RoundtripFits

class lsst.images.tests.RoundtripFits(original, storage_class=None, recipe=None, **kwargs)

Bases: RoundtripBase, Generic

Parameters:

• original (TypeVar(T))

• storage_class (str | None, default: None)

• recipe (str | None, default: None)

• kwargs (Any)

Attributes Summary

filename	The name of the file the object was written to.
serialized	The serialization model for this object (serialization.ArchiveTree).

Methods Summary

get([component, storageClass])	Perform a partial read.
inspect()	Open the FITS file with Astropy.

Attributes Documentation

filename

The name of the file the object was written to.

serialized

The serialization model for this object (serialization.ArchiveTree).

Methods Documentation

get(component=None, storageClass=None, **kwargs)

Perform a partial read.

Parameters:

• component (str | None, default: None) – Component to read instead of the main object. This requires the roundtrip to use a butler; pytest.skip is called otherwise. Place calls to this method in a dedicated test function that contains only component-read assertions, so the skip does not suppress unrelated always-run assertions in other test functions.

• storageClass (str | None, default: None) – Override storage class name to affect the type returned by the get. Only used if a butler is active.

• **kwargs (Any) – Keyword arguments either passed directly to read_archive or used as parameters for a get.

Returns:

Result of the partial read.

Return type:

object

inspect()

Open the FITS file with Astropy.

Return type:

HDUList