//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes: //ORIGINAL LINE: @Test public void nextAlphaNumericString() public virtual void NextAlphaNumericString() { ISet <int> seenDigits = "ABCDEFGHIJKLMNOPQRSTUVXYZabcdefghijklmnopqrstuvxyz0123456789".chars().boxed().collect(Collectors.toSet()); for (int i = 0; i < ITERATIONS; i++) { TextValue textValue = RandomValues.nextAlphaNumericTextValue(10, 20); string asString = textValue.StringValue(); for (int j = 0; j < asString.Length; j++) { int ch = asString[j]; assertTrue("Not a character nor letter: " + ch, Character.isAlphabetic(ch) || char.IsDigit(ch)); seenDigits.remove(ch); } } assertThat(seenDigits, empty()); }