diff --git a/merlin-driver/src/test/java/gov/nasa/jpl/aerie/merlin/driver/AnchorSimulationTest.java b/merlin-driver/src/test/java/gov/nasa/jpl/aerie/merlin/driver/AnchorSimulationTest.java
index 1fc2a4ecea..2e6ee140d2 100644
--- a/merlin-driver/src/test/java/gov/nasa/jpl/aerie/merlin/driver/AnchorSimulationTest.java
+++ b/merlin-driver/src/test/java/gov/nasa/jpl/aerie/merlin/driver/AnchorSimulationTest.java
@@ -1066,6 +1066,26 @@ public void naryTreeAnchorChain() {
     private static final Topic<Object> delayedActivityDirectiveInputTopic = new Topic<>();
     private static final Topic<Object> delayedActivityDirectiveOutputTopic = new Topic<>();
     /* package-private*/ static final DirectiveType<Object, Object, Object> delayedActivityDirective = new DirectiveType<>() {
+      @Override
+      public String getDescription() {
+        return "";
+      }
+
+      @Override
+      public Map<String, String> getParameterDescriptions() {
+        return Map.of();
+      }
+
+      @Override
+      public Map<String, String> getParameterUnits() {
+        return Map.of();
+      }
+
+      @Override
+      public Map<String, String> getComputedAttributeUnits() {
+        return Map.of();
+      }
+
       @Override
       public InputType<Object> getInputType() {
         return testModelInputType;
@@ -1091,6 +1111,26 @@ public TaskFactory<Object> getTaskFactory(final Object o, final Object o2) {
     private static final Topic<Object> decomposingActivityDirectiveInputTopic = new Topic<>();
     private static final Topic<Object> decomposingActivityDirectiveOutputTopic = new Topic<>();
     /* package-private */  static final DirectiveType<Object, Object, Object> decomposingActivityDirective = new DirectiveType<>() {
+      @Override
+      public String getDescription() {
+        return "";
+      }
+
+      @Override
+      public Map<String, String> getParameterDescriptions() {
+        return Map.of();
+      }
+
+      @Override
+      public Map<String, String> getParameterUnits() {
+        return Map.of();
+      }
+
+      @Override
+      public Map<String, String> getComputedAttributeUnits() {
+        return Map.of();
+      }
+
       @Override
       public InputType<Object> getInputType() {
         return testModelInputType;
@@ -1216,8 +1256,14 @@ public Object instantiate(
               {
                 return new Object();
               }
+
+              @Override
+              public Map<String, String> getResourceTypeUnits() {
+                return Map.of();
+              }
             }
-        )
+        ),
+        Map.of()
     );
     //endregion
   }
diff --git a/merlin-driver/src/test/java/gov/nasa/jpl/aerie/merlin/driver/CellExpiryTest.java b/merlin-driver/src/test/java/gov/nasa/jpl/aerie/merlin/driver/CellExpiryTest.java
index 9f77888c3a..ebdc2a2f3b 100644
--- a/merlin-driver/src/test/java/gov/nasa/jpl/aerie/merlin/driver/CellExpiryTest.java
+++ b/merlin-driver/src/test/java/gov/nasa/jpl/aerie/merlin/driver/CellExpiryTest.java
@@ -140,6 +140,6 @@ public String getDynamics(final Querier querier) {
 
     initializer.resource(resourceName, resource);
 
-    return initializer.build(ref, new DirectiveTypeRegistry<>(Map.of()));
+    return initializer.build(ref, new DirectiveTypeRegistry<>(Map.of()), Map.of());
   }
 }