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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| # Licensed under a 3-clause BSD style license - see LICENSE.rst | ||
| # -*- coding: utf-8 -*- | ||
| """Test desitarget.targets targetid encode/decode | ||
| """ | ||
| import unittest | ||
| import numpy as np | ||
|
|
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| from desitarget.targets import ( | ||
| encode_negative_targetid, decode_negative_targetid ) | ||
|
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| class TestTargetID(unittest.TestCase): | ||
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| @classmethod | ||
| def setUp(self): | ||
| pass | ||
|
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| def test_encode_negative_targetid(self): | ||
| """ | ||
| Test encoding ra,dec -> negative TARGETID | ||
| """ | ||
| #- Edge cases with scalars; should alsways be negative | ||
| for ra in (0,90,180,360): | ||
| for dec in (-90, 0, +90): | ||
| for group in (1,7,15): | ||
| t = encode_negative_targetid(ra,dec,group) | ||
| msg = f'targetid({ra},{dec},{group})' | ||
| self.assertLess(t, 0, msg) | ||
| self.assertTrue(np.isscalar(t), msg) | ||
|
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||
| #- Also works with lists and arrays | ||
| ra = (0, 10, 20) | ||
| dec = (-10, 0, 89.9) | ||
| t = encode_negative_targetid(ra, dec) | ||
| self.assertEqual(len(t), len(ra)) | ||
| self.assertTrue(np.all(t<0)) | ||
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| t = encode_negative_targetid(np.asarray(ra), np.asarray(dec)) | ||
| self.assertEqual(len(t), len(ra)) | ||
| self.assertTrue(np.all(t<0)) | ||
|
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| #- Test invalid group numbers | ||
| with self.assertRaises(ValueError): | ||
| encode_negative_targetid(0,0,0) | ||
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| with self.assertRaises(ValueError): | ||
| encode_negative_targetid(0,0,16) | ||
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| with self.assertRaises(ValueError): | ||
| encode_negative_targetid(0,0,-1) | ||
|
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| #- 2 milliarcsec differences -> different TARGETID | ||
| ra, dec = 10.0, 0.0 | ||
| delta = 2.0/(3600*1000) | ||
|
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| t1 = encode_negative_targetid(ra,dec) | ||
| t2 = encode_negative_targetid(ra,dec+delta) | ||
| t3 = encode_negative_targetid(ra,dec-delta) | ||
| t4 = encode_negative_targetid(ra+delta,dec) | ||
| t5 = encode_negative_targetid(ra-delta,dec) | ||
| self.assertNotEqual(t1, t2) | ||
| self.assertNotEqual(t1, t3) | ||
| self.assertNotEqual(t1, t4) | ||
| self.assertNotEqual(t1, t5) | ||
| self.assertNotEqual(t2, t3) | ||
| self.assertNotEqual(t2, t4) | ||
| self.assertNotEqual(t2, t5) | ||
| self.assertNotEqual(t3, t4) | ||
| self.assertNotEqual(t3, t5) | ||
| self.assertNotEqual(t4, t5) | ||
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| def test_decode_negative_targetid(self): | ||
| """test negative targetid encoding -> decoding round trip""" | ||
|
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| #---- roundtrip accurate to at least 2 milliarcsec (without cos(dec)) | ||
| n = 1000 | ||
| ra = np.random.uniform(0, 360, n) | ||
| dec = np.random.uniform(-90, 90, n) | ||
| group = 5 | ||
|
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||
| #- include corner cases | ||
| ra = np.concatenate( (ra, [0,0,0, 360,360,360]) ) | ||
| dec = np.concatenate( (dec, [-90,0,90, -90,0,90]) ) | ||
|
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| targetids = encode_negative_targetid(ra, dec, group) | ||
| ra1, dec1, group1 = decode_negative_targetid(targetids) | ||
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| delta = 2.0/(3600*1000) | ||
| self.assertTrue(np.all(np.abs(ra-ra1) < delta)) | ||
| self.assertTrue(np.all(np.abs(dec-dec1) < delta)) | ||
| self.assertTrue(np.all(group1 == group)) | ||
|
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| #- check group roundtrip, and scalar inputs | ||
| ra, dec = 20.1, -16.3333 | ||
| for group in range(1,16): | ||
| targetid = encode_negative_targetid(ra, dec, group) | ||
| ra1, dec1, group1 = decode_negative_targetid(targetid) | ||
| self.assertEqual(group1, group) | ||
| self.assertLess(np.abs(ra1-ra), delta) | ||
| self.assertLess(np.abs(dec1-dec), delta) | ||
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| if __name__ == '__main__': | ||
| unittest.main() | ||
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| def test_suite(): | ||
| """Allows testing of only this module with the command: | ||
| python setup.py test -m desitarget.test.test_geomask | ||
| """ | ||
| return unittest.defaultTestLoader.loadTestsFromName(__name__) |