Integration tests for nvim-oxi::mlua

tests/src/lib.rs

@@ -3,6 +3,7 @@
 
 mod api;
 mod r#macro;
+mod mlua;
 
 // Libuv bindings don't work on Windows.
 #[cfg(not(any(target_os = "windows", target_env = "msvc")))]

tests/src/mlua.rs

@@ -0,0 +1,66 @@
+use nvim_oxi::{
+    api,
+    mlua::{self, lua},
+};
+
+#[nvim_oxi::test]
+fn get_variable() {
+    api::set_var("a_varialbe", "Hello!").unwrap();
+
+    let lua = lua();
+
+    let a_variable = lua.load("vim.g.a_varialbe").eval::<String>().unwrap();
+    let not_a_variable =
+        lua.load("vim.g.not_a_varialbe").eval::<mlua::Value>().unwrap();
+
+    assert!(not_a_variable.is_nil());
+    assert_eq!(a_variable, "Hello!");
+}
+
+#[nvim_oxi::test]
+fn set_variable() {
+    lua().load("vim.g.a_varialbe = 'Hello!'").exec().unwrap();
+
+    let var = api::get_var::<String>("a_varialbe").unwrap();
+    assert_eq!(var, "Hello!");
+}
+
+#[nvim_oxi::test]
+fn nvim_api() {
+    let hello = "Hello!";
+
+    let hello1 = lua()
+        .load(format!(
+            "
+            buf = vim.api.nvim_create_buf(true, false)
+            vim.api.nvim_buf_set_lines(buf, 0, 1, true, {{ '{hello}' }})
+            return vim.api.nvim_buf_get_lines(buf, 0, 1, true)[1]
+            "
+        ))
+        .eval::<String>()
+        .unwrap();
+
+    assert_eq!(hello1, hello);
+}
+
+#[nvim_oxi::test]
+fn rust_callback() {
+    let hello: &'static str = "Hello!";
+    let lua = lua();
+    let func = lua
+        .create_function(|_, ()| {
+            api::set_var("a_varialbe", "Hello!").unwrap();
+            Ok(())
+        })
+        .unwrap();
+
+    lua.globals().set("rust_callback", func).unwrap();
+    let hello1 = lua
+        .load("rust_callback(); return vim.g.a_varialbe")
+        .eval::<String>()
+        .unwrap();
+    let hello2 = api::get_var::<String>("a_varialbe").unwrap();
+
+    assert_eq!(hello1, hello);
+    assert_eq!(hello2, hello);
+}