diff --git a/tests/blueprint/unit.spec.lua b/tests/blueprint/unit.spec.lua
index 1b613d67a8..ab70ecd87e 100644
--- a/tests/blueprint/unit.spec.lua
+++ b/tests/blueprint/unit.spec.lua
@@ -20,6 +20,8 @@
 --** SOFTWARE.
 --******************************************************************************************************
 
+require "./tests/packages/fafMockLibrary.lua"
+
 ---@type Luft
 local luft = require "./tests/packages/luft"
 
diff --git a/tests/packages/fafMockLibrary.lua b/tests/packages/fafMockLibrary.lua
new file mode 100644
index 0000000000..930604c6a4
--- /dev/null
+++ b/tests/packages/fafMockLibrary.lua
@@ -0,0 +1,46 @@
+import = function(file)
+    return require('.' .. file)
+end
+
+-- Vector2 is needed in utils but not provided outside the game, so it has to be created here
+local Vector2Meta = {
+    __index = function(t, k)
+        if k == 'x' then
+            return t[1]
+        elseif k == 'y' then
+            return t[2]
+        elseif k == 'z' then
+            return t[3]
+        else
+            error("bad argument #2 to `?' ('x', 'y', or 'z' expected)", 1)
+        end
+    end,
+
+    __newindex = function(t, k, v)
+        if k == 'x' then
+            t[1] = v
+        elseif k == 'y' then
+            t[2] = v
+        elseif k == 'z' then
+            t[3] = v
+        else
+            error("bad argument #2 to `?' ('x', 'y', or 'z' expected)", 1)
+        end
+    end,
+}
+
+Vector2 = function(...)
+    if arg.n ~= 2 then
+        error("expected 2 args, but got " .. arg.n)
+    end
+    if not type(arg[1]) == "number" then
+        error("number expected but got " .. type(arg[1]))
+    end
+    if not type(arg[2]) == "number" then
+        error("number expected but got " .. type(arg[2]))
+    end
+
+    local newVector2 = {arg[1], arg[2]}
+    setmetatable(newVector2, Vector2Meta)
+    return newVector2
+end
diff --git a/tests/utility/color.spec.lua b/tests/utility/color.spec.lua
index d95093533e..9b51087a85 100644
--- a/tests/utility/color.spec.lua
+++ b/tests/utility/color.spec.lua
@@ -2,6 +2,8 @@
 --** Shared under the MIT license
 --**************************************************************************************************
 
+require "./tests/packages/fafMockLibrary.lua"
+
 local luft = require "./tests/packages/luft"
 
 -- color library
diff --git a/tests/utility/string.spec.lua b/tests/utility/string.spec.lua
index 07c361d047..3cbb9c23b7 100644
--- a/tests/utility/string.spec.lua
+++ b/tests/utility/string.spec.lua
@@ -1,48 +1,8 @@
+require "./tests/packages/fafMockLibrary.lua"
+
 -- Test framework
 local luft = require "./tests/packages/luft"
 
--- Vector2 is needed in utils but not provided outside the game, so it has to be created here
-local Vector2Meta = {
-    __index = function(t, k)
-        if k == 'x' then
-            return t[1]
-        elseif k == 'y' then
-            return t[2]
-        elseif k == 'z' then
-            return t[3]
-        else
-            error("bad argument #2 to `?' ('x', 'y', or 'z' expected)", 1)
-        end
-    end,
-
-    __newindex = function(t, k, v)
-        if k == 'x' then
-            t[1] = v
-        elseif k == 'y' then
-            t[2] = v
-        elseif k == 'z' then
-            t[3] = v
-        else
-            error("bad argument #2 to `?' ('x', 'y', or 'z' expected)", 1)
-        end
-    end,
-}
-Vector2 = function(...)
-    if arg.n ~= 2 then
-        error("expected 2 args, but got " .. arg.n)
-    end
-    if not type(arg[1]) == "number" then
-        error("number expected but got " .. type(arg[1]))
-    end
-    if not type(arg[2]) == "number" then
-        error("number expected but got " .. type(arg[2]))
-    end
-
-    local newVector2 = {arg[1], arg[2]}
-    setmetatable(newVector2, Vector2Meta)
-    return newVector2
-end
-
 -- These functions are imported to the global scope in globalInit and RuleInit
 require "./lua/system/utils.lua"