Eryn Wells
a23b917785
Extend the lexer to support Scheme bools like this: #t, #f, #true, #false. Add some positive tests for this too.
65 lines
1.8 KiB
Rust
65 lines
1.8 KiB
Rust
/* lexer/tests/single_token.rs
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* Eryn Wells <eryn@erynwells.me>
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*/
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//! Tests that single tokens are matches by the lexer.
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extern crate sibillexer;
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use sibillexer::{Lexer, Lex, Token};
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#[test]
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fn lexer_finds_left_paren() {
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let expected_lex = Lex::new(Token::LeftParen, "(", 0, 0);
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let mut lex = Lexer::new("(".chars());
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assert_eq!(lex.next(), Some(Ok(expected_lex)));
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assert_eq!(lex.next(), None);
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}
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#[test]
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fn lexer_finds_right_paren() {
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let expected_lex = Lex::new(Token::RightParen, ")", 0, 0);
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let mut lex = Lexer::new(")".chars());
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assert_eq!(lex.next(), Some(Ok(expected_lex)));
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assert_eq!(lex.next(), None);
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}
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#[test]
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fn lexer_finds_id() {
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let expected_lex = Lex::new(Token::Id, "abc", 0, 0);
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let mut lex = Lexer::new("abc".chars());
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assert_eq!(lex.next(), Some(Ok(expected_lex)));
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assert_eq!(lex.next(), None);
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}
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#[test]
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fn bool_short_true() {
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let expected_lex = Lex::new(Token::Bool(true), "#t", 0, 0);
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let mut lex = Lexer::new("#t".chars());
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assert_eq!(lex.next(), Some(Ok(expected_lex)));
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assert_eq!(lex.next(), None);
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}
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#[test]
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fn bool_short_false() {
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let expected_lex = Lex::new(Token::Bool(false), "#f", 0, 0);
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let mut lex = Lexer::new("#f".chars());
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assert_eq!(lex.next(), Some(Ok(expected_lex)));
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assert_eq!(lex.next(), None);
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}
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#[test]
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fn bool_long_true() {
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let expected_lex = Lex::new(Token::Bool(true), "#true", 0, 0);
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let mut lex = Lexer::new("#true".chars());
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assert_eq!(lex.next(), Some(Ok(expected_lex)));
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assert_eq!(lex.next(), None);
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}
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#[test]
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fn bool_long_false() {
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let expected_lex = Lex::new(Token::Bool(false), "#false", 0, 0);
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let mut lex = Lexer::new("#false".chars());
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assert_eq!(lex.next(), Some(Ok(expected_lex)));
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assert_eq!(lex.next(), None);
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}
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