Move and organize tests into subfolders

3 files changed, 1305 insertions, 0 deletions

diff --git a/tests/core/object/test_class_db.h b/tests/core/object/test_class_db.h
new file mode 100644
index 0000000000..4b27905485
--- /dev/null
+++ b/tests/core/object/test_class_db.h
@@ -0,0 +1,865 @@
+/*************************************************************************/
+/*  test_class_db.h                                                      */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef TEST_CLASS_DB_H
+#define TEST_CLASS_DB_H
+
+#include "core/core_bind.h"
+#include "core/core_constants.h"
+#include "core/object/class_db.h"
+
+#include "tests/test_macros.h"
+
+namespace TestClassDB {
+
+struct TypeReference {
+	StringName name;
+	bool is_enum = false;
+};
+
+struct ConstantData {
+	String name;
+	int value = 0;
+};
+
+struct EnumData {
+	StringName name;
+	List<ConstantData> constants;
+
+	_FORCE_INLINE_ bool operator==(const EnumData &p_enum) const {
+		return p_enum.name == name;
+	}
+};
+
+struct PropertyData {
+	StringName name;
+	int index = 0;
+
+	StringName getter;
+	StringName setter;
+};
+
+struct ArgumentData {
+	TypeReference type;
+	String name;
+	bool has_defval = false;
+	Variant defval;
+};
+
+struct MethodData {
+	StringName name;
+	TypeReference return_type;
+	List<ArgumentData> arguments;
+	bool is_virtual = false;
+	bool is_vararg = false;
+};
+
+struct SignalData {
+	StringName name;
+	List<ArgumentData> arguments;
+};
+
+struct ExposedClass {
+	StringName name;
+	StringName base;
+
+	bool is_singleton = false;
+	bool is_instantiable = false;
+	bool is_ref_counted = false;
+
+	ClassDB::APIType api_type;
+
+	List<ConstantData> constants;
+	List<EnumData> enums;
+	List<PropertyData> properties;
+	List<MethodData> methods;
+	List<SignalData> signals_;
+
+	const PropertyData *find_property_by_name(const StringName &p_name) const {
+		for (const PropertyData &E : properties) {
+			if (E.name == p_name) {
+				return &E;
+			}
+		}
+
+		return nullptr;
+	}
+
+	const MethodData *find_method_by_name(const StringName &p_name) const {
+		for (const MethodData &E : methods) {
+			if (E.name == p_name) {
+				return &E;
+			}
+		}
+
+		return nullptr;
+	}
+};
+
+struct NamesCache {
+	StringName variant_type = StaticCString::create("Variant");
+	StringName object_class = StaticCString::create("Object");
+	StringName ref_counted_class = StaticCString::create("RefCounted");
+	StringName string_type = StaticCString::create("String");
+	StringName string_name_type = StaticCString::create("StringName");
+	StringName node_path_type = StaticCString::create("NodePath");
+	StringName bool_type = StaticCString::create("bool");
+	StringName int_type = StaticCString::create("int");
+	StringName float_type = StaticCString::create("float");
+	StringName void_type = StaticCString::create("void");
+	StringName vararg_stub_type = StaticCString::create("@VarArg@");
+	StringName vector2_type = StaticCString::create("Vector2");
+	StringName rect2_type = StaticCString::create("Rect2");
+	StringName vector3_type = StaticCString::create("Vector3");
+
+	// Object not included as it must be checked for all derived classes
+	static constexpr int nullable_types_count = 17;
+	StringName nullable_types[nullable_types_count] = {
+		string_type,
+		string_name_type,
+		node_path_type,
+
+		StaticCString::create(_STR(Array)),
+		StaticCString::create(_STR(Dictionary)),
+		StaticCString::create(_STR(Callable)),
+		StaticCString::create(_STR(Signal)),
+
+		StaticCString::create(_STR(PackedByteArray)),
+		StaticCString::create(_STR(PackedInt32Array)),
+		StaticCString::create(_STR(PackedInt64rray)),
+		StaticCString::create(_STR(PackedFloat32Array)),
+		StaticCString::create(_STR(PackedFloat64Array)),
+		StaticCString::create(_STR(PackedStringArray)),
+		StaticCString::create(_STR(PackedVector2Array)),
+		StaticCString::create(_STR(PackedVector3Array)),
+		StaticCString::create(_STR(PackedColorArray)),
+	};
+
+	bool is_nullable_type(const StringName &p_type) const {
+		for (int i = 0; i < nullable_types_count; i++) {
+			if (p_type == nullable_types[i]) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+};
+
+typedef OrderedHashMap<StringName, ExposedClass> ExposedClasses;
+
+struct Context {
+	Vector<StringName> enum_types;
+	Vector<StringName> builtin_types;
+	ExposedClasses exposed_classes;
+	List<EnumData> global_enums;
+	NamesCache names_cache;
+
+	const ExposedClass *find_exposed_class(const StringName &p_name) const {
+		ExposedClasses::ConstElement elem = exposed_classes.find(p_name);
+		return elem ? &elem.value() : nullptr;
+	}
+
+	const ExposedClass *find_exposed_class(const TypeReference &p_type_ref) const {
+		ExposedClasses::ConstElement elem = exposed_classes.find(p_type_ref.name);
+		return elem ? &elem.value() : nullptr;
+	}
+
+	bool has_type(const TypeReference &p_type_ref) const {
+		if (builtin_types.find(p_type_ref.name) >= 0) {
+			return true;
+		}
+
+		if (p_type_ref.is_enum) {
+			if (enum_types.find(p_type_ref.name) >= 0) {
+				return true;
+			}
+
+			// Enum not found. Most likely because none of its constants were bound, so it's empty. That's fine. Use int instead.
+			return builtin_types.find(names_cache.int_type);
+		}
+
+		return false;
+	}
+};
+
+bool arg_default_value_is_assignable_to_type(const Context &p_context, const Variant &p_val, const TypeReference &p_arg_type, String *r_err_msg = nullptr) {
+	if (p_arg_type.name == p_context.names_cache.variant_type) {
+		// Variant can take anything
+		return true;
+	}
+
+	switch (p_val.get_type()) {
+		case Variant::NIL:
+			return p_context.find_exposed_class(p_arg_type) ||
+					p_context.names_cache.is_nullable_type(p_arg_type.name);
+		case Variant::BOOL:
+			return p_arg_type.name == p_context.names_cache.bool_type;
+		case Variant::INT:
+			return p_arg_type.name == p_context.names_cache.int_type ||
+					p_arg_type.name == p_context.names_cache.float_type ||
+					p_arg_type.is_enum;
+		case Variant::FLOAT:
+			return p_arg_type.name == p_context.names_cache.float_type;
+		case Variant::STRING:
+		case Variant::STRING_NAME:
+			return p_arg_type.name == p_context.names_cache.string_type ||
+					p_arg_type.name == p_context.names_cache.string_name_type ||
+					p_arg_type.name == p_context.names_cache.node_path_type;
+		case Variant::NODE_PATH:
+			return p_arg_type.name == p_context.names_cache.node_path_type;
+		case Variant::TRANSFORM3D:
+		case Variant::TRANSFORM2D:
+		case Variant::BASIS:
+		case Variant::QUATERNION:
+		case Variant::PLANE:
+		case Variant::AABB:
+		case Variant::COLOR:
+		case Variant::VECTOR2:
+		case Variant::RECT2:
+		case Variant::VECTOR3:
+		case Variant::RID:
+		case Variant::ARRAY:
+		case Variant::DICTIONARY:
+		case Variant::PACKED_BYTE_ARRAY:
+		case Variant::PACKED_INT32_ARRAY:
+		case Variant::PACKED_INT64_ARRAY:
+		case Variant::PACKED_FLOAT32_ARRAY:
+		case Variant::PACKED_FLOAT64_ARRAY:
+		case Variant::PACKED_STRING_ARRAY:
+		case Variant::PACKED_VECTOR2_ARRAY:
+		case Variant::PACKED_VECTOR3_ARRAY:
+		case Variant::PACKED_COLOR_ARRAY:
+		case Variant::CALLABLE:
+		case Variant::SIGNAL:
+			return p_arg_type.name == Variant::get_type_name(p_val.get_type());
+		case Variant::OBJECT:
+			return p_context.find_exposed_class(p_arg_type);
+		case Variant::VECTOR2I:
+			return p_arg_type.name == p_context.names_cache.vector2_type ||
+					p_arg_type.name == Variant::get_type_name(p_val.get_type());
+		case Variant::RECT2I:
+			return p_arg_type.name == p_context.names_cache.rect2_type ||
+					p_arg_type.name == Variant::get_type_name(p_val.get_type());
+		case Variant::VECTOR3I:
+			return p_arg_type.name == p_context.names_cache.vector3_type ||
+					p_arg_type.name == Variant::get_type_name(p_val.get_type());
+		default:
+			if (r_err_msg) {
+				*r_err_msg = "Unexpected Variant type: " + itos(p_val.get_type());
+			}
+			break;
+	}
+
+	return false;
+}
+
+void validate_property(const Context &p_context, const ExposedClass &p_class, const PropertyData &p_prop) {
+	const MethodData *setter = p_class.find_method_by_name(p_prop.setter);
+
+	// Search it in base classes too
+	const ExposedClass *top = &p_class;
+	while (!setter && top->base != StringName()) {
+		top = p_context.find_exposed_class(top->base);
+		TEST_FAIL_COND(!top, "Class not found '", top->base, "'. Inherited by '", top->name, "'.");
+		setter = top->find_method_by_name(p_prop.setter);
+	}
+
+	const MethodData *getter = p_class.find_method_by_name(p_prop.getter);
+
+	// Search it in base classes too
+	top = &p_class;
+	while (!getter && top->base != StringName()) {
+		top = p_context.find_exposed_class(top->base);
+		TEST_FAIL_COND(!top, "Class not found '", top->base, "'. Inherited by '", top->name, "'.");
+		getter = top->find_method_by_name(p_prop.getter);
+	}
+
+	TEST_FAIL_COND((!setter && !getter),
+			"Couldn't find neither the setter nor the getter for property: '", p_class.name, ".", String(p_prop.name), "'.");
+
+	if (setter) {
+		int setter_argc = p_prop.index != -1 ? 2 : 1;
+		TEST_FAIL_COND(setter->arguments.size() != setter_argc,
+				"Invalid property setter argument count: '", p_class.name, ".", String(p_prop.name), "'.");
+	}
+
+	if (getter) {
+		int getter_argc = p_prop.index != -1 ? 1 : 0;
+		TEST_FAIL_COND(getter->arguments.size() != getter_argc,
+				"Invalid property setter argument count: '", p_class.name, ".", String(p_prop.name), "'.");
+	}
+
+	if (getter && setter) {
+		const ArgumentData &setter_first_arg = setter->arguments.back()->get();
+		if (getter->return_type.name != setter_first_arg.type.name) {
+			// Special case for Node::set_name
+			bool whitelisted = getter->return_type.name == p_context.names_cache.string_name_type &&
+					setter_first_arg.type.name == p_context.names_cache.string_type;
+
+			TEST_FAIL_COND(!whitelisted,
+					"Return type from getter doesn't match first argument of setter, for property: '", p_class.name, ".", String(p_prop.name), "'.");
+		}
+	}
+
+	const TypeReference &prop_type_ref = getter ? getter->return_type : setter->arguments.back()->get().type;
+
+	const ExposedClass *prop_class = p_context.find_exposed_class(prop_type_ref);
+	if (prop_class) {
+		TEST_COND(prop_class->is_singleton,
+				"Property type is a singleton: '", p_class.name, ".", String(p_prop.name), "'.");
+
+		if (p_class.api_type == ClassDB::API_CORE) {
+			TEST_COND(prop_class->api_type == ClassDB::API_EDITOR,
+					"Property '", p_class.name, ".", p_prop.name, "' has type '", prop_class->name,
+					"' from the editor API. Core API cannot have dependencies on the editor API.");
+		}
+	} else {
+		// Look for types that don't inherit Object
+		TEST_FAIL_COND(!p_context.has_type(prop_type_ref),
+				"Property type '", prop_type_ref.name, "' not found: '", p_class.name, ".", String(p_prop.name), "'.");
+	}
+
+	if (getter) {
+		if (p_prop.index != -1) {
+			const ArgumentData &idx_arg = getter->arguments.front()->get();
+			if (idx_arg.type.name != p_context.names_cache.int_type) {
+				// If not an int, it can be an enum
+				TEST_COND(p_context.enum_types.find(idx_arg.type.name) < 0,
+						"Invalid type '", idx_arg.type.name, "' for index argument of property getter: '", p_class.name, ".", String(p_prop.name), "'.");
+			}
+		}
+	}
+
+	if (setter) {
+		if (p_prop.index != -1) {
+			const ArgumentData &idx_arg = setter->arguments.front()->get();
+			if (idx_arg.type.name != p_context.names_cache.int_type) {
+				// Assume the index parameter is an enum
+				// If not an int, it can be an enum
+				TEST_COND(p_context.enum_types.find(idx_arg.type.name) < 0,
+						"Invalid type '", idx_arg.type.name, "' for index argument of property setter: '", p_class.name, ".", String(p_prop.name), "'.");
+			}
+		}
+	}
+}
+
+void validate_method(const Context &p_context, const ExposedClass &p_class, const MethodData &p_method) {
+	if (p_method.return_type.name != StringName()) {
+		const ExposedClass *return_class = p_context.find_exposed_class(p_method.return_type);
+		if (return_class) {
+			TEST_COND(return_class->is_singleton,
+					"Method return type is a singleton: '", p_class.name, ".", p_method.name, "'.");
+
+			if (p_class.api_type == ClassDB::API_CORE) {
+				TEST_COND(return_class->api_type == ClassDB::API_EDITOR,
+						"Method '", p_class.name, ".", p_method.name, "' has return type '", return_class->name,
+						"' from the editor API. Core API cannot have dependencies on the editor API.");
+			}
+		} else {
+			// Look for types that don't inherit Object
+			TEST_FAIL_COND(!p_context.has_type(p_method.return_type),
+					"Method return type '", p_method.return_type.name, "' not found: '", p_class.name, ".", p_method.name, "'.");
+		}
+	}
+
+	for (const ArgumentData &F : p_method.arguments) {
+		const ArgumentData &arg = F;
+
+		const ExposedClass *arg_class = p_context.find_exposed_class(arg.type);
+		if (arg_class) {
+			TEST_COND(arg_class->is_singleton,
+					"Argument type is a singleton: '", arg.name, "' of method '", p_class.name, ".", p_method.name, "'.");
+
+			if (p_class.api_type == ClassDB::API_CORE) {
+				TEST_COND(arg_class->api_type == ClassDB::API_EDITOR,
+						"Argument '", arg.name, "' of method '", p_class.name, ".", p_method.name, "' has type '",
+						arg_class->name, "' from the editor API. Core API cannot have dependencies on the editor API.");
+			}
+		} else {
+			// Look for types that don't inherit Object
+			TEST_FAIL_COND(!p_context.has_type(arg.type),
+					"Argument type '", arg.type.name, "' not found: '", arg.name, "' of method", p_class.name, ".", p_method.name, "'.");
+		}
+
+		if (arg.has_defval) {
+			String type_error_msg;
+			bool arg_defval_assignable_to_type = arg_default_value_is_assignable_to_type(p_context, arg.defval, arg.type, &type_error_msg);
+			String err_msg = vformat("Invalid default value for parameter '%s' of method '%s.%s'.", arg.name, p_class.name, p_method.name);
+			if (!type_error_msg.is_empty()) {
+				err_msg += " " + type_error_msg;
+			}
+			TEST_COND(!arg_defval_assignable_to_type, err_msg.utf8().get_data());
+		}
+	}
+}
+
+void validate_signal(const Context &p_context, const ExposedClass &p_class, const SignalData &p_signal) {
+	for (const ArgumentData &F : p_signal.arguments) {
+		const ArgumentData &arg = F;
+
+		const ExposedClass *arg_class = p_context.find_exposed_class(arg.type);
+		if (arg_class) {
+			TEST_COND(arg_class->is_singleton,
+					"Argument class is a singleton: '", arg.name, "' of signal '", p_class.name, ".", p_signal.name, "'.");
+
+			if (p_class.api_type == ClassDB::API_CORE) {
+				TEST_COND(arg_class->api_type == ClassDB::API_EDITOR,
+						"Argument '", arg.name, "' of signal '", p_class.name, ".", p_signal.name, "' has type '",
+						arg_class->name, "' from the editor API. Core API cannot have dependencies on the editor API.");
+			}
+		} else {
+			// Look for types that don't inherit Object
+			TEST_FAIL_COND(!p_context.has_type(arg.type),
+					"Argument type '", arg.type.name, "' not found: '", arg.name, "' of signal", p_class.name, ".", p_signal.name, "'.");
+		}
+	}
+}
+
+void validate_class(const Context &p_context, const ExposedClass &p_exposed_class) {
+	bool is_derived_type = p_exposed_class.base != StringName();
+
+	if (!is_derived_type) {
+		// Asserts about the base Object class
+		TEST_FAIL_COND(p_exposed_class.name != p_context.names_cache.object_class,
+				"Class '", p_exposed_class.name, "' has no base class.");
+		TEST_FAIL_COND(!p_exposed_class.is_instantiable,
+				"Object class is not instantiable.");
+		TEST_FAIL_COND(p_exposed_class.api_type != ClassDB::API_CORE,
+				"Object class is API is not API_CORE.");
+		TEST_FAIL_COND(p_exposed_class.is_singleton,
+				"Object class is registered as a singleton.");
+	}
+
+	TEST_FAIL_COND((p_exposed_class.is_singleton && p_exposed_class.base != p_context.names_cache.object_class),
+			"Singleton base class '", String(p_exposed_class.base), "' is not Object, for class '", p_exposed_class.name, "'.");
+
+	TEST_FAIL_COND((is_derived_type && !p_context.exposed_classes.has(p_exposed_class.base)),
+			"Base type '", p_exposed_class.base.operator String(), "' does not exist, for class '", p_exposed_class.name, "'.");
+
+	for (const PropertyData &F : p_exposed_class.properties) {
+		validate_property(p_context, p_exposed_class, F);
+	}
+
+	for (const MethodData &F : p_exposed_class.methods) {
+		validate_method(p_context, p_exposed_class, F);
+	}
+
+	for (const SignalData &F : p_exposed_class.signals_) {
+		validate_signal(p_context, p_exposed_class, F);
+	}
+}
+
+void add_exposed_classes(Context &r_context) {
+	List<StringName> class_list;
+	ClassDB::get_class_list(&class_list);
+	class_list.sort_custom<StringName::AlphCompare>();
+
+	while (class_list.size()) {
+		StringName class_name = class_list.front()->get();
+
+		ClassDB::APIType api_type = ClassDB::get_api_type(class_name);
+
+		if (api_type == ClassDB::API_NONE) {
+			class_list.pop_front();
+			continue;
+		}
+
+		if (!ClassDB::is_class_exposed(class_name)) {
+			MESSAGE(vformat("Ignoring class '%s' because it's not exposed.", class_name).utf8().get_data());
+			class_list.pop_front();
+			continue;
+		}
+
+		if (!ClassDB::is_class_enabled(class_name)) {
+			MESSAGE(vformat("Ignoring class '%s' because it's not enabled.", class_name).utf8().get_data());
+			class_list.pop_front();
+			continue;
+		}
+
+		ClassDB::ClassInfo *class_info = ClassDB::classes.getptr(class_name);
+
+		ExposedClass exposed_class;
+		exposed_class.name = class_name;
+		exposed_class.api_type = api_type;
+		exposed_class.is_singleton = Engine::get_singleton()->has_singleton(class_name);
+		exposed_class.is_instantiable = class_info->creation_func && !exposed_class.is_singleton;
+		exposed_class.is_ref_counted = ClassDB::is_parent_class(class_name, "RefCounted");
+		exposed_class.base = ClassDB::get_parent_class(class_name);
+
+		// Add properties
+
+		List<PropertyInfo> property_list;
+		ClassDB::get_property_list(class_name, &property_list, true);
+
+		Map<StringName, StringName> accessor_methods;
+
+		for (const PropertyInfo &property : property_list) {
+			if (property.usage & PROPERTY_USAGE_GROUP || property.usage & PROPERTY_USAGE_SUBGROUP || property.usage & PROPERTY_USAGE_CATEGORY || (property.type == Variant::NIL && property.usage & PROPERTY_USAGE_ARRAY)) {
+				continue;
+			}
+
+			PropertyData prop;
+			prop.name = property.name;
+			prop.setter = ClassDB::get_property_setter(class_name, prop.name);
+			prop.getter = ClassDB::get_property_getter(class_name, prop.name);
+
+			if (prop.setter != StringName()) {
+				accessor_methods[prop.setter] = prop.name;
+			}
+			if (prop.getter != StringName()) {
+				accessor_methods[prop.getter] = prop.name;
+			}
+
+			bool valid = false;
+			prop.index = ClassDB::get_property_index(class_name, prop.name, &valid);
+			TEST_FAIL_COND(!valid, "Invalid property: '", exposed_class.name, ".", String(prop.name), "'.");
+
+			exposed_class.properties.push_back(prop);
+		}
+
+		// Add methods
+
+		List<MethodInfo> virtual_method_list;
+		ClassDB::get_virtual_methods(class_name, &virtual_method_list, true);
+
+		List<MethodInfo> method_list;
+		ClassDB::get_method_list(class_name, &method_list, true);
+		method_list.sort();
+
+		for (const MethodInfo &E : method_list) {
+			const MethodInfo &method_info = E;
+
+			int argc = method_info.arguments.size();
+
+			if (method_info.name.is_empty()) {
+				continue;
+			}
+
+			MethodData method;
+			method.name = method_info.name;
+
+			if (method_info.flags & METHOD_FLAG_VIRTUAL) {
+				method.is_virtual = true;
+			}
+
+			PropertyInfo return_info = method_info.return_val;
+
+			MethodBind *m = method.is_virtual ? nullptr : ClassDB::get_method(class_name, method_info.name);
+
+			method.is_vararg = m && m->is_vararg();
+
+			if (!m && !method.is_virtual) {
+				TEST_FAIL_COND(!virtual_method_list.find(method_info),
+						"Missing MethodBind for non-virtual method: '", exposed_class.name, ".", method.name, "'.");
+
+				// A virtual method without the virtual flag. This is a special case.
+
+				// The method Object.free is registered as a virtual method, but without the virtual flag.
+				// This is because this method is not supposed to be overridden, but called.
+				// We assume the return type is void.
+				method.return_type.name = r_context.names_cache.void_type;
+
+				// Actually, more methods like this may be added in the future, which could return
+				// something different. Let's put this check to notify us if that ever happens.
+				String warn_msg = vformat(
+						"Notification: New unexpected virtual non-overridable method found. "
+						"We only expected Object.free, but found '%s.%s'.",
+						exposed_class.name, method.name);
+				TEST_FAIL_COND_WARN(
+						(exposed_class.name != r_context.names_cache.object_class || String(method.name) != "free"),
+						warn_msg.utf8().get_data());
+
+			} else if (return_info.type == Variant::INT && return_info.usage & PROPERTY_USAGE_CLASS_IS_ENUM) {
+				method.return_type.name = return_info.class_name;
+				method.return_type.is_enum = true;
+			} else if (return_info.class_name != StringName()) {
+				method.return_type.name = return_info.class_name;
+
+				bool bad_reference_hint = !method.is_virtual && return_info.hint != PROPERTY_HINT_RESOURCE_TYPE &&
+						ClassDB::is_parent_class(return_info.class_name, r_context.names_cache.ref_counted_class);
+				TEST_COND(bad_reference_hint, "Return type is reference but hint is not '" _STR(PROPERTY_HINT_RESOURCE_TYPE) "'.", " Are you returning a reference type by pointer? Method: '",
+						exposed_class.name, ".", method.name, "'.");
+			} else if (return_info.hint == PROPERTY_HINT_RESOURCE_TYPE) {
+				method.return_type.name = return_info.hint_string;
+			} else if (return_info.type == Variant::NIL && return_info.usage & PROPERTY_USAGE_NIL_IS_VARIANT) {
+				method.return_type.name = r_context.names_cache.variant_type;
+			} else if (return_info.type == Variant::NIL) {
+				method.return_type.name = r_context.names_cache.void_type;
+			} else {
+				// NOTE: We don't care about the size and sign of int and float in these tests
+				method.return_type.name = Variant::get_type_name(return_info.type);
+			}
+
+			for (int i = 0; i < argc; i++) {
+				PropertyInfo arg_info = method_info.arguments[i];
+
+				String orig_arg_name = arg_info.name;
+
+				ArgumentData arg;
+				arg.name = orig_arg_name;
+
+				if (arg_info.type == Variant::INT && arg_info.usage & PROPERTY_USAGE_CLASS_IS_ENUM) {
+					arg.type.name = arg_info.class_name;
+					arg.type.is_enum = true;
+				} else if (arg_info.class_name != StringName()) {
+					arg.type.name = arg_info.class_name;
+				} else if (arg_info.hint == PROPERTY_HINT_RESOURCE_TYPE) {
+					arg.type.name = arg_info.hint_string;
+				} else if (arg_info.type == Variant::NIL) {
+					arg.type.name = r_context.names_cache.variant_type;
+				} else {
+					// NOTE: We don't care about the size and sign of int and float in these tests
+					arg.type.name = Variant::get_type_name(arg_info.type);
+				}
+
+				if (m && m->has_default_argument(i)) {
+					arg.has_defval = true;
+					arg.defval = m->get_default_argument(i);
+				}
+
+				method.arguments.push_back(arg);
+			}
+
+			if (method.is_vararg) {
+				ArgumentData vararg;
+				vararg.type.name = r_context.names_cache.vararg_stub_type;
+				vararg.name = "@varargs@";
+				method.arguments.push_back(vararg);
+			}
+
+			TEST_COND(exposed_class.find_property_by_name(method.name),
+					"Method name conflicts with property: '", String(class_name), ".", String(method.name), "'.");
+
+			// Methods starting with an underscore are ignored unless they're virtual or used as a property setter or getter.
+			if (!method.is_virtual && String(method.name)[0] == '_') {
+				for (const PropertyData &F : exposed_class.properties) {
+					const PropertyData &prop = F;
+
+					if (prop.setter == method.name || prop.getter == method.name) {
+						exposed_class.methods.push_back(method);
+						break;
+					}
+				}
+			} else {
+				exposed_class.methods.push_back(method);
+			}
+
+			if (method.is_virtual) {
+				TEST_COND(String(method.name)[0] != '_', "Virtual method ", String(method.name), " does not start with underscore.");
+			}
+		}
+
+		// Add signals
+
+		const HashMap<StringName, MethodInfo> &signal_map = class_info->signal_map;
+		const StringName *k = nullptr;
+
+		while ((k = signal_map.next(k))) {
+			SignalData signal;
+
+			const MethodInfo &method_info = signal_map.get(*k);
+
+			signal.name = method_info.name;
+
+			int argc = method_info.arguments.size();
+
+			for (int i = 0; i < argc; i++) {
+				PropertyInfo arg_info = method_info.arguments[i];
+
+				String orig_arg_name = arg_info.name;
+
+				ArgumentData arg;
+				arg.name = orig_arg_name;
+
+				if (arg_info.type == Variant::INT && arg_info.usage & PROPERTY_USAGE_CLASS_IS_ENUM) {
+					arg.type.name = arg_info.class_name;
+					arg.type.is_enum = true;
+				} else if (arg_info.class_name != StringName()) {
+					arg.type.name = arg_info.class_name;
+				} else if (arg_info.hint == PROPERTY_HINT_RESOURCE_TYPE) {
+					arg.type.name = arg_info.hint_string;
+				} else if (arg_info.type == Variant::NIL) {
+					arg.type.name = r_context.names_cache.variant_type;
+				} else {
+					// NOTE: We don't care about the size and sign of int and float in these tests
+					arg.type.name = Variant::get_type_name(arg_info.type);
+				}
+
+				signal.arguments.push_back(arg);
+			}
+
+			bool method_conflict = exposed_class.find_property_by_name(signal.name);
+
+			// TODO:
+			// ClassDB allows signal names that conflict with method or property names.
+			// However registering a signal with a conflicting name is still considered wrong.
+			// Unfortunately there are some existing cases that are yet to be fixed.
+			// Until those are fixed we will print a warning instead of failing the test.
+			String warn_msg = vformat(
+					"Signal name conflicts with %s: '%s.%s.",
+					method_conflict ? "method" : "property", class_name, signal.name);
+			TEST_FAIL_COND_WARN((method_conflict || exposed_class.find_method_by_name(signal.name)),
+					warn_msg.utf8().get_data());
+
+			exposed_class.signals_.push_back(signal);
+		}
+
+		// Add enums and constants
+
+		List<String> constants;
+		ClassDB::get_integer_constant_list(class_name, &constants, true);
+
+		const HashMap<StringName, List<StringName>> &enum_map = class_info->enum_map;
+		k = nullptr;
+
+		while ((k = enum_map.next(k))) {
+			EnumData enum_;
+			enum_.name = *k;
+
+			const List<StringName> &enum_constants = enum_map.get(*k);
+			for (const StringName &E : enum_constants) {
+				const StringName &constant_name = E;
+				TEST_FAIL_COND(String(constant_name).find("::") != -1,
+						"Enum constant contains '::', check bindings to remove the scope: '",
+						String(class_name), ".", String(enum_.name), ".", String(constant_name), "'.");
+				int *value = class_info->constant_map.getptr(constant_name);
+				TEST_FAIL_COND(!value, "Missing enum constant value: '",
+						String(class_name), ".", String(enum_.name), ".", String(constant_name), "'.");
+				constants.erase(constant_name);
+
+				ConstantData constant;
+				constant.name = constant_name;
+				constant.value = *value;
+
+				enum_.constants.push_back(constant);
+			}
+
+			exposed_class.enums.push_back(enum_);
+
+			r_context.enum_types.push_back(String(class_name) + "." + String(*k));
+		}
+
+		for (const String &E : constants) {
+			const String &constant_name = E;
+			TEST_FAIL_COND(constant_name.find("::") != -1,
+					"Constant contains '::', check bindings to remove the scope: '",
+					String(class_name), ".", constant_name, "'.");
+			int *value = class_info->constant_map.getptr(StringName(E));
+			TEST_FAIL_COND(!value, "Missing constant value: '", String(class_name), ".", String(constant_name), "'.");
+
+			ConstantData constant;
+			constant.name = constant_name;
+			constant.value = *value;
+
+			exposed_class.constants.push_back(constant);
+		}
+
+		r_context.exposed_classes.insert(class_name, exposed_class);
+		class_list.pop_front();
+	}
+}
+
+void add_builtin_types(Context &r_context) {
+	// NOTE: We don't care about the size and sign of int and float in these tests
+	for (int i = 0; i < Variant::VARIANT_MAX; i++) {
+		r_context.builtin_types.push_back(Variant::get_type_name(Variant::Type(i)));
+	}
+
+	r_context.builtin_types.push_back(_STR(Variant));
+	r_context.builtin_types.push_back(r_context.names_cache.vararg_stub_type);
+	r_context.builtin_types.push_back("void");
+}
+
+void add_global_enums(Context &r_context) {
+	int global_constants_count = CoreConstants::get_global_constant_count();
+
+	if (global_constants_count > 0) {
+		for (int i = 0; i < global_constants_count; i++) {
+			StringName enum_name = CoreConstants::get_global_constant_enum(i);
+
+			if (enum_name != StringName()) {
+				ConstantData constant;
+				constant.name = CoreConstants::get_global_constant_name(i);
+				constant.value = CoreConstants::get_global_constant_value(i);
+
+				EnumData enum_;
+				enum_.name = enum_name;
+				List<EnumData>::Element *enum_match = r_context.global_enums.find(enum_);
+				if (enum_match) {
+					enum_match->get().constants.push_back(constant);
+				} else {
+					enum_.constants.push_back(constant);
+					r_context.global_enums.push_back(enum_);
+				}
+			}
+		}
+
+		for (const EnumData &E : r_context.global_enums) {
+			r_context.enum_types.push_back(E.name);
+		}
+	}
+
+	// HARDCODED
+	List<StringName> hardcoded_enums;
+	hardcoded_enums.push_back("Vector2.Axis");
+	hardcoded_enums.push_back("Vector2i.Axis");
+	hardcoded_enums.push_back("Vector3.Axis");
+	hardcoded_enums.push_back("Vector3i.Axis");
+	for (const StringName &E : hardcoded_enums) {
+		// These enums are not generated and must be written manually (e.g.: Vector3.Axis)
+		// Here, we assume core types do not begin with underscore
+		r_context.enum_types.push_back(E);
+	}
+}
+
+TEST_SUITE("[ClassDB]") {
+	TEST_CASE("[ClassDB] Add exposed classes, builtin types, and global enums") {
+		Context context;
+
+		add_exposed_classes(context);
+		add_builtin_types(context);
+		add_global_enums(context);
+
+		SUBCASE("[ClassDB] Find exposed class") {
+			const ExposedClass *object_class = context.find_exposed_class(context.names_cache.object_class);
+			TEST_FAIL_COND(!object_class, "Object class not found.");
+			TEST_FAIL_COND(object_class->base != StringName(),
+					"Object class derives from another class: '", object_class->base, "'.");
+
+			for (ExposedClasses::Element E = context.exposed_classes.front(); E; E = E.next()) {
+				validate_class(context, E.value());
+			}
+		}
+	}
+}
+} // namespace TestClassDB
+
+#endif // TEST_CLASS_DB_H
diff --git a/tests/core/object/test_method_bind.h b/tests/core/object/test_method_bind.h
new file mode 100644
index 0000000000..c3a869a8a4
--- /dev/null
+++ b/tests/core/object/test_method_bind.h
@@ -0,0 +1,160 @@
+/*************************************************************************/
+/*  test_method_bind.h                                                   */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef TEST_METHOD_BIND_H
+#define TEST_METHOD_BIND_H
+
+#include "core/object/class_db.h"
+
+#include "tests/test_macros.h"
+
+namespace TestMethodBind {
+
+class MethodBindTester : public Object {
+	GDCLASS(MethodBindTester, Object);
+
+public:
+	enum Test {
+		TEST_METHOD,
+		TEST_METHOD_ARGS,
+		TEST_METHODC,
+		TEST_METHODC_ARGS,
+		TEST_METHODR,
+		TEST_METHODR_ARGS,
+		TEST_METHODRC,
+		TEST_METHODRC_ARGS,
+		TEST_METHOD_DEFARGS,
+		TEST_MAX
+	};
+
+	int test_num = 0;
+
+	bool test_valid[TEST_MAX];
+
+	void test_method() {
+		test_valid[TEST_METHOD] = true;
+	}
+
+	void test_method_args(int p_arg) {
+		test_valid[TEST_METHOD_ARGS] = p_arg == test_num;
+	}
+
+	void test_methodc() {
+		test_valid[TEST_METHODC] = true;
+	}
+
+	void test_methodc_args(int p_arg) {
+		test_valid[TEST_METHODC_ARGS] = p_arg == test_num;
+	}
+
+	int test_methodr() {
+		test_valid[TEST_METHODR] = true; //temporary
+		return test_num;
+	}
+
+	int test_methodr_args(int p_arg) {
+		test_valid[TEST_METHODR_ARGS] = true; //temporary
+		return p_arg;
+	}
+
+	int test_methodrc() {
+		test_valid[TEST_METHODRC] = true; //temporary
+		return test_num;
+	}
+
+	int test_methodrc_args(int p_arg) {
+		test_valid[TEST_METHODRC_ARGS] = true; //temporary
+		return p_arg;
+	}
+
+	void test_method_default_args(int p_arg1, int p_arg2, int p_arg3, int p_arg4, int p_arg5) {
+		test_valid[TEST_METHOD_DEFARGS] = p_arg1 == 1 && p_arg2 == 2 && p_arg3 == 3 && p_arg4 == 4 && p_arg5 == 5; //temporary
+	}
+
+	static void _bind_methods() {
+		ClassDB::bind_method(D_METHOD("test_method"), &MethodBindTester::test_method);
+		ClassDB::bind_method(D_METHOD("test_method_args"), &MethodBindTester::test_method_args);
+		ClassDB::bind_method(D_METHOD("test_methodc"), &MethodBindTester::test_methodc);
+		ClassDB::bind_method(D_METHOD("test_methodc_args"), &MethodBindTester::test_methodc_args);
+		ClassDB::bind_method(D_METHOD("test_methodr"), &MethodBindTester::test_methodr);
+		ClassDB::bind_method(D_METHOD("test_methodr_args"), &MethodBindTester::test_methodr_args);
+		ClassDB::bind_method(D_METHOD("test_methodrc"), &MethodBindTester::test_methodrc);
+		ClassDB::bind_method(D_METHOD("test_methodrc_args"), &MethodBindTester::test_methodrc_args);
+		ClassDB::bind_method(D_METHOD("test_method_default_args"), &MethodBindTester::test_method_default_args, DEFVAL(9) /* wrong on purpose */, DEFVAL(4), DEFVAL(5));
+	}
+
+	virtual void run_tests() {
+		for (int i = 0; i < TEST_MAX; i++) {
+			test_valid[i] = false;
+		}
+		//regular
+		test_num = Math::rand();
+		call("test_method");
+		test_num = Math::rand();
+		call("test_method_args", test_num);
+		test_num = Math::rand();
+		call("test_methodc");
+		test_num = Math::rand();
+		call("test_methodc_args", test_num);
+		//return
+		test_num = Math::rand();
+		test_valid[TEST_METHODR] = int(call("test_methodr")) == test_num && test_valid[TEST_METHODR];
+		test_num = Math::rand();
+		test_valid[TEST_METHODR_ARGS] = int(call("test_methodr_args", test_num)) == test_num && test_valid[TEST_METHODR_ARGS];
+		test_num = Math::rand();
+		test_valid[TEST_METHODRC] = int(call("test_methodrc")) == test_num && test_valid[TEST_METHODRC];
+		test_num = Math::rand();
+		test_valid[TEST_METHODRC_ARGS] = int(call("test_methodrc_args", test_num)) == test_num && test_valid[TEST_METHODRC_ARGS];
+
+		call("test_method_default_args", 1, 2, 3, 4);
+	}
+};
+
+TEST_CASE("[MethodBind] check all method binds") {
+	MethodBindTester *mbt = memnew(MethodBindTester);
+
+	print_line("testing method bind");
+	mbt->run_tests();
+
+	CHECK(mbt->test_valid[MethodBindTester::TEST_METHOD]);
+	CHECK(mbt->test_valid[MethodBindTester::TEST_METHOD_ARGS]);
+	CHECK(mbt->test_valid[MethodBindTester::TEST_METHODC]);
+	CHECK(mbt->test_valid[MethodBindTester::TEST_METHODC_ARGS]);
+	CHECK(mbt->test_valid[MethodBindTester::TEST_METHODR]);
+	CHECK(mbt->test_valid[MethodBindTester::TEST_METHODR_ARGS]);
+	CHECK(mbt->test_valid[MethodBindTester::TEST_METHODRC]);
+	CHECK(mbt->test_valid[MethodBindTester::TEST_METHODRC_ARGS]);
+	CHECK(mbt->test_valid[MethodBindTester::TEST_METHOD_DEFARGS]);
+
+	memdelete(mbt);
+}
+} // namespace TestMethodBind
+
+#endif // TEST_METHOD_BIND_H
diff --git a/tests/core/object/test_object.h b/tests/core/object/test_object.h
new file mode 100644
index 0000000000..4109ea521a
--- /dev/null
+++ b/tests/core/object/test_object.h
@@ -0,0 +1,280 @@
+/*************************************************************************/
+/*  test_object.h                                                        */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef TEST_OBJECT_H
+#define TEST_OBJECT_H
+
+#include "core/core_string_names.h"
+#include "core/object/class_db.h"
+#include "core/object/object.h"
+#include "core/object/script_language.h"
+
+#include "tests/test_macros.h"
+
+// Declared in global namespace because of GDCLASS macro warning (Windows):
+// "Unqualified friend declaration referring to type outside of the nearest enclosing namespace
+// is a Microsoft extension; add a nested name specifier".
+class _TestDerivedObject : public Object {
+	GDCLASS(_TestDerivedObject, Object);
+
+	int property_value;
+
+protected:
+	static void _bind_methods() {
+		ClassDB::bind_method(D_METHOD("set_property", "property"), &_TestDerivedObject::set_property);
+		ClassDB::bind_method(D_METHOD("get_property"), &_TestDerivedObject::get_property);
+		ADD_PROPERTY(PropertyInfo(Variant::INT, "property"), "set_property", "get_property");
+	}
+
+public:
+	void set_property(int value) { property_value = value; }
+	int get_property() const { return property_value; }
+};
+
+namespace TestObject {
+
+class _MockScriptInstance : public ScriptInstance {
+	StringName property_name = "NO_NAME";
+	Variant property_value;
+
+public:
+	bool set(const StringName &p_name, const Variant &p_value) override {
+		property_name = p_name;
+		property_value = p_value;
+		return true;
+	}
+	bool get(const StringName &p_name, Variant &r_ret) const override {
+		if (property_name == p_name) {
+			r_ret = property_value;
+			return true;
+		}
+		return false;
+	}
+	void get_property_list(List<PropertyInfo> *p_properties) const override {
+	}
+	Variant::Type get_property_type(const StringName &p_name, bool *r_is_valid) const override {
+		return Variant::PACKED_FLOAT32_ARRAY;
+	}
+	void get_method_list(List<MethodInfo> *p_list) const override {
+	}
+	bool has_method(const StringName &p_method) const override {
+		return false;
+	}
+	Variant call(const StringName &p_method, const Variant **p_args, int p_argcount, Callable::CallError &r_error) override {
+		return Variant();
+	}
+	void notification(int p_notification) override {
+	}
+	Ref<Script> get_script() const override {
+		return Ref<Script>();
+	}
+	const Vector<Multiplayer::RPCConfig> get_rpc_methods() const override {
+		return Vector<Multiplayer::RPCConfig>();
+	}
+	ScriptLanguage *get_language() override {
+		return nullptr;
+	}
+};
+
+TEST_CASE("[Object] Core getters") {
+	Object object;
+
+	CHECK_MESSAGE(
+			object.is_class("Object"),
+			"is_class() should return the expected value.");
+	CHECK_MESSAGE(
+			object.get_class() == "Object",
+			"The returned class should match the expected value.");
+	CHECK_MESSAGE(
+			object.get_class_name() == "Object",
+			"The returned class name should match the expected value.");
+	CHECK_MESSAGE(
+			object.get_class_static() == "Object",
+			"The returned static class should match the expected value.");
+	CHECK_MESSAGE(
+			object.get_save_class() == "Object",
+			"The returned save class should match the expected value.");
+
+	List<String> inheritance_list;
+	object.get_inheritance_list_static(&inheritance_list);
+	CHECK_MESSAGE(
+			inheritance_list.size() == 1,
+			"The inheritance list should consist of Object only");
+	CHECK_MESSAGE(
+			inheritance_list[0] == "Object",
+			"The inheritance list should consist of Object only");
+}
+
+TEST_CASE("[Object] Metadata") {
+	const String meta_path = "hello/world complex métadata\n\n\t\tpath";
+	Object object;
+
+	object.set_meta(meta_path, Color(0, 1, 0));
+	CHECK_MESSAGE(
+			Color(object.get_meta(meta_path)).is_equal_approx(Color(0, 1, 0)),
+			"The returned object metadata after setting should match the expected value.");
+
+	List<StringName> meta_list;
+	object.get_meta_list(&meta_list);
+	CHECK_MESSAGE(
+			meta_list.size() == 1,
+			"The metadata list should only contain 1 item after adding one metadata item.");
+
+	object.remove_meta(meta_path);
+	// Also try removing nonexistent metadata (it should do nothing, without printing an error message).
+	object.remove_meta("I don't exist");
+	ERR_PRINT_OFF;
+	CHECK_MESSAGE(
+			object.get_meta(meta_path) == Variant(),
+			"The returned object metadata after removing should match the expected value.");
+	ERR_PRINT_ON;
+
+	List<StringName> meta_list2;
+	object.get_meta_list(&meta_list2);
+	CHECK_MESSAGE(
+			meta_list2.size() == 0,
+			"The metadata list should contain 0 items after removing all metadata items.");
+}
+
+TEST_CASE("[Object] Construction") {
+	Object object;
+
+	CHECK_MESSAGE(
+			!object.is_ref_counted(),
+			"Object is not a RefCounted.");
+
+	Object *p_db = ObjectDB::get_instance(object.get_instance_id());
+	CHECK_MESSAGE(
+			p_db == &object,
+			"The database pointer returned by the object id should reference same object.");
+}
+
+TEST_CASE("[Object] Script instance property setter") {
+	Object object;
+	_MockScriptInstance *script_instance = memnew(_MockScriptInstance);
+	object.set_script_instance(script_instance);
+
+	bool valid = false;
+	object.set("some_name", 100, &valid);
+	CHECK(valid);
+	Variant actual_value;
+	CHECK_MESSAGE(
+			script_instance->get("some_name", actual_value),
+			"The assigned script instance should successfully retrieve value by name.");
+	CHECK_MESSAGE(
+			actual_value == Variant(100),
+			"The returned value should equal the one which was set by the object.");
+}
+
+TEST_CASE("[Object] Script instance property getter") {
+	Object object;
+	_MockScriptInstance *script_instance = memnew(_MockScriptInstance);
+	script_instance->set("some_name", 100); // Make sure script instance has the property
+	object.set_script_instance(script_instance);
+
+	bool valid = false;
+	const Variant &actual_value = object.get("some_name", &valid);
+	CHECK(valid);
+	CHECK_MESSAGE(
+			actual_value == Variant(100),
+			"The returned value should equal the one which was set by the script instance.");
+}
+
+TEST_CASE("[Object] Built-in property setter") {
+	GDREGISTER_CLASS(_TestDerivedObject);
+	_TestDerivedObject derived_object;
+
+	bool valid = false;
+	derived_object.set("property", 100, &valid);
+	CHECK(valid);
+	CHECK_MESSAGE(
+			derived_object.get_property() == 100,
+			"The property value should equal the one which was set with built-in setter.");
+}
+
+TEST_CASE("[Object] Built-in property getter") {
+	GDREGISTER_CLASS(_TestDerivedObject);
+	_TestDerivedObject derived_object;
+	derived_object.set_property(100);
+
+	bool valid = false;
+	const Variant &actual_value = derived_object.get("property", &valid);
+	CHECK(valid);
+	CHECK_MESSAGE(
+			actual_value == Variant(100),
+			"The returned value should equal the one which was set with built-in setter.");
+}
+
+TEST_CASE("[Object] Script property setter") {
+	Object object;
+	Variant script;
+
+	bool valid = false;
+	object.set(CoreStringNames::get_singleton()->_script, script, &valid);
+	CHECK(valid);
+	CHECK_MESSAGE(
+			object.get_script() == script,
+			"The object script should be equal to the assigned one.");
+}
+
+TEST_CASE("[Object] Script property getter") {
+	Object object;
+	Variant script;
+	object.set_script(script);
+
+	bool valid = false;
+	const Variant &actual_value = object.get(CoreStringNames::get_singleton()->_script, &valid);
+	CHECK(valid);
+	CHECK_MESSAGE(
+			actual_value == script,
+			"The returned value should be equal to the assigned script.");
+}
+
+TEST_CASE("[Object] Absent name setter") {
+	Object object;
+
+	bool valid = true;
+	object.set("absent_name", 100, &valid);
+	CHECK(!valid);
+}
+
+TEST_CASE("[Object] Absent name getter") {
+	Object object;
+
+	bool valid = true;
+	const Variant &actual_value = object.get("absent_name", &valid);
+	CHECK(!valid);
+	CHECK_MESSAGE(
+			actual_value == Variant(),
+			"The returned value should equal nil variant.");
+}
+} // namespace TestObject
+
+#endif // TEST_OBJECT_H