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from __future__ import absolute_import, division, print_function 

import math 

import unittest 

 

import numpy as np 

from numpy.testing import assert_allclose 

 

import astshim as ast 

from astshim.test import MappingTestCase 

 

 

class TestFrame(MappingTestCase): 

 

def test_FrameBasics(self): 

frame = ast.Frame(2) 

self.assertEqual(frame.className, "Frame") 

self.assertEqual(frame.nIn, 2) 

self.assertEqual(frame.nAxes, 2) 

self.assertEqual(frame.maxAxes, 2) 

self.assertEqual(frame.minAxes, 2) 

self.assertEqual(frame.alignSystem, "Cartesian") 

self.assertEqual(frame.dut1, 0.0) 

self.assertEqual(frame.epoch, 2000.0) 

self.assertEqual(frame.obsAlt, 0.0) 

self.assertEqual(frame.obsLat, "N0:00:00.00") 

self.assertEqual(frame.obsLon, "E0:00:00.00") 

self.assertTrue(frame.permute) 

self.assertFalse(frame.preserveAxes) 

self.assertEqual(frame.system, "Cartesian") 

self.assertEqual(frame.title, "2-d coordinate system") 

self.assertEqual(frame.getDigits(), 7) 

 

for axis in (1, 2): 

self.assertGreater(abs(frame.getBottom(axis)), 1e99) 

self.assertGreater(abs(frame.getTop(axis)), 1e99) 

self.assertGreater(frame.getTop(axis), frame.getBottom(axis)) 

self.assertTrue(frame.getDirection(axis)) 

self.assertEqual(frame.getDigits(axis), 7) 

self.assertEqual(frame.getInternalUnit(axis), "") 

self.assertEqual(frame.getNormUnit(axis), "") 

self.assertEqual(frame.getSymbol(axis), "x{}".format(axis)) 

self.assertEqual(frame.getUnit(axis), "") 

 

self.checkCopy(frame) 

self.checkPersistence(frame) 

 

def test_FrameSetDigits(self): 

frame = ast.Frame(2) 

self.assertEqual(frame.getDigits(), 7) 

for axis in (1, 2): 

self.assertEqual(frame.getDigits(axis), 7) 

 

frame.setDigits(1, 9) 

self.assertEqual(frame.getDigits(), 7) 

self.assertEqual(frame.getDigits(1), 9) 

self.assertEqual(frame.getDigits(2), 7) 

 

frame.setDigits(2, 4) 

self.assertEqual(frame.getDigits(), 7) 

self.assertEqual(frame.getDigits(1), 9) 

self.assertEqual(frame.getDigits(2), 4) 

 

def test_FrameLabels(self): 

frame = ast.Frame(2, "label(1)=a b,label(2)=c d") 

 

self.assertEqual(frame.getLabel(1), "a b") 

self.assertEqual(frame.getLabel(2), "c d") 

frame.setLabel(2, "A new label") 

self.assertEqual(frame.getLabel(2), "A new label") 

frame.clear("Label(2)") 

self.assertEqual(frame.getLabel(2), "Axis 2") 

 

def test_FrameTitle(self): 

frame = ast.Frame(3, "Title=A Title") 

 

self.assertEqual(frame.title, "A Title") 

testtitle = "Test Frame" 

frame.title = testtitle 

frame.clear("Title") 

self.assertEqual(frame.title, "3-d coordinate system") 

 

def test_FrameAngle(self): 

"""Test Frame.angle""" 

frame = ast.Frame(2) 

angle = frame.angle([4, 3], [0, 0], [4, 0]) 

self.assertEqual(angle, math.atan2(3, 4)) 

 

def test_FrameAxis(self): 

"""Test Frame.axAngle, axDistance and axOffset""" 

frame = ast.Frame(2) 

angle = frame.axAngle([0, 0], [4, 3], 1) 

self.assertEqual(angle, -math.atan2(3, 4)) 

distance = frame.axDistance(1, 0, 4) 

self.assertEqual(distance, 4) 

axoffset = frame.axOffset(1, 1, 4) 

self.assertEqual(axoffset, 5) 

 

def test_FrameConvert(self): 

frame = ast.Frame(2) 

nframe = ast.Frame(2) 

fset = frame.convert(nframe) 

self.assertEqual(fset.className, "FrameSet") 

 

# the conversion FrameSet should contain two frames 

# connected by a unit mapping with 2 axes 

self.assertEqual(fset.nFrame, 2) 

self.assertEqual(fset.nIn, 2) 

self.assertEqual(fset.nOut, 2) 

indata = np.array([ 

[1.1, 2.2], 

[-43.5, 1309.31], 

]) 

outdata = fset.applyForward(indata) 

assert_allclose(outdata, indata) 

self.checkRoundTrip(fset, indata) 

 

self.assertIsNone(frame.convert(ast.Frame(3))) 

 

def test_FrameFindFrame(self): 

frame = ast.Frame(2) 

nframe = ast.Frame(2) 

fset = frame.findFrame(nframe) 

self.assertEqual(fset.className, "FrameSet") 

self.assertEqual(fset.nFrame, 2) 

 

# the found FrameSet should contain two frames 

# connected by a unit mapping with 2 axes 

self.assertEqual(fset.nIn, 2) 

self.assertEqual(fset.nOut, 2) 

indata = np.array([ 

[1.1, 2.2], 

[-43.5, 1309.31], 

]) 

outdata = fset.applyForward(indata) 

assert_allclose(outdata, indata) 

self.checkRoundTrip(fset, indata) 

 

self.assertIsNone(frame.findFrame(ast.Frame(3))) 

 

def test_FrameDistance(self): 

frame = ast.Frame(2) 

distance = frame.distance([0, 0], [4, 3]) 

self.assertEqual(distance, 5) 

 

def test_FrameFormat(self): 

frame = ast.Frame(2) 

fmt = frame.format(1, 55.270) 

self.assertEqual(fmt, "55.27") 

 

def test_FrameIntersect(self): 

frame = ast.Frame(2) 

cross = frame.intersect([-1, 1], [1, 1], [0, 0], [2, 2]) 

self.assertAlmostEqual(cross[0], 1.0) 

self.assertAlmostEqual(cross[1], 1.0) 

 

def test_FrameMatchAxes(self): 

frame = ast.Frame(2) 

frame2 = ast.Frame(3) 

axes = frame.matchAxes(frame2) 

self.assertEqual(axes[0], 1) 

self.assertEqual(axes[1], 2) 

self.assertEqual(axes[2], 0) 

 

def test_FrameNorm(self): 

frame = ast.Frame(2) 

# arbitrary, but large enough to wrap if applied to an SphFrame 

coords = [33.5, 223.4] 

ncoords = frame.norm(coords) 

self.assertEqual(ncoords[0], coords[0]) 

 

def test_FrameOffset(self): 

"""Test Frame.offset and Frame.offset2""" 

frame = ast.Frame(2) 

point = frame.offset([0, 0], [4, 3], 10) 

self.assertEqual(point[0], 8) 

self.assertEqual(point[1], 6) 

dp = frame.offset2([0, 0], math.atan2(4, 3), 10) 

self.assertAlmostEqual(dp.point[0], 8) 

self.assertAlmostEqual(dp.point[1], 6) 

 

def test_FrameOver(self): 

frame1 = ast.Frame(2, "label(1)=a, label(2)=b") 

initialNumFrames = frame1.getNObject() # may be >1 when run using pytest 

frame2 = ast.Frame(1, "label(1)=c") 

self.assertEqual(frame1.getNObject(), initialNumFrames + 1) 

cf = frame1.under(frame2) 

self.assertEqual(cf.nAxes, 3) 

self.assertEqual(cf.getLabel(1), "a") 

self.assertEqual(cf.getLabel(2), "b") 

self.assertEqual(cf.getLabel(3), "c") 

 

# check that the contained frames are shallow copies 

self.assertEqual(frame1.getNObject(), initialNumFrames + 1) 

self.assertEqual(frame1.getRefCount(), 2) 

self.assertEqual(frame2.getRefCount(), 2) 

 

def test_FramePerm(self): 

frame = ast.Frame(2) 

frame.permAxes([2, 1]) 

fm = frame.pickAxes([2]) 

self.assertEqual(fm.frame.className, "Frame") 

self.assertEqual(fm.frame.nIn, 1) 

self.assertEqual(fm.mapping.className, "PermMap") 

self.assertEqual(fm.mapping.nIn, 2) 

self.assertEqual(fm.mapping.nOut, 1) 

 

def test_FrameResolve(self): 

frame = ast.Frame(2) 

res = frame.resolve([0, 0], [2, 1], [0, 4]) 

theta = math.atan2(1, 2) 

d1pred = 4 * math.sin(theta) 

d2pred = 4 * math.cos(theta) 

predpoint = [ 

d1pred * math.cos(theta), 

d1pred * math.sin(theta), 

] 

self.assertAlmostEqual(res.d1, d1pred) 

self.assertAlmostEqual(res.d2, d2pred) 

assert_allclose(res.point, predpoint) 

 

def test_FrameUnformat(self): 

frame = ast.Frame(2) 

nrv = frame.unformat(1, "56.4 #") 

self.assertEqual(nrv.nread, 5) 

self.assertEqual(nrv.value, 56.4) 

 

def test_FrameActiveUnit(self): 

"""Test the ActiveUnit property""" 

frame = ast.Frame(2) 

self.assertFalse(frame.activeUnit) 

frame.activeUnit = True 

self.assertTrue(frame.activeUnit) 

 

 

235 ↛ 236line 235 didn't jump to line 236, because the condition on line 235 was never trueif __name__ == "__main__": 

unittest.main()