### Question:
NetworkDefinition { public void setDocument(Document value) { this.document = value; }  Document getDocument(); void setDocument(Document value); List<Node> getNode(); List<Bus> getBus();  }### Answer:
@Test public void testSetDocument() { String author = "Lyle Lanley"; String company = "North Haverbrook Railway Ltd."; String content = "The Springfiled Monorail is a short-lived transport system."; String date = "1993-01-14"; String name = "Springfield Monorail"; String version = "2.0"; doc = netdef.getDocument(); doc.setAuthor(author); doc.setCompany(company); doc.setContent(content); doc.setDate(date); doc.setName(name); doc.setVersion(version); netdef.setDocument(doc); assertEquals("Unexpected document author", author, doc.getAuthor()); assertEquals("Unexpected document company", company, doc.getCompany()); assertEquals("Unexpected document content", content, doc.getContent()); assertEquals("Unexpected document date", date, doc.getDate()); assertEquals("Unexpected document name", name, doc.getName()); assertEquals("Unexpected document version", version, doc.getVersion()); }