1 files changed, 62 insertions, 0 deletions
diff --git a/test/test_limits.py b/test/test_limits.py
new file mode 100644
index 0000000..da8cd2b
--- /dev/null
+++ b/test/test_limits.py
@@ -0,0 +1,62 @@
+#!/usr/bin/env python
+# coding: utf-8
+from __future__ import absolute_import, division, print_function, unicode_literals
+import pytest
+
+from msgpack import packb, unpackb, Packer
+
+
+def test_integer():
+    x = -(2 ** 63)
+    assert unpackb(packb(x)) == x
+    with pytest.raises((OverflowError, ValueError)):
+        packb(x-1)
+
+    x = 2 ** 64 - 1
+    assert unpackb(packb(x)) == x
+    with pytest.raises((OverflowError, ValueError)):
+        packb(x+1)
+
+
+def test_array_header():
+    packer = Packer()
+    packer.pack_array_header(2**32-1)
+    with pytest.raises(ValueError):
+        packer.pack_array_header(2**32)
+
+
+def test_map_header():
+    packer = Packer()
+    packer.pack_map_header(2**32-1)
+    with pytest.raises(ValueError):
+        packer.pack_array_header(2**32)
+
+
+# PyPy fails following tests because of constant folding?
+# https://bugs.pypy.org/issue1721
+#@pytest.mark.skipif(True, reason="Requires very large memory.")
+#def test_binary():
+#    x = b'x' * (2**32 - 1)
+#    assert unpackb(packb(x)) == x
+#    del x
+#    x = b'x' * (2**32)
+#    with pytest.raises(ValueError):
+#        packb(x)
+#
+#
+#@pytest.mark.skipif(True, reason="Requires very large memory.")
+#def test_string():
+#    x = 'x' * (2**32 - 1)
+#    assert unpackb(packb(x)) == x
+#    x += 'y'
+#    with pytest.raises(ValueError):
+#        packb(x)
+#
+#
+#@pytest.mark.skipif(True, reason="Requires very large memory.")
+#def test_array():
+#    x = [0] * (2**32 - 1)
+#    assert unpackb(packb(x)) == x
+#    x.append(0)
+#    with pytest.raises(ValueError):
+#        packb(x)