refactor unit tests

tests/unit/components/Dialogs/SelectAddStudentsToCourseDialog.spec.js

@@ -216,4 +216,25 @@ describe("SelectAddStudentsToCourseDialog", () => {
     await wrapper.vm.$nextTick();
     expect(wrapper.vm.updateCourseMembers).toHaveBeenCalled();
   });
+  it("test canSubmit", async () => {
+    const wrapper = shallowMount(SelectAddStudentsToCourseDialog, {
+      propsData: {
+        value: [],
+        selectedMembers: [],
+      },
+      mocks: {
+        $store: {
+          commit: jest.fn(),
+        },
+      },
+      vuetify,
+    });
+    wrapper.vm.course = {
+      name: "test",
+      capacity: 10,
+      registrations: [{ test: "test" }],
+    };
+    wrapper.vm.courseMembers = [{ test: "test" }];
+    expect(wrapper.vm.canSubmit).toEqual(true);
+  });
 });