add unittest for focal plane

ObservationSim/Instrument/FocalPlane.py

 import galsim
 import numpy as np
 
+
 class FocalPlane(object):
-    def __init__(self, config=None, chip_list=None, survey_type='Photometric', bad_chips=None):
+    def __init__(self, chip_list=None, survey_type='Photometric', bad_chips=None):
         """Get the focal plane layout
         """
         self.nchips = 42
@@ -14,7 +15,7 @@ class FocalPlane(object):
             self.bad_chips = bad_chips
             for chip_id in bad_chips:
                 self.ignore_chips.append(chip_id)
-        
+
         if chip_list is not None:
             for i in range(42):
                 if not (i+1 in chip_list):
@@ -39,25 +40,25 @@ class FocalPlane(object):
             for i in range(1, 31):
                 self.ignore_chips.append(i)
 
-        if config is not None:
-            self.nchip_x    = config["nchip_x"]
-            self.nchip_y    = config["nchip_y"]
-            self.npix_tot_x = config["npix_tot_x"]
-            self.npix_tot_y = config["npix_tot_y"]
-            self.npix_gap_x = config["npix_gap_x"]
-            self.npix_gap_y = config["npix_gap_y"]
-            if "chipLabelIDs" in config:
-                self.chipLabelIDs = config["chipLabelIDs"]
-            if "bad_chips" in config:
-                self.bad_chips = config["bad_chips"]
-        else:
-            self.nchip_x = 6
-            self.nchip_y = 5
-            self.npix_tot_x = 59516
-            self.npix_tot_y = 49752
-            self.npix_gap_x = (534, 1309)
-            self.npix_gap_y = 898
-        
+        # if config is not None:
+        #     self.nchip_x    = config["nchip_x"]
+        #     self.nchip_y    = config["nchip_y"]
+        #     self.npix_tot_x = config["npix_tot_x"]
+        #     self.npix_tot_y = config["npix_tot_y"]
+        #     self.npix_gap_x = config["npix_gap_x"]
+        #     self.npix_gap_y = config["npix_gap_y"]
+        #     if "chipLabelIDs" in config:
+        #         self.chipLabelIDs = config["chipLabelIDs"]
+        #     if "bad_chips" in config:
+        #         self.bad_chips = config["bad_chips"]
+        # else:
+        self.nchip_x = 6
+        self.nchip_y = 5
+        self.npix_tot_x = 59516
+        self.npix_tot_y = 49752
+        self.npix_gap_x = (534, 1309)
+        self.npix_gap_y = 898
+
         self._getCenter()
 
     def _getCenter(self):
@@ -65,7 +66,7 @@ class FocalPlane(object):
         self.cen_pix_y = 0
 
     def getChipLabel(self, chipID):
-        return str("0%d"%chipID)[-2:]
+        return str("0%d" % chipID)[-2:]
 
     def isBadChip(self, chipID):
         """Check if chip #(chipID) on the focal plane is bad or not
@@ -89,7 +90,8 @@ class FocalPlane(object):
             WCS of the focal plane
         """
         if logger is not None:
-            logger.info("    Construct the wcs of the entire image mosaic using Gnomonic/TAN projection")
+            logger.info(
+                "    Construct the wcs of the entire image mosaic using Gnomonic/TAN projection")
         if (xcen == None) or (ycen == None):
             xcen = self.cen_pix_x
             ycen = self.cen_pix_y
@@ -98,13 +100,14 @@ class FocalPlane(object):
         # dvdx =  -np.sin(img_rot.rad) * pix_scale
         # dvdy =  +np.cos(img_rot.rad) * pix_scale
 
-        dudx =  -np.cos(img_rot.rad) * pix_scale
-        dudy =  +np.sin(img_rot.rad) * pix_scale
-        dvdx =  -np.sin(img_rot.rad) * pix_scale
-        dvdy =  -np.cos(img_rot.rad) * pix_scale
-        
+        dudx = -np.cos(img_rot.rad) * pix_scale
+        dudy = +np.sin(img_rot.rad) * pix_scale
+        dvdx = -np.sin(img_rot.rad) * pix_scale
+        dvdy = -np.cos(img_rot.rad) * pix_scale
+
         moscen = galsim.PositionD(x=xcen, y=ycen)
-        sky_center = galsim.CelestialCoord(ra=ra*galsim.degrees, dec=dec*galsim.degrees)
+        sky_center = galsim.CelestialCoord(
+            ra=ra*galsim.degrees, dec=dec*galsim.degrees)
         affine = galsim.AffineTransform(dudx, dudy, dvdx, dvdy, origin=moscen)
         WCS = galsim.TanWCS(affine, sky_center, units=galsim.arcsec)
 
@@ -115,10 +118,10 @@ class FocalPlane(object):
         The sky coverage of an area
         """
         r2d = 180.0/np.pi
-        s1 = wcs.toWorld(galsim.PositionD(x0,y0))
-        s2 = wcs.toWorld(galsim.PositionD(x0,y1))
-        s3 = wcs.toWorld(galsim.PositionD(x1,y0))
-        s4 = wcs.toWorld(galsim.PositionD(x1,y1))
+        s1 = wcs.toWorld(galsim.PositionD(x0, y0))
+        s2 = wcs.toWorld(galsim.PositionD(x0, y1))
+        s3 = wcs.toWorld(galsim.PositionD(x1, y0))
+        s4 = wcs.toWorld(galsim.PositionD(x1, y1))
         ra = [s1.ra.rad*r2d, s2.ra.rad*r2d, s3.ra.rad*r2d, s4.ra.rad*r2d]
         dec = [s1.dec.rad*r2d, s2.dec.rad*r2d, s3.dec.rad*r2d, s4.dec.rad*r2d]
 

tests/test_focalplane.py

+import unittest
+import os
+import galsim
+from ObservationSim.Instrument import FocalPlane, Chip
+
+
+class TestFocalPlane(unittest.TestCase):
+    def __init__(self, methodName='runTest'):
+        super(TestFocalPlane, self).__init__(methodName)
+        self.dataPath = os.path.join(
+            os.getenv('UNIT_TEST_DATA_ROOT'), 'csst_msc_sim/csst_fz_msc')
+        self.focal_plane = FocalPlane(
+            chip_list=['8'])
+        self.assertTrue(self.focal_plane.cen_pix_x == 0)
+        self.assertTrue(self.focal_plane.cen_pix_y == 0)
+        test_focal_plane_phot = FocalPlane(survey_type='Photometric')
+        test_focal_plane_spec = FocalPlane(survey_type='Spectroscopic')
+        test_focal_plane_FGS = FocalPlane(survey_type='FGS')
+        test_focal_plane_bad_chips = FocalPlane(bad_chips=["1"])
+
+    def test_fp_method(self):
+        wcs = self.focal_plane.getTanWCS(
+            192.8595, 0., 0.*galsim.degrees, 0.0074)
+        sky_coverage = self.focal_plane.getSkyCoverage(
+            wcs, x0=-1, x1=0, y0=-1, y1=0)
+        print(sky_coverage.area())
+        self.assertTrue(abs(sky_coverage.area() - 0.0074**2/(3600.**2)) < 1e13)
+
+
+if __name__ == '__main_':
+    unittest.main()