ceph_test_rados_api_io_pp: add multiple extents test for sparse-read

Just test more with a larger size to test the sparse-read to find
some corner case bugs.

Signed-off-by: Xiubo Li <[email protected]>

Author: lxbsz

src/test/librados/io_cxx.cc

@@ -218,6 +218,39 @@ TEST_F(LibRadosIoPP, SparseReadOpPP) {
   }
 }
 
+TEST_F(LibRadosIoPP, SparseReadExtentArrayOpPP) {
+  int buf_len = 32;
+  char buf[buf_len], zbuf[buf_len];
+  memset(buf, 0xcc, buf_len);
+  memset(zbuf, 0, buf_len);
+  bufferlist bl;
+  int i, len = 1024, skip = 5;
+  bl.append(buf, buf_len);
+  for (i = 0; i < len; i++) {
+    if (!(i % skip) || i == (len - 1)) {
+      ASSERT_EQ(0, ioctx.write("sparse-read", bl, bl.length(), i * buf_len));
+    }
+  }
+
+  bufferlist expect_bl;
+  for (i = 0; i < len; i++) {
+    if (!(i % skip) || i == (len - 1)) {
+      expect_bl.append(buf, buf_len);
+    } else {
+      expect_bl.append(zbuf, buf_len);
+    }
+  }
+
+  std::map<uint64_t, uint64_t> extents;
+  bufferlist read_bl;
+  int rval = -1;
+  ObjectReadOperation op;
+  op.sparse_read(0, len * buf_len, &extents, &read_bl, &rval);
+  ASSERT_EQ(0, ioctx.operate("sparse-read", &op, nullptr));
+  ASSERT_EQ(0, rval);
+  assert_eq_sparse(expect_bl, extents, read_bl);
+}
+
 TEST_F(LibRadosIoPP, RoundTripPP) {
   char buf[128];
   Rados cluster;