RotationIndexerTest: Use FFT or FFTW indexing (if available)

tests/RotationIndexerTest.cpp

@@ -17,18 +17,26 @@ TEST_CASE("RotationIndexer") {
          .DetectorDistance_mm(200);
 
     IndexingSettings settings;
+#ifdef JFJOCH_USE_CUDA
+    settings.Algorithm(IndexingAlgorithmEnum::FFT);
+#elif JFJOCH_USE_FFTW
+    settings.Algorithm(IndexingAlgorithmEnum::FFTW);
+#else
+    return;
+#endif
+
     settings.RotationIndexing(true).RotationIndexingAngularStride_deg(1.0).RotationIndexingMinAngularRange_deg(30.0);
     exp_i.ImportIndexingSettings(settings);
 
     // Base lattice (non-pathological)
-    CrystalLattice latt_base(40, 50, 80, 90, 95, 90);
+    CrystalLattice latt_base(40, 50, 80, 90, 90, 90);
 
     // Rotation axis: around X with 1 deg per image
     GoniometerAxis axis("omega", 0.0f, 1.0f, Coord(1,0,0), std::nullopt);
     exp_i.Goniometer(axis);
 
     BraggPredictionSettings prediction_settings{
-        .high_res_A = 1.5,
+        .high_res_A = 1.3,
         .ewald_dist_cutoff = 0.002
     };
 
@@ -65,7 +73,7 @@ TEST_CASE("RotationIndexer") {
     CHECK (cnt == 20);
     
     auto ret = indexer.Finalize(false);
-    REQUIRE(ret);
+    REQUIRE(ret.has_value());
     CHECK(ret->search_result.centering == 'P');
     CHECK(ret->search_result.system == gemmi::CrystalSystem::Monoclinic);
 }