public void FormatFlags_UsesDefaultDelimiter_WhenUsingValidValueWithEmptyDelimiter()
{
var value = ColorFlagEnum.Red | ColorFlagEnum.Green;
AssertTryFormatFlags(value, FlagEnums.FormatFlags(value));
void AssertTryFormatFlags(ColorFlagEnum value, string expected)
{
Assert.AreEqual(expected, FlagEnums.FormatFlags(value, string.Empty));
#if SPAN
var dest = new char[expected.Length];
Assert.True(FlagEnums.TryFormatFlags(value, dest, out var charsWritten, string.Empty));
Assert.AreEqual(expected.Length, charsWritten);
Assert.AreEqual(expected, new string(dest));
dest = new char[expected.Length - 1];
Assert.False(FlagEnums.TryFormatFlags(value, dest, out charsWritten, string.Empty));
Assert.AreEqual(0, charsWritten);
CollectionAssert.AreEqual(new char[dest.Length], dest);
#endif
}
}
public void FormatFlags_UsesDefaultDelimiter_WhenUsingValidValueWithNullDelimiter()
{
var value = ColorFlagEnum.Red | ColorFlagEnum.Green;
Assert.AreEqual(FlagEnums.FormatFlags(value), FlagEnums.FormatFlags(value, (string)null));
}
public void FormatFlags_ReturnsValidString_WhenUsingInvalidValue()
{
Assert.AreEqual("16", FlagEnums.FormatFlags((ColorFlagEnum)16));
}