/// <summary>
/// Create a temporary HDF5 file IN MEMORY and return its name and
/// a file handle.
/// </summary>
public static hid_t H5TempFile(ref string fileName,
H5F.libver_t version = H5F.libver_t.LATEST,
bool backing_store = false)
{
hid_t fapl = H5P.create(H5P.FILE_ACCESS);
if (fapl < 0)
{
throw new ApplicationException("H5P.create failed.");
}
if (H5P.set_libver_bounds(fapl, version) < 0)
{
throw new ApplicationException("H5P.set_libver_bounds failed.");
}
// use the core VFD, 64K increments, no backing store
if (H5P.set_fapl_core(fapl, new IntPtr(65536),
(uint)(backing_store ? 1 : 0)) < 0)
{
throw new ApplicationException("H5P.set_fapl_core failed.");
}
fileName = Path.GetTempFileName();
hid_t file = H5F.create(fileName, H5F.ACC_TRUNC, H5P.DEFAULT, fapl);
if (file < 0)
{
throw new ApplicationException("H5F.create failed.");
}
if (H5P.close(fapl) < 0)
{
throw new ApplicationException("H5P.close failed.");
}
return(file);
}
public void CanReadDataset_Chunked_Legacy()
{
var versions = new H5F.libver_t[]
{
H5F.libver_t.EARLIEST,
H5F.libver_t.V18
};
TestUtils.RunForVersions(versions, version =>
{
foreach (var withShuffle in new bool[] { false, true })
{
// Arrange
var filePath = TestUtils.PrepareTestFile(version, fileId => TestUtils.AddChunkedDataset_Legacy(fileId, withShuffle));
// Act
using var root = H5File.OpenReadCore(filePath, deleteOnClose: true);
var parent = root.Group("chunked");
var dataset = parent.Dataset("chunked");
var actual = dataset.Read <int>();
// Assert
Assert.True(actual.SequenceEqual(TestData.MediumData));
}
});
}
public static unsafe void AddHuge(long fileId, ContainerType container, H5F.libver_t version)
{
var length = version switch
{
H5F.libver_t.EARLIEST => 16368UL, // max 64 kb in object header
_ => (ulong)TestData.HugeData.Length,
};
TestUtils.Add(container, fileId, "huge", "huge", H5T.NATIVE_INT32, TestData.HugeData.AsSpan(), length);
}
public static void RunForAllVersions(Action <H5F.libver_t> action)
{
var versions = new H5F.libver_t[]
{
H5F.libver_t.EARLIEST,
H5F.libver_t.V18,
H5F.libver_t.V110
};
foreach (var version in versions)
{
action(version);
}
}
public static unsafe string PrepareTestFile(H5F.libver_t version, Action <long> action)
{
var filePath = Path.GetTempFileName();
long res;
// file
var faplId = H5P.create(H5P.FILE_ACCESS);
res = H5P.set_libver_bounds(faplId, version, version);
var fileId = H5F.create(filePath, H5F.ACC_TRUNC, 0, faplId);
action?.Invoke(fileId);
res = H5F.close(fileId);
return(filePath);
}
