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diff --git a/tests/gtests/functions/FN_generic_vector_array_test.cc b/tests/gtests/functions/FN_generic_vector_array_test.cc
new file mode 100644
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+++ b/tests/gtests/functions/FN_generic_vector_array_test.cc
@@ -0,0 +1,118 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include "FN_cpp_types.hh"
+#include "FN_generic_vector_array.hh"
+
+#include "testing/testing.h"
+
+namespace blender {
+namespace fn {
+
+TEST(generic_vector_array, Constructor)
+{
+  GVectorArray vectors{CPPType_int32, 3};
+  EXPECT_EQ(vectors.size(), 3);
+  EXPECT_EQ(vectors.lengths().size(), 3);
+  EXPECT_EQ(vectors.starts().size(), 3);
+  EXPECT_EQ(vectors.lengths()[0], 0);
+  EXPECT_EQ(vectors.lengths()[1], 0);
+  EXPECT_EQ(vectors.lengths()[2], 0);
+  EXPECT_EQ(vectors.type(), CPPType_int32);
+}
+
+TEST(generic_vector_array, Append)
+{
+  GVectorArray vectors{CPPType_string, 3};
+  std::string value = "hello";
+  vectors.append(0, &value);
+  value = "world";
+  vectors.append(0, &value);
+  vectors.append(2, &value);
+
+  EXPECT_EQ(vectors.lengths()[0], 2);
+  EXPECT_EQ(vectors.lengths()[1], 0);
+  EXPECT_EQ(vectors.lengths()[2], 1);
+  EXPECT_EQ(vectors[0].size(), 2);
+  EXPECT_EQ(vectors[0].typed<std::string>()[0], "hello");
+  EXPECT_EQ(vectors[0].typed<std::string>()[1], "world");
+  EXPECT_EQ(vectors[2].typed<std::string>()[0], "world");
+}
+
+TEST(generic_vector_array, AsArraySpan)
+{
+  GVectorArray vectors{CPPType_int32, 3};
+  int value = 3;
+  vectors.append(0, &value);
+  vectors.append(0, &value);
+  value = 5;
+  vectors.append(2, &value);
+  vectors.append(2, &value);
+  vectors.append(2, &value);
+
+  GVArraySpan span = vectors;
+  EXPECT_EQ(span.type(), CPPType_int32);
+  EXPECT_EQ(span.size(), 3);
+  EXPECT_EQ(span[0].size(), 2);
+  EXPECT_EQ(span[1].size(), 0);
+  EXPECT_EQ(span[2].size(), 3);
+  EXPECT_EQ(span[0].typed<int>()[1], 3);
+  EXPECT_EQ(span[2].typed<int>()[0], 5);
+}
+
+TEST(generic_vector_array, TypedRef)
+{
+  GVectorArray vectors{CPPType_int32, 4};
+  GVectorArrayRef<int> ref = vectors.typed<int>();
+  ref.append(0, 2);
+  ref.append(0, 6);
+  ref.append(0, 7);
+  ref.append(2, 1);
+  ref.append(2, 1);
+  ref.append(3, 5);
+  ref.append(3, 6);
+
+  EXPECT_EQ(ref[0].size(), 3);
+  EXPECT_EQ(vectors[0].size(), 3);
+  EXPECT_EQ(ref[0][0], 2);
+  EXPECT_EQ(ref[0][1], 6);
+  EXPECT_EQ(ref[0][2], 7);
+  EXPECT_EQ(ref[1].size(), 0);
+  EXPECT_EQ(ref[2][0], 1);
+  EXPECT_EQ(ref[2][1], 1);
+  EXPECT_EQ(ref[3][0], 5);
+  EXPECT_EQ(ref[3][1], 6);
+}
+
+TEST(generic_vector_array, Extend)
+{
+  GVectorArray vectors{CPPType_int32, 3};
+  GVectorArrayRef<int> ref = vectors;
+
+  ref.extend(1, {5, 6, 7});
+  ref.extend(0, {3});
+
+  EXPECT_EQ(vectors[0].size(), 1);
+  EXPECT_EQ(vectors[1].size(), 3);
+  EXPECT_EQ(vectors[2].size(), 0);
+  EXPECT_EQ(ref[1][0], 5);
+  EXPECT_EQ(ref[1][1], 6);
+  EXPECT_EQ(ref[1][2], 7);
+  EXPECT_EQ(ref[0][0], 3);
+}
+
+}  // namespace fn
+}  // namespace blender