Repo created

3party/succinct/test_elias_fano.cpp

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+#define BOOST_TEST_MODULE elias_fano
+#include "test_common.hpp"
+#include "test_rank_select_common.hpp"
+
+#include <cstdlib>
+#include <boost/foreach.hpp>
+
+#include "mapper.hpp"
+#include "elias_fano.hpp"
+
+BOOST_AUTO_TEST_CASE(elias_fano)
+{
+    srand(42);
+    size_t N = 10000;
+
+    {
+        // Random bitmap
+        for (size_t d = 1; d < 8; ++d) {
+            double density = 1.0 / (1 << d);
+            std::vector<bool> v = random_bit_vector(N, density);
+
+            succinct::bit_vector_builder bvb;
+            for (size_t i = 0; i < v.size(); ++i) {
+                bvb.push_back(v[i]);
+            }
+
+            succinct::elias_fano bitmap(&bvb);
+            test_equal_bits(v, bitmap, "Random bitmap");
+            test_rank_select1(v, bitmap, "Random bitmap");
+            test_delta(bitmap, "Random bitmap");
+            test_select_enumeration(v, bitmap, "Random bitmap");
+        }
+    }
+
+    {
+        // Empty bitmap
+        succinct::bit_vector_builder bvb(N);
+        succinct::elias_fano bitmap(&bvb);
+        BOOST_REQUIRE_EQUAL(0U, bitmap.num_ones());
+        test_equal_bits(std::vector<bool>(N), bitmap, "Empty bitmap");
+        test_select_enumeration(std::vector<bool>(N), bitmap, "Empty bitmap");
+    }
+
+    {
+        // Only one value
+        std::vector<bool> v(N);
+        succinct::bit_vector_builder bvb(N);
+        bvb.set(37, 1);
+        v[37] = 1;
+        succinct::elias_fano bitmap(&bvb);
+        test_equal_bits(v, bitmap, "Only one value");
+        test_rank_select1(v, bitmap, "Only one value");
+        test_delta(bitmap, "Only one value");
+        test_select_enumeration(v, bitmap, "Only one value");
+        BOOST_REQUIRE_EQUAL(1U, bitmap.num_ones());
+    }
+
+    {
+        // Full bitmap
+        std::vector<bool> v(N, 1);
+        succinct::bit_vector_builder bvb;
+        for (size_t i = 0; i < N; ++i) {
+            bvb.push_back(1);
+        }
+        succinct::elias_fano bitmap(&bvb);
+        test_equal_bits(v, bitmap, "Full bitmap");
+        test_rank_select1(v, bitmap, "Full bitmap");
+        test_delta(bitmap, "Full bitmap");
+        test_select_enumeration(v, bitmap, "Full bitmap");
+    }
+}