diff --git a/develop/testing/build_tests.lua b/develop/testing/build_tests.lua
index 626b88b..5d74faa 100644
--- a/develop/testing/build_tests.lua
+++ b/develop/testing/build_tests.lua
@@ -1,5 +1,7 @@
 local evo = require 'evolved'
 
+evo.debug_mode(true)
+
 do
     local f1, f2 = evo.id(2)
 
diff --git a/develop/testing/cancel_tests.lua b/develop/testing/cancel_tests.lua
index 43d8b11..6829172 100644
--- a/develop/testing/cancel_tests.lua
+++ b/develop/testing/cancel_tests.lua
@@ -1,5 +1,7 @@
 local evo = require 'evolved'
 
+evo.debug_mode(true)
+
 do
     assert(evo.defer())
     assert(evo.cancel())
diff --git a/develop/testing/clone_tests.lua b/develop/testing/clone_tests.lua
index 7b9edce..26b2d6e 100644
--- a/develop/testing/clone_tests.lua
+++ b/develop/testing/clone_tests.lua
@@ -1,5 +1,7 @@
 local evo = require 'evolved'
 
+evo.debug_mode(true)
+
 do
     do
         local p = evo.spawn()
diff --git a/develop/testing/depth_tests.lua b/develop/testing/depth_tests.lua
index 15a0e6f..afc08d9 100644
--- a/develop/testing/depth_tests.lua
+++ b/develop/testing/depth_tests.lua
@@ -1,5 +1,7 @@
 local evo = require 'evolved'
 
+evo.debug_mode(true)
+
 do
     assert(evo.depth() == 0)
 
diff --git a/develop/testing/destroy_tests.lua b/develop/testing/destroy_tests.lua
index 5325533..6b4c72a 100644
--- a/develop/testing/destroy_tests.lua
+++ b/develop/testing/destroy_tests.lua
@@ -1,5 +1,7 @@
 local evo = require 'evolved'
 
+evo.debug_mode(true)
+
 do
     local e = evo.id()
     assert(evo.alive(e))
diff --git a/develop/testing/locate_tests.lua b/develop/testing/locate_tests.lua
index 2c0723c..52a4b1a 100644
--- a/develop/testing/locate_tests.lua
+++ b/develop/testing/locate_tests.lua
@@ -1,5 +1,7 @@
 local evo = require 'evolved'
 
+evo.debug_mode(true)
+
 do
     local e1, e2, f1, f2 = evo.id(4)
 
diff --git a/develop/testing/mappers_tests.lua b/develop/testing/mappers_tests.lua
index 1e84950..890e245 100644
--- a/develop/testing/mappers_tests.lua
+++ b/develop/testing/mappers_tests.lua
@@ -1,5 +1,7 @@
 local evo = require 'evolved'
 
+evo.debug_mode(true)
+
 do
     local f1, f2 = evo.id(2)
 
diff --git a/develop/testing/multi_spawn_tests.lua b/develop/testing/multi_spawn_tests.lua
index 14dbd65..8908e17 100644
--- a/develop/testing/multi_spawn_tests.lua
+++ b/develop/testing/multi_spawn_tests.lua
@@ -1,5 +1,7 @@
 local evo = require 'evolved'
 
+evo.debug_mode(true)
+
 do
     local entity_list
 
diff --git a/develop/testing/name_tests.lua b/develop/testing/name_tests.lua
index 21b2e08..5ba6177 100644
--- a/develop/testing/name_tests.lua
+++ b/develop/testing/name_tests.lua
@@ -1,5 +1,7 @@
 local evo = require 'evolved'
 
+evo.debug_mode(true)
+
 do
     local id = evo.id()
 
diff --git a/develop/testing/process_with_tests.lua b/develop/testing/process_with_tests.lua
index 669eb75..b0fa703 100644
--- a/develop/testing/process_with_tests.lua
+++ b/develop/testing/process_with_tests.lua
@@ -1,5 +1,7 @@
 local evo = require 'evolved'
 
+evo.debug_mode(true)
+
 do
     local f = evo.id()
     local e = evo.builder():set(f, 42):spawn()
diff --git a/develop/testing/realloc_tests.lua b/develop/testing/realloc_tests.lua
index 7af3a90..a54c6aa 100644
--- a/develop/testing/realloc_tests.lua
+++ b/develop/testing/realloc_tests.lua
@@ -1,5 +1,7 @@
 local evo = require 'evolved'
 
+evo.debug_mode(true)
+
 ---@type ffilib?
 local ffi = (function()
     if package and package.loaded then
diff --git a/develop/testing/requires_fragment_tests.lua b/develop/testing/requires_fragment_tests.lua
index 89312f5..b4f8569 100644
--- a/develop/testing/requires_fragment_tests.lua
+++ b/develop/testing/requires_fragment_tests.lua
@@ -1,5 +1,7 @@
 local evo = require 'evolved'
 
+evo.debug_mode(true)
+
 do
     local f1, f2 = evo.id(2)
     evo.set(f1, evo.REQUIRES)
diff --git a/develop/testing/spawn_tests.lua b/develop/testing/spawn_tests.lua
index 1927817..4f8272a 100644
--- a/develop/testing/spawn_tests.lua
+++ b/develop/testing/spawn_tests.lua
@@ -1,5 +1,7 @@
 local evo = require 'evolved'
 
+evo.debug_mode(true)
+
 do
     do
         local e = evo.spawn()
diff --git a/develop/testing/system_as_query_tests.lua b/develop/testing/system_as_query_tests.lua
index 42effca..63d11f2 100644
--- a/develop/testing/system_as_query_tests.lua
+++ b/develop/testing/system_as_query_tests.lua
@@ -1,5 +1,7 @@
 local evo = require 'evolved'
 
+evo.debug_mode(true)
+
 do
     local f1, f2, f3 = evo.id(3)