diff --git a/.mailmap b/.mailmap
index ed00506c00f..95ec8111936 100644
--- a/.mailmap
+++ b/.mailmap
@@ -119,6 +119,8 @@ Josh Shields <shields.joshua.v@gmail.com>
 Karan Desai <karandesai_96@live.com>
 Karan Desai <karandesai_96@live.com> karandesai-96 <karandesai_96@live.com>
 
+Karthik Rishinarada <karthikrk11135@gmail.com>
+
 Kaushik Varanasi <kaushik.varanasi1@gmail.com>
 Kaushik Varanasi <kaushik.varanasi1@gmail.com> kaushik94 <kaushik.varanasi1@gmail.com>
 
diff --git a/tardis/io/configuration/tests/test_config_validator.py b/tardis/io/configuration/tests/test_config_validator.py
index ee96b004089..03bbb486a5d 100644
--- a/tardis/io/configuration/tests/test_config_validator.py
+++ b/tardis/io/configuration/tests/test_config_validator.py
@@ -1,2 +1,72 @@
-# TODO: Write tests for the new validator
-pass
+import pytest 
+from jsonschema import Draft4Validator
+from pathlib import Path
+from astropy import units as u
+from jsonschema.exceptions import ValidationError
+
+from tardis.io.configuration.config_validator import (
+    _yaml_handler, 
+    validate_dict, 
+    validate_yaml, 
+    extend_with_default,
+    is_quantity
+)
+
+CONFIGURATION_TESTS_DIR = Path(__file__).resolve().parent
+CONFIG_DATA_VERYSIMPLE = CONFIGURATION_TESTS_DIR / "data/tardis_configv1_verysimple.yml"
+
+
+def test_yaml_handler(tardis_config_verysimple):
+    res = _yaml_handler(f"file://{CONFIG_DATA_VERYSIMPLE}")
+    assert res == tardis_config_verysimple
+
+    with pytest.raises(Exception):
+        _yaml_handler("/mock/example.yml")
+
+    with pytest.raises(FileNotFoundError):
+        _yaml_handler("file:///example.yml")
+
+
+def test_is_quantity():
+    quantity_val_1 = 5 * u.m
+    quantity_val_2 = 5
+
+    assert is_quantity(None, quantity_val_2) == False
+    assert is_quantity(None, quantity_val_1) == True
+
+
+def test_extend_with_default(tardis_config_verysimple):
+    Default_Validator = extend_with_default(Draft4Validator)
+
+    # Using the validator that extended from Draft4
+    dict_with_Default = validate_dict(tardis_config_verysimple, validator=Default_Validator)
+    assert dict_with_Default["plasma"]["initial_t_inner"] == "-1 K"
+
+    with pytest.raises(ValidationError):
+        dict_with_Draft4 = validate_dict(tardis_config_verysimple, validator=Draft4Validator)
+
+
+def test_validate_dict(tardis_config_verysimple):
+    config_dict_verysimple = validate_dict(tardis_config_verysimple)
+
+    assert config_dict_verysimple["montecarlo"]["seed"] == tardis_config_verysimple["montecarlo"]["seed"]
+
+    # Checks for default value when not provided
+    assert config_dict_verysimple["plasma"]["initial_t_inner"] == "-1 K"
+    assert config_dict_verysimple["supernova"]["luminosity_wavelength_start"] == "0 angstrom"
+
+    # ValidationError because Draft4Validator cannot process default values
+    # Context: cannot assign default value for model_isotope_time_0 in abundances which is a required field
+    with pytest.raises(ValidationError):
+        validate_dict(tardis_config_verysimple, validator=Draft4Validator)
+
+
+def test_validate_yaml():
+    path = CONFIG_DATA_VERYSIMPLE
+    dict = _yaml_handler(f"file://{CONFIG_DATA_VERYSIMPLE}")
+
+    # Provided config path retrieves validated dict
+    assert validate_yaml(path)["spectrum"]["num"] == dict["spectrum"]["num"] 
+
+    with pytest.raises(ValidationError):
+        validate_yaml(path, validator=Draft4Validator)