Avoid printing True in C program

& test it!

Closes: #74

adafruit_pioasm.py

@@ -545,7 +545,7 @@ class Program:  # pylint: disable=too-few-public-methods
         sideset_pin_count = self.pio_kwargs.get("sideset_pin_count", 0)
         print(f"{qualifier} int {name}_sideset_pin_count = {sideset_pin_count};")
         print(
-            f"{qualifier} bool {name}_sideset_enable = {self.pio_kwargs['sideset_enable']};"
+            f"{qualifier} bool {name}_sideset_enable = {+self.pio_kwargs['sideset_enable']};"
         )
         print(f"{qualifier} uint16_t {name}[] = " + "{")
         last_line = 0

tests/test_print_c_program.py

@@ -0,0 +1,17 @@
+# SPDX-FileCopyrightText: 2025 Jeff Epler, written for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import contextlib
+import io
+
+import adafruit_pioasm
+
+
+def test_print_c_program():
+    output = io.StringIO()
+    with contextlib.redirect_stdout(output):
+        adafruit_pioasm.Program(".side_set 1 opt").print_c_program("mood")
+    c_program = output.getvalue()
+    assert "True" not in c_program
+    assert "sideset_enable = 1" in c_program