public void TestToDisplayString_Zero()
{
var timeSpan = new TimeSpan(0, 0, 0);
var result = timeSpan.ToDisplayString();
Assert.AreEqual("00:00:00", result);
}
public void TestToDisplayString_WorkedMoreThanADay()
{
var timeSpan = new TimeSpan(1, 0, 0, 1); // 1 day, 1 second
var result = timeSpan.ToDisplayString();
Assert.AreEqual("24:00:01", result);
}
public void TestToDisplayString_NegativeDaysVerySmall()
{
var timeSpan = new TimeSpan(0, 0, 0, -59);
var result = timeSpan.ToDisplayString();
Assert.AreEqual("-00:00:59", result);
}
public void TestToDisplayString_NegativeDays()
{
var timeSpan = new TimeSpan(-1, -23, -59, -59);
var result = timeSpan.ToDisplayString();
Assert.AreEqual("-47:59:59", result);
}
public void TestToDisplayString_LeadingZero_AllNegative()
{
var timeSpan = new TimeSpan(0, -45, -30);
var result = timeSpan.ToDisplayString();
Assert.AreEqual("-00:45:30", result);
}
public void TestToDisplayString_LeadingZeroNegativeSeconds()
{
var timeSpan = new TimeSpan(0, 0, -30);
var result = timeSpan.ToDisplayString();
Assert.AreEqual("-00:00:30", result);
}
