simulator: test_qa: Add some simply QA tests for app screenshots

Add tests to make sure every app has a screenshot... and fix the
problems picked up by the new tests!

Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>

README.rst

@@ -132,7 +132,7 @@ PineTime:
    :width: 233
 
 Screenshots of the built in applications running on the wasp-os
-simulator (the "blank" screen is the torch application):
+simulator:
 
 .. image:: res/Bootloader.png
    :alt: Bootloader splash screen overlaid on the simulator watch art
@@ -158,22 +158,27 @@ simulator (the "blank" screen is the torch application):
    :alt: Application launcher running on the wasp-os simulator
    :width: 179
 
-.. image:: res/SelfTestApp.png
-   :alt: Self test application running a rendering benchmark on the simulator
-   :width: 179
-
 .. image:: res/SettingsApp.png
    :alt: Settings application running on the wasp-os simulator
    :width: 179
 
+.. image:: res/SoftwareApp.png
+   :alt: Software selection app running on the wasp-os simulator
+   :width: 179
+
+
+wasp-os also contains a library of additional applications for you to choose.
+These are disabled by default but can be easily enabled using the Software
+application (and the "blank" white screen is a torch application):
+
+.. image:: res/SelfTestApp.png
+   :alt: Self test application running a rendering benchmark on the simulator
+   :width: 179
+
 .. image:: res/TorchApp.png
    :alt: Torch application running on the wasp-os simulator
    :width: 179
 
-wasp-os also contains a library of additional applications for you to choose.
-These are disabled by default but can be easily enabled by adding them
-using one of the techniques is the Application Writer's guide.
-
 .. image:: res/ChronoApp.png
    :alt: Analogue clock application running in the wasp-os simulator
    :width: 179
@@ -190,6 +195,10 @@ using one of the techniques is the Application Writer's guide.
    :alt: Game of Life running in the wasp-os simulator
    :width: 179
 
+.. image:: res/AlarmApp.png
+   :alt: Alarm clock application running in the wasp-os simulator
+   :width: 179
+
 .. image:: res/MusicApp.png
    :alt: Music Player running in the wasp-os simulator
    :width: 179

wasp/boards/simulator/test_qa.py

@@ -0,0 +1,20 @@
+import pytest
+import wasp
+import os
+
+EXCLUDE = ('Notifications', 'Template', 'Demo')
+
+def test_screenshot(constructor):
+    if constructor.NAME in EXCLUDE:
+        return
+    fname = f'res/{constructor.NAME}App.png'.replace(' ', '')
+    assert os.path.exists(fname)
+
+def test_screenshot_README(constructor):
+    if constructor.NAME in EXCLUDE:
+        return
+    fname = f'res/{constructor.NAME}App.png'.replace(' ', '')
+    
+    with open('README.rst') as f:
+        readme = f.read()
+    assert fname in readme