Fixed Blob bug causing test crashes/hangs.

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@567755 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 125 insertions, 0 deletions

diff --git a/cpp/src/tests/Blob.cpp b/cpp/src/tests/Blob.cpp
new file mode 100644
index 0000000000..96861a3670
--- /dev/null
+++ b/cpp/src/tests/Blob.cpp
@@ -0,0 +1,125 @@
+/*
+ *
+ * Copyright (c) 2006 The Apache Software Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "qpid/framing/Blob.h"
+
+#define BOOST_AUTO_TEST_MAIN
+#include <boost/test/auto_unit_test.hpp>
+
+using namespace std;
+using namespace qpid::framing;
+
+struct Base {
+    int id;
+    int magic;
+
+    Base(int n) : id(n), magic(42) {}
+    Base(const Base& c) : id(c.id), magic(42) {}
+    ~Base() { BOOST_CHECK_EQUAL(42, magic); } // Detect random data. 
+};
+
+template <class T> struct Count : public Base {
+    static int instances;
+    bool destroyed;
+    
+    Count(int n) : Base(n), destroyed(false) { ++instances; }
+    Count(const Count& c) : Base(c), destroyed(false) { ++instances; }
+    ~Count() {
+        BOOST_CHECK(!destroyed); // Detect double-destructor
+        destroyed=true;
+        BOOST_CHECK(--instances >= 0);
+    }
+};
+
+template <class T> int Count<T>::instances = 0;
+
+struct Foo : public Count<Foo> { Foo(int n) : Count<Foo>(n) {}; };
+struct Bar : public Count<Bar> { Bar(int n) : Count<Bar>(n) {}; };
+
+typedef Blob<sizeof(Foo), Base> TestBlob ;
+
+BOOST_AUTO_TEST_CASE(testCtor) {
+    {
+        TestBlob empty;
+        BOOST_CHECK(empty.empty());
+        BOOST_CHECK(empty.get() == 0);
+
+        TestBlob empty2(empty);
+        BOOST_CHECK(empty2.empty());
+
+        TestBlob foo(in_place<Foo>(1));
+        BOOST_CHECK(!foo.empty());
+        BOOST_CHECK_EQUAL(1, foo.get()->id);
+        BOOST_CHECK_EQUAL(1, Foo::instances);
+
+        TestBlob foo2(foo);
+        BOOST_CHECK(!foo2.empty());
+        BOOST_CHECK_EQUAL(1, foo2.get()->id);
+        BOOST_CHECK_EQUAL(2, Foo::instances);
+    }
+    
+    BOOST_CHECK_EQUAL(0, Foo::instances);
+    BOOST_CHECK_EQUAL(0, Bar::instances);
+}
+
+
+BOOST_AUTO_TEST_CASE(testAssign) {
+    {
+        TestBlob b;
+        b = Foo(2);
+        BOOST_CHECK_EQUAL(2, b.get()->id);
+        BOOST_CHECK_EQUAL(1, Foo::instances);
+
+        TestBlob b2(b);
+        BOOST_CHECK_EQUAL(2, b.get()->id);
+        BOOST_CHECK_EQUAL(2, Foo::instances);
+    
+        b2 = Bar(3);
+        BOOST_CHECK_EQUAL(3, b2.get()->id);
+        BOOST_CHECK_EQUAL(1, Foo::instances);
+        BOOST_CHECK_EQUAL(1, Bar::instances);
+
+        b2.construct(in_place<Foo>(4)); 
+        BOOST_CHECK_EQUAL(4, b2.get()->id);
+        BOOST_CHECK_EQUAL(2, Foo::instances);
+        BOOST_CHECK_EQUAL(0, Bar::instances);
+
+        b2.clear();
+        BOOST_CHECK(b2.empty());
+        BOOST_CHECK_EQUAL(1, Foo::instances);
+    }
+    BOOST_CHECK_EQUAL(0, Foo::instances);
+    BOOST_CHECK_EQUAL(0, Bar::instances);
+}
+
+
+BOOST_AUTO_TEST_CASE(testClear) {
+    TestBlob b(in_place<Foo>(5));
+    TestBlob c(b);
+    BOOST_CHECK(!c.empty());
+    BOOST_CHECK(!b.empty());
+    BOOST_CHECK_EQUAL(2, Foo::instances);
+
+    c.clear();
+    BOOST_CHECK(c.empty());
+    BOOST_CHECK_EQUAL(1, Foo::instances);
+
+    b.clear(); 
+    BOOST_CHECK(b.empty());
+    BOOST_CHECK_EQUAL(0, Foo::instances);
+}