1 files changed, 53 insertions, 0 deletions
diff --git a/source/blender/blenlib/tests/BLI_generic_span_test.cc b/source/blender/blenlib/tests/BLI_generic_span_test.cc
new file mode 100644
index 00000000000..fe07a67d63b
--- /dev/null
+++ b/source/blender/blenlib/tests/BLI_generic_span_test.cc
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: Apache-2.0 */
+
+#include "testing/testing.h"
+
+#include "BLI_generic_span.hh"
+
+namespace blender::tests {
+
+TEST(generic_span, TypeConstructor)
+{
+  GSpan span(CPPType::get<float>());
+  EXPECT_EQ(span.size(), 0);
+  EXPECT_EQ(span.typed<float>().size(), 0);
+  EXPECT_TRUE(span.is_empty());
+}
+
+TEST(generic_span, BufferAndSizeConstructor)
+{
+  int values[4] = {6, 7, 3, 2};
+  void *buffer = (void *)values;
+  GSpan span(CPPType::get<int32_t>(), buffer, 4);
+  EXPECT_EQ(span.size(), 4);
+  EXPECT_FALSE(span.is_empty());
+  EXPECT_EQ(span.typed<int>().size(), 4);
+  EXPECT_EQ(span[0], &values[0]);
+  EXPECT_EQ(span[1], &values[1]);
+  EXPECT_EQ(span[2], &values[2]);
+  EXPECT_EQ(span[3], &values[3]);
+}
+
+TEST(generic_mutable_span, TypeConstructor)
+{
+  GMutableSpan span(CPPType::get<int32_t>());
+  EXPECT_EQ(span.size(), 0);
+  EXPECT_TRUE(span.is_empty());
+}
+
+TEST(generic_mutable_span, BufferAndSizeConstructor)
+{
+  int values[4] = {4, 7, 3, 5};
+  void *buffer = (void *)values;
+  GMutableSpan span(CPPType::get<int32_t>(), buffer, 4);
+  EXPECT_EQ(span.size(), 4);
+  EXPECT_FALSE(span.is_empty());
+  EXPECT_EQ(span.typed<int>().size(), 4);
+  EXPECT_EQ(values[2], 3);
+  *(int *)span[2] = 10;
+  EXPECT_EQ(values[2], 10);
+  span.typed<int>()[2] = 20;
+  EXPECT_EQ(values[2], 20);
+}
+
+}  // namespace blender::tests