Manual Testing

viztests/README.md

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+Visual Tests
+============
+
+This is a test suite of manual tests, meant to help with the difficulty of
+thorough automated testing of graphical software.
+
+Run with `python -m viztests`

viztests/__main__.py

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+import ast
+from pathlib import Path
+import subprocess
+import sys
+
+
+def get_docstring(path):
+    tree = ast.parse(path.read_text(), path.name, mode='exec')
+
+    return ast.get_docstring(tree)
+
+
+for script in Path(__file__).resolve().parent.glob('*.py'):
+    if script.name.startswith('_'):
+        continue
+    ds = get_docstring(script)
+    print("=" * len(script.name))
+    print(script.name)
+    print("=" * len(script.name))
+    print("")
+    if ds is not None:
+        print(ds)
+        print("")
+    subprocess.run([sys.executable, str(script)], check=True)

viztests/angles.py

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+"""
+Tests rotation vs Vector angles
+
+The center sprite should always face the orbiting sprite
+"""
+import ppb
+
+ROTATION_RATE = 90
+
+
+class CenterSprite(ppb.BaseSprite):
+    image = ppb.Image('player.png')
+
+    def on_update(self, event, signal):
+        self.rotation += ROTATION_RATE * event.time_delta
+
+
+class OrbitSprite(ppb.BaseSprite):
+    position = ppb.Vector(0, -2)
+    image = ppb.Image('target.png')
+
+    def on_update(self, event, signal):
+        self.position = self.position.rotate(ROTATION_RATE * event.time_delta)
+
+
+def setup(scene):
+    scene.add(CenterSprite())
+    scene.add(OrbitSprite())
+
+
+ppb.run(setup)