Add test to see whether all Python files can be imported.

scopesim/detector/nghxrg.py

@@ -10,7 +10,7 @@
 # import warnings
 
 import numpy as np
-from scipy.ndimage.interpolation import zoom
+from scipy.ndimage import zoom
 from astropy.io import fits
 from astropy.stats.funcs import median_absolute_deviation as mad
 
@@ -199,7 +199,7 @@
         """
 
         # Configure depending on mode setting
-        if mode is 'pink':
+        if mode == 'pink':
             nstep = 2*self.nstep
             f = self.f2
             p_filter = self.p_filter2

scopesim/tests/test_import_all.py

@@ -0,0 +1,33 @@
+"""Test whether all Python files can be imported."""
+import importlib.util
+import pkgutil
+
+import scopesim
+
+
+def import_submodules(package):
+    """ Import all submodules of a module, recursively, including subpackages
+
+    :param package: package (name or actual module)
+    :type package: str | module
+    :rtype: dict[str, types.ModuleType]
+
+    https://stackoverflow.com/a/25562415
+    """
+    if isinstance(package, str):
+        package = importlib.import_module(package)
+    results = {}
+    for loader, name, is_pkg in pkgutil.walk_packages(package.__path__):
+        full_name = package.__name__ + '.' + name
+        results[full_name] = importlib.import_module(full_name)
+        if is_pkg:
+            results.update(import_submodules(full_name))
+    return results
+
+
+def test_import_all():
+    """Test whether all Python files can be imported.
+
+    This ensures that all files are included in the code coverage.
+    """
+    import_submodules(scopesim)