feat: add analysis model objects

tests/element/element_base_test.cpp

@@ -0,0 +1,51 @@
+#include "fesa/element/Element.hpp"
+
+#include <array>
+#include <memory>
+
+namespace {
+
+using fesa::element::ElementId;
+using fesa::element::ElementType;
+using fesa::element::NodeId;
+using fesa::element::PropertyId;
+
+int require(bool condition) {
+    return condition ? 0 : 1;
+}
+
+class TestElement final : public fesa::element::Element {
+public:
+    ElementId id() const noexcept override { return 100; }
+    ElementType type() const noexcept override { return ElementType::Mitc4; }
+    std::size_t nodeCount() const noexcept override { return connectivity_.size(); }
+    const std::array<NodeId, 4>& connectivity() const noexcept override { return connectivity_; }
+    PropertyId propertyId() const noexcept override { return 500; }
+
+private:
+    std::array<NodeId, 4> connectivity_{1, 2, 3, 4};
+};
+
+} // namespace
+
+int run_element_base_tests() {
+    std::unique_ptr<fesa::element::Element> owned = std::make_unique<TestElement>();
+    const fesa::element::Element& element = *owned;
+
+    if (const int result = require(element.id() == 100); result != 0) {
+        return result;
+    }
+    if (const int result = require(element.type() == fesa::core::ElementType::Mitc4); result != 0) {
+        return result;
+    }
+    if (const int result = require(element.nodeCount() == 4); result != 0) {
+        return result;
+    }
+    if (const int result = require(element.connectivity()[0] == 1); result != 0) {
+        return result;
+    }
+    if (const int result = require(element.connectivity()[3] == 4); result != 0) {
+        return result;
+    }
+    return require(element.propertyId() == 500);
+}