message: test: clarify fail messages
diff: @@ -166,12 +166,12 @@ PERF_TEST_P( matchVector, bestOf2NearestVectorFeatures, testing::Combine(
  if (pairwise_matches[i].src_img_idx < 0)
  continue;
  - EXPECT_TRUE(pairwise_matches[i].matches.size() > 100);
  + EXPECT_GT(pairwise_matches[i].matches.size(), 100);
  EXPECT_FALSE(pairwise_matches[i].H.empty());
  ++matches_count;
  }
  - EXPECT_TRUE(matches_count > 0);
  + EXPECT_GT(matches_count, 0u);
  SANITY_CHECK_NOTHING();
  }
  