diff --git a/assets/tests/lua/entity_variable.lua b/assets/tests/lua/entity_variable.lua
index e69de29..4bf3745 100644
--- a/assets/tests/lua/entity_variable.lua
+++ b/assets/tests/lua/entity_variable.lua
@@ -0,0 +1,3 @@
+function test_func()
+	rust_func(entity.index)
+end
diff --git a/assets/tests/lua/entity_variable_eval.lua b/assets/tests/lua/entity_variable_eval.lua
index e69de29..fdc8f94 100644
--- a/assets/tests/lua/entity_variable_eval.lua
+++ b/assets/tests/lua/entity_variable_eval.lua
@@ -0,0 +1,5 @@
+index = entity.index
+
+function test_func()
+	rust_func(index)
+end
diff --git a/assets/tests/lua/pass_entity_from_script.lua b/assets/tests/lua/pass_entity_from_script.lua
new file mode 100644
index 0000000..355ef3a
--- /dev/null
+++ b/assets/tests/lua/pass_entity_from_script.lua
@@ -0,0 +1,3 @@
+function test_func()
+	rust_func(entity)
+end
diff --git a/assets/tests/lua/pass_vec3_from_script.lua b/assets/tests/lua/pass_vec3_from_script.lua
new file mode 100644
index 0000000..bd2a772
--- /dev/null
+++ b/assets/tests/lua/pass_vec3_from_script.lua
@@ -0,0 +1,3 @@
+function test_func()
+	rust_func(Vec3(1.5, 2.5, -3.5))
+end
diff --git a/assets/tests/lua/pass_vec3_to_script.lua b/assets/tests/lua/pass_vec3_to_script.lua
new file mode 100644
index 0000000..4a9d395
--- /dev/null
+++ b/assets/tests/lua/pass_vec3_to_script.lua
@@ -0,0 +1,7 @@
+function test_func(vec3)
+	-- raise unless vec3.is_a?(Vec3) # TODO: BevyScriptum::Vec3 and add example how to include it globally like Sinatra does
+	-- raise unless vec3.x == 1.5
+	-- raise unless vec3.y == 2.5
+	-- raise unless vec3.z == -3.5
+	mark_success()
+end
diff --git a/src/runtimes/ruby.rs b/src/runtimes/ruby.rs
index db1f908..74b4b3d 100644
--- a/src/runtimes/ruby.rs
+++ b/src/runtimes/ruby.rs
@@ -4,6 +4,7 @@
 // TODO: maybe unify api and call non thread methods non_send
 // TODO: add tests for entity variable and buitin types for every runtime
 // TODO: line numbers for errors
+// TODO: caan rhai have Vec3 constructor instead of vec3_new
 
 use std::{
     collections::HashMap,