add pointer related API tests

Author: youge325

test/TensorUtilTest.cpp

@@ -0,0 +1,132 @@
+#include <ATen/ATen.h>
+#include <ATen/core/Tensor.h>
+#include <ATen/ops/ones.h>
+#include <gtest/gtest.h>
+#include <torch/all.h>
+
+#include <string>
+#include <vector>
+
+#include "../src/file_manager.h"
+
+extern paddle_api_test::ThreadSafeParam g_custom_param;
+
+namespace at {
+namespace test {
+
+using paddle_api_test::FileManerger;
+using paddle_api_test::ThreadSafeParam;
+
+class TensorUtilTest : public ::testing::Test {
+ protected:
+  void SetUp() override {
+    std::vector<int64_t> shape = {2, 3, 4};
+    tensor = at::ones(shape, at::kFloat);
+  }
+
+  at::Tensor tensor;
+};
+
+// 测试 toString
+TEST_F(TensorUtilTest, ToString) {
+  auto file_name = g_custom_param.get();
+  FileManerger file(file_name);
+  file.createFile();
+  std::string tensor_str = tensor.toString();
+  file << tensor_str << " ";
+  file.saveFile();
+}
+
+// 测试 is_contiguous_or_false
+TEST_F(TensorUtilTest, IsContiguousOrFalse) {
+  auto file_name = g_custom_param.get();
+  FileManerger file(file_name);
+  file.createFile();
+  file << std::to_string(tensor.is_contiguous_or_false()) << " ";
+
+  // 测试非连续的tensor
+  at::Tensor transposed = tensor.transpose(0, 2);
+  file << std::to_string(transposed.is_contiguous_or_false()) << " ";
+  file.saveFile();
+}
+
+// 测试 is_same
+TEST_F(TensorUtilTest, IsSame) {
+  auto file_name = g_custom_param.get();
+  FileManerger file(file_name);
+  file.createFile();
+
+  // Test that tensor is same as itself
+  file << std::to_string(tensor.is_same(tensor)) << " ";
+
+  // Test that two different tensors are not the same
+  at::Tensor other_tensor = at::ones({2, 3, 4}, at::kFloat);
+  file << std::to_string(tensor.is_same(other_tensor)) << " ";
+
+  // Test that a shallow copy points to the same tensor
+  at::Tensor shallow_copy = tensor;
+  file << std::to_string(tensor.is_same(shallow_copy)) << " ";
+
+  // Test that a view of the tensor
+  at::Tensor view = tensor.view({24});
+  file << std::to_string(tensor.is_same(view)) << " ";
+  file.saveFile();
+}
+
+// 测试 use_count
+TEST_F(TensorUtilTest, UseCount) {
+  auto file_name = g_custom_param.get();
+  FileManerger file(file_name);
+  file.createFile();
+
+  // Get initial use count
+  size_t initial_count = tensor.use_count();
+  file << std::to_string(initial_count) << " ";
+
+  // Create a copy, should increase use count
+  {
+    at::Tensor copy = tensor;
+    size_t new_count = tensor.use_count();
+    file << std::to_string(new_count) << " ";
+    file << std::to_string(new_count - initial_count) << " ";  // 差值
+  }
+
+  // After copy goes out of scope, use count should decrease
+  size_t final_count = tensor.use_count();
+  file << std::to_string(final_count) << " ";
+  file.saveFile();
+}
+
+// 测试 weak_use_count
+TEST_F(TensorUtilTest, WeakUseCount) {
+  auto file_name = g_custom_param.get();
+  FileManerger file(file_name);
+  file.createFile();
+
+  // Get initial weak use count
+  size_t initial_weak_count = tensor.weak_use_count();
+  file << std::to_string(initial_weak_count) << " ";
+  file.saveFile();
+}
+
+// 测试 print
+TEST_F(TensorUtilTest, Print) {
+  auto file_name = g_custom_param.get();
+  FileManerger file(file_name);
+  file.createFile();
+
+  // 创建一个小的tensor用于print测试
+  at::Tensor small_tensor = at::ones({2, 2}, at::kFloat);
+
+  // 使用 captureStdout 捕获 print() 的输出
+  file.captureStdout([&]() {
+    tensor.print();
+    small_tensor.print();
+  });
+
+  file << std::to_string(1) << " ";  // 如果执行到这里说明print()没有崩溃
+  file.saveFile();
+}
+
+}  // namespace test
+}  // namespace at