plotscript/token_tests.cpp at master · chris-blackburn/plotscript · GitHub

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#include "catch.hpp"

#include "token.hpp"

TEST_CASE("Test Token creation", "[token]") {
	Token tko(Token::OPEN);

	REQUIRE(tko.type() == Token::OPEN);
	REQUIRE(tko.asString() == "(");

	Token tkc(Token::CLOSE);

	REQUIRE(tkc.type() == Token::CLOSE);
	REQUIRE(tkc.asString() == ")");

	Token tks("thevalue");

	REQUIRE(tks.type() == Token::STRING);
	REQUIRE(tks.asString() == "thevalue");
}

TEST_CASE("Tokenize string literals", "[token]") {
	std::string input = R"(
		("This is a string")
		)";

	std::istringstream iss(input);
	TokenSequenceType tokens = tokenize(iss);

	REQUIRE(tokens.front().type() == Token::OPEN);
	tokens.pop_front();

	REQUIRE(tokens.front().type() == Token::STRING);
	REQUIRE(tokens.front().asString() == "\"This is a string\"");
	tokens.pop_front();

	REQUIRE(tokens.front().type() == Token::CLOSE);
	tokens.pop_front();

	REQUIRE(tokens.empty());
}

TEST_CASE("Tokenize bad string literals", "[token]") {
	std::string input = R"(
		("This is a "string")
		)";

	std::istringstream iss(input);
	TokenSequenceType tokens = tokenize(iss);

	REQUIRE(tokens.front().type() == Token::OPEN);
	tokens.pop_front();

	REQUIRE(tokens.front().type() == Token::STRING);
	REQUIRE(tokens.front().asString() == "\"This is a \"");
	tokens.pop_front();

	REQUIRE(tokens.front().type() == Token::STRING);
	REQUIRE(tokens.front().asString() == "string\"");
	tokens.pop_front();

	REQUIRE(tokens.front().type() == Token::CLOSE);
	tokens.pop_front();

	REQUIRE(tokens.empty());
}

TEST_CASE("Test tokenize", "[token]") {
	std::string input = R"(
( A a aa )aal ; a comment
(aalii)) 3
)";

	std::istringstream iss(input);

	TokenSequenceType tokens = tokenize(iss);

	REQUIRE(tokens.front().type() == Token::OPEN);
	tokens.pop_front();

	REQUIRE(tokens.front().type() == Token::STRING);
	REQUIRE(tokens.front().asString() == "A");
	tokens.pop_front();

	REQUIRE(tokens.front().type() == Token::STRING);
	REQUIRE(tokens.front().asString() == "a");
	tokens.pop_front();

	REQUIRE(tokens.front().type() == Token::STRING);
	REQUIRE(tokens.front().asString() == "aa");
	tokens.pop_front();

	REQUIRE(tokens.front().type() == Token::CLOSE);
	tokens.pop_front();

	REQUIRE(tokens.front().type() == Token::STRING);
	REQUIRE(tokens.front().asString() == "aal");
	tokens.pop_front();

	REQUIRE(tokens.front().type() == Token::OPEN);
	tokens.pop_front();

	REQUIRE(tokens.front().type() == Token::STRING);
	REQUIRE(tokens.front().asString() == "aalii");
	tokens.pop_front();

	REQUIRE(tokens.front().type() == Token::CLOSE);
	tokens.pop_front();

	REQUIRE(tokens.front().type() == Token::CLOSE);
	tokens.pop_front();

	REQUIRE(tokens.front().type() == Token::STRING);
	REQUIRE(tokens.front().asString() == "3");
	tokens.pop_front();

	REQUIRE(tokens.empty());
}