1 files changed, 66 insertions, 0 deletions
diff --git a/tests/run/builtin_memory_view.pyx b/tests/run/builtin_memory_view.pyx
new file mode 100644
index 000000000..34dd32ba7
--- /dev/null
+++ b/tests/run/builtin_memory_view.pyx
@@ -0,0 +1,66 @@
+# mode: run
+
+# Tests Python's builtin memoryview.
+
+from __future__ import print_function
+
+import sys
+
+cimport cython
+#from cpython.memoryview cimport PyMemoryView_GET_BUFFER
+
+@cython.test_fail_if_path_exists("//SimpleCallNode")
+def test_convert_from_obj(o):
+    """
+    >>> abc = b'abc'
+    >>> all(x == y for x, y in zip(test_convert_from_obj(abc), abc))
+    True
+    """
+    return memoryview(o)
+
+# TODO - this currently doesn't work because the buffer fails a
+# "can coerce to python object" test earlier. But it'd be nice to support
+'''
+def test_create_from_buffer():
+    """
+    memoryview from Py_buffer exists and is special-cased
+    >>> mview = test_create_from_buffer()
+    >>> >>> all(x == y for x, y in zip(mview, b'argh!'))
+    True
+    """
+    other_view = memoryview(b'argh!')
+    cdef Py_buffer *buf = PyMemoryView_GET_BUFFER(other_view)
+    return memoryview(buf)
+'''
+
+@cython.test_fail_if_path_exists("//AttributeNode")
+def test_optimized_attributes(memoryview view):
+    """
+    >>> test_optimized_attributes(memoryview(b'zzzzz'))
+    1 1 True
+    """
+    print(view.itemsize, view.ndim, view.readonly)
+
+def test_isinstance(x):
+    """
+    >>> test_isinstance(b"abc")
+    False
+    >>> test_isinstance(memoryview(b"abc"))
+    True
+    """
+    return isinstance(x, memoryview)
+
+def test_in_with(x):
+    """
+    This is really just a compile test. An optimization was being
+    applied in a way that generated invalid code
+    >>> test_in_with(b"abc")
+    98
+    """
+    if sys.version_info[0] < 3:
+        # Python 2 doesn't support memoryviews as context-managers
+        # so just skip the test
+        print(98)
+        return
+    with memoryview(x) as xv:
+        print(xv[1])