1 files changed, 37 insertions, 0 deletions
diff --git a/tests/basics/struct1_intbig.py b/tests/basics/struct1_intbig.py
new file mode 100644
index 0000000000..7f4c3ce120
--- /dev/null
+++ b/tests/basics/struct1_intbig.py
@@ -0,0 +1,37 @@
+try:
+    import ustruct as struct
+except:
+    try:
+        import struct
+    except ImportError:
+        import sys
+        print("SKIP")
+        sys.exit()
+
+# check maximum pack on 32-bit machine
+print(struct.pack("<I", 2**32 - 1))
+print(struct.pack("<I", 0xffffffff))
+
+# long long ints
+print(struct.pack("<Q", 2**64 - 1))
+print(struct.pack(">Q", 2**64 - 1))
+print(struct.pack("<Q", 0xffffffffffffffff))
+print(struct.pack(">Q", 0xffffffffffffffff))
+print(struct.pack("<q", -1))
+print(struct.pack(">q", -1))
+print(struct.pack("<Q", 1234567890123456789))
+print(struct.pack("<q", -1234567890123456789))
+print(struct.pack(">Q", 1234567890123456789))
+print(struct.pack(">q", -1234567890123456789))
+print(struct.unpack("<Q", b"\x12\x34\x56\x78\x90\x12\x34\x56"))
+print(struct.unpack(">Q", b"\x12\x34\x56\x78\x90\x12\x34\x56"))
+print(struct.unpack("<q", b"\x12\x34\x56\x78\x90\x12\x34\xf6"))
+print(struct.unpack(">q", b"\xf2\x34\x56\x78\x90\x12\x34\x56"))
+
+# check maximum unpack
+print(struct.unpack("<I", b"\xff\xff\xff\xff"))
+print(struct.unpack("<Q", b"\xff\xff\xff\xff\xff\xff\xff\xff"))
+
+# check small int overflow
+print(struct.unpack("<i", b'\xff\xff\xff\x7f'))
+print(struct.unpack("<q", b'\xff\xff\xff\xff\xff\xff\xff\x7f'))