RoundtripJson

class lsst.images.tests.RoundtripJson(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()	Read the JSON file as a dictionary.

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()

Read the JSON file as a dictionary.

Return type:

dict[str, Any]