diff --git a/src/main/java/de/unistuttgart/iste/meitrex/assignment_service/config/DevTopicPublisherConfiguration.java b/src/main/java/de/unistuttgart/iste/meitrex/assignment_service/config/DevTopicPublisherConfiguration.java
new file mode 100644
index 0000000..17d1731
--- /dev/null
+++ b/src/main/java/de/unistuttgart/iste/meitrex/assignment_service/config/DevTopicPublisherConfiguration.java
@@ -0,0 +1,29 @@
+package de.unistuttgart.iste.meitrex.assignment_service.config;
+
+
+import de.unistuttgart.iste.meitrex.common.dapr.MockTopicPublisher;
+import de.unistuttgart.iste.meitrex.common.dapr.TopicPublisher;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Profile;
+
+/**
+ * This is a dev-config for the TopicPublisher. It is intended to be used for development only.
+ * It will log all messages instead of sending them to the dapr topic.
+ * <p>
+ * The purpose of this is to allow developers to work on the media-service without having to run the dapr runtime.
+ * <p>
+ * To use this config, set the spring profile to "dev" (or any other profile that is not "prod").
+ */
+@Configuration
+@Profile("!prod")
+@Slf4j
+public class DevTopicPublisherConfiguration {
+
+    @Bean
+    public TopicPublisher getTopicPublisher() {
+        log.warn("TopicPublisher is mocked. This is intended for development use only.");
+        return new MockTopicPublisher();
+    }
+}
diff --git a/src/test/java/de/unistuttgart/iste/meitrex/assignment_service/api/MutationCreateAssignmentTest.java b/src/test/java/de/unistuttgart/iste/meitrex/assignment_service/api/MutationCreateAssignmentTest.java
new file mode 100644
index 0000000..7269ca3
--- /dev/null
+++ b/src/test/java/de/unistuttgart/iste/meitrex/assignment_service/api/MutationCreateAssignmentTest.java
@@ -0,0 +1,152 @@
+package de.unistuttgart.iste.meitrex.assignment_service.api;
+
+import de.unistuttgart.iste.meitrex.common.testutil.GraphQlApiTest;
+import de.unistuttgart.iste.meitrex.generated.dto.*;
+import org.junit.jupiter.api.Test;
+import org.springframework.graphql.test.tester.GraphQlTester;
+
+import java.time.LocalDate;
+import java.time.ZoneOffset;
+import java.util.List;
+import java.util.UUID;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.*;
+
+@GraphQlApiTest
+public class MutationCreateAssignmentTest {
+
+    @Test
+    void testCreateAssignment(final GraphQlTester tester) {
+        final UUID assessmentId = UUID.randomUUID();
+        final UUID courseId = UUID.randomUUID();
+        final UUID itemId1 = UUID.randomUUID();
+        final UUID itemId2 = UUID.randomUUID();
+        final UUID itemId3 = UUID.randomUUID();
+        final UUID itemId4 = UUID.randomUUID();
+        final UUID itemId5 = UUID.randomUUID();
+
+        final String query = """
+                mutation ($courseId: UUID!, $assessmentId: UUID!, $itemId1: UUID!, $itemId2: UUID!, $itemId3: UUID!, $itemId4: UUID!, $itemId5: UUID!){
+                    _internal_noauth_createAssignment(courseId: $courseId, assessmentId: $assessmentId, input: {
+                        totalCredits: 100,
+                        exercises: [
+                        {
+                            itemId: $itemId1,
+                            totalExerciseCredits: 25,
+                            subexercises: [
+                            {
+                                itemId: $itemId2,
+                                parentExerciseId: $itemId1,
+                                totalSubexerciseCredits: 20,
+                                number: "one a"
+                            },
+                            {
+                                itemId: $itemId3,
+                                parentExerciseId: $itemId1,
+                                totalSubexerciseCredits: 5,
+                                number: "one b"
+                            }
+                            ],
+                            number: "one"
+                        },
+                        {
+                            itemId: $itemId4,
+                            totalExerciseCredits: 75,
+                            subexercises: [
+                            {
+                                itemId: $itemId5,
+                                parentExerciseId: $itemId4,
+                                totalSubexerciseCredits: 75
+                                number: "two a"
+                            }
+                            ],
+                            number: "two"
+                        }
+                        ],
+                        assignmentType: EXERCISE_SHEET,
+                        date: "2021-01-01T00:00:00.000Z",
+                        description: "exercise sheet 1",
+                        requiredPercentage: 0.2
+                        }
+                    )
+                    {
+                        assessmentId
+                        courseId
+                        exercises {
+                            itemId
+                            totalExerciseCredits
+                            subexercises {
+                                itemId
+                                totalSubexerciseCredits
+                                number
+                            }
+                            number
+                        }
+                        date
+                        totalCredits
+                        assignmentType
+                        description
+                        requiredPercentage
+                    }
+                }
+                """;
+
+        final Assignment createdAssignment = tester.document(query)
+                .variable("assessmentId", assessmentId)
+                .variable("courseId", courseId)
+                .variable("itemId1", itemId1)
+                .variable("itemId2", itemId2)
+                .variable("itemId3", itemId3)
+                .variable("itemId4", itemId4)
+                .variable("itemId5", itemId5)
+                .execute()
+                .path("_internal_noauth_createAssignment").entity(Assignment.class).get();
+
+        // check that created Assignment is correct
+
+        assertThat(createdAssignment.getAssessmentId(), is(assessmentId));
+        assertThat(createdAssignment.getCourseId(), is(courseId));
+        assertThat(createdAssignment.getTotalCredits(), closeTo(100, 0));
+        assertThat(createdAssignment.getAssignmentType(), is(AssignmentType.EXERCISE_SHEET));
+        assertThat(createdAssignment.getDate(), is(LocalDate.of(2021, 1, 1).atStartOfDay().atOffset(ZoneOffset.UTC)));
+        assertThat(createdAssignment.getDescription(), is("exercise sheet 1"));
+        assertThat(createdAssignment.getRequiredPercentage(), is(0.2));
+
+        final List<Exercise> exercises = createdAssignment.getExercises();
+        assertThat(exercises, hasSize(2));
+
+        final Exercise exercise1 = exercises.get(0);
+        assertThat(exercise1.getItemId(), is(itemId1));
+        assertThat(exercise1.getTotalExerciseCredits(), closeTo(25, 0));
+        assertThat(exercise1.getNumber(), is("one"));
+
+        final List<Subexercise> subexercises1 = exercise1.getSubexercises();
+        assertThat(subexercises1, hasSize(2));
+
+        final Subexercise ex1subex1 = subexercises1.get(0);
+        assertThat(ex1subex1.getItemId(), is(itemId2));
+        assertThat(ex1subex1.getTotalSubexerciseCredits(), closeTo(20, 0));
+        assertThat(ex1subex1.getNumber(), is("one a"));
+
+        final Subexercise ex1subex2 = subexercises1.get(1);
+        assertThat(ex1subex2.getItemId(), is(itemId3));
+        assertThat(ex1subex2.getTotalSubexerciseCredits(), closeTo(5, 0));
+        assertThat(ex1subex2.getNumber(), is("one b"));
+
+        final Exercise exercise2 = exercises.get(1);
+        assertThat(exercise2.getItemId(), is(itemId4));
+        assertThat(exercise2.getTotalExerciseCredits(), closeTo(75, 0));
+        assertThat(exercise2.getNumber(), is("two"));
+
+        final List<Subexercise> subexercises2 = exercise2.getSubexercises();
+        assertThat(subexercises2, hasSize(1));
+
+        final Subexercise ex2subex1 = subexercises2.get(0);
+        assertThat(ex2subex1.getItemId(), is(itemId5));
+        assertThat(ex2subex1.getTotalSubexerciseCredits(), closeTo(75, 0));
+        assertThat(ex2subex1.getNumber(), is("two a"));
+
+    }
+
+}