diff --git a/docs/source/providers/base.md b/docs/source/providers/base.md
index ff1bc69b..d3eeca04 100644
--- a/docs/source/providers/base.md
+++ b/docs/source/providers/base.md
@@ -28,7 +28,7 @@ documentation for exact provider.
 .. autoclass:: geocoder.base.OneResult
    :members:
    :undoc-members:
-   :special-members: __init__
+   :special-members: __init__, __eq__
    :private-members: _parse_json_with_fieldnames, _get_bbox
 ```
 
diff --git a/geocoder/base.py b/geocoder/base.py
index 0a2df165..7ea511fc 100644
--- a/geocoder/base.py
+++ b/geocoder/base.py
@@ -137,13 +137,11 @@ def __init_subclass__(cls, **kwargs):
     @abstractmethod
     def lat(self) -> Optional[float]:
         """Latitude of the object"""
-        return None
 
     @property
     @abstractmethod
     def lng(self) -> Optional[float]:
         """Longitude of the object"""
-        return None
 
     @property
     def bbox(self) -> dict:
@@ -154,7 +152,6 @@ def bbox(self) -> dict:
     @abstractmethod
     def address(self) -> Optional[str]:
         """Object simple string address."""
-        return None
 
     def __repr__(self) -> str:
         """Display [address] if available; [lat, lng] otherwise"""
@@ -293,6 +290,18 @@ def x(self) -> Optional[float]:
         """Longitude of the object"""
         return self.lng
 
+    def __eq__(self, other) -> bool:
+        """Magic method to compare two results
+
+        Instances considered equal when have same class and same input JSON
+        """
+        return all(
+            [
+                self.object_raw_json == other.object_raw_json,
+                isinstance(self, other.__class__),
+            ]
+        )
+
 
 class MultipleResultsQuery(MutableSequence):
     """Base results and query manager container
diff --git a/tests/test_base_classes_multiple_results_query_class.py b/tests/test_base_classes_multiple_results_query_class.py
new file mode 100644
index 00000000..55edd36e
--- /dev/null
+++ b/tests/test_base_classes_multiple_results_query_class.py
@@ -0,0 +1,260 @@
+"""Tests for MultipleResultsQuery class
+
+There are much more tests, that usually required. This done consciously as it is core
+class of all future providers
+"""
+import logging
+from typing import Optional, Type
+
+import pytest
+
+from geocoder.base import MultipleResultsQuery, OneResult
+
+
+@pytest.fixture()
+def valid_result_class() -> Type[OneResult]:
+    """Return Result class fixture type"""
+
+    class ValidResultClass(OneResult):
+        """Result class fixture"""
+
+        _GEOCODER3_READY = True
+
+        @property
+        def lat(self) -> Optional[float]:
+            """Latitude of the object"""
+            return None
+
+        @property
+        def lng(self) -> Optional[float]:
+            """Longitude of the object"""
+            return None
+
+        @property
+        def address(self) -> Optional[str]:
+            """Object simple string address."""
+            return None
+
+    return ValidResultClass
+
+
+@pytest.fixture()
+def valid_query_class(valid_result_class) -> Type[MultipleResultsQuery]:
+    """Return Query class fixture type"""
+
+    class ValidQueryClass(MultipleResultsQuery):
+        """Query class fixture"""
+
+        _URL = "http://localhost"
+        _RESULT_CLASS = valid_result_class
+        _METHOD = "geocode"
+        _KEY = None
+        _KEY_MANDATORY = False
+        _PROVIDER = "test_provider"
+        _GEOCODER3_READY = True
+
+    return ValidQueryClass
+
+
+class TestIsValidUrlPrivateMethod:
+    @pytest.mark.parametrize(
+        "valid_url",
+        [
+            "http://localhost",
+            "http://localhost/",
+            "https://localhost",
+            "https://localhost/",
+            "https://nominatim.openstreetmap.org/search",
+            "https://nominatim.openstreetmap.org/search/",
+            "http://nominatim.openstreetmap.org/search",
+            "http://nominatim.openstreetmap.org/search/",
+        ],
+    )
+    def test__is_valid_url__returns_true__if_url_is_correct(self, valid_url):
+        result = MultipleResultsQuery._is_valid_url(valid_url)
+
+        assert result is True
+
+    @pytest.mark.parametrize(
+        "invalid_url",
+        [
+            "httxp://localhost",
+            "httxp://localhost/",
+            "localhost",
+            "localhost/",
+            None,
+            1,
+        ],
+    )
+    def test__is_valid_url__returns_false__if_url_is_incorrect(self, invalid_url):
+        result = MultipleResultsQuery._is_valid_url(invalid_url)
+
+        assert result is False
+
+    @pytest.mark.parametrize(
+        "invalid_url",
+        [
+            "httxp://localhost",
+            "httxp://localhost/",
+            "localhost",
+            "localhost/",
+            1,
+        ],
+    )
+    def test__is_valid_url__trigger__init__method_to_raise_error__when_url_is_incorrect(
+        self,
+        valid_query_class,
+        invalid_url,
+    ):
+        with pytest.raises(ValueError) as err:
+            _ = valid_query_class("Fake Location", url=invalid_url)
+
+        assert str(err.value) == f"url not valid. Got {invalid_url}"
+
+
+class TestInitSubclassMagicMethod:
+    @pytest.mark.parametrize(
+        "invalid_url",
+        [
+            "httxp://localhost",
+            "httxp://localhost/",
+            "localhost",
+            "localhost/",
+            None,
+            1,
+        ],
+    )
+    def test___init_subclass__raise_error__when_url_is_malformed(
+        self, valid_query_class, invalid_url
+    ):
+        with pytest.raises(ValueError) as err:
+
+            class _(valid_query_class):
+                _URL = invalid_url
+
+        assert "Subclass must define a valid URL." in str(err.value)
+
+    def test___init_subclass__raise_error__when_subclass_is_none(
+        self, valid_query_class
+    ):
+        with pytest.raises(ValueError) as err:
+
+            class _(valid_query_class):
+                _RESULT_CLASS = None
+
+        assert (
+            str(err.value) == "Subclass must define _RESULT_CLASS from 'OneResult'. "
+            "Got None"
+        )
+
+    def test___init_subclass__raise_error__when_subclass_is_not_from_one_result_class(
+        self,
+        valid_query_class,
+    ):
+        with pytest.raises(ValueError) as err:
+
+            class ResultForTest:
+                """Class not nested from expected class"""
+
+                pass
+
+            class _(valid_query_class):
+                _RESULT_CLASS = ResultForTest
+
+        assert "Subclass must define _RESULT_CLASS from 'OneResult'." in str(err.value)
+
+    @pytest.mark.parametrize("invalid_method", [None, "unsupported"])
+    def test___init_subclass__raise_error__when_method_is_not_set_or_incorrect(
+        self, valid_query_class, invalid_method
+    ):
+        with pytest.raises(ValueError) as err:
+
+            class _(valid_query_class):
+                _METHOD = invalid_method
+
+        assert (
+            "Subclass must define correct _METHOD attribute, not equal to None. "
+            in str(err.value)
+        )
+
+
+class TestHasDataProperty:
+    def test__has_data__raises_error__when_external_call_not_made(
+        self, valid_query_class
+    ):
+        test_object = valid_query_class("Fake Location")
+        with pytest.raises(RuntimeError) as err:
+            _ = test_object.has_data
+
+        assert str(err.value) == (
+            "Cannot detect data presence. External request was not made. "
+            "Use instance __call__() method to retrieve data."
+        )
+
+
+class TestStatusProperty:
+    def test__status__display_correct_info__when_external_call_not_made(
+        self, valid_query_class
+    ):
+        test_object = valid_query_class("Fake Location")
+        assert test_object.status == "External request was not made"
+
+
+class TestDebugFunction:
+    def test__debug__when_query_not_made__return_only_status(
+        self, caplog, valid_query_class
+    ):
+        caplog.set_level(logging.DEBUG)
+        test_object = valid_query_class("Fake Location")
+        _ = test_object.debug()
+        assert "[External request was not made]" in caplog.text
+        assert "Test_Provider - Geocode [empty]" in caplog.text
+        assert "results: 0" in caplog.text
+        assert "code: None" in caplog.text
+        assert "url:  http://localhost" in caplog.text
+        assert "External request was not made" in caplog.text
+
+
+class TestApiKey:
+    @pytest.mark.parametrize("wrong_key", ["", None], ids=["Empty", "None"])
+    def test__get_api_key__raise_error__when_api_key_required_but_not_provided(
+        self, valid_query_class, wrong_key
+    ):
+        class TestClass(valid_query_class):
+            """Test class with modified _KEY_MANDATORY"""
+
+            _KEY_MANDATORY = True
+
+        with pytest.raises(ValueError) as err:
+            _ = TestClass("Fake Location", key=wrong_key)
+
+        assert str(err.value) == "Provide API Key"
+
+    def test__get_api_key_and__init__correctly_set_key__when_api_key_and_provided(
+        self, valid_query_class
+    ):
+        correct_key = "Any string"
+
+        class TestClass(valid_query_class):
+            """Test class with modified _KEY_MANDATORY and _KEY"""
+
+            _KEY_MANDATORY = True
+            _KEY = "I will be replaced"
+
+        obj = TestClass("Fake Location", key=correct_key)
+        assert obj._KEY == correct_key
+
+
+class TestCollectionCustomAndMagicMethods:
+    def test__add__method__adds_result_to_collection__even_when_not_yet_called(
+        self, valid_query_class, valid_result_class
+    ):
+        collection = valid_query_class("Some location")
+        fake_result = valid_result_class({})
+
+        assert len(collection) == 0
+
+        collection.add(fake_result)
+
+        assert len(collection) == 1
+        assert collection[0] == fake_result
diff --git a/tests/test_base_classes_one_result_class.py b/tests/test_base_classes_one_result_class.py
new file mode 100644
index 00000000..a50b25ac
--- /dev/null
+++ b/tests/test_base_classes_one_result_class.py
@@ -0,0 +1,129 @@
+"""Tests for OneResult class
+
+There are much more tests, that usually required. This done consciously as it is core
+class of all future providers
+"""
+from typing import Optional, Type
+
+import pytest
+
+from geocoder.base import OneResult
+
+
+@pytest.fixture()
+def valid_result_class() -> Type[OneResult]:
+    """Return Result class fixture type"""
+
+    class ValidResultClass(OneResult):
+        """Result class fixture"""
+
+        _GEOCODER3_READY = True
+
+        @property
+        def lat(self) -> Optional[float]:
+            """Latitude of the object"""
+            return None
+
+        @property
+        def lng(self) -> Optional[float]:
+            """Longitude of the object"""
+            return None
+
+        @property
+        def address(self) -> Optional[str]:
+            """Object simple string address."""
+            return None
+
+    return ValidResultClass
+
+
+class TestCustomAndMagicMethods:
+    def test__eq__match_two_objects_with_not_same_json_order(self, valid_result_class):
+        results_a = valid_result_class({"prop1": "a", "prop2": "b"})
+        results_b = valid_result_class({"prop2": "b", "prop1": "a"})
+
+        assert results_b == results_a
+
+    @pytest.mark.parametrize(
+        "dict_a, dict_b",
+        [
+            ({"prop1": "b", "prop2": "a"}, {"prop1": "a", "prop2": "b"}),
+            ({"prop1": "a", "prop2": "a"}, {"prop1": "a", "prop22": "a"}),
+            ({"prop1": "a", "prop2": "a"}, {"prop1": "a", "prop2": "a", "prop3": "a"}),
+        ],
+        ids=[
+            "Same keys, different values",
+            "Same values, different keys",
+            "Different sizes",
+        ],
+    )
+    def test__eq__not_match_two_objects(self, valid_result_class, dict_a, dict_b):
+        results_a = valid_result_class(dict_a)
+        results_b = valid_result_class(dict_b)
+
+        assert results_b != results_a
+
+
+class TestInitSubclassMagicMethod:
+    def test___init_subclass__raise_error__when_lat_property_not_implemented(self):
+        with pytest.raises(NotImplementedError) as err:
+
+            # noinspection PyAbstractClass
+            class _(OneResult):
+                """Test result class without lat property"""
+
+                _GEOCODER3_READY = True
+
+                @property
+                def lng(self) -> Optional[float]:
+                    """Longitude of the object"""
+                    return None
+
+                @property
+                def address(self) -> Optional[str]:
+                    """Object simple string address."""
+                    return None
+
+        assert str(err.value) == "All subclasses should implement 'lat' property"
+
+    def test___init_subclass__raise_error__when_lng_property_not_implemented(self):
+        with pytest.raises(NotImplementedError) as err:
+
+            # noinspection PyAbstractClass
+            class _(OneResult):
+                """Test result class without lng property"""
+
+                _GEOCODER3_READY = True
+
+                @property
+                def lat(self) -> Optional[float]:
+                    """Latitude of the object"""
+                    return None
+
+                @property
+                def address(self) -> Optional[str]:
+                    """Object simple string address."""
+                    return None
+
+        assert str(err.value) == "All subclasses should implement 'lng' property"
+
+    def test___init_subclass__raise_error__when_address_property_not_implemented(self):
+        with pytest.raises(NotImplementedError) as err:
+
+            # noinspection PyAbstractClass
+            class _(OneResult):
+                """Test result class without address property"""
+
+                _GEOCODER3_READY = True
+
+                @property
+                def lat(self) -> Optional[float]:
+                    """Latitude of the object"""
+                    return None
+
+                @property
+                def lng(self) -> Optional[float]:
+                    """Longitude of the object"""
+                    return None
+
+        assert str(err.value) == "All subclasses should implement 'address' property"