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#include "storage/louds/bit_vector_based_array.h"

#include <string>

#include "base/port.h"
#include "storage/louds/bit_vector_based_array_builder.h"
#include "testing/base/public/gunit.h"

namespace {

using ::mozc::storage::louds::BitVectorBasedArray;
using ::mozc::storage::louds::BitVectorBasedArrayBuilder;

class BitVectorBasedArrayTest : public ::testing::Test {
};

TEST_F(BitVectorBasedArrayTest, Get) {
  struct {
    const char* element;
    const size_t length;
    const char* expected_element;
    const size_t expected_length;
  } kTestData[] = {
    { "", 0, "\x00\x00\x00\x00", 4 },
    { "a", 1, "a\x00\x00\x00", 4 },
    { "b", 1, "b\x00\x00\x00", 4 },
    { "c", 1, "c\x00\x00\x00", 4 },
    { "d", 1, "d\x00\x00\x00", 4 },
    { "abcdefg", 7, "abcdefg\x00", 8 },
    { "mozc", 4, "mozc", 4 },
    { "google-japanese-input", 21, "google-japanese-input\x00", 22 },
    { "abcdefg", 7, "abcdefg\x00", 8 },  // Test for storing a same element.
    { "testdata", 8, "testdata", 8 },
    { "another-test-data", 17, "another-test-data\x00", 18 },
  };

  BitVectorBasedArrayBuilder builder;
  for (size_t i = 0; i < arraysize(kTestData); ++i) {
    builder.Add(string(kTestData[i].element, kTestData[i].length));
  }
  builder.SetSize(4, 2);
  builder.Build();

  BitVectorBasedArray array;
  array.Open(reinterpret_cast<const uint8*>(builder.image().data()));
  for (size_t i = 0; i < arraysize(kTestData); ++i) {
    size_t length;
    const char *result = array.Get(i, &length);
    EXPECT_EQ(
        string(kTestData[i].expected_element, kTestData[i].expected_length),
        string(result, length));
  }

  array.Close();
}
}  // namespace