diff --git a/google-tests/test1.cpp b/google-tests/test1.cpp
index e549c62..6213c4b 100644
--- a/google-tests/test1.cpp
+++ b/google-tests/test1.cpp
@@ -37,3 +37,15 @@ TEST(HelloTest, Load_npy_matrix) {
     EXPECT_DOUBLE_EQ(data[2], expect_data[2]);
     EXPECT_DOUBLE_EQ(data[3], expect_data[3]);
 }
+
+TEST(HelloTest, Save_npy_matrix) {
+    const std::vector<double> data{1, 2, 3, 4, 5, 6};
+
+    npy::npy_data_ptr<double> d;
+    d.data_ptr = data.data();
+    d.shape = {2, 3};
+    d.fortran_order = false;
+
+    const std::string path{"test1/data2.npy"};
+    npy::write_npy(path, d);
+}