Add tests for getter and setter

apps/server/src/shared/domain/domainobject/board/file-element.do.spec.ts

@@ -4,6 +4,62 @@ import { FileElement } from './file-element.do';
 import { BoardCompositeVisitor, BoardCompositeVisitorAsync } from './types';
 
 describe(FileElement.name, () => {
+	describe('get caption', () => {
+		describe('when caption is set', () => {
+			it('should return the caption', () => {
+				const fileElement = fileElementFactory.build();
+
+				expect(fileElement.caption).toEqual(fileElement.caption);
+			});
+		});
+
+		describe('when caption is not set', () => {
+			it('should return an empty string', () => {
+				const fileElement = fileElementFactory.build({ caption: undefined });
+
+				expect(fileElement.caption).toEqual('');
+			});
+		});
+	});
+
+	describe('set caption', () => {
+		it('should set caption', () => {
+			const fileElement = fileElementFactory.build();
+			const text = 'new caption';
+			fileElement.caption = text;
+
+			expect(fileElement.caption).toEqual(text);
+		});
+	});
+
+	describe('get alternative text', () => {
+		describe('when alternative text is set', () => {
+			it('should return the alternative text', () => {
+				const fileElement = fileElementFactory.build();
+
+				expect(fileElement.alternativeText).toEqual(fileElement.alternativeText);
+			});
+		});
+
+		describe('when alternative text is not set', () => {
+			it('should return an empty string', () => {
+				const fileElement = fileElementFactory.build({ alternativeText: undefined });
+
+				expect(fileElement.alternativeText).toEqual('');
+			});
+		});
+	});
+
+	describe('set alternative text', () => {
+		it('should set alternative text', () => {
+			const fileElement = fileElementFactory.build();
+			const text = 'new alternative text';
+			fileElement.alternativeText = text;
+
+			expect(fileElement.alternativeText).toEqual(text);
+		});
+	});
+
 	describe('when trying to add a child to a file element', () => {
 		it('should throw an error ', () => {
 			const fileElement = fileElementFactory.build();