1 files changed, 25 insertions, 0 deletions
diff --git a/tests/micropython/viper_ptr8_load_boundary.py b/tests/micropython/viper_ptr8_load_boundary.py
new file mode 100644
index 000000000..bcb17a1e1
--- /dev/null
+++ b/tests/micropython/viper_ptr8_load_boundary.py
@@ -0,0 +1,25 @@
+# Test boundary conditions for various architectures
+
+GET_TEMPLATE = """
+@micropython.viper
+def get{off}(src: ptr8) -> int:
+    return src[{off}]
+print(get{off}(b))
+"""
+
+
+@micropython.viper
+def get_index(src: ptr8, i: int) -> int:
+    return src[i]
+
+
+b = bytearray(5000)
+b[30:32] = b"123"
+b[254:256] = b"456"
+b[4094:4096] = b"789"
+
+for pre, idx, post in (30, 31, 32), (254, 255, 256), (4094, 4095, 4096):
+    print(get_index(b, pre), get_index(b, idx), get_index(b, post))
+    exec(GET_TEMPLATE.format(off=pre))
+    exec(GET_TEMPLATE.format(off=idx))
+    exec(GET_TEMPLATE.format(off=post))