### Question:
ValidateTor { public boolean containsSubstring(String str, String seed) { return Pattern.compile(Pattern.quote(seed), Pattern.CASE_INSENSITIVE).matcher(str).find(); } 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);  }### Answer:
@Test public void containsSubstring_shouldReturnsTrue_whenSeedIsPresentInsideString_ignoreCase() throws Exception { assertEquals(true, validateTor.containsSubstring("abcdEfgHiJK", "def")); assertEquals(true, validateTor.containsSubstring("abcdEfgHiJK", "DEFG")); assertEquals(true, validateTor.containsSubstring("abcdEfgHiJK", "f")); assertEquals(true, validateTor.containsSubstring("abcdEfgHiJK", "F")); assertEquals(true, validateTor.containsSubstring("abcdEfgHiJK", "E")); }
@Test public void containsSubstring_shouldReturnsFalse_whenSeedIsNotPresentInsideString_ignoreCase() throws Exception { assertEquals(false, validateTor.containsSubstring("abcdEfgHiJK", "acd")); }