[testapp] Let's test numpy, matplotlib and Pillow

via an apk generated with gh-actions

Notes:
  - this way the reviewers can see how the `on device unit test app`
    behaves when some test generates an image (Pillow case) or give us an error (matplotlib)
  - we test numpy, because matplotlib depends on it, so we already
    must built it, so...why not test it? :)
  - we must add a patch to fix `cppy` install when building kiwisolver
  - and we make sure that some test app built with gh-actions will
    success (in case that python2 built fails...)
  - these changes will be reverted in the next commit

Author: opacam

.github/workflows/push.yml

@@ -49,6 +49,7 @@ jobs:
       matrix:
         build-arch: ['arm64-v8a', 'armeabi-v7a', 'x86_64']
         python-version: ['python2', 'python3']
+      fail-fast: false
     steps:
     - name: Checkout python-for-android
       uses: actions/checkout@v1

pythonforandroid/recipes/kiwisolver/__init__.py

@@ -6,6 +6,7 @@ class KiwiSolverRecipe(CppCompiledComponentsPythonRecipe):
     version = '0.1.3'
     url = 'https://github.com/nucleic/kiwi/archive/master.zip'
     depends = ['setuptools']
+    patches = ['fix_cppy.patch']
 
 
 recipe = KiwiSolverRecipe()

pythonforandroid/recipes/kiwisolver/fix_cppy.patch

@@ -0,0 +1,10 @@
+--- kiwi-15b7bf0de7e9d29b574d491b153c169155506394/setup.py.orig	2019-12-02 19:20:52.000000000 +0100
++++ kiwi-15b7bf0de7e9d29b574d491b153c169155506394/setup.py	2019-12-30 00:50:57.849212755 +0100
+@@ -76,6 +76,7 @@ setup(
+       ],
+     python_requires='>=3.5',
+     setup_requires=['cppy'],
++	dependency_links=['http://github.com/nucleic/cppy/tarball/4fd117f#egg=cppy'],
+     ext_modules=ext_modules,
+     cmdclass={'build_ext': BuildExt},
+ )

testapps/on_device_unit_tests/setup_test_app.py

@@ -39,7 +39,7 @@
     'apk':
         {
             'requirements':
-                'sqlite3,libffi,openssl,pyjnius,kivy,python3,requests',
+                'sqlite3,libffi,openssl,pyjnius,kivy,python3,requests,numpy,Pillow,matplotlib',
             'android-api': 27,
             'ndk-api': 21,
             'dist-name': 'bdist_test_app_unittests',