Add mpremote tests for scaling, roll, and point

Made-with: Cursor

pico/test/test_roll.py

@@ -0,0 +1,118 @@
+"""
+On-device test for the Roll pattern using mpremote.
+
+Usage (from pico/ dir or project root with adjusted paths):
+
+    mpremote connect <device> cp src/*.py :
+    mpremote connect <device> cp src/patterns/*.py :patterns
+    mpremote connect <device> cp lib/*.py :
+    mpremote connect <device> cp test/test_roll.py :
+    mpremote connect <device> run test_roll.py
+
+This script:
+  - Instantiates Presets
+  - Creates a few in-memory roll presets with different parameters
+  - Runs each one for a short time so you can visually compare behaviour
+"""
+
+import utime
+from presets import Presets, Preset
+
+
+def make_roll_preset(name, color1, color2, n1=0, n2=0, n3=0, n4=0, delay_ms=50, brightness=255):
+    """Helper to build a Preset dict for the roll pattern."""
+    data = {
+        "p": "roll",
+        "c": [color1, color2],
+        "b": brightness,
+        "d": delay_ms,
+        "n1": n1,
+        "n2": n2,
+        "n3": n3,
+        "n4": n4,
+        "a": True,  # animated
+    }
+    return name, Preset(data)
+
+
+def run_preset(presets, name, preset_obj, duration_ms):
+    """Run a given roll preset for duration_ms using the existing tick loop."""
+    presets.presets[name] = preset_obj
+    presets.select(name)
+
+    start = utime.ticks_ms()
+    while utime.ticks_diff(utime.ticks_ms(), start) < duration_ms:
+        presets.tick()
+
+
+def main():
+    presets = Presets()
+    presets.load()
+
+    print("Starting roll pattern test...")
+
+    ref_len = presets.strip_length(0)
+    # Use some margins based on strip length to show different bands.
+    quarter = ref_len // 4
+
+    # Define a few different roll presets:
+    roll_presets = []
+
+    # 1. Full-strip, white -> off, clockwise, medium speed
+    roll_presets.append(
+        make_roll_preset(
+            "roll_full_cw",
+            color1=(255, 255, 255),
+            color2=(0, 0, 0),
+            n1=0,
+            n2=0,
+            n3=2,       # 2 rotations then stop
+            n4=0,       # clockwise
+            delay_ms=40,
+            brightness=255,
+        )
+    )
+
+    # 2. Inner band only, red -> blue, clockwise, slower
+    roll_presets.append(
+        make_roll_preset(
+            "roll_inner_band",
+            color1=(255, 0, 0),
+            color2=(0, 0, 255),
+            n1=quarter,         # start margin
+            n2=quarter,         # end margin
+            n3=2,
+            n4=0,
+            delay_ms=60,
+            brightness=255,
+        )
+    )
+
+    # 3. Full-strip, green -> off, counter-clockwise, faster
+    roll_presets.append(
+        make_roll_preset(
+            "roll_full_ccw",
+            color1=(0, 255, 0),
+            color2=(0, 0, 0),
+            n1=0,
+            n2=0,
+            n3=2,
+            n4=1,        # counter-clockwise
+            delay_ms=30,
+            brightness=255,
+        )
+    )
+
+    # Run each roll preset for about 5 seconds
+    for name, preset_obj in roll_presets:
+        print("Running roll preset:", name)
+        run_preset(presets, name, preset_obj, duration_ms=5000)
+
+    print("Roll pattern test finished. Turning off LEDs.")
+    presets.select("off")
+    presets.tick()
+
+
+if __name__ == "__main__":
+    main()
+