70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
#include "ast/statements/let.hpp"
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#include "ast/ast.hpp"
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#include "utils.hpp"
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#include <doctest.h>
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#include <memory>
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void test_let_statement(ast::statement* stmt, const std::string name) {
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REQUIRE(stmt->token_literal() == "let");
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ast::let_stmt* let_stmt = cast<ast::let_stmt>(stmt);
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REQUIRE(let_stmt->name->value == name);
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REQUIRE(let_stmt->name->token_literal() == name);
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}
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TEST_SUITE("Parser: let") {
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TEST_CASE("Malformed let statement (checking for memory leaks)") {
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SUBCASE("Second token not identifier") {
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test_failing_parsing("let 5 = 5;", {token::type::IDENTIFIER});
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}
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SUBCASE("Third token not '='") {
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test_failing_parsing("let five ! 5;", {token::type::ASSIGN});
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}
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SUBCASE("Missing both identifier and '='") {
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test_failing_parsing("let 5;", {token::type::IDENTIFIER});
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}
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SUBCASE("Multiple parsing errors") {
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test_failing_parsing(
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"let 5; let ! = 5; let five = 5; let five 5; let;",
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{token::type::IDENTIFIER,
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token::type::IDENTIFIER,
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token::type::ASSIGN,
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token::type::IDENTIFIER},
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1
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);
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}
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}
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TEST_CASE_FIXTURE(ParserFixture, "Parse well formed let statements") {
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setup("\
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let x = 5;\
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let y = 10;\
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let foobar = 103213;\
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");
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REQUIRE(program->statements.size() == 3);
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struct test {
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std::string expected_identifier;
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};
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test tests[]{
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"x",
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"y",
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"foobar",
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};
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int i = 0;
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for (const auto& t : tests) {
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ast::statement* stmt = program->statements[i++];
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test_let_statement(stmt, t.expected_identifier);
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}
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}
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}
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