using test suites
This commit is contained in:
Karma Riuk
238
test/lexer.cpp
238
test/lexer.cpp
@@ -6,43 +6,44 @@
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#include <sstream>
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#include <string>
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TEST_CASE("Single character token") {
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struct test {
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token::type expectedType;
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std::string expectedLiteral;
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TEST_SUITE("Lexer") {
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TEST_CASE("Single character token") {
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struct test {
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token::type expectedType;
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std::string expectedLiteral;
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};
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std::string input = "=+(){},;";
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std::istringstream ss(input);
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lexer::lexer l{ss};
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test tests[] = {
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{token::type::ASSIGN, "="},
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{token::type::PLUS, "+"},
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{token::type::LPAREN, "("},
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{token::type::RPAREN, ")"},
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{token::type::LBRACE, "{"},
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{token::type::RBRACE, "}"},
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{token::type::COMMA, ","},
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{token::type::SEMICOLON, ";"},
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{token::type::END_OF_FILE, ""},
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};
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for (const auto& t : tests) {
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token::token tok = l.next_token();
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REQUIRE(tok.type == t.expectedType);
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REQUIRE(tok.literal == t.expectedLiteral);
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}
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};
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std::string input = "=+(){},;";
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std::istringstream ss(input);
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TEST_CASE("More tokens") {
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struct test {
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token::type expectedType;
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std::string expectedLiteral;
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};
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lexer::lexer l{ss};
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test tests[] = {
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{token::type::ASSIGN, "="},
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{token::type::PLUS, "+"},
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{token::type::LPAREN, "("},
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{token::type::RPAREN, ")"},
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{token::type::LBRACE, "{"},
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{token::type::RBRACE, "}"},
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{token::type::COMMA, ","},
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{token::type::SEMICOLON, ";"},
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{token::type::END_OF_FILE, ""},
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};
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for (const auto& t : tests) {
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token::token tok = l.next_token();
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REQUIRE(tok.type == t.expectedType);
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REQUIRE(tok.literal == t.expectedLiteral);
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}
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};
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TEST_CASE("More tokens") {
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struct test {
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token::type expectedType;
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std::string expectedLiteral;
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};
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std::istringstream ss("let five = 5;\
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std::istringstream ss("let five = 5;\
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let ten = 10;\
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let add = fn(x, y) {\
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x + y;\
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@@ -61,101 +62,102 @@ if (5 < 10) {\
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10 != 9;\
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");
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lexer::lexer l{ss};
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lexer::lexer l{ss};
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test tests[] = {
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// clang-format off
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{token::type::LET, "let"},
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{token::type::IDENTIFIER, "five"},
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{token::type::ASSIGN, "="},
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{token::type::INT, "5"},
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{token::type::SEMICOLON, ";"},
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test tests[] = {
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// clang-format off
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{token::type::LET, "let"},
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{token::type::IDENTIFIER, "five"},
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{token::type::ASSIGN, "="},
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{token::type::INT, "5"},
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{token::type::SEMICOLON, ";"},
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{token::type::LET, "let"},
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{token::type::IDENTIFIER, "ten"},
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{token::type::ASSIGN, "="},
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{token::type::INT, "10"},
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{token::type::SEMICOLON, ";"},
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{token::type::LET, "let"},
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{token::type::IDENTIFIER, "ten"},
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{token::type::ASSIGN, "="},
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{token::type::INT, "10"},
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{token::type::SEMICOLON, ";"},
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{token::type::LET, "let"},
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{token::type::IDENTIFIER, "add"},
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{token::type::ASSIGN, "="},
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{token::type::FUNCTION, "fn"},
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{token::type::LPAREN, "("},
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{token::type::IDENTIFIER, "x"},
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{token::type::COMMA, ","},
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{token::type::IDENTIFIER, "y"},
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{token::type::RPAREN, ")"},
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{token::type::LBRACE, "{"},
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{token::type::IDENTIFIER, "x"},
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{token::type::PLUS, "+"},
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{token::type::IDENTIFIER, "y"},
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{token::type::SEMICOLON, ";"},
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{token::type::RBRACE, "}"},
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{token::type::SEMICOLON, ";"},
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{token::type::LET, "let"},
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{token::type::IDENTIFIER, "add"},
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{token::type::ASSIGN, "="},
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{token::type::FUNCTION, "fn"},
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{token::type::LPAREN, "("},
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{token::type::IDENTIFIER, "x"},
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{token::type::COMMA, ","},
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{token::type::IDENTIFIER, "y"},
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{token::type::RPAREN, ")"},
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{token::type::LBRACE, "{"},
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{token::type::IDENTIFIER, "x"},
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{token::type::PLUS, "+"},
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{token::type::IDENTIFIER, "y"},
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{token::type::SEMICOLON, ";"},
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{token::type::RBRACE, "}"},
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{token::type::SEMICOLON, ";"},
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{token::type::LET, "let"},
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{token::type::IDENTIFIER, "result"},
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{token::type::ASSIGN, "="},
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{token::type::IDENTIFIER, "add"},
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{token::type::LPAREN, "("},
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{token::type::IDENTIFIER, "five"},
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{token::type::COMMA, ","},
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{token::type::IDENTIFIER, "ten"},
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{token::type::RPAREN, ")"},
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{token::type::SEMICOLON, ";"},
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{token::type::LET, "let"},
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{token::type::IDENTIFIER, "result"},
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{token::type::ASSIGN, "="},
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{token::type::IDENTIFIER, "add"},
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{token::type::LPAREN, "("},
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{token::type::IDENTIFIER, "five"},
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{token::type::COMMA, ","},
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{token::type::IDENTIFIER, "ten"},
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{token::type::RPAREN, ")"},
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{token::type::SEMICOLON, ";"},
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{token::type::BANG, "!"},
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{token::type::MINUS, "-"},
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{token::type::SLASH, "/"},
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{token::type::ASTERISK, "*"},
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{token::type::INT, "5"},
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{token::type::SEMICOLON, ";"},
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{token::type::BANG, "!"},
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{token::type::MINUS, "-"},
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{token::type::SLASH, "/"},
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{token::type::ASTERISK, "*"},
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{token::type::INT, "5"},
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{token::type::SEMICOLON, ";"},
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{token::type::INT, "5"},
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{token::type::LT, "<"},
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{token::type::INT, "10"},
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{token::type::GT, ">"},
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{token::type::INT, "5"},
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{token::type::SEMICOLON, ";"},
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{token::type::INT, "5"},
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{token::type::LT, "<"},
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{token::type::INT, "10"},
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{token::type::GT, ">"},
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{token::type::INT, "5"},
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{token::type::SEMICOLON, ";"},
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{token::type::IF, "if"},
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{token::type::LPAREN, "("},
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{token::type::INT, "5"},
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{token::type::LT, "<"},
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{token::type::INT, "10"},
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{token::type::RPAREN, ")"},
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{token::type::LBRACE, "{"},
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{token::type::IF, "if"},
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{token::type::LPAREN, "("},
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{token::type::INT, "5"},
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{token::type::LT, "<"},
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{token::type::INT, "10"},
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{token::type::RPAREN, ")"},
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{token::type::LBRACE, "{"},
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{token::type::RETURN, "return"},
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{token::type::TRUE, "true"},
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{token::type::SEMICOLON, ";"},
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{token::type::RETURN, "return"},
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{token::type::TRUE, "true"},
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{token::type::SEMICOLON, ";"},
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{token::type::RBRACE, "}"},
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{token::type::ELSE, "else"},
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{token::type::LBRACE, "{"},
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{token::type::RBRACE, "}"},
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{token::type::ELSE, "else"},
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{token::type::LBRACE, "{"},
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{token::type::RETURN, "return"},
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{token::type::FALSE, "false"},
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{token::type::SEMICOLON, ";"},
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{token::type::RETURN, "return"},
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{token::type::FALSE, "false"},
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{token::type::SEMICOLON, ";"},
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{token::type::RBRACE, "}"},
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{token::type::RBRACE, "}"},
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{token::type::INT, "10"},
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{token::type::EQ, "=="},
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{token::type::INT, "10"},
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{token::type::SEMICOLON, ";"},
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{token::type::INT, "10"},
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{token::type::EQ, "=="},
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{token::type::INT, "10"},
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{token::type::SEMICOLON, ";"},
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{token::type::INT, "10"},
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{token::type::NEQ, "!="},
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{token::type::INT, "9"},
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{token::type::SEMICOLON, ";"},
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// clang-format on
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{token::type::INT, "10"},
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{token::type::NEQ, "!="},
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{token::type::INT, "9"},
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{token::type::SEMICOLON, ";"},
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// clang-format on
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};
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for (const auto& t : tests) {
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token::token tok = l.next_token();
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REQUIRE(tok.type == t.expectedType);
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REQUIRE(tok.literal == t.expectedLiteral);
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}
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};
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for (const auto& t : tests) {
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token::token tok = l.next_token();
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REQUIRE(tok.type == t.expectedType);
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REQUIRE(tok.literal == t.expectedLiteral);
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}
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};
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}
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@@ -57,66 +57,68 @@ void test_failing_let_parsing(
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delete program;
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}
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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_let_parsing("let 5 = 5;", {token::type::IDENTIFIER});
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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_let_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_let_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_let_parsing("let 5;", {token::type::IDENTIFIER});
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}
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SUBCASE("Multiple parsing errors") {
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test_failing_let_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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SUBCASE("Third token not '='") {
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test_failing_let_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_let_parsing("let 5;", {token::type::IDENTIFIER});
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}
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SUBCASE("Multiple parsing errors") {
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test_failing_let_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("Parse let statement") {
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std::stringstream input("\
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TEST_CASE("Parse well formed let statements") {
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std::stringstream input("\
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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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lexer::lexer l{input};
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parser::parser p{l};
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lexer::lexer l{input};
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parser::parser p{l};
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ast::program* program = p.parse_program();
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check_parser_errors(p.errors);
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ast::program* program = p.parse_program();
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check_parser_errors(p.errors);
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REQUIRE_MESSAGE(
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program != nullptr,
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"parse_program() returned a null pointer"
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);
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REQUIRE(program->statements.size() == 3);
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REQUIRE_MESSAGE(
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program != nullptr,
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"parse_program() returned a null pointer"
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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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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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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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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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test_let_statement(stmt, t.expected_identifier);
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}
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delete program;
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}
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delete program;
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}
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@@ -6,34 +6,36 @@
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#include <doctest.h>
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#include <sstream>
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TEST_CASE("Parse return statement") {
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std::stringstream input("\
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TEST_SUITE("Parser: return") {
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TEST_CASE("Parse return statement") {
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std::stringstream input("\
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return 5;\
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return 10;\
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return 103213;\
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");
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lexer::lexer l{input};
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parser::parser p{l};
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lexer::lexer l{input};
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parser::parser p{l};
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ast::program* program = p.parse_program();
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check_parser_errors(p.errors);
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ast::program* program = p.parse_program();
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check_parser_errors(p.errors);
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REQUIRE_MESSAGE(
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program != nullptr,
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"parse_program() returned a null pointer"
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);
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REQUIRE(program->statements.size() == 3);
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for (const auto stmt : program->statements) {
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REQUIRE(stmt->token_literal() == "return");
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ast::return_stmt* let_stmt;
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REQUIRE_NOTHROW(let_stmt = dynamic_cast<ast::return_stmt*>(stmt));
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REQUIRE_MESSAGE(
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let_stmt != nullptr,
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"Couldn't cast statement to a return statement"
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program != nullptr,
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"parse_program() returned a null pointer"
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);
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}
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REQUIRE(program->statements.size() == 3);
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delete program;
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for (const auto stmt : program->statements) {
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REQUIRE(stmt->token_literal() == "return");
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ast::return_stmt* let_stmt;
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REQUIRE_NOTHROW(let_stmt = dynamic_cast<ast::return_stmt*>(stmt));
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REQUIRE_MESSAGE(
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let_stmt != nullptr,
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"Couldn't cast statement to a return statement"
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);
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}
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delete program;
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}
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}
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