1 files changed, 385 insertions, 0 deletions
diff --git a/source/blender/functions/tests/FN_multi_function_test.cc b/source/blender/functions/tests/FN_multi_function_test.cc
new file mode 100644
index 00000000000..6acb6e22b01
--- /dev/null
+++ b/source/blender/functions/tests/FN_multi_function_test.cc
@@ -0,0 +1,385 @@
+/* Apache License, Version 2.0 */
+
+#include "testing/testing.h"
+
+#include "FN_multi_function.hh"
+#include "FN_multi_function_builder.hh"
+
+namespace blender::fn::tests {
+
+class AddFunction : public MultiFunction {
+ public:
+  AddFunction()
+  {
+    MFSignatureBuilder builder = this->get_builder("Add");
+    builder.single_input<int>("A");
+    builder.single_input<int>("B");
+    builder.single_output<int>("Result");
+  }
+
+  void call(IndexMask mask, MFParams params, MFContext UNUSED(context)) const override
+  {
+    VSpan<int> a = params.readonly_single_input<int>(0, "A");
+    VSpan<int> b = params.readonly_single_input<int>(1, "B");
+    MutableSpan<int> result = params.uninitialized_single_output<int>(2, "Result");
+
+    for (int64_t i : mask) {
+      result[i] = a[i] + b[i];
+    }
+  }
+};
+
+TEST(multi_function, AddFunction)
+{
+  AddFunction fn;
+
+  Array<int> input1 = {4, 5, 6};
+  Array<int> input2 = {10, 20, 30};
+  Array<int> output(3, -1);
+
+  MFParamsBuilder params(fn, 3);
+  params.add_readonly_single_input(input1.as_span());
+  params.add_readonly_single_input(input2.as_span());
+  params.add_uninitialized_single_output(output.as_mutable_span());
+
+  MFContextBuilder context;
+
+  fn.call({0, 2}, params, context);
+
+  EXPECT_EQ(output[0], 14);
+  EXPECT_EQ(output[1], -1);
+  EXPECT_EQ(output[2], 36);
+}
+
+class AddPrefixFunction : public MultiFunction {
+ public:
+  AddPrefixFunction()
+  {
+    MFSignatureBuilder builder = this->get_builder("Add Prefix");
+    builder.single_input<std::string>("Prefix");
+    builder.single_mutable<std::string>("Strings");
+  }
+
+  void call(IndexMask mask, MFParams params, MFContext UNUSED(context)) const override
+  {
+    VSpan<std::string> prefixes = params.readonly_single_input<std::string>(0, "Prefix");
+    MutableSpan<std::string> strings = params.single_mutable<std::string>(1, "Strings");
+
+    for (int64_t i : mask) {
+      strings[i] = prefixes[i] + strings[i];
+    }
+  }
+};
+
+TEST(multi_function, AddPrefixFunction)
+{
+  AddPrefixFunction fn;
+
+  Array<std::string> strings = {
+      "Hello",
+      "World",
+      "This is a test",
+      "Another much longer string to trigger an allocation",
+  };
+
+  std::string prefix = "AB";
+
+  MFParamsBuilder params(fn, strings.size());
+  params.add_readonly_single_input(&prefix);
+  params.add_single_mutable(strings.as_mutable_span());
+
+  MFContextBuilder context;
+
+  fn.call({0, 2, 3}, params, context);
+
+  EXPECT_EQ(strings[0], "ABHello");
+  EXPECT_EQ(strings[1], "World");
+  EXPECT_EQ(strings[2], "ABThis is a test");
+  EXPECT_EQ(strings[3], "ABAnother much longer string to trigger an allocation");
+}
+
+class CreateRangeFunction : public MultiFunction {
+ public:
+  CreateRangeFunction()
+  {
+    MFSignatureBuilder builder = this->get_builder("Create Range");
+    builder.single_input<uint>("Size");
+    builder.vector_output<uint>("Range");
+  }
+
+  void call(IndexMask mask, MFParams params, MFContext UNUSED(context)) const override
+  {
+    VSpan<uint> sizes = params.readonly_single_input<uint>(0, "Size");
+    GVectorArrayRef<uint> ranges = params.vector_output<uint>(1, "Range");
+
+    for (int64_t i : mask) {
+      uint size = sizes[i];
+      for (uint j : IndexRange(size)) {
+        ranges.append(i, j);
+      }
+    }
+  }
+};
+
+TEST(multi_function, CreateRangeFunction)
+{
+  CreateRangeFunction fn;
+
+  GVectorArray ranges(CPPType::get<int32_t>(), 5);
+  GVectorArrayRef<uint> ranges_ref(ranges);
+  Array<uint> sizes = {3, 0, 6, 1, 4};
+
+  MFParamsBuilder params(fn, ranges.size());
+  params.add_readonly_single_input(sizes.as_span());
+  params.add_vector_output(ranges);
+
+  MFContextBuilder context;
+
+  fn.call({0, 1, 2, 3}, params, context);
+
+  EXPECT_EQ(ranges_ref[0].size(), 3);
+  EXPECT_EQ(ranges_ref[1].size(), 0);
+  EXPECT_EQ(ranges_ref[2].size(), 6);
+  EXPECT_EQ(ranges_ref[3].size(), 1);
+  EXPECT_EQ(ranges_ref[4].size(), 0);
+
+  EXPECT_EQ(ranges_ref[0][0], 0);
+  EXPECT_EQ(ranges_ref[0][1], 1);
+  EXPECT_EQ(ranges_ref[0][2], 2);
+  EXPECT_EQ(ranges_ref[2][0], 0);
+  EXPECT_EQ(ranges_ref[2][1], 1);
+}
+
+class GenericAppendFunction : public MultiFunction {
+ public:
+  GenericAppendFunction(const CPPType &type)
+  {
+    MFSignatureBuilder builder = this->get_builder("Append");
+    builder.vector_mutable("Vector", type);
+    builder.single_input("Value", type);
+  }
+
+  void call(IndexMask mask, MFParams params, MFContext UNUSED(context)) const override
+  {
+    GVectorArray &vectors = params.vector_mutable(0, "Vector");
+    GVSpan values = params.readonly_single_input(1, "Value");
+
+    for (int64_t i : mask) {
+      vectors.append(i, values[i]);
+    }
+  }
+};
+
+TEST(multi_function, GenericAppendFunction)
+{
+  GenericAppendFunction fn(CPPType::get<int32_t>());
+
+  GVectorArray vectors(CPPType::get<int32_t>(), 4);
+  GVectorArrayRef<int> vectors_ref(vectors);
+  vectors_ref.append(0, 1);
+  vectors_ref.append(0, 2);
+  vectors_ref.append(2, 6);
+  Array<int> values = {5, 7, 3, 1};
+
+  MFParamsBuilder params(fn, vectors.size());
+  params.add_vector_mutable(vectors);
+  params.add_readonly_single_input(values.as_span());
+
+  MFContextBuilder context;
+
+  fn.call(IndexRange(vectors.size()), params, context);
+
+  EXPECT_EQ(vectors_ref[0].size(), 3);
+  EXPECT_EQ(vectors_ref[1].size(), 1);
+  EXPECT_EQ(vectors_ref[2].size(), 2);
+  EXPECT_EQ(vectors_ref[3].size(), 1);
+
+  EXPECT_EQ(vectors_ref[0][0], 1);
+  EXPECT_EQ(vectors_ref[0][1], 2);
+  EXPECT_EQ(vectors_ref[0][2], 5);
+  EXPECT_EQ(vectors_ref[1][0], 7);
+  EXPECT_EQ(vectors_ref[2][0], 6);
+  EXPECT_EQ(vectors_ref[2][1], 3);
+  EXPECT_EQ(vectors_ref[3][0], 1);
+}
+
+TEST(multi_function, CustomMF_SI_SO)
+{
+  CustomMF_SI_SO<std::string, uint> fn("strlen",
+                                       [](const std::string &str) { return str.size(); });
+
+  Array<std::string> strings = {"hello", "world", "test", "another test"};
+  Array<uint> sizes(strings.size(), 0);
+
+  MFParamsBuilder params(fn, strings.size());
+  params.add_readonly_single_input(strings.as_span());
+  params.add_uninitialized_single_output(sizes.as_mutable_span());
+
+  MFContextBuilder context;
+
+  fn.call(IndexRange(strings.size()), params, context);
+
+  EXPECT_EQ(sizes[0], 5);
+  EXPECT_EQ(sizes[1], 5);
+  EXPECT_EQ(sizes[2], 4);
+  EXPECT_EQ(sizes[3], 12);
+}
+
+TEST(multi_function, CustomMF_SI_SI_SO)
+{
+  CustomMF_SI_SI_SO<int, int, int> fn("mul", [](int a, int b) { return a * b; });
+
+  Array<int> values_a = {4, 6, 8, 9};
+  int value_b = 10;
+  Array<int> outputs(values_a.size(), -1);
+
+  MFParamsBuilder params(fn, values_a.size());
+  params.add_readonly_single_input(values_a.as_span());
+  params.add_readonly_single_input(&value_b);
+  params.add_uninitialized_single_output(outputs.as_mutable_span());
+
+  MFContextBuilder context;
+
+  fn.call({0, 1, 3}, params, context);
+
+  EXPECT_EQ(outputs[0], 40);
+  EXPECT_EQ(outputs[1], 60);
+  EXPECT_EQ(outputs[2], -1);
+  EXPECT_EQ(outputs[3], 90);
+}
+
+TEST(multi_function, CustomMF_SI_SI_SI_SO)
+{
+  CustomMF_SI_SI_SI_SO<int, std::string, bool, uint> fn{
+      "custom",
+      [](int a, const std::string &b, bool c) { return (uint)((uint)a + b.size() + (uint)c); }};
+
+  Array<int> values_a = {5, 7, 3, 8};
+  Array<std::string> values_b = {"hello", "world", "another", "test"};
+  Array<bool> values_c = {true, false, false, true};
+  Array<uint> outputs(values_a.size(), 0);
+
+  MFParamsBuilder params(fn, values_a.size());
+  params.add_readonly_single_input(values_a.as_span());
+  params.add_readonly_single_input(values_b.as_span());
+  params.add_readonly_single_input(values_c.as_span());
+  params.add_uninitialized_single_output(outputs.as_mutable_span());
+
+  MFContextBuilder context;
+
+  fn.call({1, 2, 3}, params, context);
+
+  EXPECT_EQ(outputs[0], 0);
+  EXPECT_EQ(outputs[1], 12);
+  EXPECT_EQ(outputs[2], 10);
+  EXPECT_EQ(outputs[3], 13);
+}
+
+TEST(multi_function, CustomMF_SM)
+{
+  CustomMF_SM<std::string> fn("AddSuffix", [](std::string &value) { value += " test"; });
+
+  Array<std::string> values = {"a", "b", "c", "d", "e"};
+
+  MFParamsBuilder params(fn, values.size());
+  params.add_single_mutable(values.as_mutable_span());
+
+  MFContextBuilder context;
+
+  fn.call({1, 2, 3}, params, context);
+
+  EXPECT_EQ(values[0], "a");
+  EXPECT_EQ(values[1], "b test");
+  EXPECT_EQ(values[2], "c test");
+  EXPECT_EQ(values[3], "d test");
+  EXPECT_EQ(values[4], "e");
+}
+
+TEST(multi_function, CustomMF_Constant)
+{
+  CustomMF_Constant<int> fn{42};
+
+  Array<int> outputs(4, 0);
+
+  MFParamsBuilder params(fn, outputs.size());
+  params.add_uninitialized_single_output(outputs.as_mutable_span());
+
+  MFContextBuilder context;
+
+  fn.call({0, 2, 3}, params, context);
+
+  EXPECT_EQ(outputs[0], 42);
+  EXPECT_EQ(outputs[1], 0);
+  EXPECT_EQ(outputs[2], 42);
+  EXPECT_EQ(outputs[3], 42);
+}
+
+TEST(multi_function, CustomMF_GenericConstant)
+{
+  int value = 42;
+  CustomMF_GenericConstant fn{CPPType::get<int32_t>(), (const void *)&value};
+  EXPECT_EQ(fn.param_name(0), "42");
+
+  Array<int> outputs(4, 0);
+
+  MFParamsBuilder params(fn, outputs.size());
+  params.add_uninitialized_single_output(outputs.as_mutable_span());
+
+  MFContextBuilder context;
+
+  fn.call({0, 1, 2}, params, context);
+
+  EXPECT_EQ(outputs[0], 42);
+  EXPECT_EQ(outputs[1], 42);
+  EXPECT_EQ(outputs[2], 42);
+  EXPECT_EQ(outputs[3], 0);
+}
+
+TEST(multi_function, CustomMF_GenericConstantArray)
+{
+  std::array<int, 4> values = {3, 4, 5, 6};
+  CustomMF_GenericConstantArray fn{GSpan(Span(values))};
+  EXPECT_EQ(fn.param_name(0), "[3, 4, 5, 6, ]");
+
+  GVectorArray g_vector_array{CPPType::get<int32_t>(), 4};
+  GVectorArrayRef<int> vector_array = g_vector_array;
+
+  MFParamsBuilder params(fn, g_vector_array.size());
+  params.add_vector_output(g_vector_array);
+
+  MFContextBuilder context;
+
+  fn.call({1, 2, 3}, params, context);
+
+  EXPECT_EQ(vector_array[0].size(), 0);
+  EXPECT_EQ(vector_array[1].size(), 4);
+  EXPECT_EQ(vector_array[2].size(), 4);
+  EXPECT_EQ(vector_array[3].size(), 4);
+  for (int i = 1; i < 4; i++) {
+    EXPECT_EQ(vector_array[i][0], 3);
+    EXPECT_EQ(vector_array[i][1], 4);
+    EXPECT_EQ(vector_array[i][2], 5);
+    EXPECT_EQ(vector_array[i][3], 6);
+  }
+}
+
+TEST(multi_function, CustomMF_Convert)
+{
+  CustomMF_Convert<float, int> fn;
+
+  Array<float> inputs = {5.4f, 7.1f, 9.0f};
+  Array<int> outputs(inputs.size(), 0);
+
+  MFParamsBuilder params(fn, inputs.size());
+  params.add_readonly_single_input(inputs.as_span());
+  params.add_uninitialized_single_output(outputs.as_mutable_span());
+
+  MFContextBuilder context;
+  fn.call({0, 2}, params, context);
+
+  EXPECT_EQ(outputs[0], 5);
+  EXPECT_EQ(outputs[1], 0);
+  EXPECT_EQ(outputs[2], 9);
+}
+
+}  // namespace blender::fn::tests