Packed vector cleanups and unit test

unit_tests/util/packed_vector.cpp

@@ -0,0 +1,34 @@
+#include "util/packed_vector.hpp"
+#include "util/typedefs.hpp"
+
+#include <boost/test/unit_test.hpp>
+#include <boost/test/test_case_template.hpp>
+
+BOOST_AUTO_TEST_SUITE(packed_vector_test)
+
+using namespace osrm;
+using namespace osrm::util;
+
+// Verify that the packed vector behaves as expected
+BOOST_AUTO_TEST_CASE(insert_and_retrieve_packed_test)
+{
+    PackedVector packed_ids;
+    std::vector<OSMNodeID> original_ids;
+
+    const constexpr std::size_t num_test_cases = 399;
+
+    for (std::size_t i = 0; i < num_test_cases; i++)
+    {
+        OSMNodeID r = static_cast<OSMNodeID>(rand() % 2147483647); // max 33-bit uint
+
+        packed_ids.insert(r);
+        original_ids.push_back(r);
+    }
+
+    for (std::size_t i = 0; i < num_test_cases; i++)
+    {
+        BOOST_CHECK_EQUAL(original_ids.at(i), packed_ids.retrieve(i));
+    }
+}
+
+BOOST_AUTO_TEST_SUITE_END()