### Question:
GpHosterClient { public boolean userExists() throws IOException { return userExists(getUserName()); } GpHosterClient(GpHosterServerSettings serverDesc);  GpHosterClient(); void setUserName(String userName); String getUserName(); void setPassword(String password); String getPassword(); boolean userExists(); boolean atlasBasenameFree(String baseName); boolean userDelete(String delUser, String delUserPassword); boolean userDelete(); CREATE_USER_RESULT userCreate(String username, String email); AtlasFingerprint informAboutUploadedZipFile(String atlasBasename,
			File zipFile); boolean canEditAtlas(String atlasBasename); AtlasFingerprint informAboutUploadedZipFile(String atlasBasename,
			File zipFile, String username, String password); String sendRESTstring(String method, String url,
			String xmlPostContent, String username, String password); String sendRESTstring(String method, String urlEncoded,
			String postData, String contentType, String accept,
			String username, String password); boolean userExists(String checkUsername); AtlasFingerprint atlasFingerprint(String atlasBasename); SERVICE_STATUS checkService(); String getFtpHostname(); void setFtpHostname(String ftphostname); GpHosterServerSettings getServerSettings(); boolean validateCredentials(); String getUrlForAtlas(String basename); static final String DEFAULT_GPHOSTER_REST_URL; static final String DEFAULT_GPHOSTER_FTP_HOSTNAME; static final String DEFAULt_GPHOSTER_FTP_URL; }### Answer:
@Test @Ignore public void testUserExists() throws IOException { if (gphc.checkService() != SERVICE_STATUS.OK) return; assertFalse(gphc.userExists("asd")); assertTrue(gphc.userExists("w2")); }