Add test for package integrity

conda/opencv/meta.yaml

@@ -41,7 +41,7 @@ source:
     sha256: 78884f64b564a3b06dc6ee731ed33b60c6d8cd864cea07f21d94ba0f90c7b310  # [unix]
 
 build:
-  number: 0
+  number: 1
   string: py{{ PY_VER_MAJOR }}{{ PY_VER_MINOR }}_{{ PKG_BUILDNUM }}
   run_exports:
     # https://abi-laboratory.pro/index.php?view=timeline&l=opencv
@@ -175,6 +175,9 @@ outputs:
       run:
         - {{ pin_subpackage('libopencv', exact=True) }}
         - {{ pin_subpackage('py-opencv', exact=True) }}
+        - {{ pin_compatible('setuptools') }}
+    test:
+      script: run_test_opencv.py
 
   - name: py-opencv
     build:

conda/opencv/run_test_opencv.py

+import sys
+
+# couple of imports to see if packages are working
+import cv2
+import pkg_resources
+
+
+def test_opencv():
+    import cv2
+    
+    print("opencv version: ", cv2.__version__)
+
+
+def _check_package(name, pyname=None):
+    """Checks if a Python package can be `require()`'d"""
+
+    pyname = pyname or name
+    print(f"Checking Python setuptools integrity for {name} (pyname: {pyname})")
+    pkg_resources.require(pyname)
+
+
+def test_setuptools_integrity():
+
+    _check_package('opencv', 'cv2')
+
+
+# test if opencv installation is sane
+test_opencv()
+test_setuptools_integrity()