Increase test coverage

[alexander-held]

The current test coverage is 23%, as evaluated via pytest-cov running Coverage.py. While coverage by itself does not necessarily mean much, it would be useful to try and extend this.

Module	statements	missing	excluded	branches	partial	coverage
madminer/__init__.py	10	0	0	0	0	100%
madminer/analysis/__init__.py	1	0	0	0	0	100%
madminer/analysis/dataanalyzer.py	386	280	0	228	21	23%
madminer/core/__init__.py	1	0	0	0	0	100%
madminer/core/madminer.py	288	189	0	127	9	29%
madminer/delphes/__init__.py	1	0	0	0	0	100%
madminer/delphes/delphes_reader.py	255	223	0	116	0	9%
madminer/fisherinformation/__init__.py	3	0	0	0	0	100%
madminer/fisherinformation/geometry.py	124	104	0	50	0	13%
madminer/fisherinformation/information.py	451	338	0	250	13
madminer/fisherinformation/manipulate.py	38	24	0	18	1	27%
madminer/lhe/__init__.py	1	0	0	0	0	100%
madminer/lhe/lhe_reader.py	208	138	0	84	3	26%
madminer/likelihood/__init__.py	3	0	0	0	0	100%
madminer/likelihood/base.py	62	41	0	14	0	30%
madminer/likelihood/histo.py	191	168	0	117	0	8%
madminer/likelihood/manipulate.py	118	109	0	76	0	5%
madminer/likelihood/neural.py	72	60	0	38	0	13%
madminer/limits/__init__.py	1	0	0	0	0	100%
madminer/limits/asymptotic_limits.py	382	343	0	167	0	7%
madminer/ml/__init__.py	7	0	0	0	0	100%
madminer/ml/base.py	181	105	0	54	9	40%
madminer/ml/double_parameterized_ratio.py	182	158	0	70	0	10%
madminer/ml/ensemble.py	256	229	0	126	0	8%
madminer/ml/likelihood.py	185	159	0	74	0	11%
madminer/ml/lookup.py	28	20	0	12	0	20%
madminer/ml/morphing_aware.py	47	30	0	12	0	36%
madminer/ml/parameterized_ratio.py	185	63	0	70	20	60%
madminer/ml/score.py	178	153	0	64	0	11%
madminer/models/__init__.py	11	0	0	0	0	100%
madminer/models/benchmarks.py	33	11	0	8	0	63%
madminer/models/parameters.py	24	2	0	6	0	93%
madminer/models/readers.py	31	5	0	14	1	78%
madminer/models/systematics.py	37	13	0	18	0	55%
madminer/plotting/__init__.py	5	0	0	0	0	100%
madminer/plotting/distributions.py	245	235	0	166	0	2%
madminer/plotting/fisherinformation.py	205	197	0	126	0	2%
madminer/plotting/limits.py	66	60	0	40	0	6%
madminer/plotting/morphing.py	98	89	0	16	0	8%
madminer/plotting/uncertainties.py	194	185	0	54	0	4%
madminer/sampling/__init__.py	3	0	0	0	0	100%
madminer/sampling/combine.py	68	54	0	38	0	13%
madminer/sampling/parameters.py	17	7	0	2	0	53%
madminer/sampling/sampleaugmenter.py	588	552	0	300	0	4%
madminer/utils/__init__.py	0	0	0	0	0	100%
madminer/utils/histo.py	92	79	0	36	0	12%
madminer/utils/interfaces/__init__.py	0	0	0	0	0	100%
madminer/utils/interfaces/delphes.py	38	33	0	20	0	9%
madminer/utils/interfaces/delphes_root.py	341	316	0	136	0	5%
madminer/utils/interfaces/hdf5.py	411	74	0	219	25	80%
madminer/utils/interfaces/hepmc.py	32	27	0	17	0	10%
madminer/utils/interfaces/lhe.py	582	545	0	306	0	5%
madminer/utils/interfaces/mg.py	160	148	0	84	0	5%
madminer/utils/interfaces/mg_cards.py	160	147	0	78	0	5%
madminer/utils/ml/__init__.py	0	0	0	0	0	100%
madminer/utils/ml/eval.py	126	92	0	80	8	23%
madminer/utils/ml/losses.py	36	5	0	0	0	86%
madminer/utils/ml/models/__init__.py	0	0	0	0	0	100%
madminer/utils/ml/models/base.py	47	26	0	8	0	45%
madminer/utils/ml/models/batch_norm.py	42	30	0	8	0	28%
madminer/utils/ml/models/made.py	140	119	0	28	0	15%
madminer/utils/ml/models/made_mog.py	95	79	0	16	0	16%
madminer/utils/ml/models/maf.py	136	118	0	72	0	11%
madminer/utils/ml/models/maf_mog.py	81	68	0	36	0	13%
madminer/utils/ml/models/masks.py	64	54	0	20	0	12%
madminer/utils/ml/models/ratio.py	201	147	0	92	5	27%
madminer/utils/ml/models/score.py	39	29	0	18	0	21%
madminer/utils/ml/trainer.py	450	142	0	144	23	66%
madminer/utils/ml/utils.py	151	72	0	86	9	46%
madminer/utils/morphing.py	271	73	0	141	30	71%
madminer/utils/particle.py	87	70	0	14	0	25%
madminer/utils/various.py	160	84	0	72	10	41%
Total	9412	6921	0	4286	187	23%