better use of fixtures for resource allocation and

dealocation

test/parser/let.cpp

@@ -90,13 +90,6 @@ let y = 10;\
 let foobar = 103213;\
 ");
 
-        ast::program* program = p->parse_program();
-        check_parser_errors(p->errors);
-
-        REQUIRE_MESSAGE(
-            program != nullptr,
-            "parse_program() returned a null pointer"
-        );
         REQUIRE(program->statements.size() == 3);
 
         struct test {
@@ -115,7 +108,5 @@ let foobar = 103213;\
 
             test_let_statement(stmt, t.expected_identifier);
         }
-
-        delete program;
     }
 }

test/parser/return.cpp

@@ -1,5 +1,3 @@
-#include "ast/ast.hpp"
-#include "parser/parser.hpp"
 #include "utils.hpp"
 
 #include <doctest.h>
@@ -12,13 +10,6 @@ return 10;\
 return 103213;\
 ");
 
-        ast::program* program = p->parse_program();
-        check_parser_errors(p->errors);
-
-        REQUIRE_MESSAGE(
-            program != nullptr,
-            "parse_program() returned a null pointer"
-        );
         REQUIRE(program->statements.size() == 3);
 
         for (const auto stmt : program->statements) {
@@ -30,7 +21,5 @@ return 103213;\
                 "Couldn't cast statement to a return statement"
             );
         }
-
-        delete program;
     }
 }

test/parser/utils.cpp

@@ -1,5 +1,6 @@
 #include "utils.hpp"
 
+#include <doctest.h>
 #include <iostream>
 
 void check_parser_errors(const std::vector<ast::error::error*>& errors) {
@@ -10,6 +11,26 @@ void check_parser_errors(const std::vector<ast::error::error*>& errors) {
     for (const auto& error : errors)
         std::cerr << '\t' << error->what() << "\n";
 
-    // Use doctest's FAIL macro to immediately stop
     FAIL_CHECK("Parser had errors. See stderr for details.");
 }
+
+void ParserFixture::setup(std::string source) {
+    input << source;
+    lexer = new lexer::lexer{input};
+    parser = new parser::parser(*lexer);
+    program = parser->parse_program();
+    check_parser_errors(parser->errors);
+
+    CAPTURE(parser);
+    CAPTURE(program);
+    REQUIRE_MESSAGE(
+        program != nullptr,
+        "parse_program() returned a null pointer"
+    );
+}
+
+ParserFixture::~ParserFixture() {
+    delete lexer;
+    delete parser;
+    delete program;
+}

test/parser/utils.hpp

@@ -1,28 +1,19 @@
-#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;
+    lexer::lexer* lexer = nullptr;
+    parser::parser* parser = nullptr;
+    ast::program* program = nullptr;
 
     ParserFixture() = default;
 
-    void setup(std::string source) {
-        input << source;
-        l = new lexer::lexer{input};
-        p = new parser::parser(*l);
-    }
+    void setup(std::string);
 
-    ~ParserFixture() {
-        delete l;
-        delete p;
-    }
+    ~ParserFixture();
 };