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#include <sstream>
#include <string>
#include "base/hash_tables.h"
#include "base/util.h"
#include "dictionary/rx/rx_trie_builder.h"
#include "testing/base/public/gunit.h"
namespace mozc {
namespace rx {
namespace {
TEST(RxTrieBuilderTest, BasicTest) {
// 6 unique entries
const char *kKeys[] = {
"a",
"b",
"c",
"aa",
"aaa",
"aab",
"a",
};
RxTrieBuilder builder;
for (size_t i = 0; i < arraysize(kKeys); ++i) {
builder.AddKey(kKeys[i]);
}
builder.Build();
hash_set<int> seen;
for (size_t i = 0; i < arraysize(kKeys); ++i) {
const int id = builder.GetIdFromKey(kKeys[i]);
EXPECT_GE(id, 0);
seen.insert(id);
}
EXPECT_EQ(6, seen.size());
EXPECT_EQ(-1, builder.GetIdFromKey("unknown"));
}
TEST(RxTrieBuilderTest, RandomTest) {
srand(0);
const int kTestSize = 1000000;
hash_set<string> inserted;
RxTrieBuilder builder;
for (size_t i = 0; i < kTestSize; ++i) {
const string key = Util::SimpleItoa(
static_cast<int>(1.0 * kTestSize * rand() / (RAND_MAX + 1.0)));
builder.AddKey(key);
inserted.insert(key);
}
builder.Build();
for (size_t i = 0; i < kTestSize; ++i) {
const string key = Util::SimpleItoa(
static_cast<int>(1.0 * kTestSize * rand() / (RAND_MAX + 1.0)));
if (inserted.find(key) != inserted.end()) {
EXPECT_GE(builder.GetIdFromKey(key), 0);
} else {
EXPECT_EQ(-1, builder.GetIdFromKey(key));
}
}
hash_set<int> ids;
for (size_t i = 0; i < kTestSize; ++i) {
const string key = Util::SimpleItoa(i);
const int id = builder.GetIdFromKey(key);
if (id != -1) {
ids.insert(id);
}
}
EXPECT_EQ(inserted.size(), ids.size());
}
} // namespace
} // namespace rx
} // namespace mozc