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112 lines
3.1 KiB
JavaScript
112 lines
3.1 KiB
JavaScript
/*
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These tests deliberately produce syntax errors to check what line the parser thinks we're on.
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Note that line numbers are higher than you might expect as the parsed code is:
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function anonymous(
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) {
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<code>
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}
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⚠ PLEASE MAKE SURE TO NOT LET YOUR EDITOR REMOVE THE LS/PS LINE TERMINATORS!
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*/
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test("LINE FEED is a line terminator", () => {
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expect(() => {
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Function("\n\n@");
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}).toThrowWithMessage(
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SyntaxError,
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"Unexpected token Invalid. Expected CurlyClose (line: 4, column: 1)"
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);
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});
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test("CARRIAGE RETURN is a line terminator", () => {
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expect(() => {
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Function("\r\r@");
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}).toThrowWithMessage(
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SyntaxError,
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"Unexpected token Invalid. Expected CurlyClose (line: 4, column: 1)"
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);
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});
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test("LINE SEPARATOR is a line terminator", () => {
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expect(() => {
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Function("
@");
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}).toThrowWithMessage(
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SyntaxError,
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"Unexpected token Invalid. Expected CurlyClose (line: 4, column: 1)"
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);
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});
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test("PARAGRAPH SEPARATOR is a line terminator", () => {
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expect(() => {
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Function("
@");
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}).toThrowWithMessage(
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SyntaxError,
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"Unexpected token Invalid. Expected CurlyClose (line: 4, column: 1)"
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);
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});
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test("CR LF is counted as only one line terminator", () => {
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expect(() => {
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Function("\r\n\r\n@");
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}).toThrowWithMessage(
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SyntaxError,
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"Unexpected token Invalid. Expected CurlyClose (line: 4, column: 1)"
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);
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});
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test("LF/CR are not allowed in string literal", () => {
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expect(() => {
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Function(`"
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"`);
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}).toThrowWithMessage(SyntaxError, "Unexpected token UnterminatedStringLiteral");
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});
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test("LS/PS are allowed in string literal", () => {
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expect(`"
"`).toEval();
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expect(`"
"`).toEval();
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});
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test("line terminators can be mixed (but please don't)", () => {
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expect(() => {
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Function("\r
\r\n
\n\r@");
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}).toThrowWithMessage(
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SyntaxError,
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"Unexpected token Invalid. Expected CurlyClose (line: 8, column: 1)"
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);
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});
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test("all line terminators are valid for line continuations", () => {
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expect(Function('return "a\\\nb"')()).toBe("ab");
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expect(Function('return "a\\\rb"')()).toBe("ab");
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expect(Function('return "a\\\r\nb"')()).toBe("ab");
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expect(Function('return "a\\
b"')()).toBe("ab");
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expect(Function('return "a\\
b"')()).toBe("ab");
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});
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test("template-literals raw and real value", () => {
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let lastTemplate;
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let lastRaw;
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function tag(cs) {
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lastTemplate = cs[0];
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lastRaw = cs.raw[0];
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}
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function checkTemplate(string_value, expected_template, expected_raw) {
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eval("tag`" + string_value + "`");
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expect(lastTemplate).toBe(expected_template);
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expect(lastRaw).toBe(expected_raw);
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}
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checkTemplate("", "", "");
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checkTemplate("\n", "\n", "\n");
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checkTemplate("\r", "\n", "\n");
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checkTemplate("\r\n", "\n", "\n");
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checkTemplate("\n\r\n", "\n\n", "\n\n");
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checkTemplate("a\\\nb", "ab", "a\\\nb");
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checkTemplate("a\\\rb", "ab", "a\\\nb");
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checkTemplate("a\\
b", "ab", "a\\
b");
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checkTemplate("a\\
b", "ab", "a\\
b");
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});
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