ValidateTor { public boolean hasAtleastOneLetter(String str) { return regexMatcher.find(str, RegexPresetPattern.ATLEAST_ONE_LETTER); } ValidateTor(); boolean containsSubstring(String str, String seed); boolean isAlpha(String str); boolean isAlphanumeric(String str); boolean isBoolean(String str); boolean isIPAddress(String str); boolean isEmail(String str); boolean isPhoneNumber(String str); boolean isEmpty(String str); boolean isBase64(String str); boolean isDecimal(String str); boolean isAtleastLength(String str, int len); boolean isAtMostLength(String str, int len); boolean isLowercase(String str); boolean isUppercase(String str); boolean isValidMD5(String str); boolean isNumeric(String str); boolean isMACAddress(String str); boolean isJSON(String str); boolean isInteger(String str); boolean isIn(String str, String[] values); boolean isHexadecimal(String str); boolean isPinCode(String str); boolean isHexColor(String str); boolean hasAtleastOneDigit(String str); boolean hasAtleastOneLetter(String str); boolean hasAtleastOneLowercaseCharacter(String str); boolean hasAtleastOneUppercaseCharacter(String str); boolean hasAtleastOneSpecialCharacter(String str); boolean validateCreditCard(String str); CardInformation getCreditCardInfo(String str);  }
@Test public void hasAtleastOneLetter_shouldReturnTrue_whenStringHasAtleastOneLetter() throws Exception { assertEquals(true, validateTor.hasAtleastOneLetter("abcde1")); assertEquals(true, validateTor.hasAtleastOneLetter("a1b2c3")); assertEquals(true, validateTor.hasAtleastOneLetter("123abc")); assertEquals(true, validateTor.hasAtleastOneLetter("abcdef")); assertEquals(true, validateTor.hasAtleastOneLetter("ABC")); assertEquals(true, validateTor.hasAtleastOneLetter("AB123")); assertEquals(true, validateTor.hasAtleastOneLetter("aBcD123#")); }
@Test public void hasAtleastOneLetter_shouldReturnFalse_whenStringDoesnotHasAtleastOneLetter() throws Exception { assertEquals(false, validateTor.hasAtleastOneLetter("123456")); assertEquals(false, validateTor.hasAtleastOneLetter("11#$")); assertEquals(false, validateTor.hasAtleastOneLetter("#$%^&")); }