teacher_defined_test?, numericality: true, presence: true
-    validates :weight, absence: true, unless: :teacher_defined_test?
+    validates :weight, if: :teacher_defined_assessment?, numericality: true, presence: true
+    validates :weight, absence: true, unless: :teacher_defined_assessment?
     validates :file, presence: true if :context.is_a?(Submission)
 
     validates_with FileNameValidator, fields: [:name, :path, :file_type_id]
@@ -75,6 +76,10 @@ module CodeOcean
     end
     private :clear_weight
 
+    def teacher_defined_assessment?
+      teacher_defined_test? || teacher_defined_linter?
+    end
+
     def content_present?
       content? || native_file?
     end
@@ -111,7 +116,7 @@ module CodeOcean
 
     def set_default_values
       set_default_values_if_present(content: '', hidden: false, read_only: false)
-      set_default_values_if_present(weight: DEFAULT_WEIGHT) if teacher_defined_test?
+      set_default_values_if_present(weight: DEFAULT_WEIGHT) if teacher_defined_assessment?
     end
     private :set_default_values
 
diff --git a/app/models/exercise.rb b/app/models/exercise.rb
index 4c20fca6..07eae2c9 100644
--- a/app/models/exercise.rb
+++ b/app/models/exercise.rb
@@ -265,7 +265,7 @@ class Exercise < ApplicationRecord
                FROM     files
                WHERE    context_type = 'Exercise'
                AND      context_id = #{id}
-               AND      role = 'teacher_defined_test'
+               AND      role IN ('teacher_defined_test', 'teacher_defined_linter')
                GROUP BY context_id),
       -- filter for rows containing max points
       time_max_score AS
@@ -394,7 +394,7 @@ class Exercise < ApplicationRecord
                          WHERE exercise_id = #{id} AND user_id = #{user.id} AND user_type = '#{user_type}'
                          GROUP BY user_id, id, exercise_id),
               MAX_POINTS AS
-              (SELECT context_id AS ex_id, sum(weight) AS max_points FROM files WHERE context_type = 'Exercise' AND context_id = #{id} AND role = 'teacher_defined_test' GROUP BY context_id),
+              (SELECT context_id AS ex_id, sum(weight) AS max_points FROM files WHERE context_type = 'Exercise' AND context_id = #{id} AND role IN ('teacher_defined_test', 'teacher_defined_linter') GROUP BY context_id),
 
               -- filter for rows containing max points
               TIME_MAX_SCORE AS
@@ -508,7 +508,7 @@ class Exercise < ApplicationRecord
         0
       end
     else
-      files.teacher_defined_tests.sum(:weight)
+      files.teacher_defined_assessments.sum(:weight)
     end
   end
 
diff --git a/app/services/proforma_service/convert_exercise_to_task.rb b/app/services/proforma_service/convert_exercise_to_task.rb
index 80b4b6a9..4937acd3 100644
--- a/app/services/proforma_service/convert_exercise_to_task.rb
+++ b/app/services/proforma_service/convert_exercise_to_task.rb
@@ -55,7 +55,7 @@ module ProformaService
     end
 
     def tests
-      @exercise.files.filter { |file| file.role == 'teacher_defined_test' }.map do |file|
+      @exercise.files.filter { |file| file.role == 'teacher_defined_test' || file.role == 'teacher_defined_linter' }.map do |file|
         Proforma::Test.new(
           id: file.id,
           title: file.name,
@@ -78,7 +78,7 @@ module ProformaService
 
     def task_files
       @exercise.files
-               .filter { |file| !file.role.in? %w[reference_implementation teacher_defined_test] }.map do |file|
+               .filter { |file| !file.role.in? %w[reference_implementation teacher_defined_test teacher_defined_linter] }.map do |file|
         task_file(file)
       end
     end
diff --git a/app/views/exercises/_editor_output.html.slim b/app/views/exercises/_editor_output.html.slim
index 75855cb2..d9c377f0 100644
--- a/app/views/exercises/_editor_output.html.slim
+++ b/app/views/exercises/_editor_output.html.slim
@@ -12,16 +12,25 @@ div.h-100 id='output_sidebar_uncollapsed' class='d-none col-sm-12 enforce-bottom
           p.test-count == t('exercises.implement.test_count', count: 0)
           - unless @embed_options[:hide_test_results]
             ul.list-unstyled
-            ul#dummies.d-none.list-unstyled
+            ul#test-dummies.d-none.list-unstyled
               li.card.mt-2
                 .card-header.py-2
-                  h5.card-title.m-0 == t('exercises.implement.file', filename: '', number: 0)
+                  h5.card-title.m-0 == t('exercises.implement.test_file', filename: '', number: 0)
                 .card-body.bg-white.text-dark
                   = row(label: 'exercises.implement.passed_tests', value: t('shared.out_of', maximum_value: 0, value: 0).html_safe)
                   = row(label: 'activerecord.attributes.submission.score', value: t('shared.out_of', maximum_value: 0, value: 0).html_safe)
                   = row(label: 'exercises.implement.feedback')
                   = row(label: 'exercises.implement.error_messages')
                   /= row(label: 'exercises.implement.output', value: link_to(t('shared.show'), '#'))
+            ul#linter-dummies.d-none.list-unstyled
+              li.card.mt-2
+                .card-header.py-2
+                  h5.card-title.m-0 == t('exercises.implement.linter_file', filename: '', number: 0)
+                .card-body.bg-white.text-dark
+                  = row(label: 'exercises.implement.code_rating', value: t('shared.out_of', maximum_value: 0, value: 0).html_safe)
+                  = row(label: 'activerecord.attributes.submission.score', value: t('shared.out_of', maximum_value: 0, value: 0).html_safe)
+                  = row(label: 'exercises.implement.feedback')
+                  = row(label: 'exercises.implement.messages')
         #score data-maximum-score=@exercise.maximum_score data-score=@exercise.final_submission(@current_user).try(:score)
           h4
             span == "#{t('activerecord.attributes.submission.score')}:&nbsp;"
diff --git a/app/views/exercises/_file_form.html.slim b/app/views/exercises/_file_form.html.slim
index ffb0def6..5d400dce 100644
--- a/app/views/exercises/_file_form.html.slim
+++ b/app/views/exercises/_file_form.html.slim
@@ -37,12 +37,12 @@ li.card.mt-2
         label.form-check-label
           = f.check_box(:read_only, class: 'form-check-input')
           = t('activerecord.attributes.file.read_only')
-      .test-related-fields style="display: #{f.object.teacher_defined_test? ? 'initial' : 'none'};"
+      .test-related-fields style="display: #{f.object.teacher_defined_assessment? ? 'initial' : 'none'};"
         .form-group
           = f.label(:name, t('activerecord.attributes.file.feedback_message'))
           = f.text_area(:feedback_message, class: 'form-control', maxlength: 255)
           .help-block.form-text = t('.hints.feedback_message')
         .form-group
           = f.label(:role, t('activerecord.attributes.file.weight'))
-          = f.number_field(:weight, class: 'form-control', min: 1, step: 'any')
+          = f.number_field(:weight, class: 'form-control', min: 0, step: 'any')
       = render('code_field', attribute: :content, form: f, label: t('activerecord.attributes.file.content'))
diff --git a/app/views/exercises/index.html.slim b/app/views/exercises/index.html.slim
index 337eebab..762b5b85 100644
--- a/app/views/exercises/index.html.slim
+++ b/app/views/exercises/index.html.slim
@@ -30,7 +30,7 @@ h1 = Exercise.model_name.human(count: 2)
         tr data-id=exercise.id
           td.p-1.pt-2 = link_to_if(policy(exercise).show?, exercise.title, exercise, 'data-turbolinks' => "false")
           td.p-1.pt-2 = link_to_if(exercise.execution_environment && policy(exercise.execution_environment).show?, exercise.execution_environment, exercise.execution_environment)
-          td.p-1.pt-2 = exercise.files.teacher_defined_tests.count
+          td.p-1.pt-2 = exercise.files.teacher_defined_assessments.count
           td.p-1.pt-2 = exercise.maximum_score
           td.p-1.pt-2 = exercise.exercise_tags.count
           td.p-1.pt-2 = exercise.expected_difficulty
diff --git a/app/views/request_for_comments/show.html.slim b/app/views/request_for_comments/show.html.slim
index 3cf276ea..1111e2b8 100644
--- a/app/views/request_for_comments/show.html.slim
+++ b/app/views/request_for_comments/show.html.slim
@@ -53,7 +53,9 @@
                 - rescue Timeout::Error
               pre= output or t('request_for_comments.no_output')
 
-        - assess_runs = testruns.select {|run| run.cause == 'assess'}
+        - assess_runs = testruns.select {|run| run.cause == 'assess' }
+        - unless @current_user.admin?
+          - assess_runs = assess_runs.select {|run| run.file.teacher_defined_test? }
         - if assess_runs.size > 0
           h5.mt-4= t('request_for_comments.test_results')
           .testrun-assess-results
diff --git a/app/views/shared/_file.html.slim b/app/views/shared/_file.html.slim
index a98c92da..b8122113 100644
--- a/app/views/shared/_file.html.slim
+++ b/app/views/shared/_file.html.slim
@@ -4,7 +4,7 @@
 = row(label: 'file.role', value: file.role? ? t("files.roles.#{file.role}") : '')
 = row(label: 'file.hidden', value: file.hidden)
 = row(label: 'file.read_only', value: file.read_only)
-- if file.teacher_defined_test?
+- if file.teacher_defined_assessment?
   = row(label: 'file.feedback_message', value: render_markdown(file.feedback_message), class: 'm-0')
   = row(label: 'file.weight', value: file.weight)
 = row(label: 'file.content', value: file.native_file? ? link_to_if(policy(file).show?, file.native_file.file.filename, file.native_file.url) : code_tag(file.content))
diff --git a/config/locales/de.yml b/config/locales/de.yml
index 11c11141..120b9aed 100644
--- a/config/locales/de.yml
+++ b/config/locales/de.yml
@@ -381,16 +381,20 @@ de:
       alert:
         text: 'Ihr Browser unterstützt nicht alle Funktionalitäten, die %{application_name} benötigt. Bitte nutzen Sie einen modernen Browser, um %{application_name} zu besuchen.'
         title: Ihr Browser wird nicht unterstützt!
-      default_feedback: Sehr gut. Alle Tests waren erfolgreich.
+      default_test_feedback: Sehr gut. Alle Tests waren erfolgreich.
+      default_linter_feedback: Sehr gut. Der Linter hat nichts mehr zu beanstanden.
       error_messages: Fehlermeldungen
+      messages: Meldungen
       feedback: Feedback
-      file: 'Test-Datei <span class="number">%{number}</span> (<span class="filename">%{filename}</span>)'
+      test_file: 'Test-Datei <span class="number">%{number}</span> (<span class="filename">%{filename}</span>)'
+      linter_file: 'Linter-Feedback (ohne Punkte)<span class="number d-none">%{number}</span><span class="filename d-none">%{filename}</span>'
       hint: Hinweis
       no_files: Die Aufgabe umfasst noch keine sichtbaren Dateien.
       no_output: Die letzte Code-Ausführung terminierte am %{timestamp} ohne Ausgabe.
       no_output_yet: Bisher existiert noch keine Ausgabe.
       output: Programm-Ausgabe
       passed_tests: Erfolgreiche Tests
+      code_rating: Code-Stil
       progress: Fortschritt
       results: Ergebnisse
       start: Mit dem Programmieren beginnen
@@ -500,6 +504,7 @@ de:
       teacher_defined_test: Test als Bewertungsgrundlage
       user_defined_file: Benutzerdefinierte Datei
       user_defined_test: Benutzerdefinierter Test
+      teacher_defined_linter: Linter als Bewertungsgrundlage
     error:
       filename: "Die Datei konnte nicht gespeichert werden, da eine Datei mit dem Namen '%{name}' bereits existiert."
   hints:
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 9d70753f..d8ca265a 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -381,16 +381,20 @@ en:
       alert:
         text: 'Your browser does not support features required for using %{application_name}. Please access %{application_name} using a modern browser.'
         title: Your browser is not supported!
-      default_feedback: Well done. All tests have been passed.
+      default_test_feedback: Well done. All tests have been passed.
+      default_linter_feedback: Well done. The linter is completly satisfied.
       error_messages: Error Messages
+      messages: Messages
       feedback: Feedback
-      file: 'Test File <span class="number">%{number}</span> (<span class="filename">%{filename}</span>)'
+      test_file: 'Test File <span class="number">%{number}</span> (<span class="filename">%{filename}</span>)'
+      linter_file: 'Linter Feedback (not graded)<span class="number d-none">%{number}</span><span class="filename d-none">%{filename}</span>'
       hint: Hint
       no_files: The exercise does not comprise visible files yet.
       no_output: The last code run finished on %{timestamp} without any output.
       no_output_yet: There is no output yet.
       output: Program Output
       passed_tests: Passed Tests
+      code_rating: Code Rating
       progress: Progress
       results: Results
       start: Start Coding
@@ -500,6 +504,7 @@ en:
       teacher_defined_test: Test for Assessment
       user_defined_file: User-defined File
       user_defined_test: User-defined Test
+      teacher_defined_linter: Linter for Assessment
     error:
       filename: "The file could not be saved, because another file with the name '%{name}' already exists."
   hints:
diff --git a/lib/docker_client.rb b/lib/docker_client.rb
index fdf25631..d35a2849 100644
--- a/lib/docker_client.rb
+++ b/lib/docker_client.rb
@@ -375,10 +375,13 @@ class DockerClient
     """
     Stick to existing Docker API with exec command.
     """
-    filepath = submission.collect_files.find { |f| f.name_with_extension == filename }.filepath
+    file = submission.collect_files.find { |f| f.name_with_extension == filename }
+    filepath = file.filepath
     command = submission.execution_environment.test_command % command_substitutions(filepath)
     create_workspace_files = proc { create_workspace_files(container, submission) }
-    execute_command(command, create_workspace_files, block)
+    test_result = execute_command(command, create_workspace_files, block)
+    test_result.merge!(file_role: file.role)
+    test_result
   end
 
   def self.find_image_by_tag(tag)
diff --git a/lib/py_unit_and_py_lint_adapter.rb b/lib/py_unit_and_py_lint_adapter.rb
index ef49f141..4b6dea5f 100644
--- a/lib/py_unit_and_py_lint_adapter.rb
+++ b/lib/py_unit_and_py_lint_adapter.rb
@@ -5,9 +5,10 @@ class PyUnitAndPyLintAdapter < TestingFrameworkAdapter
   end
 
   def parse_output(output)
-    PyLintAdapter.new.parse_output(output)
-  rescue NoMethodError
-    # The regex for PyLint failed and did not return any matches
-    PyUnitAdapter.new.parse_output(output)
+    if output[:file_role] == 'teacher_defined_linter'
+      PyLintAdapter.new.parse_output(output)
+    else
+      PyUnitAdapter.new.parse_output(output)
+    end
   end
 end
diff --git a/spec/concerns/submission_scoring_spec.rb b/spec/concerns/submission_scoring_spec.rb
index c32fe9c3..62b29817 100644
--- a/spec/concerns/submission_scoring_spec.rb
+++ b/spec/concerns/submission_scoring_spec.rb
@@ -13,7 +13,7 @@ describe SubmissionScoring do
     after(:each) { controller.send(:collect_test_results, @submission) }
 
     it 'executes every teacher-defined test file' do
-      @submission.collect_files.select(&:teacher_defined_test?).each do |file|
+      @submission.collect_files.select(&:teacher_defined_assessment?).each do |file|
         expect(controller).to receive(:execute_test_file).with(file, @submission).and_return({})
       end
     end
diff --git a/spec/controllers/submissions_controller_spec.rb b/spec/controllers/submissions_controller_spec.rb
index 97dd2eb3..3cfecc64 100644
--- a/spec/controllers/submissions_controller_spec.rb
+++ b/spec/controllers/submissions_controller_spec.rb
@@ -241,7 +241,7 @@ describe SubmissionsController do
   end
 
   describe 'GET #test' do
-    let(:filename) { submission.collect_files.detect(&:teacher_defined_test?).name_with_extension }
+    let(:filename) { submission.collect_files.detect(&:teacher_defined_assessment?).name_with_extension }
     let(:output) { {} }
 
     before(:each) do
diff --git a/spec/lib/docker_client_spec.rb b/spec/lib/docker_client_spec.rb
index 4884a802..06b1faa2 100644
--- a/spec/lib/docker_client_spec.rb
+++ b/spec/lib/docker_client_spec.rb
@@ -263,7 +263,7 @@ describe DockerClient, docker: true do
   end
 
   describe '#execute_test_command' do
-    let(:filename) { submission.exercise.files.detect { |file| file.role == 'teacher_defined_test' }.name_with_extension }
+    let(:filename) { submission.exercise.files.detect { |file| file.role == 'teacher_defined_test' || file.role == 'teacher_defined_linter' }.name_with_extension }
     after(:each) { docker_client.send(:execute_test_command, submission, filename) }
 
     it 'takes a container from the pool' do
diff --git a/spec/services/proforma_service/convert_task_to_exercise_spec.rb b/spec/services/proforma_service/convert_task_to_exercise_spec.rb
index ad41de3e..7cd93af8 100644
--- a/spec/services/proforma_service/convert_task_to_exercise_spec.rb
+++ b/spec/services/proforma_service/convert_task_to_exercise_spec.rb
@@ -3,6 +3,8 @@
 require 'rails_helper'
 
 describe ProformaService::ConvertTaskToExercise do
+  # ToDo: Add teacher_defined_linter for tests
+
   describe '.new' do
     subject(:convert_to_exercise_service) { described_class.new(task: task, user: user, exercise: exercise) }