diff --git a/src/web/app/components/comment-box/comment-table-modal/comment-table-modal.component.spec.ts b/src/web/app/components/comment-box/comment-table-modal/comment-table-modal.component.spec.ts
index 6a3ba9a1fbb..24eb2612ebc 100644
--- a/src/web/app/components/comment-box/comment-table-modal/comment-table-modal.component.spec.ts
+++ b/src/web/app/components/comment-box/comment-table-modal/comment-table-modal.component.spec.ts
@@ -3,11 +3,12 @@ import { ComponentFixture, TestBed, waitForAsync } from '@angular/core/testing';
 import { FormsModule } from '@angular/forms';
 import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
 import { NgbActiveModal, NgbModule } from '@ng-bootstrap/ng-bootstrap';
+import SpyInstance = jest.SpyInstance;
 import { RichTextEditorModule } from '../../rich-text-editor/rich-text-editor.module';
 import { TeammatesCommonModule } from '../../teammates-common/teammates-common.module';
 import { CommentEditFormComponent } from '../comment-edit-form/comment-edit-form.component';
 import { CommentRowComponent } from '../comment-row/comment-row.component';
-import { CommentTableComponent } from '../comment-table/comment-table.component';
+import { CommentTableComponent, CommentTableModel } from '../comment-table/comment-table.component';
 import {
   CommentVisibilityControlNamePipe,
   CommentVisibilityTypeDescriptionPipe, CommentVisibilityTypeNamePipe, CommentVisibilityTypesJointNamePipe,
@@ -17,6 +18,20 @@ import { CommentTableModalComponent } from './comment-table-modal.component';
 describe('CommentTableModalComponent', () => {
   let component: CommentTableModalComponent;
   let fixture: ComponentFixture<CommentTableModalComponent>;
+  const testModel: CommentTableModel = {
+    commentRows: [],
+    newCommentRow: {
+      commentEditFormModel: {
+        commentText: '',
+        isUsingCustomVisibilities: false,
+        showCommentTo: [],
+        showGiverNameTo: [],
+      },
+      isEditing: true,
+    },
+    isAddingNewComment: false,
+    isReadOnly: false,
+  };
 
   beforeEach(waitForAsync(() => {
     TestBed.configureTestingModule({
@@ -52,4 +67,40 @@ describe('CommentTableModalComponent', () => {
   it('should create', () => {
     expect(component).toBeTruthy();
   });
+
+  it('should set isAddingNewComment to true in the model', () => {
+    const ngOnChangesSpy: SpyInstance = jest.spyOn(component.modelChange, 'emit');
+    component.model = testModel;
+    component.ngOnChanges();
+    expect(ngOnChangesSpy).toHaveBeenCalledWith({
+      ...testModel,
+      isAddingNewComment: true,
+    });
+  });
+
+  it('should emit a DeleteCommentEvent with the correct index when triggerDeleteCommentEvent is called', () => {
+    const deleteCommentEventSpy: SpyInstance = jest.spyOn(component.deleteCommentEvent, 'emit');
+    const testIndex = 1;
+    component.triggerDeleteCommentEvent(testIndex);
+    expect(deleteCommentEventSpy).toHaveBeenCalledWith(testIndex);
+  });
+
+  it('should emit an UpdateCommentEvent with the correct index when triggerUpdateCommentEvent is called', () => {
+    const updateCommentEventSpy: SpyInstance = jest.spyOn(component.updateCommentEvent, 'emit');
+    const testIndex = 0;
+    component.triggerUpdateCommentEvent(testIndex);
+    expect(updateCommentEventSpy).toHaveBeenCalledWith(testIndex);
+  });
+
+  it('should emit a SaveNewCommentEvent when triggerSaveNewCommentEvent is called', () => {
+    const saveNewCommentEventSpy: SpyInstance = jest.spyOn(component.saveNewCommentEvent, 'emit');
+    component.triggerSaveNewCommentEvent();
+    expect(saveNewCommentEventSpy).toHaveBeenCalled();
+  });
+
+  it('should emit a ChangeFormModelEvent when triggerChangeFormModelEvent is called', () => {
+    const changeFormModelEventSpy = jest.spyOn(component.modelChange, 'emit');
+    component.triggerModelChange(testModel);
+    expect(changeFormModelEventSpy).toHaveBeenCalledWith(testModel);
+  });
 });
diff --git a/src/web/app/components/session-edit-form/session-edit-form.component.spec.ts b/src/web/app/components/session-edit-form/session-edit-form.component.spec.ts
index 3ee97b6f228..7d8acd9e033 100644
--- a/src/web/app/components/session-edit-form/session-edit-form.component.spec.ts
+++ b/src/web/app/components/session-edit-form/session-edit-form.component.spec.ts
@@ -52,5 +52,4 @@ describe('SessionEditFormComponent', () => {
     expect(time.hour).toEqual(21);
     expect(time.minute).toEqual(0);
   });
-
 });