public void WhenMinIsLessThanMax_ThenReturnRandomLength()
{
var createdLen2 = false;
var createdLen3 = false;
using (var sut = new CryptoRandomString("A"))
{
for (var i = 0; i < 100; i++)
{
var result = sut.GenerateString(2, 3);
Assert.That(result, Is.EqualTo("AA").Or.EqualTo("AAA"));
if (result.Length == 2)
{
createdLen2 = true;
}
if (result.Length == 3)
{
createdLen3 = true;
}
}
}
Assert.That(createdLen2, Is.True);
Assert.That(createdLen3, Is.True);
}
public void WhenMinIsGreaterThanMax_ThenThrowException()
{
using (var sut = new CryptoRandomString(CharacterSets.Digits))
{
Assert.Throws <ArgumentOutOfRangeException>(() => sut.GenerateString(2, 1));
}
}
public void WhenMinAndMaxIsEqual_ThenReturnValidString()
{
using (var sut = new CryptoRandomString("A"))
{
var result = sut.GenerateString(2, 2);
Assert.That(result, Is.EqualTo("AA"));
}
}
public void WhenMinAndMaxIsOne_ThenReturnOneLengthString()
{
using (var sut = new CryptoRandomString("A"))
{
var result = sut.GenerateString(1, 1);
Assert.That(result, Is.EqualTo("A"));
}
}
public void WhenValidChars_ThenReturnOnlyValidChars()
{
using (var sut = new CryptoRandomString(CharacterSets.Digits))
{
var result = sut.GenerateString(100);
Assert.That(result.IsDigits(), Is.True);
}
}
public void WhenOnlyOneValidChar_ThenReturnSequenceOfChar()
{
using (var sut = new CryptoRandomString("A"))
{
var result = sut.GenerateString(3);
Assert.That(result, Is.EqualTo("AAA"));
}
}
public void WhenOnlyOneValidChar_AndLengthOne_ThenReturnOneCharString()
{
using (var sut = new CryptoRandomString("A"))
{
var result = sut.GenerateString(1);
Assert.That(result, Is.EqualTo("A"));
}
}
public void WhenLengthIsLessThanOne_ThenReturnEmpty(int length)
{
using (var sut = new CryptoRandomString("A"))
{
var result = sut.GenerateString(length);
Assert.That(result, Is.Empty);
}
}
public void WhenLongEnoughLength_ThenUsesValidCharsEdgeCases()
{
using (var sut = new CryptoRandomString(CharacterSets.Digits))
{
var result = sut.GenerateString(1000, 2000);
StringAssert.Contains(CharacterSets.Digits.First().ToString(), result);
StringAssert.Contains(CharacterSets.Digits.Last().ToString(), result);
}
}
public void WhenValidLength_ThenReturnCorrectLength()
{
const int length = 50;
using (var sut = new CryptoRandomString(CharacterSets.Digits))
{
var result = sut.GenerateString(length);
Assert.That(result.Length, Is.EqualTo(length));
}
}
public void WhenMinIsLessThanOneAndMaxIsZero_ThenReturnEmpty(int minLength)
{
using (var sut = new CryptoRandomString("A"))
{
for (var i = 0; i < 100; i++)
{
var result = sut.GenerateString(minLength, 0);
Assert.That(result, Is.Empty);
}
}
}
