public void TriState_IFormattableWithFormatN_GivesSameResultAsToStringNegativeEqualPositive()
{
TriState testTriState = (Random.Next() % 3 - 1);
Assert.AreEqual(
testTriState.ToString("N", null),
testTriState.ToString(TriState.Style.NegativeEqualPositive),
"The result of IFormattable.ToString with format 'N' should be the same as ToString with style NegativeEqualPositive.");
}
public void TriState_IFormattableWithFormatT_GivesSameResultAsToStringTrueUndefinedFalse()
{
TriState testTriState = (Random.Next() % 3 - 1);
Assert.AreEqual(
testTriState.ToString("T", null),
testTriState.ToString(TriState.Style.TrueUndefinedFalse),
"The result of IFormattable.ToString with format 'T' should be the same as ToString with style TrueUndefinedFalse.");
}
public void TriState_IFormattableWithFormatY_GivesSameResultAsToStringYesUnknownNo()
{
TriState testTriState = (Random.Next() % 3 - 1);
Assert.AreEqual(
testTriState.ToString("Y", null),
testTriState.ToString(TriState.Style.YesUnknownNo),
"The result of IFormattable.ToString with format 'Y' should be the same as ToString with style YesUnknownNo.");
}
public void TriState_ToString_DefaultsToYesNoUnknownStyle()
{
TriState testTriState = (Random.Next() % 3 - 1);
Assert.AreEqual(
testTriState.ToString(TriState.Style.YesUnknownNo),
testTriState.ToString(),
"The string representation of a TriState should default to YesUnknownNo formatting.");
}
public void TriState_IFormattableWithValidStyle_GivesSameResultAsToString()
{
Random randSource = new Random();
TriState testTriState = (Random.Next() % 3 - 1);
TriState.Style testStyle =
(new List <TriState.Style>
{
TriState.Style.YesUnknownNo,
TriState.Style.NegativeEqualPositive,
TriState.Style.TrueUndefinedFalse
}).OrderBy(x => randSource.Next()).First();
Assert.AreEqual(
testTriState.ToString(testStyle),
testTriState.ToString(testStyle.ToString(), null),
"The result of IFormattable.ToString with the string representation of a style as the format should be the same as ToString with that same style.");
}
public void TriState_IFormattableWithInvalidStyle_ThrowsFormatException()
{
Random randSource = new Random();
TriState testTriState = (Random.Next() % 3 - 1);
String testInvalidStyle = "ThisIsNotAValidStyleType";
TriState.Style testStyle;
Assert.IsFalse(Enum.TryParse(testInvalidStyle, false, out testStyle));
String value = testTriState.ToString("ThisIsNotAValidStyleType", null);
}
public void TriState_ToStringWithInvalidStyle_ThrowsArgumentOutOfRangeException()
{
TriState testTriState = (Random.Next() % 3 - 1);
const TriState.Style testStyle = (TriState.Style) 4;
// note: this test assumes there is no style with value 4
Assert.AreEqual(
"4",
testStyle.ToString(),
"For this test to correctly function, the style used should be invalid. When this holds, the string representation of the style is a number.");
testTriState.ToString(testStyle);
}