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test.cpp
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test.cpp
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#include <optional>
#include "interpreter.hpp"
namespace lexer {
namespace test {
void Run();
}
} // namespace lexer
namespace parser {
namespace test {
void Run();
}
} // namespace parser
namespace interpreter {
namespace test {
void Run();
}
} // namespace interpreter
int main() {
lexer::test::Run();
parser::test::Run();
interpreter::test::Run();
return 0;
}
namespace utils {
namespace test {
namespace color {
std::string kRed{"\033[1;31m"};
std::string kGreen{"\033[1;32m"};
std::string kYellow{"\033[1;33m"};
std::string kReset{"\033[0m"};
} // namespace color
} // namespace test
} // namespace utils
namespace lexer {
namespace test {
using Category = Token::Category;
using TestData = std::pair<std::string, std::vector<Token>>;
using namespace utils::test;
std::vector<TestData> kData = {
// All valid tokens:
TestData{"true false if else then 0 succ pred iszero",
{Token{Category::CONSTANT_TRUE, "true"},
Token{Category::CONSTANT_FALSE, "false"},
Token{Category::KEYWORD_IF, "if"},
Token{Category::KEYWORD_ELSE, "else"},
Token{Category::KEYWORD_THEN, "then"},
Token{Category::CONSTANT_ZERO, "0"},
Token{Category::KEYWORD_SUCC, "succ"},
Token{Category::KEYWORD_PRED, "pred"},
Token{Category::KEYWORD_ISZERO, "iszero"}}},
// Invalid tokens:
TestData{"x", {Token{Category::MARKER_ERROR, "x"}}},
TestData{"1", {Token{Category::MARKER_ERROR, "1"}}},
};
void Run() {
std::cout << color::kYellow << "[Lexer] Running " << kData.size()
<< " tests...\n"
<< color::kReset;
int num_failed = 0;
for (const auto& test : kData) {
Lexer lexer{std::istringstream{test.first}};
bool failed = false;
auto actual_token = lexer.NextToken();
auto expected_token_iter = std::begin(test.second);
for (; actual_token.category != Token::Category::MARKER_END &&
expected_token_iter != std::end(test.second);
actual_token = lexer.NextToken(), ++expected_token_iter) {
if (actual_token != *expected_token_iter) {
std::cout << color::kRed << "Test failed:" << color::kReset
<< "\n";
std::cout << " Input program: " << test.first << "\n";
std::cout << color::kGreen
<< " Expected token: " << color::kReset
<< expected_token_iter->DebugString() << ", "
<< color::kRed << "actual token: " << color::kReset
<< actual_token.DebugString() << "\n";
failed = true;
break;
}
}
if (!failed && (actual_token.category != Token::Category::MARKER_END ||
expected_token_iter != std::end(test.second))) {
std::cout << "Test failed:\n Input program: " << test.first
<< "\n Unexpected number of tokens.\n";
failed = true;
}
if (failed) {
++num_failed;
}
}
std::cout << color::kYellow << "Results: " << color::kReset
<< (kData.size() - num_failed) << " out of " << kData.size()
<< " tests passed.\n";
}
} // namespace test
} // namespace lexer
namespace parser {
namespace test {
using namespace utils::test;
using Category = lexer::Token::Category;
struct TestData {
std::string input_program_;
// The absense of an expected AST means that: for the test being specified,
// a parse error is expected.
std::optional<Term> expected_ast_;
};
std::vector<TestData> kData{
TestData{"0", Term(Category::CONSTANT_ZERO)},
TestData{"true", Term(Category::CONSTANT_TRUE)},
TestData{"false", Term(Category::CONSTANT_FALSE)},
TestData{"if false then true else 0",
Term(Category::KEYWORD_IF, {Term(Category::CONSTANT_FALSE),
Term(Category::CONSTANT_TRUE),
Term(Category::CONSTANT_ZERO)})},
TestData{"if false then true else false",
Term(Category::KEYWORD_IF, {Term(Category::CONSTANT_FALSE),
Term(Category::CONSTANT_TRUE),
Term(Category::CONSTANT_FALSE)})},
TestData{
"if false then true else succ 0",
Term(Category::KEYWORD_IF,
{Term(Category::CONSTANT_FALSE), Term(Category::CONSTANT_TRUE),
Term(Category::KEYWORD_SUCC, {Term(Category::CONSTANT_ZERO)})})},
TestData{
"if false then true else succ succ 0",
Term(Category::KEYWORD_IF,
{Term(Category::CONSTANT_FALSE), Term(Category::CONSTANT_TRUE),
Term(Category::KEYWORD_SUCC,
{Term(Category::KEYWORD_SUCC,
{Term(Category::CONSTANT_ZERO)})})})},
TestData{
"if false then true else succ succ succ 0",
Term(Category::KEYWORD_IF,
{Term(Category::CONSTANT_FALSE), Term(Category::CONSTANT_TRUE),
Term(Category::KEYWORD_SUCC,
{Term(Category::KEYWORD_SUCC,
{Term(Category::KEYWORD_SUCC,
{Term(Category::CONSTANT_ZERO)})})})})},
TestData{
"if succ 0 then succ 0 else true",
Term(Category::KEYWORD_IF,
{Term(Category::KEYWORD_SUCC, {Term(Category::CONSTANT_ZERO)}),
Term(Category::KEYWORD_SUCC, {Term(Category::CONSTANT_ZERO)}),
Term(Category::CONSTANT_TRUE)})},
TestData{"if true then false else true",
Term(Category::KEYWORD_IF, {Term(Category::CONSTANT_TRUE),
Term(Category::CONSTANT_FALSE),
Term(Category::CONSTANT_TRUE)})},
TestData{"if true then succ 0 else 0",
Term(Category::KEYWORD_IF, {Term(Category::CONSTANT_TRUE),
Term(Category::KEYWORD_SUCC,
{Term(Category::CONSTANT_ZERO)}),
Term(Category::CONSTANT_ZERO)})},
TestData{"if true then succ 0 else true",
Term(Category::KEYWORD_IF, {Term(Category::CONSTANT_TRUE),
Term(Category::KEYWORD_SUCC,
{Term(Category::CONSTANT_ZERO)}),
Term(Category::CONSTANT_TRUE)})},
TestData{
"if true then true else succ 0",
Term(Category::KEYWORD_IF,
{Term(Category::CONSTANT_TRUE), Term(Category::CONSTANT_TRUE),
Term(Category::KEYWORD_SUCC, {Term(Category::CONSTANT_ZERO)})})},
TestData{
"if if true then false else true then true else false",
Term(Category::KEYWORD_IF,
{Term(Category::KEYWORD_IF, {Term(Category::CONSTANT_TRUE),
Term(Category::CONSTANT_FALSE),
Term(Category::CONSTANT_TRUE)}),
Term(Category::CONSTANT_TRUE), Term(Category::CONSTANT_FALSE)})},
TestData{"iszero 0",
Term(Category::KEYWORD_ISZERO, {Term(Category::CONSTANT_ZERO)})},
TestData{"iszero pred succ succ 0",
Term(Category::KEYWORD_ISZERO,
{Term(Category::KEYWORD_PRED,
{Term(Category::KEYWORD_SUCC,
{Term(Category::KEYWORD_SUCC,
{Term(Category::CONSTANT_ZERO)})})})})},
TestData{"pred pred 0", Term(Category::KEYWORD_PRED,
{Term(Category::KEYWORD_PRED,
{Term(Category::CONSTANT_ZERO)})})},
TestData{"pred pred if true then true else false",
Term(Category::KEYWORD_PRED,
{Term(Category::KEYWORD_PRED,
{Term(Category::KEYWORD_IF,
{Term(Category::CONSTANT_TRUE),
Term(Category::CONSTANT_TRUE),
Term(Category::CONSTANT_FALSE)})})})},
TestData{"pred succ 0", Term(Category::KEYWORD_PRED,
{Term(Category::KEYWORD_SUCC,
{Term(Category::CONSTANT_ZERO)})})},
TestData{"pred succ if true then true else false",
Term(Category::KEYWORD_PRED,
{Term(Category::KEYWORD_SUCC,
{Term(Category::KEYWORD_IF,
{Term(Category::CONSTANT_TRUE),
Term(Category::CONSTANT_TRUE),
Term(Category::CONSTANT_FALSE)})})})},
TestData{"pred succ pred 0",
Term(Category::KEYWORD_PRED,
{Term(Category::KEYWORD_SUCC,
{Term(Category::KEYWORD_PRED,
{Term(Category::CONSTANT_ZERO)})})})},
TestData{"pred succ pred succ 0",
Term(Category::KEYWORD_PRED,
{Term(Category::KEYWORD_SUCC,
{Term(Category::KEYWORD_PRED,
{Term(Category::KEYWORD_SUCC,
{Term(Category::CONSTANT_ZERO)})})})})},
TestData{
"succ if true then true else false",
Term(Category::KEYWORD_SUCC,
{Term(Category::KEYWORD_IF, {Term(Category::CONSTANT_TRUE),
Term(Category::CONSTANT_TRUE),
Term(Category::CONSTANT_FALSE)})})},
TestData{"succ succ true", Term(Category::KEYWORD_SUCC,
{Term(Category::KEYWORD_SUCC,
{Term(Category::CONSTANT_TRUE)})})},
// Expected parse errors.
TestData{"succ"},
TestData{"if else false"},
TestData{"if if true then false else true then true else"},
TestData{"if if true then false else true then true else false if"},
TestData{"if then else succ pred"},
TestData{"if then else succ pred 0 true false"},
TestData{"if then else succ pred 0 true false test"},
TestData{"if true"},
TestData{"if true else false"},
TestData{"if true then succ 1 else true"},
TestData{"pred"},
TestData{"pred pred"},
TestData{"pred succ"},
TestData{"pred succ 1"},
TestData{"pred succ if true then true false"},
TestData{"succ"},
TestData{"succ 1"},
TestData{"succ pred 0 pred"},
TestData{"succ pred 0 pred 0"},
TestData{"succ pred 0 presd"},
TestData{"succ succ 1"},
};
void Run() {
std::cout << color::kYellow << "[Parser] Running " << kData.size()
<< " tests...\n"
<< color::kReset;
int num_failed = 0;
for (const auto& test : kData) {
Parser parser{std::istringstream{test.input_program_}};
Term res;
try {
res = parser.ParseProgram();
if (*test.expected_ast_ != res) {
std::cout << color::kRed << "Test failed:" << color::kReset
<< "\n";
std::cout << " Input program: " << test.input_program_ << "\n";
std::cout << color::kGreen
<< " Expected AST: " << color::kReset << "\n"
<< test.expected_ast_->ASTString(4) << "\n";
std::cout << color::kRed << " Actual AST: " << color::kReset
<< "\n"
<< res.ASTString(4) << "\n";
++num_failed;
}
} catch (std::exception& ex) {
if (test.expected_ast_) {
// Unexpected parse error.
std::cout << color::kRed << "Test failed:" << color::kReset
<< "\n";
std::cout << " Input program: " << test.input_program_ << "\n";
std::cout << color::kGreen
<< " Expected AST: " << color::kReset << "\n"
<< test.expected_ast_->ASTString(4) << "\n";
std::cout << color::kRed << " Parsing failed." << color::kReset
<< "\n";
++num_failed;
}
continue;
}
// Unexpected parse success.
if (!test.expected_ast_) {
std::cout << color::kRed << "Test failed:" << color::kReset << "\n";
std::cout << " Input program: " << test.input_program_ << "\n";
std::cout << color::kGreen << " Expected parsing error"
<< color::kReset << "\n";
std::cout << color::kRed << " Parsed AST: " << color::kReset
<< "\n"
<< res.ASTString(4) << "\n";
++num_failed;
}
}
std::cout << color::kYellow << "Results: " << color::kReset
<< (kData.size() - num_failed) << " out of " << kData.size()
<< " tests passed.\n";
}
} // namespace test
} // namespace parser
namespace interpreter {
namespace test {
using namespace utils::test;
using namespace type_checker;
struct TestData {
std::string input_program_;
std::pair<std::string, Type> expected_eval_result_;
};
std::vector<TestData> kData{
TestData{"0", {"0", Type::Nat}},
TestData{"true", {"true", Type::Bool}},
TestData{"false", {"false", Type::Bool}},
TestData{"if false then true else 0", {"0", Type::Nat}},
TestData{"if false then true else false", {"false", Type::Bool}},
TestData{"if false then true else succ 0", {"1", Type::Nat}},
TestData{"if false then true else succ succ 0", {"2", Type::Nat}},
TestData{"if false then true else succ succ succ 0", {"3", Type::Nat}},
TestData{"if succ 0 then succ 0 else true", {"<ERROR>", Type::IllTyped}},
TestData{"if true then false else true", {"false", Type::Bool}},
TestData{"if true then succ 0 else 0", {"1", Type::Nat}},
TestData{"if true then succ 0 else true", {"1", Type::Nat}},
TestData{"if true then true else succ 0", {"true", Type::Bool}},
TestData{"if if true then false else true then true else false",
{"false", Type::Bool}},
TestData{"iszero 0", {"true", Type::Bool}},
TestData{"iszero pred succ succ 0", {"false", Type::Bool}},
TestData{"pred pred 0", {"0", Type::Nat}},
TestData{"pred pred if true then true else false",
{"<ERROR>", Type::IllTyped}},
TestData{"pred succ 0", {"0", Type::Nat}},
TestData{"pred succ if true then true else false",
{"<ERROR>", Type::IllTyped}},
TestData{"pred succ pred 0", {"0", Type::Nat}},
TestData{"pred succ pred succ 0", {"0", Type::Nat}},
TestData{"succ if true then true else false", {"<ERROR>", Type::IllTyped}},
TestData{"succ succ true", {"<ERROR>", Type::IllTyped}},
};
void Run() {
std::cout << color::kYellow << "[Interpreter] Running " << kData.size()
<< " tests...\n"
<< color::kReset;
int num_failed = 0;
for (const auto& test : kData) {
Interpreter interpreter{};
std::pair<std::string, type_checker::Type> actual_eval_res;
try {
actual_eval_res = interpreter.Interpret(
parser::Parser{std::istringstream{test.input_program_}}
.ParseProgram());
} catch (std::exception& ex) {
std::cout << color::kRed << "Test failed:" << color::kReset << "\n";
std::cout << " Input program: " << test.input_program_ << "\n";
std::cout << color::kGreen
<< " Expected evaluation result: " << color::kReset
<< test.expected_eval_result_.first << ": "
<< test.expected_eval_result_.second << "\n";
std::cout << color::kRed << " Parsing failed." << color::kReset
<< "\n";
++num_failed;
continue;
}
if (actual_eval_res.first != test.expected_eval_result_.first ||
actual_eval_res.second != test.expected_eval_result_.second) {
std::cout << color::kRed << "Test failed:" << color::kReset << "\n";
std::cout << " Input program: " << test.input_program_ << "\n";
std::cout << color::kGreen
<< " Expected evaluation result: " << color::kReset
<< test.expected_eval_result_.first << ": "
<< test.expected_eval_result_.second << "\n";
std::cout << color::kRed
<< " Actual evaluation result: " << color::kReset
<< actual_eval_res.first << ": " << actual_eval_res.second
<< "\n";
++num_failed;
}
}
std::cout << color::kYellow << "Results: " << color::kReset
<< (kData.size() - num_failed) << " out of " << kData.size()
<< " tests passed.\n";
}
} // namespace test
} // namespace interpreter