Method TestWithSchemaFactory

cpp/src/arrow/c/bridge_test.cc:3711–3734

  template <typename SchemaFactory>
  void TestWithSchemaFactory(SchemaFactory&& factory) {
    std::shared_ptr<Schema> schema, actual;
    struct ArrowSchema c_schema {};  // zeroed
    SchemaExportGuard schema_guard(&c_schema);

    auto orig_bytes = pool_->bytes_allocated();

    schema = factory();
    auto schema_use_count = schema.use_count();
    ASSERT_OK(ExportSchema(*schema, &c_schema));
    ASSERT_GT(pool_->bytes_allocated(), orig_bytes);
    // Export stores no reference to the schema
    ASSERT_EQ(schema_use_count, schema.use_count());
    schema.reset();

    // Recreate the schema
    ASSERT_OK_AND_ASSIGN(actual, ImportSchema(&c_schema));
    schema = factory();
    AssertSchemaEqual(*schema, *actual, /*check_metadata=*/true);
    schema.reset();
    actual.reset();

    ASSERT_EQ(pool_->bytes_allocated(), orig_bytes);
  }

 protected:
  MemoryPool* pool_;