diff --git a/tools/content_build/tests/test_resolve.py b/tools/content_build/tests/test_resolve.py
index de17399..6972b89 100644
--- a/tools/content_build/tests/test_resolve.py
+++ b/tools/content_build/tests/test_resolve.py
@@ -105,3 +105,29 @@ def test_missing_ladder():
 def test_illegal_start_disposition():
     with pytest.raises(BuildError):
         resolve([ladder(), town(), rumor(), npc(start_disposition="besties")])
+
+
+def test_illegal_status():
+    bad = Entry(id="town.a", type="town", status="draft", secrecy=0,
+                related=[], body="x", source="t:9")
+    with pytest.raises(BuildError):
+        resolve([ladder(), bad])
+
+
+def test_npc_empty_knows_rejected():
+    with pytest.raises(BuildError):
+        resolve([ladder(), town(), rumor(), npc(knows=[])])
+
+
+def test_non_npc_with_start_disposition_rejected():
+    rec = Entry(id="person.p", type="person", status="canon", secrecy=0,
+                related=[], body="x", source="t:9", start_disposition="cold")
+    with pytest.raises(BuildError):
+        resolve([ladder(), town(), rumor(), rec])
+
+
+def test_empty_rungs_rejected():
+    empty = Entry(id="rule.disposition-ladder", type="rule", status="canon",
+                  secrecy=0, related=[], body="x", source="t:1", rungs=[])
+    with pytest.raises(BuildError):
+        resolve([empty])