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1 files changed, 95 insertions, 0 deletions

diff --git a/searchlib/src/tests/predicate/predicate_zstar_compressed_posting_list_test.cpp b/searchlib/src/tests/predicate/predicate_zstar_compressed_posting_list_test.cpp
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+++ b/searchlib/src/tests/predicate/predicate_zstar_compressed_posting_list_test.cpp
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+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+// Unit tests for predicate_zstar_compressed_posting_list.
+
+#include <vespa/log/log.h>
+LOG_SETUP("predicate_zstar_compressed_posting_list_test");
+#include <vespa/fastos/fastos.h>
+
+#include <vespa/searchlib/predicate/predicate_tree_annotator.h>
+#include <vespa/searchlib/predicate/predicate_zstar_compressed_posting_list.h>
+#include <vespa/vespalib/testkit/testapp.h>
+
+using namespace search;
+using namespace search::predicate;
+using std::vector;
+
+namespace {
+
+struct DummyDocIdLimitProvider : public DocIdLimitProvider {
+    virtual uint32_t getDocIdLimit() const { return 10000; }
+    virtual uint32_t getCommittedDocIdLimit() const { return 10000; }
+};
+
+vespalib::GenerationHandler generation_handler;
+vespalib::GenerationHolder generation_holder;
+DummyDocIdLimitProvider limit_provider;
+SimpleIndexConfig config;
+const uint64_t hash = 0x123;
+
+TEST("require that empty posting list starts at 0.") {
+    PredicateIndex index(generation_handler, generation_holder, limit_provider, config, 8);
+    btree::EntryRef ref;
+    PredicateZstarCompressedPostingList<PredicateIndex::BTreeIterator>
+        posting_list(index.getIntervalStore(), index.getIntervalIndex().getBTreePostingList(ref));
+    EXPECT_EQUAL(0u, posting_list.getDocId());
+    EXPECT_EQUAL(0u, posting_list.getInterval());
+    EXPECT_FALSE(posting_list.next(0));
+}
+
+TEST("require that posting list can iterate.") {
+    PredicateIndex index(generation_handler, generation_holder, limit_provider, config, 8);
+    const auto &interval_index = index.getIntervalIndex();
+    vector<vector<Interval>> intervals =
+        {{{0x00010000}},
+         {{0x00010000}, {0x0000ffff}},
+         {{0x00010000}, {0x00000003}, {0x00040003}, {0x00060005}}};
+    for (size_t i = 0; i < intervals.size(); ++i) {
+        PredicateTreeAnnotations annotations(1);
+        annotations.interval_map[hash] = intervals[i];
+        index.indexDocument(i + 1, annotations);
+    }
+    index.commit();
+    auto it = interval_index.lookup(hash);
+    ASSERT_TRUE(it.valid());
+    auto ref = it.getData();
+
+    PredicateZstarCompressedPostingList<PredicateIndex::BTreeIterator>
+        posting_list(index.getIntervalStore(), interval_index.getBTreePostingList(ref));
+    EXPECT_EQUAL(0u, posting_list.getDocId());
+    EXPECT_EQUAL(0u, posting_list.getInterval());
+
+    EXPECT_TRUE(posting_list.next(0));
+    EXPECT_EQUAL(1u, posting_list.getDocId());
+    EXPECT_EQUAL(0x00010000u, posting_list.getInterval());
+    ASSERT_TRUE(posting_list.nextInterval());
+    EXPECT_EQUAL(0x00020001u, posting_list.getInterval());
+    ASSERT_FALSE(posting_list.nextInterval());
+
+    EXPECT_TRUE(posting_list.next(1));
+    EXPECT_EQUAL(2u, posting_list.getDocId());
+    EXPECT_EQUAL(0x00010000u, posting_list.getInterval());
+    ASSERT_TRUE(posting_list.nextInterval());
+    EXPECT_EQUAL(0xffff0001u, posting_list.getInterval());
+    ASSERT_FALSE(posting_list.nextInterval());
+
+    ASSERT_TRUE(posting_list.next(2));
+    EXPECT_EQUAL(3u, posting_list.getDocId());
+    EXPECT_EQUAL(0x00010000u, posting_list.getInterval());
+    ASSERT_TRUE(posting_list.nextInterval());
+    EXPECT_EQUAL(0x00030001u, posting_list.getInterval());
+    ASSERT_TRUE(posting_list.nextInterval());
+    EXPECT_EQUAL(0x00040003u, posting_list.getInterval());
+    ASSERT_TRUE(posting_list.nextInterval());
+    EXPECT_EQUAL(0x00050004u, posting_list.getInterval());
+    ASSERT_TRUE(posting_list.nextInterval());
+    EXPECT_EQUAL(0x00060005u, posting_list.getInterval());
+    ASSERT_TRUE(posting_list.nextInterval());
+    EXPECT_EQUAL(0x00070006u, posting_list.getInterval());
+    ASSERT_FALSE(posting_list.nextInterval());
+
+    ASSERT_FALSE(posting_list.next(4));
+}
+
+}  // namespace
+
+TEST_MAIN() { TEST_RUN_ALL(); }