diff --git a/sde_collections/tests/api_tests.py b/sde_collections/tests/api_tests.py
new file mode 100644
index 00000000..73f2a77a
--- /dev/null
+++ b/sde_collections/tests/api_tests.py
@@ -0,0 +1,137 @@
+# docker-compose -f local.yml run --rm django pytest sde_collections/tests/api_tests.py
+import unittest
+from unittest.mock import Mock, patch
+
+from requests import HTTPError
+
+from ..sinequa_api import Api
+
+
+class TestApi(unittest.TestCase):
+    def setUp(self):
+        # Set up an instance of the Api class with parameters for testing
+        self.api = Api(server_name="test", user="test_user", password="test_password", token="test_token")
+
+    @patch("requests.post")
+    def test_process_response_success(self, mock_post):
+        # This test checks the process_response method when the HTTP request is successful
+        mock_response = Mock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {"key": "value"}
+        mock_post.return_value = mock_response
+
+        response = self.api.process_response("http://example.com/api", payload={"test": "data"})
+        self.assertEqual(response, {"key": "value"})
+        mock_post.assert_called_once()
+
+    @patch("requests.post")
+    def test_process_response_failure(self, mock_post):
+        # Create a mock response object with a 500 status code
+        mock_response = Mock()
+        mock_response.status_code = 500
+        mock_response.json.return_value = {"error": "Internal Server Error"}
+        mock_post.return_value = mock_response
+
+        def raise_for_status():
+            if mock_response.status_code != 200:
+                raise HTTPError(
+                    f"{mock_response.status_code} Server Error: Internal Server Error for url: http://example.com/api"
+                )
+
+        mock_response.raise_for_status = raise_for_status
+
+        # Attempt to process the response and check if it correctly handles the HTTP error
+        with self.assertRaises(HTTPError):
+            self.api.process_response("http://example.com/api", payload={"test": "data"})
+
+    @patch("requests.post")
+    def test_query(self, mock_post):
+        """
+        The test ensures that the query method constructs the correct URL and payload based on input parameters,
+          and processes a successful API response to return the expected data
+        """
+        mock_response = Mock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {"key": "value"}
+        mock_post.return_value = mock_response
+
+        response = self.api.query(page=1, collection_config_folder="sample_folder")
+        self.assertEqual(response, {"key": "value"})
+
+        expected_url = "https://sciencediscoveryengine.test.nasa.gov/api/v1/search.query"
+        expected_payload = {
+            "app": "nasa-sba-smd",
+            "query": {
+                "name": "query-smd-primary",
+                "text": "",
+                "page": 1,
+                "pageSize": 1000,
+                "advanced": {"collection": "/SDE/sample_folder/"},
+            },
+        }
+        mock_post.assert_called_once_with(expected_url, headers={}, json=expected_payload, verify=False)
+
+    @patch("requests.post")
+    def test_sql_query(self, mock_post):
+        # Mock response for the `sql_query` function with token-based authentication
+        mock_response = Mock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {"Rows": [["http://example.com", "sample text", "sample title"]]}
+        mock_post.return_value = mock_response
+
+        sql = "SELECT url1, text, title FROM sde_index WHERE collection = '/SDE/sample_folder/'"
+        response = self.api.sql_query(sql)
+        self.assertEqual(response, {"Rows": [["http://example.com", "sample text", "sample title"]]})
+
+    @patch("requests.post")
+    def test_get_full_texts(self, mock_post):
+        # Mock response for the `get_full_texts` method
+        mock_response = Mock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {
+            "Rows": [
+                ["http://example.com/article1", "Here is the full text of the first article...", "Article One Title"],
+                ["http://example.com/article2", "Here is the full text of the second article...", "Article Two Title"],
+            ]
+        }
+        mock_post.return_value = mock_response
+
+        result = self.api.get_full_texts(collection_config_folder="sample_folder")
+        expected = [
+            {
+                "url": "http://example.com/article1",
+                "full_text": "Here is the full text of the first article...",
+                "title": "Article One Title",
+            },
+            {
+                "url": "http://example.com/article2",
+                "full_text": "Here is the full text of the second article...",
+                "title": "Article Two Title",
+            },
+        ]
+        self.assertEqual(result, expected)
+
+    def test_missing_token_for_sql_query(self):
+        # To test when token is missing for sql_query
+        api = Api(server_name="test", token=None)
+        with self.assertRaises(ValueError):
+            api.sql_query("SELECT * FROM test_table")
+
+    def test_process_full_text_response(self):
+        # Test `_process_full_text_response` parsing functionality
+        raw_response = {
+            "Rows": [
+                ["http://example.com/article1", "Full text for article 1", "Title 1"],
+                ["http://example.com/article2", "Full text for article 2", "Title 2"],
+            ]
+        }
+        processed_response = Api._process_full_text_response(raw_response)
+        expected = [
+            {"url": "http://example.com/article1", "full_text": "Full text for article 1", "title": "Title 1"},
+            {"url": "http://example.com/article2", "full_text": "Full text for article 2", "title": "Title 2"},
+        ]
+        self.assertEqual(processed_response, expected)
+
+
+if __name__ == "__main__":
+    unittest.main()