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https://github.com/LadybirdBrowser/ladybird.git
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ac2c3a73b1
Also fixes that it tried to make substrings past the end of the source if we overran the source length.
76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
/*
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* Copyright (c) 2021, David Tuin <davidot@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Parser.h>
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#include <LibTest/TestCase.h>
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TEST_CASE(invalid_unicode_only)
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{
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char const* code = "\xEA\xFD";
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auto lexer = JS::Lexer(code);
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auto token = lexer.next();
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EXPECT_EQ(token.type(), JS::TokenType::Invalid);
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// After this we can get as many eof tokens as we like.
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for (auto i = 0; i < 10; i++) {
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auto eof_token = lexer.next();
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EXPECT_EQ(eof_token.type(), JS::TokenType::Eof);
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}
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}
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TEST_CASE(long_invalid_unicode)
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{
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char const* code = "\xF7";
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auto lexer = JS::Lexer(code);
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auto token = lexer.next();
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EXPECT_EQ(token.type(), JS::TokenType::Invalid);
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// After this we can get as many eof tokens as we like.
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for (auto i = 0; i < 10; i++) {
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auto eof_token = lexer.next();
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EXPECT_EQ(eof_token.type(), JS::TokenType::Eof);
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}
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}
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TEST_CASE(invalid_unicode_and_valid_code)
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{
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char const* code = "\xEA\xFDthrow 1;";
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auto lexer = JS::Lexer(code);
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auto invalid_token = lexer.next();
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EXPECT_EQ(invalid_token.type(), JS::TokenType::Invalid);
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// 0xEA is the start of a three character unicode code point thus it consumes the 't'.
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auto token_after = lexer.next();
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EXPECT_EQ(token_after.value(), "hrow");
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}
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TEST_CASE(long_invalid_unicode_and_valid_code)
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{
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char const* code = "\xF7throw 1;";
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auto lexer = JS::Lexer(code);
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auto invalid_token = lexer.next();
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EXPECT_EQ(invalid_token.type(), JS::TokenType::Invalid);
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// 0xF7 is the start of a four character unicode code point thus it consumes 'thr'.
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auto token_after = lexer.next();
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EXPECT_EQ(token_after.value(), "ow");
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}
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TEST_CASE(invalid_unicode_after_valid_code_and_before_eof)
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{
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char const* code = "let \xEA\xFD;";
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auto lexer = JS::Lexer(code);
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auto let_token = lexer.next();
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EXPECT_EQ(let_token.type(), JS::TokenType::Let);
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auto invalid_token = lexer.next();
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EXPECT_EQ(invalid_token.type(), JS::TokenType::Invalid);
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// It should still get the valid trivia in front.
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EXPECT_EQ(invalid_token.trivia(), " ");
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// After this we can get as many eof tokens as we like.
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for (auto i = 0; i < 10; i++) {
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auto eof_token = lexer.next();
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EXPECT_EQ(eof_token.type(), JS::TokenType::Eof);
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}
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}
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