public void UnsetFlag_DoesNotMutateArgument()
{
NoZeroFlags fourAlreadySet = NoZeroFlags.Three | NoZeroFlags.Four;
Assert.That(fourAlreadySet.HasFlag(NoZeroFlags.Four), Is.True);
fourAlreadySet.UnsetFlag(NoZeroFlags.Four);
Assert.That(fourAlreadySet.HasFlag(NoZeroFlags.Four), Is.True);
}
public void UnsetFlag_NotSetValue_LeavesItUnset()
{
NoZeroFlags fourNotSet = NoZeroFlags.Three;
Assert.That(fourNotSet.HasFlag(NoZeroFlags.Four), Is.False);
var fourUnset = fourNotSet.UnsetFlag(NoZeroFlags.Four);
Assert.That(fourUnset.HasFlag(NoZeroFlags.Four), Is.False);
Assert.That(fourUnset.HasFlag(NoZeroFlags.Three), Is.True);
}
public void UnsetFlag_AlreadySetValue_RemovesItFromSetValues()
{
NoZeroFlags fourAlreadySet = NoZeroFlags.Three | NoZeroFlags.Four;
Assert.That(fourAlreadySet.HasFlag(NoZeroFlags.Four), Is.True);
var fourUnset = fourAlreadySet.UnsetFlag(NoZeroFlags.Four);
Assert.That(fourUnset.HasFlag(NoZeroFlags.Four), Is.False);
Assert.That(fourUnset.HasFlag(NoZeroFlags.Three), Is.True);
}
public void Explore()
{
Assert.That(Enumeration.IsEnum <ActionTargets>(), Is.True);
Assert.That(Enumeration.IsEnum <int>(), Is.False);
Assert.That(Enumeration.AssertEnum <ActionTargets>, Throws.Nothing);
Assert.That(Enumeration.AssertEnum <int>, Throws
.InstanceOf <ArgumentException>()
.With.Message.Contains("Int32"));
Assert.That(Enumeration.IsFlags <ZeroFlags>(), Is.True);
Assert.That(Enumeration.IsFlags <IntEnum>(), Is.False);
Assert.That(Enumeration.AssertFlags <ZeroFlags>, Throws.Nothing);
Assert.That(Enumeration.AssertFlags <IntEnum>, Throws
.ArgumentException
.With.Message.Contains("IntEnum"));
Assert.That(Enumeration.IsDefined(StringComparison.Ordinal), Is.True);
Assert.That(Enumeration.IsDefined((StringComparison)100), Is.False);
Assert.That(Enumeration.IsDefined <LongEnum>(1L), Is.True);
Assert.That(Enumeration.IsDefined <StringComparison>("undefined"), Is.False);
Assert.That(Enumeration.IsDefined <StringComparison>("oRDinaL", ignoreCase: true), Is.True);
Assert.That(() => Enumeration.AssertDefined(StringComparison.Ordinal), Throws.Nothing);
Assert.That(() => Enumeration.AssertDefined <StringComparison>("ordinal"), Throws
.InstanceOf <InvalidEnumArgumentException>()
.With.Message.Contains("ordinal")
.And.With.Message.Contains("StringComparison"));
Assert.That(Enumeration.GetName(StringComparison.Ordinal), Is.EqualTo("Ordinal"));
Assert.That(Enumeration.GetName <ULongEnum>(1UL), Is.EqualTo("Two"));
Assert.That(() => Enumeration.GetName <IntEnum>(100), Throws.InstanceOf <InvalidEnumArgumentException>());
Assert.That(Enumeration.GetValues <StringSplitOptions>(), Is.EquivalentTo(
new[] { StringSplitOptions.None, StringSplitOptions.RemoveEmptyEntries }));
Assert.That(Enumeration.GetValue <ULongEnum, ulong>(ULongEnum.Two), Is.EqualTo(1UL));
Assert.That(Enumeration.Cast <ByteEnum>((byte)1), Is.EqualTo(ByteEnum.Two));
StringComparison?value;
Assert.That(Enumeration.TryCast(100, out value), Is.False);
Assert.That(Enumeration.Parse <ActionTargets>("Suite"), Is.EqualTo(ActionTargets.Suite));
Assert.That(() => Enumeration.Parse <ActionTargets>("SUIte", ignoreCase: false),
Throws.InstanceOf <InvalidEnumArgumentException>());
Assert.That(Enumeration.Parse <StringComparison>("4"), Is.EqualTo(StringComparison.Ordinal));
ActionTargets?parsed;
Assert.That(() => Enumeration.TryParse("100", out parsed), Is.False);
Assert.That(Enumeration.TryParse("suiTE", true, out parsed), Is.True);
var fourNotSet = NoZeroFlags.Three;
NoZeroFlags fourSet = fourNotSet.SetFlag(NoZeroFlags.Four);
Assert.That(fourSet.HasFlag(NoZeroFlags.Four), Is.True);
NoZeroFlags fourUnset = fourSet.UnsetFlag(NoZeroFlags.Four);
Assert.That(fourUnset.HasFlag(NoZeroFlags.Four), Is.False);
fourSet = fourUnset.ToggleFlag(NoZeroFlags.Four);
Assert.That(fourSet.HasFlag(NoZeroFlags.Four), Is.True);
fourNotSet = fourSet.ToggleFlag(NoZeroFlags.Four);
Assert.That(fourNotSet.HasFlag(NoZeroFlags.Four), Is.False);
Assert.That(fourSet.GetFlags(), Is.EquivalentTo(new[] { NoZeroFlags.Three, NoZeroFlags.Four }));
}