dedicated test and file

[burnout87]

No description provided.

[burnout87]

the test

nb2workflow/tests/test_nbadapter.py

Lines 203 to 210 in 2f8a0ba

	def test_denumpyfy_mosaic_fits():
	from oda_api.data_products import NumpyDataProduct, ImageDataProduct
	mosaic_prod = NumpyDataProduct.from_fits_file(
	os.path.join(os.path.dirname(__file__), 'test_data/clean_mosaic_sognificance.fits.gz'), name="Graphic image")
	mosaic_prod_dumped = json.dumps(denumpyfy(mosaic_prod), cls=CustomJSONEncoder)
	prod_image_decoded = ImageDataProduct.decode(mosaic_prod_dumped)

reproduces the issue