茉莉角书写单元测试

Question

我正在做一个有角度的项目，并且正在尝试为此方法编写单元测试：

 showDocuments(): boolean {
        return this.case && this.case.documentList &&
            this.case.documentList.hasDocuments() || !this.case.documentList.isSucceeded;
    }

直到现在我要进行测试：

it('should show document', () => {
        expect(component).toBeDefined();
    });

谢谢

这是

DocumentListModel


import { DocumentModel } from 'afw/models';

/**
 * The model for documents that contains information about all the documents of the user
 * and document store queue for particular case number.
 */
export class DocumentListModel {

    /**
     * Indicator of how many documents there are in the queue
     */
    documentsInQueue?: number;

    /**
     * The actual documents
     */
    documents: Array<DocumentModel>;

    /**
     * Whether the DMS succeeded
     */
    isSucceeded: boolean;

    /**
     * Whether there is anything to display
     */
    hasDocuments() {
        return this.isSucceeded && this.documents && this.documents.length > 0 || this.documentsInQueue > 0;
    }

    /**
     * Constructor
     */
    constructor(item?: DocumentListModel) {
        if (item) {
            Object.assign(this, item);
        }
    }
}

有一个文档，该文档可以包含零个或多个附件