Add tests for ASTNode struct

ASTNode will require a bunch of rework

tests/CMakeLists.txt

@@ -7,6 +7,7 @@ add_executable (unit_tests
   test_ArrayUtils.cpp
   test_ASTBuilder.cpp
   test_ASTDotPrinter.cpp
+  test_ASTNode.cpp
   test_ASTNodeAffectationExpressionBuilder.cpp
   test_ASTNodeBinaryOperatorExpressionBuilder.cpp
   test_ASTNodeDataType.cpp

tests/test_ASTNode.cpp

+#include <catch2/catch.hpp>
+
+#include <ASTNode.hpp>
+#include <node_processor/FakeProcessor.hpp>
+
+TEST_CASE("ASTNode", "[language]")
+{
+  rang::setControlMode(rang::control::Off);
+  SECTION("execute")
+  {
+    ASTNode ast_node;
+    ExecUntilBreakOrContinue exec_policy;
+
+#ifndef NDEBUG
+    REQUIRE_THROWS(ast_node.execute(exec_policy));
+#endif   // NDEBUG
+
+    ast_node.m_node_processor = std::make_unique<FakeProcessor>();
+
+    REQUIRE_NOTHROW(ast_node.execute(exec_policy));
+  }
+}