diff --git a/y2023/constants/BUILD b/y2023/constants/BUILD
index 09e57c7..344fa75 100644
--- a/y2023/constants/BUILD
+++ b/y2023/constants/BUILD
@@ -4,8 +4,10 @@
 cc_library(
     name = "simulated_constants_sender",
     testonly = True,
-    srcs = ["simulated_constants_sender.h"],
-    hdrs = ["simulated_constants_sender.cc"],
+    srcs = ["simulated_constants_sender.cc"],
+    hdrs = ["simulated_constants_sender.h"],
+    data = [":test_constants.json"],
+    visibility = ["//y2023:__subpackages__"],
     deps = [
         ":constants_fbs",
         ":constants_list_fbs",
@@ -16,6 +18,15 @@
 )
 
 jinja2_template(
+    name = "test_constants.json",
+    testonly = True,
+    src = "test_constants.jinja2.json",
+    includes = glob(["test_data/*.json"]),
+    parameters = {},
+    visibility = ["//visibility:public"],
+)
+
+jinja2_template(
     name = "constants.json",
     src = "constants.jinja2.json",
     includes = [
diff --git a/y2023/constants/simulated_constants_sender.cc b/y2023/constants/simulated_constants_sender.cc
index 3086e99..f18c3c1 100644
--- a/y2023/constants/simulated_constants_sender.cc
+++ b/y2023/constants/simulated_constants_sender.cc
@@ -2,6 +2,7 @@
 #include "y2023/constants/constants_list_generated.h"
 #include "aos/events/simulated_event_loop.h"
 #include "aos/testing/path.h"
+#include "frc971/constants/constants_sender_lib.h"
 
 namespace y2023 {
 void SendSimulationConstants(aos::SimulatedEventLoopFactory *factory, int team,
@@ -14,5 +15,3 @@
   }
 }
 }  // namespace y2023
-
-#endif  // Y2023_CONFIGURATION_SIMULATED_CONFIG_SENDER_H_
diff --git a/y2023/constants/simulated_constants_sender.h b/y2023/constants/simulated_constants_sender.h
index 10ea793..44a868c 100644
--- a/y2023/constants/simulated_constants_sender.h
+++ b/y2023/constants/simulated_constants_sender.h
@@ -5,9 +5,10 @@
 #include "aos/testing/path.h"
 
 namespace y2023 {
-void SendSimulationConstants(aos::SimulatedEventLoopFactory *factory, int team,
-                             std::string constants_path = testing::ArtifactPath(
-                                 "y2023/constants/constants.json"));
+void SendSimulationConstants(
+    aos::SimulatedEventLoopFactory *factory, int team,
+    std::string constants_path =
+        aos::testing::ArtifactPath("y2023/constants/test_constants.json"));
 }  // namespace y2023
 
 #endif  // Y2023_CONSTANTS_SIMULATED_CONFIG_SENDER_H_
diff --git a/y2023/constants/test_constants.jinja2.json b/y2023/constants/test_constants.jinja2.json
new file mode 100644
index 0000000..86bd834
--- /dev/null
+++ b/y2023/constants/test_constants.jinja2.json
@@ -0,0 +1,8 @@
+{
+  "constants": [
+    {
+      "team": 7971,
+      "data": {% include 'y2023/constants/test_data/test_team.json' %}
+    }
+  ]
+}
diff --git a/y2023/constants/test_data/calibration_pi-1.json b/y2023/constants/test_data/calibration_pi-1.json
new file mode 100644
index 0000000..1902740
--- /dev/null
+++ b/y2023/constants/test_data/calibration_pi-1.json
@@ -0,0 +1,45 @@
+{
+  "node_name": "pi1",
+  "team_number": 7971,
+  "intrinsics": [
+    893.759521,
+    0,
+    645.470764,
+    0,
+    893.222351,
+    388.150269,
+    0,
+    0,
+    1
+  ],
+  "fixed_extrinsics": {
+    "data": [
+      0.0,
+      0.0,
+      1.0,
+      1.0,
+
+      -1.0,
+      0.0,
+      0.0,
+      0.0,
+
+      0.0,
+      -1.0,
+      0.0,
+      0.0,
+
+      0.0,
+      0.0,
+      0.0,
+      1.0
+    ]
+  },
+  "dist_coeffs": [
+    -0.44902,
+    0.248409,
+    -0.000537,
+    -0.000112,
+    -0.076989
+  ]
+}
diff --git a/y2023/constants/test_data/calibration_pi-2.json b/y2023/constants/test_data/calibration_pi-2.json
new file mode 100644
index 0000000..289337d
--- /dev/null
+++ b/y2023/constants/test_data/calibration_pi-2.json
@@ -0,0 +1,45 @@
+{
+  "node_name": "pi2",
+  "team_number": 7971,
+  "intrinsics": [
+    893.759521,
+    0,
+    645.470764,
+    0,
+    893.222351,
+    388.150269,
+    0,
+    0,
+    1
+  ],
+  "fixed_extrinsics": {
+    "data": [
+      1.0,
+      0.0,
+      0.0,
+      1.0,
+
+      0.0,
+      0.0,
+      -1.0,
+      0.0,
+
+      0.0,
+      1.0,
+      0.0,
+      0.0,
+
+      0.0,
+      0.0,
+      0.0,
+      1.0
+    ]
+  },
+  "dist_coeffs": [
+    -0.44902,
+    0.248409,
+    -0.000537,
+    -0.000112,
+    -0.076989
+  ]
+}
diff --git a/y2023/constants/test_data/calibration_pi-3.json b/y2023/constants/test_data/calibration_pi-3.json
new file mode 100644
index 0000000..073a88a
--- /dev/null
+++ b/y2023/constants/test_data/calibration_pi-3.json
@@ -0,0 +1,45 @@
+{
+  "node_name": "pi3",
+  "team_number": 7971,
+  "intrinsics": [
+    893.759521,
+    0,
+    645.470764,
+    0,
+    893.222351,
+    388.150269,
+    0,
+    0,
+    1
+  ],
+  "fixed_extrinsics": {
+    "data": [
+      0.0,
+      1.0,
+      0.0,
+      1.0,
+
+      0.0,
+      0.0,
+      -1.0,
+      0.0,
+
+      -1.0,
+      0.0,
+      0.0,
+      0.0,
+
+      0.0,
+      0.0,
+      0.0,
+      1.0
+    ]
+  },
+  "dist_coeffs": [
+    -0.44902,
+    0.248409,
+    -0.000537,
+    -0.000112,
+    -0.076989
+  ]
+}
diff --git a/y2023/constants/test_data/calibration_pi-4.json b/y2023/constants/test_data/calibration_pi-4.json
new file mode 100644
index 0000000..0097bdb
--- /dev/null
+++ b/y2023/constants/test_data/calibration_pi-4.json
@@ -0,0 +1,45 @@
+{
+  "node_name": "pi4",
+  "team_number": 7971,
+  "intrinsics": [
+    893.759521,
+    0,
+    645.470764,
+    0,
+    893.222351,
+    388.150269,
+    0,
+    0,
+    1
+  ],
+  "fixed_extrinsics": {
+    "data": [
+      -1.0,
+      0.0,
+      0.0,
+      1.0,
+
+      0.0,
+      0.0,
+      -1.0,
+      0.0,
+
+      0.0,
+      -1.0,
+      0.0,
+      0.0,
+
+      0.0,
+      0.0,
+      0.0,
+      1.0
+    ]
+  },
+  "dist_coeffs": [
+    -0.44902,
+    0.248409,
+    -0.000537,
+    -0.000112,
+    -0.076989
+  ]
+}
diff --git a/y2023/constants/test_data/target_map.json b/y2023/constants/test_data/target_map.json
new file mode 100644
index 0000000..6bd2947
--- /dev/null
+++ b/y2023/constants/test_data/target_map.json
@@ -0,0 +1,18 @@
+{
+    "target_poses": [
+        {
+            "id": 1,
+            "position": {
+                "x": 10.0,
+                "y": 10.0,
+                "z": 10.0
+            },
+            "orientation": {
+                "w": 0.0,
+                "x": 0.0,
+                "y": 0.0,
+                "z": 1.0
+            }
+        }
+    ]
+}
diff --git a/y2023/constants/test_data/test_team.json b/y2023/constants/test_data/test_team.json
new file mode 100644
index 0000000..adc9eae
--- /dev/null
+++ b/y2023/constants/test_data/test_team.json
@@ -0,0 +1,17 @@
+{
+  "cameras": [
+    {
+      "calibration": {% include 'y2023/constants/test_data/calibration_pi-1.json' %}
+    },
+    {
+      "calibration": {% include 'y2023/constants/test_data/calibration_pi-2.json' %}
+    },
+    {
+      "calibration": {% include 'y2023/constants/test_data/calibration_pi-3.json' %}
+    },
+    {
+      "calibration": {% include 'y2023/constants/test_data/calibration_pi-4.json' %}
+    }
+  ],
+  "target_map": {% include 'y2023/constants/test_data/target_map.json' %}
+}