builder

account.java

	public static class AccountBuilder {
		String firstName;
		String surname;
		String username;
		String password;
		String phone;

		@Override
		public String toString() {
			return "AccountBuilder [firstName=" + firstName + ", Surname="
					+ surname + ", username=" + username + ", password="
					+ password + ", phone=" + phone + "]";
		}

		public static AccountBuilder Default() {
			return new AccountBuilder().FirstName("Laura").Surname("Laura")
					.Username("Username1").Password("mari-liis89")
					.Phone("55965555");
		}

		public AccountBuilder FirstName(String firstName) {
			this.firstName = firstName;
			return this;
		}

		public AccountBuilder Surname(String surname) {
			this.surname = surname;
			return this;
		}

		public AccountBuilder Username(String username) {
			this.username = username;
			return this;
		}

		public AccountBuilder Password(String password) {
			this.password = password;
			return this;
		}

		public AccountBuilder Phone(String phone) {
			this.phone = phone;
			return this;
		}

		public CreateAccount build() {
			return new CreateAccount(firstName, surname, username, password,
					phone);
		}
	}

exampletests.java

	@Test
	public void testCreateAccount_default() throws Exception {
		CreateAccount.AccountBuilder.Default().build();
	}
	@Test
	public void testCreateAccount_FirstName_pass_0() throws Exception {
		CreateAccount.AccountBuilder.Default().FirstName(Firstnames_pass[0]).build();
	}
	@Test(expected = Exception.class)
	public void testCreateAccount_FirstName_fail_0() throws Exception {
		CreateAccount.AccountBuilder.Default().FirstName(Firstnames_fail[0]).build();
	}

header.java

private CreateAccount(String firstName, String surname, String username, String password, String phone) 

testcases.java

	public static String[] Firstnames_pass = new String[] {
			new String(new char[1]).replace('\0', 'x'),
			new String(new char[2]).replace('\0', 'x'),
			new String(new char[15]).replace('\0', 'x'),
			new String(new char[16]).replace('\0', 'x'), "Laura" };
	public static String[] Firstnames_fail = new String[] { null, "",
			new String(new char[17]).replace('\0', 'x'), "Laura8", "Laura*" };

	public static String[] Surnames_pass = Firstnames_pass;
	public static String[] Surnames_fail = Firstnames_fail;

	public static String[] Usernames_pass = new String[] {
			new String(new char[1]).replace('\0', 'x'),
			new String(new char[2]).replace('\0', 'x'),
			new String(new char[15]).replace('\0', 'x'),
			new String(new char[16]).replace('\0', 'x'), "1", "x1", "x*", "x*1" };
	public static String[] Usernames_fail = new String[] { null, "",
			new String(new char[17]).replace('\0', 'x'),
			new String(new char[17]).replace('\0', '1'), "1*", "*" };

	public static String[] Passwords_pass = new String[] {
			new String(new char[4]).replace('\0', 'x'),
			new String(new char[5]).replace('\0', 'x'),
			new String(new char[15]).replace('\0', 'x'),
			new String(new char[16]).replace('\0', 'x'), "1111", "x111",
			"x***", "x**1" };
	public static String[] Passwords_fail = new String[] { null, "",
			new String(new char[3]).replace('\0', 'x'),
			new String(new char[17]).replace('\0', 'x'),
			new String(new char[17]).replace('\0', '1'), "1*", "*" };

	public static String[] Phones_pass = new String[] {
			new String(new char[3]).replace('\0', '1'),
			new String(new char[4]).replace('\0', '1'),
			new String(new char[19]).replace('\0', '1'),
			new String(new char[20]).replace('\0', '1') };
	public static String[] Phones_fail = new String[] { null, "",
			new String(new char[3]).replace('\0', '1') + "x",
			new String(new char[3]).replace('\0', '1') + "*",
			new String(new char[3]).replace('\0', '*'),
			new String(new char[3]).replace('\0', 'x') };

testcasest.java

Assert.assertTrue(Pattern.compile("[a-zA-Z]{1,16}").matcher(firstName).matches());