Add cpp tests for Windows in CI

.github/workflows/build.yml

@@ -22,7 +22,10 @@ jobs:
         run: python -m unittest discover --start-directory python_bindings/tests --pattern "*_test*.py"
 
   test_cpp:
-    runs-on: ubuntu-latest
+    runs-on: ${{matrix.os}}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
@@ -34,17 +37,27 @@ jobs:
           mkdir build
           cd build
           cmake ..
-          make
+          if [ "$RUNNER_OS" == "Linux" ]; then
+            make
+          elif [ "$RUNNER_OS" == "Windows" ]; then
+            cmake --build ./ --config Release
+          fi
+        shell: bash
 
       - name: Prepare test data
         run: |
           pip install numpy
           cd examples
           python update_gen_data.py
+        shell: bash
 
       - name: Test
         run: |
           cd build
+          if [ "$RUNNER_OS" == "Windows" ]; then
+            cp ./Release/* ./
+          fi
           ./searchKnnCloserFirst_test
           ./test_updates
           ./test_updates update
+        shell: bash

examples/updates_test.cpp

@@ -1,5 +1,7 @@
 #include "../hnswlib/hnswlib.h"
 #include <thread>
+
+
 class StopW
 {
     std::chrono::steady_clock::time_point time_begin;
@@ -22,6 +24,7 @@ class StopW
     }
 };
 
+
 /*
  * replacement for the openmp '#pragma omp parallel for' directive
  * only handles a subset of functionality (no reductions etc)
@@ -81,8 +84,6 @@ inline void ParallelFor(size_t start, size_t end, size_t numThreads, Function fn
             std::rethrow_exception(lastException);
         }
     }
-
-
 }
 
 
@@ -94,7 +95,7 @@ std::vector<datatype> load_batch(std::string path, int size)
     assert(sizeof(datatype) == 4);
 
     std::ifstream file;
-    file.open(path);
+    file.open(path, std::ios::binary);
     if (!file.is_open())
     {
         std::cout << "Cannot open " << path << "\n";
@@ -107,6 +108,7 @@ std::vector<datatype> load_batch(std::string path, int size)
     return batch;
 }
 
+
 template <typename d_type>
 static float
 test_approx(std::vector<float> &queries, size_t qsize, hnswlib::HierarchicalNSW<d_type> &appr_alg, size_t vecdim,
@@ -137,6 +139,7 @@ test_approx(std::vector<float> &queries, size_t qsize, hnswlib::HierarchicalNSW<
     return 1.0f * correct / total;
 }
 
+
 static void
 test_vs_recall(std::vector<float> &queries, size_t qsize, hnswlib::HierarchicalNSW<float> &appr_alg, size_t vecdim,
                std::vector<std::unordered_set<hnswlib::labeltype>> &answers, size_t k)
@@ -155,6 +158,8 @@ test_vs_recall(std::vector<float> &queries, size_t qsize, hnswlib::HierarchicalN
         efs.push_back(i);
     }
     std::cout << "ef\trecall\ttime\thops\tdistcomp\n";
+
+    bool test_passed = false;
     for (size_t ef : efs)
     {
         appr_alg.setEf(ef);
@@ -171,20 +176,24 @@ test_vs_recall(std::vector<float> &queries, size_t qsize, hnswlib::HierarchicalN
         std::cout << ef << "\t" << recall << "\t" << time_us_per_query << "us \t"<<hops_per_query<<"\t"<<distance_comp_per_query << "\n";
         if (recall > 0.99)
         {
+            test_passed = true;
             std::cout << "Recall is over 0.99! "<<recall << "\t" << time_us_per_query << "us \t"<<hops_per_query<<"\t"<<distance_comp_per_query << "\n";
             break;
         }
     }
+    if (!test_passed)
+    {
+        std::cerr << "Test failed\n";
+        exit(1);
+    }
 }
 
+
 int main(int argc, char **argv)
 {
-
     int M = 16;
     int efConstruction = 200;
     int num_threads = std::thread::hardware_concurrency();
-
-
 
     bool update = false;
 
@@ -207,7 +216,6 @@ int main(int argc, char **argv)
 
     std::string path = "../examples/data/";
 
-
     int N;
     int dummy_data_multiplier;
     int N_queries;
@@ -240,7 +248,6 @@ int main(int argc, char **argv)
     if (update)
     {
         std::cout << "Update iteration 0\n";
-
 
         ParallelFor(1, N, num_threads, [&](size_t i, size_t threadId) {
             appr_alg.addPoint((void *)(dummy_batch.data() + i * d), i);
@@ -295,4 +302,4 @@ int main(int argc, char **argv)
     }
 
     return 0;
-};
+};