public static void EmptyProperty()
{
// Act
Utf8Span span = Utf8Span.Empty;
// Assert
// GetPinnableReference should be 'null' to match behavior of empty ROS<byte>.GetPinnableReference();
Assert.True(span.IsEmpty);
Assert.Equal(IntPtr.Zero, (IntPtr)(void *)Unsafe.AsPointer(ref Unsafe.AsRef(in span.GetPinnableReference())));
Assert.Equal(IntPtr.Zero, (IntPtr)(void *)Unsafe.AsPointer(ref MemoryMarshal.GetReference(span.Bytes)));
Assert.Equal(0, span.Length);
}
public static void Ctor_UnsafeFromByteSpan_NonNullEmptyArray()
{
// Arrange
ReadOnlySpan <byte> original = new byte[0];
// Act
Utf8Span span = Utf8Span.UnsafeCreateWithoutValidation(original);
// Assert
// GetPinnableReference should be 'null' to match behavior of empty ROS<byte>.GetPinnableReference();
Assert.True(span.IsEmpty);
Assert.Equal(IntPtr.Zero, (IntPtr)(void *)Unsafe.AsPointer(ref Unsafe.AsRef(in span.GetPinnableReference())));
Assert.True(Unsafe.AreSame(ref MemoryMarshal.GetReference(original), ref MemoryMarshal.GetReference(span.Bytes)));
Assert.Equal(0, span.Length);
}
public static void Ctor_NullUtf8String()
{
// Arrange
ustring str = null;
// Act
Utf8Span span = new Utf8Span(str);
// Assert
// GetPinnableReference should be 'null' to match behavior of empty ROS<byte>.GetPinnableReference();
Assert.True(span.IsEmpty);
Assert.Equal(IntPtr.Zero, (IntPtr)(void *)Unsafe.AsPointer(ref Unsafe.AsRef(in span.GetPinnableReference())));
Assert.Equal(IntPtr.Zero, (IntPtr)(void *)Unsafe.AsPointer(ref MemoryMarshal.GetReference(span.Bytes)));
Assert.Equal(0, span.Length);
}
public static void Ctor_UnsafeFromByteSpan_NonEmpty()
{
// Arrange
ReadOnlySpan <byte> original = new byte[] { 1, 2, 3, 4, 5 };
// Act
Utf8Span span = Utf8Span.UnsafeCreateWithoutValidation(original);
// Assert
Assert.False(span.IsEmpty);
Assert.True(Unsafe.AreSame(ref Unsafe.AsRef(in original.GetPinnableReference()), ref Unsafe.AsRef(in span.GetPinnableReference())));
Assert.True(Unsafe.AreSame(ref Unsafe.AsRef(in original.GetPinnableReference()), ref MemoryMarshal.GetReference(span.Bytes)));
Assert.Equal(5, span.Length);
}
public static void Ctor_NonEmptyUtf8String()
{
// Arrange
ustring str = u8("Hello!");
// Act
Utf8Span span = new Utf8Span(str);
// Assert
Assert.False(span.IsEmpty);
Assert.True(Unsafe.AreSame(ref Unsafe.AsRef(in str.GetPinnableReference()), ref Unsafe.AsRef(in span.GetPinnableReference())));
Assert.True(Unsafe.AreSame(ref Unsafe.AsRef(in str.GetPinnableReference()), ref MemoryMarshal.GetReference(span.Bytes)));
Assert.Equal(6, span.Length);
}
