public void YielderExtensionOfType()
{
bool v = true;
int x = 0;
// ReSharper disable once AssignmentInConditionalExpression
var yielder = Yielder.Repeat(() => ((v = !v)) ? (Base) new A {
Num = x++
} : new B()
{
Str = $"{x++}"
});
var aYielder = yielder.OfType <Base, A>();
Assert.Equal(1, aYielder.Next().Num);
Assert.Equal(3, aYielder.Next().Num);
Assert.Equal(5, aYielder.Next().Num);
Assert.Equal(7, aYielder.Next().Num);
var bYielder = yielder.OfType <Base, B>();
Assert.Equal("8", bYielder.Next().Str);
Assert.Equal("10", bYielder.Next().Str);
Assert.Equal("12", bYielder.Next().Str);
Assert.Equal("14", bYielder.Next().Str);
}
public void YielderExtensionFilter()
{
int x = 1;
var yielder = Yielder.Repeat(() => x += 2);
var filtered = yielder.Filter(v => v % 3 == 0);
Assert.Equal(3, filtered.Next());
Assert.Equal(9, filtered.Next());
Assert.Equal(15, filtered.Next());
Assert.Equal(21, filtered.Next());
}
public void FiniteYielderExtensionFilter()
{
int x = 1;
var yielder = Yielder.Repeat(() => x += 2).Take(4);
var filtered = yielder.Filter(v => v % 3 == 0);
Assert.Equal(3, filtered.Next());
Assert.True(filtered.HasNext());
Assert.Equal(9, filtered.Next());
Assert.False(filtered.HasNext());
Assert.False(filtered.HasNext());
}
public static void EncodeDecodeTest()
{
var str = Yielder.Repeat(() => (char)DefaultRNG.I32.Next(32, 0xd800)).Take(1048576).ToList().Join();
var encoded = new UTF8Encoding(false).GetBytes(str);
Assert.Equal(encoded, str.Encode());
Assert.Equal(encoded, str.Encode(new UTF8Encoding(false)));
Assert.Equal(encoded, str.Encode("utf-8"));
Assert.Equal(str, encoded.Decode());
Assert.Equal(str, encoded.Decode(Encoding.UTF8));
Assert.Equal(str, encoded.Decode("utf-8"));
}
public void FiniteYielderExtensionOfType()
{
bool v = true;
int x = 0;
// ReSharper disable once AssignmentInConditionalExpression
var yielder = Yielder.Repeat(() => ((v = !v)) ? (Base) new A {
Num = x++
} : new B()
{
Str = $"{x++}"
}).Take(8);
var aYielder = yielder.OfType <Base, A>();
Assert.Equal(1, aYielder.Next().Num);
Assert.Equal(3, aYielder.Next().Num);
Assert.Equal(5, aYielder.Next().Num);
Assert.True(aYielder.HasNext());
Assert.Equal(7, aYielder.Next().Num);
Assert.False(aYielder.HasNext());
Assert.False(aYielder.HasNext());
}
public void YielderBase()
{
var yielder = Yielder.Const(7);
Assert.Equal(7, yielder.Next());
Assert.Equal(7, yielder.Next());
Assert.Equal(7, yielder.Next());
Assert.Equal(7, yielder.Next());
int x = 1;
yielder = Yielder.Repeat(() => x *= 2);
Assert.Equal(2, yielder.Next());
Assert.Equal(4, yielder.Next());
Assert.Equal(8, yielder.Next());
Assert.Equal(16, yielder.Next());
yielder = Yielder.Iterate(v => v * 3, 1);
Assert.Equal(3, yielder.Next());
Assert.Equal(9, yielder.Next());
Assert.Equal(27, yielder.Next());
Assert.Equal(81, yielder.Next());
}
