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# 

# LSST Data Management System 

# 

# This product includes software developed by the 

# LSST Project (http://www.lsst.org/). 

# 

# See COPYRIGHT file at the top of the source tree. 

# 

# This program is free software: you can redistribute it and/or modify 

# it under the terms of the GNU General Public License as published by 

# the Free Software Foundation, either version 3 of the License, or 

# (at your option) any later version. 

# 

# This program is distributed in the hope that it will be useful, 

# but WITHOUT ANY WARRANTY; without even the implied warranty of 

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

# GNU General Public License for more details. 

# 

# You should have received a copy of the LSST License Statement and 

# the GNU General Public License along with this program. If not, 

# see <https://www.lsstcorp.org/LegalNotices/>. 

# 

 

import unittest 

 

import astropy.units as u 

from astropy.tests.helper import quantity_allclose 

 

from lsst.utils.tests import TestCase 

from lsst.verify import Measurement, Metric, Name, Blob, BlobSet, Datum 

 

 

class MeasurementTestCase(TestCase): 

"""Test lsst.verify.measurment.Measurement class.""" 

 

def setUp(self): 

self.pa1 = Metric( 

'validate_drp.PA1', 

"The maximum rms of the unresolved source magnitude distribution " 

"around the mean value (repeatability).", 

'mmag', 

tags=['photometric', 'LPM-17'], 

reference_doc='LPM-17', 

reference_url='http://ls.st/lpm-17', 

reference_page=21) 

 

self.blob1 = Blob('Blob1') 

self.blob1['datum1'] = Datum(5 * u.arcsec, 'Datum 1') 

self.blob1['datum2'] = Datum(28. * u.mag, 'Datum 2') 

 

self.blob2 = Blob('Blob2') 

self.blob2['datumN'] = Datum(11 * u.dimensionless_unscaled, 'Count') 

 

def test_PA1_measurement_with_metric(self): 

"""Standard metric with a given Metric instance.""" 

measurement = Measurement(self.pa1, 0.002 * u.mag, blobs=[self.blob1], 

notes={'filter_name': 'r'}) 

measurement.link_blob(self.blob2) 

 

measurement2 = Measurement(self.pa1, 0.002 * u.mag) 

 

self.assertTrue(quantity_allclose(measurement.quantity, 0.002 * u.mag)) 

self.assertIsInstance(measurement.metric_name, Name) 

self.assertEqual(measurement.metric_name, Name('validate_drp.PA1')) 

self.assertEqual(measurement.metric, self.pa1) 

self.assertNotEqual(measurement.identifier, measurement2.identifier) 

 

# Test blob access 

self.assertIn('Blob1', measurement.blobs) 

self.assertIn('Blob2', measurement.blobs) 

 

# Test Datum representation 

datum = measurement.datum 

self.assertTrue(quantity_allclose(datum.quantity, 0.002 * u.mag)) 

self.assertEqual(datum.label, str(self.pa1.name)) 

self.assertEqual(datum.description, str(self.pa1.description)) 

 

# Test notes (MeasurementNotes) 

self.assertEqual(measurement.notes['filter_name'], 'r') 

# Add a note 

measurement.notes['camera'] = 'MegaCam' 

self.assertEqual(measurement.notes['camera'], 'MegaCam') 

self.assertEqual(len(measurement.notes), 2) 

self.assertIn('camera', measurement.notes) 

self.assertIn('filter_name', measurement.notes) 

# Prefixed keys 

self.assertIn('validate_drp.PA1.camera', measurement.notes) 

# test iteration 

iterkeys = set([key for key in measurement.notes]) 

self.assertEqual(len(iterkeys), 2) 

self.assertEqual(set(iterkeys), set(measurement.notes.keys())) 

itemkeys = set() 

for key, value in measurement.notes.items(): 

self.assertEqual(measurement.notes[key], value) 

itemkeys.add(key) 

self.assertEqual(itemkeys, iterkeys) 

# Test update 

measurement.notes.update({'photometric': True, 'facility': 'CFHT'}) 

self.assertIn('photometric', measurement.notes) 

# Test delete 

del measurement.notes['photometric'] 

self.assertNotIn('photometric', measurement.notes) 

 

# Test serialization 

json_doc = measurement.json 

# Units should be cast to those of the metric 

self.assertEqual(json_doc['unit'], 'mmag') 

self.assertFloatsAlmostEqual(json_doc['value'], 2.0) 

self.assertEqual(json_doc['identifier'], measurement.identifier) 

self.assertIsInstance(json_doc['blob_refs'], list) 

self.assertIn(self.blob1.identifier, json_doc['blob_refs']) 

self.assertIn(self.blob2.identifier, json_doc['blob_refs']) 

# No extras, so should not be serialized 

self.assertNotIn(measurement.extras.identifier, json_doc['blob_refs']) 

 

# Test deserialization 

new_measurement = Measurement.deserialize( 

blobs=BlobSet([self.blob1, self.blob2]), 

**json_doc) 

# shim in original notes; normally these are deserialized via the 

# Job object. 

new_measurement.notes.update(measurement.notes) 

self.assertEqual(measurement, new_measurement) 

self.assertIn('Blob1', measurement.blobs) 

self.assertIn('Blob2', measurement.blobs) 

 

def test_PA1_measurement_without_metric(self): 

"""Test a measurement without a Metric instance.""" 

measurement = Measurement('validate_drp.PA1', 0.002 * u.mag) 

 

self.assertIsInstance(measurement.metric_name, Name) 

self.assertEqual(measurement.metric_name, Name('validate_drp.PA1')) 

self.assertIsNone(measurement.metric) 

 

json_doc = measurement.json 

# Units are not converted 

self.assertEqual(json_doc['unit'], 'mag') 

self.assertFloatsAlmostEqual(json_doc['value'], 0.002) 

 

new_measurement = Measurement.deserialize(**json_doc) 

self.assertEqual(measurement, new_measurement) 

 

def test_PA1_deferred_metric(self): 

"""Test a measurement when the Metric instance is added later.""" 

measurement = Measurement('PA1', 0.002 * u.mag) 

 

self.assertIsNone(measurement.metric) 

self.assertEqual(measurement.metric_name, Name(metric='PA1')) 

 

# Try adding in a metric with the wrong units to existing quantity 

other_metric = Metric('testing.other', 'Incompatible units', 'arcsec') 

with self.assertRaises(TypeError): 

measurement.metric = other_metric 

 

# Add metric in; the name should also update 

measurement.metric = self.pa1 

self.assertEqual(measurement.metric, self.pa1) 

self.assertEqual(measurement.metric_name, self.pa1.name) 

 

def test_PA1_deferred_quantity(self): 

"""Test a measurement where the quantity is added later.""" 

measurement = Measurement(self.pa1) 

json_doc = measurement.json 

self.assertIsNone(json_doc['unit']) 

self.assertIsNone(json_doc['value']) 

 

with self.assertRaises(TypeError): 

# wrong units 

measurement.quantity = 5 * u.arcsec 

 

measurement.quantity = 5 * u.mmag 

quantity_allclose(measurement.quantity, 5 * u.mmag) 

 

def test_creation_with_extras(self): 

"""Test creating a measurement with an extra.""" 

measurement = Measurement( 

self.pa1, 5. * u.mmag, 

extras={'extra1': Datum(10. * u.arcmin, 'Extra 1')}) 

 

self.assertIn(str(self.pa1.name), measurement.blobs) 

self.assertIn('extra1', measurement.extras) 

 

json_doc = measurement.json 

self.assertIn(measurement.extras.identifier, json_doc['blob_refs']) 

 

blobs = BlobSet([b for k, b in measurement.blobs.items()]) 

new_measurement = Measurement.deserialize(blobs=blobs, **json_doc) 

self.assertIn('extra1', new_measurement.extras) 

self.assertEqual(measurement, new_measurement) 

 

def test_deferred_extras(self): 

"""Test adding extras to an existing measurement.""" 

measurement = Measurement(self.pa1, 5. * u.mmag) 

 

self.assertIn(str(self.pa1.name), measurement.blobs) 

 

measurement.extras['extra1'] = Datum(10. * u.arcmin, 'Extra 1') 

self.assertIn('extra1', measurement.extras) 

 

def test_quantity_coercion(self): 

# strings can't be changed into a Quantity 

with self.assertRaises(TypeError): 

Measurement('test_metric', quantity='hello') 

# objects can't be a Quantity 

with self.assertRaises(TypeError): 

Measurement('test_metric', quantity=int) 

m = Measurement('test_metric', quantity=5) 

self.assertEqual(m.quantity, 5) 

m = Measurement('test_metric', quantity=5.1) 

self.assertEqual(m.quantity, 5.1) 

 

def test_str(self): 

metric = 'test.cmodel_mag' 

value = 1235 * u.mag 

m = Measurement(metric, value) 

self.assertEqual(str(m), "test.cmodel_mag: 1235.0 mag") 

 

 

219 ↛ 220line 219 didn't jump to line 220, because the condition on line 219 was never trueif __name__ == "__main__": 

unittest.main()