Imported Upstream version 4.0.0upstream/4.0.0

1 files changed, 185 insertions, 0 deletions

diff --git a/libcutl/tests/shared-ptr/driver.cxx b/libcutl/tests/shared-ptr/driver.cxx
new file mode 100644
index 0000000..3e763a0
--- /dev/null
+++ b/libcutl/tests/shared-ptr/driver.cxx
@@ -0,0 +1,185 @@
+// file      : tests/shared-ptr/driver.cxx
+// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC
+// license   : MIT; see accompanying LICENSE file
+
+#include <string>
+#include <cassert>
+
+#include <cutl/shared-ptr.hxx>
+
+using namespace cutl;
+
+struct type
+{
+  type (int x, char const* y) : x_ (x), y_ (y) {}
+
+  int x_;
+  std::string y_;
+};
+
+struct base1
+{
+  virtual
+  ~base1 () {}
+  base1 (int x) : x_ (x) {}
+
+  int x_;
+};
+
+struct base2
+{
+  virtual
+  ~base2 () {}
+  base2 (char const* y) : y_ (y) {}
+
+  std::string y_;
+};
+
+struct derived: base1, base2
+{
+  derived (int x, char const* y) : base1 (x), base2 (y) {}
+};
+
+struct shared_type: shared_base
+{
+  shared_type (int x, char const* y)
+      : x_ (x), y_ (y)
+  {
+    assert (ref_count (this) == 1);
+  }
+
+  int x_;
+  std::string y_;
+};
+
+int
+main ()
+{
+  //
+  // inc_ref, dec_ref, ref_count
+  //
+
+  // Non-polymorphic type.
+  //
+  {
+    type* x (new (shared) type (5, "foo"));
+    assert (ref_count (x) == 1);
+    inc_ref (x);
+    assert (ref_count (x) == 2);
+    dec_ref (x);
+    assert (ref_count (x) == 1);
+    dec_ref (x);
+  }
+
+  // Polymorphic type.
+  //
+  {
+    base2* x (new (shared) derived (5, "foo"));
+    assert (ref_count (x) == 1);
+    inc_ref (x);
+    assert (ref_count (x) == 2);
+    dec_ref (x);
+    assert (ref_count (x) == 1);
+    dec_ref (x);
+  }
+
+  // Shared type.
+  //
+  {
+    shared_type* x (new (shared) shared_type (5, "foo"));
+    assert (ref_count (x) == 1);
+    inc_ref (x);
+    assert (ref_count (x) == 2);
+    dec_ref (x);
+    assert (ref_count (x) == 1);
+    dec_ref (x);
+  }
+
+  // Error handling (this theoretically can segfault).
+  //
+  {
+    type* x (new type (5, "foo"));
+
+    try
+    {
+      inc_ref (x);
+      assert (false);
+    }
+    catch (not_shared const&)
+    {
+    }
+
+    delete x;
+  }
+
+  //
+  // shared_ptr
+  //
+
+  // Non-polymorphic type.
+  //
+  {
+    shared_ptr<type> x (new (shared) type (5, "foo"));
+    assert (x.count () == 1);
+    assert (x);
+    assert (x->x_ == 5);
+    assert ((*x).y_ == "foo");
+    {
+      shared_ptr<type> y (x);
+      assert (y.count () == 2);
+    }
+    {
+      shared_ptr<type> y;
+      y = x;
+      assert (y.count () == 2);
+    }
+    assert (x.count () == 1);
+    shared_ptr<type> y (x.release ());
+    assert (y.count () == 1);
+  }
+
+  // Polymorphic type.
+  //
+  {
+    shared_ptr<derived> x (new (shared) derived (5, "foo"));
+    assert (x.count () == 1);
+    {
+      shared_ptr<base2> y (x);
+      assert (y.count () == 2);
+      assert (y->y_ == "foo");
+    }
+    {
+      shared_ptr<base2> y;
+      y = x;
+      assert (y.count () == 2);
+    }
+    assert (x.count () == 1);
+  }
+
+  // Non-polymorphic type.
+  //
+  {
+    shared_ptr<shared_type> x (new (shared) shared_type (5, "foo"));
+    assert (x.count () == 1);
+    assert (x);
+    assert (x->x_ == 5);
+    assert ((*x).y_ == "foo");
+    assert (x->_ref_count () == 1);
+    x->_inc_ref ();
+    assert (x.count () == 2);
+    x->_dec_ref ();
+    assert (x.count () == 1);
+    {
+      shared_ptr<shared_type> y (x);
+      assert (y.count () == 2);
+    }
+    {
+      shared_ptr<shared_type> y;
+      y = x;
+      assert (y.count () == 2);
+    }
+    assert (x.count () == 1);
+    shared_ptr<shared_type> y (x.release ());
+    assert (y.count () == 1);
+  }
+}