using fixtures (not super necessary, but nice)

test/parser/let.cpp

@@ -83,18 +83,15 @@ TEST_SUITE("Parser: let") {
         }
     }
 
-    TEST_CASE("Parse well formed let statements") {
-        std::stringstream input("\
+    TEST_CASE_FIXTURE(ParserFixture, "Parse well formed let statements") {
+        setup("\
 let x = 5;\
 let y = 10;\
 let foobar = 103213;\
 ");
 
-        lexer::lexer l{input};
-        parser::parser p{l};
-
-        ast::program* program = p.parse_program();
-        check_parser_errors(p.errors);
+        ast::program* program = p->parse_program();
+        check_parser_errors(p->errors);
 
         REQUIRE_MESSAGE(
             program != nullptr,

test/parser/return.cpp

@@ -1,24 +1,19 @@
 #include "ast/ast.hpp"
-#include "lexer/lexer.hpp"
 #include "parser/parser.hpp"
 #include "utils.hpp"
 
 #include <doctest.h>
-#include <sstream>
 
 TEST_SUITE("Parser: return") {
-    TEST_CASE("Parse return statement") {
-        std::stringstream input("\
+    TEST_CASE_FIXTURE(ParserFixture, "Parse return statement") {
+        setup("\
 return 5;\
 return 10;\
 return 103213;\
 ");
 
-        lexer::lexer l{input};
-        parser::parser p{l};
-
-        ast::program* program = p.parse_program();
-        check_parser_errors(p.errors);
+        ast::program* program = p->parse_program();
+        check_parser_errors(p->errors);
 
         REQUIRE_MESSAGE(
             program != nullptr,

test/parser/utils.hpp

@@ -1,6 +1,28 @@
 #include "ast/errors/error.hpp"
+#include "lexer/lexer.hpp"
+#include "parser/parser.hpp"
 
 #include <doctest.h>
+#include <sstream>
 #include <vector>
 
 void check_parser_errors(const std::vector<ast::error::error*>& errors);
+
+struct ParserFixture {
+    std::stringstream input;
+    lexer::lexer* l = nullptr;
+    parser::parser* p = nullptr;
+
+    ParserFixture() = default;
+
+    void setup(std::string source) {
+        input << source;
+        l = new lexer::lexer{input};
+        p = new parser::parser(*l);
+    }
+
+    ~ParserFixture() {
+        delete l;
+        delete p;
+    }
+};