houqp commented on a change in pull request #9273:
URL: https://github.com/apache/airflow/pull/9273#discussion_r439781508



##########
File path: tests/api_connexion/endpoints/test_variable_endpoint.py
##########
@@ -29,38 +31,141 @@ def setUpClass(cls) -> None:
 
     def setUp(self) -> None:
         self.client = self.app.test_client()  # type:ignore
+        clear_db_variables()
+
+    def tearDown(self) -> None:
+        clear_db_variables()
 
 
 class TestDeleteVariable(TestVariableEndpoint):
-    @pytest.mark.skip(reason="Not implemented yet")
-    def test_should_response_200(self):
-        response = self.client.delete("/api/v1/variables/TEST_VARIABLE_KEY")
+    def test_should_response_204(self):
+        Variable.set("delete_var1", 1)
+        # make sure variable is added
+        response = self.client.get("/api/v1/variables/delete_var1")
+        assert response.status_code == 200
+
+        response = self.client.delete("/api/v1/variables/delete_var1")
         assert response.status_code == 204
 
+        # make sure variable is deleted
+        response = self.client.get("/api/v1/variables/delete_var1")
+        assert response.status_code == 404
+
 
 class TestGetVariable(TestVariableEndpoint):
-    @pytest.mark.skip(reason="Not implemented yet")
+
     def test_should_response_200(self):
+        expected_value = '{"foo": 1}'
+        Variable.set("TEST_VARIABLE_KEY", expected_value)
         response = self.client.get("/api/v1/variables/TEST_VARIABLE_KEY")
         assert response.status_code == 200
+        assert response.json == {"key": "TEST_VARIABLE_KEY", "value": 
expected_value}
+
+    def test_should_response_404_if_not_found(self):
+        response = self.client.get("/api/v1/variables/NONEXIST_VARIABLE_KEY")
+        assert response.status_code == 404
 
 
 class TestGetVariables(TestVariableEndpoint):
-    @pytest.mark.skip(reason="Not implemented yet")
-    def test_should_response_200(self):
+    @parameterized.expand([
+        ("/api/v1/variables?limit=2&offset=0", {
+            "variables": [
+                {"key": "var1"},
+                {"key": "var2"},
+            ],
+            "total_entries": 2,
+        }),
+        ("/api/v1/variables?limit=2&offset=1", {
+            "variables": [
+                {"key": "var3"},
+            ],
+            "total_entries": 1,

Review comment:
       limit is 2 means page size is 2, if we are at second page (offset=1), 
shouldn't it be just return the last variable?




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