Renamed 'rest' to 'expr', added test case and removed unnecessary changes

Signed-off-by: vrnimje <vedantnimjed@gmail.com>

Author: vrnimje

examples/Button.qf

@@ -7,8 +7,5 @@
         "Button2",
         "Exit"
     }
-    Button{
-        "Button3",
-        "Exit"
-    }    
+  
 }

include/quick-ftxui.hpp

@@ -49,7 +49,7 @@ struct input {
 };
 
 struct expression {
-    std::list<node> rest;
+    std::list<node> expr;
 };
 
 // print function for debugging
@@ -87,7 +87,7 @@ BOOST_FUSION_ADAPT_STRUCT(client::quick_ftxui_ast::input,
 )
 
 BOOST_FUSION_ADAPT_STRUCT(client::quick_ftxui_ast::expression,
-                          (std::list<client::quick_ftxui_ast::node>, rest)
+                          (std::list<client::quick_ftxui_ast::node>, expr)
 )
 
 // clang-format on
@@ -161,7 +161,7 @@ void ast_printer::operator()(
               << "Node" << std::endl;
     std::cout << '{' << std::endl;
 
-    for (quick_ftxui_ast::node const &node : expr.rest) {
+    for (quick_ftxui_ast::node const &node : expr.expr) {
         boost::apply_visitor(node_printer(data, indent), node);
     }
 

tests/test1.cpp

@@ -37,6 +37,13 @@ TEST_CASE("Parse Complex") {
         }"));
 }
 
+TEST_CASE("Parse Multiple in any order") {
+    REQUIRE(parse_helper("{\
+        Input{\"amool\" , \"bmpp\", \"cmqq\"}  \
+        Button{\"amool\" , \"bmpp\"}\
+        }"));
+}
+
 TEST_CASE("Parse Recursive") {
     // expect pass
     REQUIRE(parse_helper("{\