Include a cold start bandit test case (#71)

* cold start bandit test case

* hit all variations in the cold start test

* correct flag key

* try null instead of cold start for model version

* revert to using cold start placeholder

Author: aarsilv

ufc/bandit-flags-v1.json

@@ -227,6 +227,31 @@
                 }
             ],
             "totalShards": 10000
+        },
+        "cold_start_bandit_flag": {
+            "key": "cold_start_bandit_flag",
+            "enabled": true,
+            "variationType": "STRING",
+            "variations": {
+                "cold_start_bandit": {
+                    "key": "cold_start_bandit",
+                    "value": "cold_start_bandit"
+                }
+            },
+            "allocations": [
+                {
+                    "key": "all-traffic",
+                    "rules": [],
+                    "splits": [
+                        {
+                            "variationKey": "cold_start_bandit",
+                            "shards": []
+                        }
+                    ],
+                    "doLog": true
+                }
+            ],
+            "totalShards": 10000
         }
     },
     "bandits": {
@@ -286,7 +311,7 @@
                     "variationValue": "banner_bandit"
                 }
             ],
-            "modelVersion": "v123"
+            "modelVersion": "123"
         },
         "car_bandit": {
             "flagVariations": [
@@ -298,7 +323,7 @@
                     "variationValue": "car_bandit"
                 }
             ],
-            "modelVersion": "v456"
+            "modelVersion": "456"
         },
         "cold_start_bandit": {
             "flagVariations": [

ufc/bandit-models-v1.json

@@ -8,7 +8,7 @@
       "banditKey": "banner_bandit",
       "modelName": "falcon",
       "updatedAt": "2023-09-13T04:52:06.462Z",
-      "modelVersion": "v123",
+      "modelVersion": "123",
       "modelData": {
         "gamma": 1.0,
         "defaultActionScore": 0.0,
@@ -28,9 +28,9 @@
               {
                 "attributeKey": "loyalty_tier",
                 "valueCoefficients": {
-                   "gold": 4.5,
-                   "silver":  3.2,
-                   "bronze":  1.9
+                  "gold": 4.5,
+                  "silver":  3.2,
+                  "bronze":  1.9
                 },
                 "missingValueCoefficient": 0.0
               },
@@ -110,7 +110,7 @@
       "banditKey": "car_bandit",
       "modelName": "falcon",
       "updatedAt": "2023-09-13T04:52:06.462Z",
-      "modelVersion": "v456",
+      "modelVersion": "456",
       "modelData": {
         "gamma": 1.0,
         "defaultActionScore": 5.0,
@@ -143,5 +143,5 @@
         "coefficients": {}
       }
     }
-   }
+  }
 }

ufc/bandit-tests/test-case-bandit-cold-start.json

@@ -0,0 +1,81 @@
+{
+  "flag": "cold_start_bandit_flag",
+  "defaultValue": "default",
+  "subjects": [
+    {
+      "subjectKey": "alice",
+      "subjectAttributes": {
+        "numericAttributes": {},
+        "categoricalAttributes": {}
+      },
+      "actions": [
+        {
+          "actionKey": "red",
+          "numericAttributes": {},
+          "categoricalAttributes": {}
+        },
+        {
+          "actionKey": "blue",
+          "numericAttributes": {},
+          "categoricalAttributes": {}
+        },
+        {
+          "actionKey": "green",
+          "numericAttributes": {},
+          "categoricalAttributes": {}
+        }
+      ],
+      "assignment": {"variation": "cold_start_bandit", "action": "red"}
+    },
+    {
+      "subjectKey": "bob",
+      "subjectAttributes": {
+        "numericAttributes": {},
+        "categoricalAttributes": {}
+      },
+      "actions": [
+        {
+          "actionKey": "red",
+          "numericAttributes": {},
+          "categoricalAttributes": {}
+        },
+        {
+          "actionKey": "blue",
+          "numericAttributes": {},
+          "categoricalAttributes": {}
+        },
+        {
+          "actionKey": "green",
+          "numericAttributes": {},
+          "categoricalAttributes": {}
+        }
+      ],
+      "assignment": {"variation": "cold_start_bandit", "action": "green"}
+    },
+    {
+      "subjectKey": "charles",
+      "subjectAttributes": {
+        "numericAttributes": {},
+        "categoricalAttributes": {}
+      },
+      "actions": [
+        {
+          "actionKey": "red",
+          "numericAttributes": {},
+          "categoricalAttributes": {}
+        },
+        {
+          "actionKey": "blue",
+          "numericAttributes": {},
+          "categoricalAttributes": {}
+        },
+        {
+          "actionKey": "green",
+          "numericAttributes": {},
+          "categoricalAttributes": {}
+        }
+      ],
+      "assignment": {"variation": "cold_start_bandit", "action": "blue"}
+    }
+  ]
+}