use_libwoden

This is a collection of modules that interact with the C/GPU code via ctypes. Much of the code here defined ctypes structures classes that are equivalent to a C struct. This allows us to pass data back and forth between Python and C. Much of the functionality in wodenpy.use_libwoden is tested by other unit tests that use the aforementioned classes. The tests here attempt to fill in any gaps.

test_check_for_everybeam.py

check_for_everybeam interrogates libwoden_double.so to see if it was compiled with the HAVE_EVERBEAM flag. This lets wodenpy know if it can call EveryBeam functions or not. Test by inputting two different test dynamic libraries, one with the flag and one without, and checking the output.

test_convert_woden_settings_to_ctypes.py

woden_settings.convert_woden_settings_to_ctypes takes a filled Woden_Settings_Python class, and copies it across into an equivalent Woden_Settings_Double or Woden_Settings_Float ctypes class. Test by creating a Woden_Settings_Python class, filling it with some values, and then calling the function. We then pass the ctypes class to a C function that writes the contents to a text file. We then read the text file back in and compare to the original Woden_Settings_Python class. Test with various settings to check different combinations of settings are copied across correctly.

test_create_sbf.py

This tests that the shapelet basis function array sbf is created correctly. Test by simply by calling the function and sampling at 20 random array indexes, and comparing to stored expected values.

test_fill_woden_settings_python.py

Tests woden_settings.fill_woden_settings_python, which populates a Woden_Settings_Python class. The function takes in arguments directly from argparse, so test by inputting a number of fake argument tests. Whack in many many combinations of arguments.

test_make_skymodel_structs.py

This is a very basic test. make_skymodel_structs creates a ctypes struct that is used to pass a sky model to the C code. We test by creating an empty ctypes Source_Catalogue sky model, filling in the RA values, passing that sky model across to some C code which writes the RA values to a text file. We then read the text file back in and compare to the original RA values. This function is used more in other integration tests, but this test should probably be expanded.

test_setup_lsts_and_phase_centre.py

This populates the LST values in a woden_settings instance. Test by generating a woden_settings instance, and calling with and without precession set. Compare to a set of expected values.