### Question:
XMLScriptService implements ScriptService { public Document parse(LSInput source) { return XMLUtils.parse(source); } XMLScriptService(); static String escape(Object content); static String escapeForAttributeValue(Object content); static String escapeForElementContent(Object content); static String unescape(Object content); Document createDOMDocument(); Document parse(LSInput source); Document parse(byte[] content); Document parse(String content); Document parse(InputStream stream); String serialize(Node node); String serialize(Node node, boolean withXmlDeclaration); String transform(Source xml, Source xslt); String transform(Document xml, Document xslt); String transform(byte[] xml, byte[] xslt); String transform(String xml, String xslt);  }### Answer:
@Test void testParseString() { Document result = this.xml.parse("<?xml version=\"1.0\" encoding=\"UTF-8\"?><a b='c'>d</a>"); assertNotNull(result, "Failed to parse content"); assertEquals("a", result.getDocumentElement().getLocalName(), "Incorrect root node"); }
@Test void testParseByteArray() throws UnsupportedEncodingException { Document result = this.xml.parse("<?xml version=\"1.0\" encoding=\"UTF-8\"?><a b='c'>d</a>".getBytes("UTF-8")); assertNotNull(result, "Failed to parse content"); assertEquals("a", result.getDocumentElement().getLocalName(), "Incorrect root node"); }
@Test void testParseInputStream() throws UnsupportedEncodingException { Document result = this.xml.parse( new ByteArrayInputStream("<?xml version=\"1.0\" encoding=\"UTF-8\"?><a b='c'>d</a>".getBytes("UTF-8"))); assertNotNull(result, "Failed to parse content"); assertEquals("a", result.getDocumentElement().getLocalName(), "Incorrect root node"); }
@Test void testParseWithDifferentEncoding() throws UnsupportedEncodingException { Document result = this.xml.parse("<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?><a>\u00E9</a>".getBytes("ISO-8859-1")); assertNotNull(result, "Failed to parse content"); assertEquals("a", result.getDocumentElement().getLocalName(), "Incorrect root node"); assertEquals("\u00E9", result.getDocumentElement().getTextContent(), "Incorrect content"); }
@Test void testParseWithWrongEncoding() throws UnsupportedEncodingException { Document result = this.xml.parse("<?xml version=\"1.0\" encoding=\"UTF-8\"?><a>\u00E9</a>".getBytes("ISO-8859-1")); assertNull(result, "Content should be invalid with the specified encoding"); }
@Test void testParseWithoutXMLDeclaration() { Document result = this.xml.parse("<a>\u00E9</a>"); assertNotNull(result, "Failed to parse content"); assertEquals("a", result.getDocumentElement().getLocalName(), "Incorrect root node"); }
@Test void testParseInvalidDocument() { Document result = this.xml.parse("<?xml version=\"1.0\" encoding=\"UTF-8\"?><a></b>"); assertNull(result, "Invalid content shouldn't be parsed"); }
@Test void testParseNull() { Document result = this.xml.parse((String) null); assertNull(result, "Null Document input shouldn't be parsed"); result = this.xml.parse((byte[]) null); assertNull(result, "Null byte[] input shouldn't be parsed"); result = this.xml.parse((ByteArrayInputStream) null); assertNull(result, "Null InputStream input shouldn't be parsed"); result = this.xml.parse((LSInput) null); assertNull(result, "Null LSInput input shouldn't be parsed"); }