Add test.

Author: fangerer

graalpython/com.oracle.graal.python.test/src/tests/cpyext/test_mmap.py

@@ -0,0 +1,87 @@
+# Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+#
+# The Universal Permissive License (UPL), Version 1.0
+#
+# Subject to the condition set forth below, permission is hereby granted to any
+# person obtaining a copy of this software, associated documentation and/or
+# data (collectively the "Software"), free of charge and under any and all
+# copyright rights in the Software, and any and all patent rights owned or
+# freely licensable by each licensor hereunder covering either (i) the
+# unmodified Software as contributed to or provided by such licensor, or (ii)
+# the Larger Works (as defined below), to deal in both
+#
+# (a) the Software, and
+#
+# (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
+# one is included with the Software each a "Larger Work" to which the Software
+# is contributed by such licensors),
+#
+# without restriction, including without limitation the rights to copy, create
+# derivative works of, display, perform, and distribute the Software and make,
+# use, sell, offer for sale, import, export, have made, and have sold the
+# Software and the Larger Work(s), and to sublicense the foregoing rights on
+# either these or other terms.
+#
+# This license is subject to the following condition:
+#
+# The above copyright notice and either this complete permission notice or at a
+# minimum a reference to the UPL must be included in all copies or substantial
+# portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+import sys
+import mmap
+import tempfile
+from . import CPyExtTestCase, CPyExtFunction, CPyExtFunctionOutVars, unhandled_error_compare, GRAALPYTHON
+__dir__ = __file__.rpartition("/")[0]
+
+
+def create_and_map_file():
+    tmp = tempfile.mktemp(prefix="pymmap_")
+    with open(tmp, "w") as f:
+        f.write("hello, world")
+    f = open(tmp, "r")
+    return mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ)
+    
+
+class TestPyMmap(CPyExtTestCase):
+    def compile_module(self, name):
+        type(self).mro()[1].__dict__["test_%s" % name].create_module(name)
+        super(TestPyMmap, self).compile_module(name)
+
+
+    test_buffer = CPyExtFunction(
+        lambda args: b"hello, world",
+        lambda: (
+            (create_and_map_file(),),
+        ),
+        code="""
+        static PyObject* get_mmap_buf(PyObject* mmapObj) {
+            Py_buffer buf;
+            Py_ssize_t len, i;
+            char* data = NULL;
+            if (PyObject_GetBuffer(mmapObj, &buf, PyBUF_SIMPLE)) {
+                return NULL;
+            }
+            len = buf.len;
+            data = (char*) malloc(sizeof(char)*len);
+            for (i=0; i < buf.len; i++) {
+                data[i] = ((char *) buf.buf)[i];
+            }
+            return PyBytes_FromStringAndSize(data, len); 
+        }
+        """,
+        resultspec="O",
+        argspec='O',
+        arguments=["PyObject* mmapObj"],
+        callfunction="get_mmap_buf",
+        cmpfunc=unhandled_error_compare
+    )