plugins/rustaceanvim: update options

plugins/languages/rustaceanvim.nix

@@ -27,16 +27,48 @@ in
       example = null;
     };
 
-    tools = {
+    tools =
-      executor = helpers.defaultNullOpts.mkNullable (
+      let
-        with helpers.nixvimTypes;
+        executors = [
-        either strLuaFn (enum [
           "termopen"
           "quickfix"
           "toggleterm"
           "vimux"
-        ])
+          "neotest"
-      ) "termopen" "How to execute terminal commands.";
+        ];
+        testExecutors = executors ++ [ "background" ];
+      in
+      {
+        executor = helpers.defaultNullOpts.mkEnum executors "termopen" ''
+          `{execute_command}  (fun(cmd:string,args:string[],cwd:string|nil,opts?:RustaceanExecutorOpts))`
+          The executor to use for runnables/debuggables. 
+
+          Example:
+          ```lua
+          {
+            execute_command = function(command, args, cwd, _)
+              require('toggleterm.terminal').Terminal
+                :new({
+                  dir = cwd,
+                  cmd = require('rustaceanvim.shell').make_command_from_args(command, args),
+                  close_on_exit = false,
+                  direction = 'vertical',
+                })
+                :toggle()
+            end
+          }
+          ```
+        '';
+
+        testExecutor = helpers.defaultNullOpts.mkEnum testExecutors "termopen" ''
+          `{execute_command}  (fun(cmd:string,args:string[],cwd:string|nil,opts?:RustaceanExecutorOpts))`
+          The executor to use for runnables that are tests/testables 
+        '';
+
+        crateTestExecutor = helpers.defaultNullOpts.mkEnum testExecutors "termopen" ''
+          `{execute_command}  (fun(cmd:string,args:string[],cwd:string|nil,opts?:RustaceanExecutorOpts))`
+          The executor to use for runnables that are crate test suites (--all-targets)
+        '';
 
         onInitialized = helpers.mkNullOrLuaFn ''
           `fun(health:RustAnalyzerInitializedStatus)`
@@ -238,6 +270,8 @@ in
           {
             tools = with tools; {
               inherit executor;
+              test_executor = testExecutor;
+              crate_test_executor = crateTestExecutor;
               on_initialized = onInitialized;
               reload_workspace_from_cargo_toml = reloadWorkspaceFromCargoToml;
               hover_actions = {