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#include "rewriter/remove_redundant_candidate_rewriter.h"

#include "converter/segments.h"
#include "protocol/commands.pb.h"
#include "request/conversion_request.h"
#include "testing/base/public/gunit.h"

namespace mozc {
TEST(RemoveRedundantCandidateRewriterTest, RemoveTest) {
  RemoveRedundantCandidateRewriter rewriter;
  Segments segments;
  Segment *segment = segments.add_segment();
  segment->set_key("a");
  Segment::Candidate *candidate = segment->add_candidate();
  candidate->Init();
  candidate->key = "a";
  candidate->value = "a";

  const ConversionRequest default_request;
  EXPECT_TRUE(rewriter.Rewrite(default_request, &segments));
  EXPECT_EQ(0, segment->candidates_size());
}

TEST(RemoveRedundantCandidateRewriterTest, NoRemoveTest) {
  RemoveRedundantCandidateRewriter rewriter;
  Segments segments;
  Segment *segment = segments.add_segment();
  segment->set_key("a");
  Segment::Candidate *candidate = segment->add_candidate();
  candidate->Init();
  candidate->key = "a";
  candidate->value = "aa";

  const ConversionRequest default_request;
  EXPECT_FALSE(rewriter.Rewrite(default_request, &segments));
  EXPECT_EQ(1, segment->candidates_size());
}

TEST(RemoveRedundantCandidateRewriterTest, CapabilityTest) {
  RemoveRedundantCandidateRewriter rewriter;
  ConversionRequest convreq;
  commands::Request request;
  convreq.set_request(&request);
  { EXPECT_EQ(RewriterInterface::NOT_AVAILABLE, rewriter.capability(convreq)); }

  {
    request.set_mixed_conversion(true);
    EXPECT_EQ(RewriterInterface::ALL, rewriter.capability(convreq));
  }
}
}  // namespace mozc
