1 files changed, 24 insertions, 0 deletions
diff --git a/tests/basics/int_bytes.py b/tests/basics/int_bytes.py
index 059c16d3f..d42afac1f 100644
--- a/tests/basics/int_bytes.py
+++ b/tests/basics/int_bytes.py
@@ -1,6 +1,11 @@
 print((10).to_bytes(1, "little"))
+print((-10).to_bytes(1, "little", signed=True))
+# Test fitting in length that's not a power of two.
+print((0x10000).to_bytes(3, 'little'))
 print((111111).to_bytes(4, "little"))
+print((-111111).to_bytes(4, "little", signed=True))
 print((100).to_bytes(10, "little"))
+print((-100).to_bytes(10, "little", signed=True))
 
 # check that extra zero bytes don't change the internal int value
 print(int.from_bytes(bytes(20), "little") == 0)
@@ -8,7 +13,9 @@ print(int.from_bytes(b"\x01" + bytes(20), "little") == 1)
 
 # big-endian conversion
 print((10).to_bytes(1, "big"))
+print((-10).to_bytes(1, "big", signed=True))
 print((100).to_bytes(10, "big"))
+print((-100).to_bytes(10, "big", signed=True))
 print(int.from_bytes(b"\0\0\0\0\0\0\0\0\0\x01", "big"))
 print(int.from_bytes(b"\x01\0", "big"))
 
@@ -17,3 +24,20 @@ try:
     (1).to_bytes(-1, "little")
 except ValueError:
     print("ValueError")
+
+# too small buffer should raise an error
+try:
+    (256).to_bytes(1, "little")
+except OverflowError:
+    print("OverflowError")
+
+# negative numbers should raise an error if signed=False
+try:
+    (-256).to_bytes(2, "little")
+except OverflowError:
+    print("OverflowError")
+
+try:
+    (-256).to_bytes(2, "little", signed=False)
+except OverflowError:
+    print("OverflowError")