mirror of
https://github.com/roc-lang/roc.git
synced 2024-09-22 16:30:04 +03:00
1353 lines
25 KiB
Rust
1353 lines
25 KiB
Rust
#[macro_use]
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extern crate pretty_assertions;
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#[macro_use]
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extern crate indoc;
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extern crate bumpalo;
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#[macro_use]
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extern crate roc;
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#[cfg(test)]
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mod test_format {
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use bumpalo::collections::String;
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use bumpalo::Bump;
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use roc::fmt::def::fmt_def;
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use roc::fmt::expr::fmt_expr;
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use roc::fmt::module::fmt_module;
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use roc::parse;
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use roc::parse::ast::{Attempting, Expr};
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use roc::parse::blankspace::space0_before;
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use roc::parse::module::{module, module_defs};
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use roc::parse::parser::{Fail, Parser, State};
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fn parse_with<'a>(arena: &'a Bump, input: &'a str) -> Result<Expr<'a>, Fail> {
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let state = State::new(&input, Attempting::Module);
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let parser = space0_before(loc!(parse::expr(0)), 0);
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let answer = parser.parse(&arena, state);
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answer
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.map(|(loc_expr, _)| loc_expr.value)
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.map_err(|(fail, _)| fail)
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}
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fn expr_formats_to(input: &str, expected: &str) {
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let arena = Bump::new();
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let input = input.trim_end();
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let expected = expected.trim_end();
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match parse_with(&arena, input) {
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Ok(actual) => {
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let mut buf = String::new_in(&arena);
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fmt_expr(&mut buf, &actual, 0, false, true);
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assert_eq!(buf, expected)
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},
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Err(error) => panic!("Unexpected parse failure when parsing this for formatting:\n\n{:?}\n\nParse error was:\n\n{:?}\n\n", input, error)
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}
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}
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fn expr_formats_same(input: &str) {
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expr_formats_to(input, input);
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}
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fn module_formats_to(src: &str, expected: &str) {
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let arena = Bump::new();
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let src = src.trim_end();
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let expected = expected.trim_end();
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match module().parse(&arena, State::new(&src, Attempting::Module)) {
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Ok((actual, state)) => {
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let mut buf = String::new_in(&arena);
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fmt_module(&mut buf, &actual);
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match module_defs().parse(&arena, state) {
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Ok((loc_defs, _)) => {
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for loc_def in loc_defs {
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fmt_def(&mut buf, arena.alloc(loc_def.value), 0);
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}
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}
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Err(error) => panic!("Unexpected parse failure when parsing this for defs formatting:\n\n{:?}\n\nParse error was:\n\n{:?}\n\n", src, error)
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}
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assert_eq!(buf, expected)
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},
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Err(error) => panic!("Unexpected parse failure when parsing this for module header formatting:\n\n{:?}\n\nParse error was:\n\n{:?}\n\n", src, error)
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};
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}
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fn module_formats_same(input: &str) {
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module_formats_to(input, input);
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}
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// STRING LITERALS
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#[test]
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fn empty_string() {
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expr_formats_same(indoc!(
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r#"
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""
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"#
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));
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}
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#[test]
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fn def_with_comment() {
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expr_formats_same(indoc!(
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r#"
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# This variable is for greeting
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a = "Hello"
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a
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"#
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));
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}
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#[test]
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fn def_with_comment_and_extra_space() {
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expr_formats_to(
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indoc!(
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r#"
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# This variable is for greeting
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a = "Hello"
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a
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"#
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),
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indoc!(
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r#"
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# This variable is for greeting
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a = "Hello"
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a
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"#
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),
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);
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}
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#[test]
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fn func_def() {
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expr_formats_same(indoc!(
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r#"
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f = \x, y ->
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x
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f 4
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"#
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));
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}
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#[test]
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fn new_line_above_return() {
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expr_formats_to(
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indoc!(
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r#"
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f = \x, y ->
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y = 4
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z = 8
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x
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"string"
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"#
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),
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indoc!(
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r#"
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f = \x, y ->
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y = 4
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z = 8
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x
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"string"
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"#
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),
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);
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expr_formats_same(indoc!(
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r#"
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f = \x, y ->
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a = 3
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b = 6
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c
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"string"
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"#
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));
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}
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#[test]
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fn basic_string() {
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expr_formats_same(indoc!(
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r#"
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"blah"
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"#
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));
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}
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#[test]
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fn escaped_unicode_string() {
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expr_formats_same(indoc!(
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r#"
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"unicode: \u{A00A}!"
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"#
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));
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}
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#[test]
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fn escaped_quote_string() {
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expr_formats_same(indoc!(
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r#"
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"\""
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"#
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));
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}
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#[test]
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fn empty_block_string() {
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expr_formats_same(indoc!(
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r#"
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""""""
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"#
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));
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}
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#[test]
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fn basic_block_string() {
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expr_formats_same(indoc!(
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r#"
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"""blah"""
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"#
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));
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}
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#[test]
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fn newlines_block_string() {
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expr_formats_same(indoc!(
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r#"
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"""blah
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spam
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foo"""
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"#
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));
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}
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#[test]
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fn quotes_block_string() {
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expr_formats_same(indoc!(
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r#"
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"""
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"" \""" ""\"
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"""
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"#
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));
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}
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#[test]
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fn zero() {
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expr_formats_same(indoc!(
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r#"
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0
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"#
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));
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}
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#[test]
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fn zero_point_zero() {
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expr_formats_same(indoc!(
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r#"
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0.0
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"#
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));
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}
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#[test]
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fn int_with_underscores() {
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expr_formats_same(indoc!(
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r#"
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1_23_456
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"#
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));
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}
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#[test]
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fn float_with_underscores() {
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expr_formats_same(indoc!(
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r#"
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1_23_456.7_89_10
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"#
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));
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}
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#[test]
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fn multi_arg_closure() {
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expr_formats_same(indoc!(
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r#"
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\a, b, c -> a b c
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"#
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));
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}
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#[test]
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fn destructure_tag_closure() {
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expr_formats_same(indoc!(
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r#"
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\Foo a -> Foo a
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"#
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));
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}
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#[test]
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fn destructure_nested_tag_closure() {
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expr_formats_same(indoc!(
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r#"
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\Foo (Bar a) -> Foo (Bar a)
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"#
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));
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}
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// DEFS
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#[test]
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fn single_def() {
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expr_formats_same(indoc!(
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r#"
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x = 5
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42
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"#
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));
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}
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#[test]
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fn two_defs() {
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expr_formats_same(indoc!(
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r#"
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x = 5
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y = 10
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42
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"#
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));
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expr_formats_to(
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indoc!(
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r#"
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x = 5
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y = 10
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42
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"#
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),
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indoc!(
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r#"
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x = 5
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y = 10
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42
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"#
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),
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);
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}
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// #[test]
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// fn defs_with_defs() {
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// expr_formats_to(indoc!(
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// r#"
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// x =
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// y = 4
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// z = 8
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// w
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//
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// x
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// "#
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// ), indoc!(
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// r#"
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// x =
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// y = 4
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// z = 8
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//
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// w
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//
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// x
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// "#
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// ));
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// }
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#[test]
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fn comment_between_two_defs() {
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expr_formats_same(indoc!(
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r#"
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x = 5
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# Hello
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y = 10
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42
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"#
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));
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expr_formats_same(indoc!(
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r#"
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x = 5
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# Hello
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# two comments
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y = 10
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42
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"#
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));
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expr_formats_same(indoc!(
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r#"
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x = 5
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# Hello
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# two comments
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y = 10
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# v-- This is the return value
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42
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"#
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));
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}
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#[test]
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fn space_between_comments() {
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expr_formats_to(
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indoc!(
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r#"
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# 9
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# A
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# B
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# C
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9
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"#
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),
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indoc!(
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r#"
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# 9
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# A
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# B
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# C
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9
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"#
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),
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);
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}
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#[test]
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fn reduce_space_between_comments() {
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expr_formats_to(
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indoc!(
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r#"
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# First
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# Second
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x
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"#
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),
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indoc!(
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r#"
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# First
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# Second
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x
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"#
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),
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);
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expr_formats_to(
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indoc!(
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r#"
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f = \x ->
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# 1st
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|
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# 2nd
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x
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f 4
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"#
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),
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indoc!(
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r#"
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f = \x ->
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# 1st
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# 2nd
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x
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f 4
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"#
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),
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);
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}
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#[test]
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fn doesnt_detect_comment_in_comment() {
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expr_formats_same(indoc!(
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r#"
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# One Comment # Still one Comment
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9
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"#
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));
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}
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#[test]
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fn parenthetical_def() {
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expr_formats_same(indoc!(
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r#"
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(UserId userId) = 5
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y = 10
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42
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"#
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));
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expr_formats_same(indoc!(
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r#"
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# A
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(UserId userId) = 5
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# B
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y = 10
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42
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"#
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));
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}
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#[test]
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fn record_destructuring() {
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expr_formats_same(indoc!(
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r#"
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{ x, y } = 5
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{ x: 5 } = { x: 5 }
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|
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42
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"#
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));
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}
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// #[test]
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// fn record_field_destructuring() {
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// expr_formats_same(indoc!(
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// r#"
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// when foo is
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// { x: 5 } -> 42
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// "#
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// ));
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// }
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#[test]
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fn record_updating() {
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expr_formats_same(indoc!(
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r#"
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{ shoes & leftShoe: nothing }
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"#
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));
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expr_formats_to(
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indoc!(
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r#"
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{ shoes & rightShoe : nothing }
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"#
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),
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indoc!(
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r#"
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{ shoes & rightShoe: nothing }
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"#
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),
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);
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expr_formats_to(
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indoc!(
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r#"
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{ shoes & rightShoe : nothing }
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"#
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),
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indoc!(
|
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r#"
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{ shoes & rightShoe: nothing }
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"#
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),
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);
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expr_formats_same(indoc!(
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r#"
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{ shoes &
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rightShoe: newRightShoe,
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leftShoe: newLeftShoe
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}
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"#
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));
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expr_formats_to(
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indoc!(
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r#"
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{ shoes
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& rightShoe: bareFoot
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, leftShoe: bareFoot }
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"#
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),
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indoc!(
|
|
r#"
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{ shoes &
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rightShoe: bareFoot,
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leftShoe: bareFoot
|
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}
|
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"#
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),
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);
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}
|
|
|
|
#[test]
|
|
fn def_closure() {
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expr_formats_same(indoc!(
|
|
r#"
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identity = \a -> a
|
|
|
|
identity 42
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|
"#
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));
|
|
|
|
expr_formats_same(indoc!(
|
|
r#"
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|
identity = \a ->
|
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a
|
|
|
|
identity 44
|
|
"#
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|
));
|
|
|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
identity = \a -> a
|
|
|
|
# Hello
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|
identity 40
|
|
"#
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|
));
|
|
|
|
// expr_formats_to(indoc!(
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// r#"
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// identity = \a
|
|
// -> a
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|
//
|
|
// identity 41
|
|
// "#
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|
// ), indoc!(
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|
// r#"
|
|
// identity = \a ->
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// a
|
|
//
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|
// identity 41
|
|
// "#
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|
// ));
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|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
identity = \a,
|
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b
|
|
-> a
|
|
|
|
identity 43
|
|
"#
|
|
));
|
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|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
identity = \a,
|
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b,
|
|
# it's c!!
|
|
c
|
|
-> a
|
|
|
|
identity 43
|
|
"#
|
|
));
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|
}
|
|
|
|
// LIST
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|
#[test]
|
|
fn empty_list() {
|
|
expr_formats_same("[]");
|
|
expr_formats_to("[ ]", "[]");
|
|
}
|
|
|
|
#[test]
|
|
fn one_item_list() {
|
|
expr_formats_same(indoc!("[ 4 ] "));
|
|
}
|
|
|
|
#[test]
|
|
fn two_item_list() {
|
|
expr_formats_same(indoc!("[ 7, 8 ] "));
|
|
expr_formats_to(indoc!("[ 7 , 8 ] "), indoc!("[ 7, 8 ] "));
|
|
}
|
|
|
|
#[test]
|
|
fn multi_line_list() {
|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
[
|
|
7,
|
|
8,
|
|
9
|
|
]
|
|
"#
|
|
));
|
|
|
|
expr_formats_to(
|
|
indoc!(
|
|
r#"
|
|
[ 17
|
|
, 18
|
|
, 19
|
|
]
|
|
"#
|
|
),
|
|
indoc!(
|
|
r#"
|
|
[
|
|
17,
|
|
18,
|
|
19
|
|
]
|
|
"#
|
|
),
|
|
);
|
|
|
|
expr_formats_to(
|
|
indoc!(
|
|
r#"
|
|
[ 27
|
|
|
|
, 28
|
|
|
|
|
|
, 29
|
|
]
|
|
"#
|
|
),
|
|
indoc!(
|
|
r#"
|
|
[
|
|
27,
|
|
28,
|
|
29
|
|
]
|
|
"#
|
|
),
|
|
);
|
|
|
|
// expr_formats_to(indoc!(
|
|
// r#"
|
|
// [
|
|
// # Thirty Seven
|
|
//
|
|
// 37
|
|
// # Thirty Eight
|
|
// , 38
|
|
//
|
|
//
|
|
// , 39
|
|
// ]
|
|
// "#
|
|
// ), indoc!(
|
|
// r#"
|
|
// [
|
|
// # Thirty Seven
|
|
// 37,
|
|
// # Thirty Eight
|
|
// 38,
|
|
// 39
|
|
// ]
|
|
// "#
|
|
// ));
|
|
}
|
|
|
|
// RECORD LITERALS
|
|
|
|
#[test]
|
|
fn empty_record() {
|
|
expr_formats_same("{}");
|
|
}
|
|
|
|
#[test]
|
|
fn one_field() {
|
|
expr_formats_same("{ x: 4 }");
|
|
}
|
|
|
|
#[test]
|
|
fn two_fields() {
|
|
expr_formats_same("{ x: 4, y: 42 }");
|
|
}
|
|
|
|
#[test]
|
|
fn two_fields_newline() {
|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
{
|
|
x: 4,
|
|
y: 42
|
|
}
|
|
"#
|
|
));
|
|
}
|
|
|
|
// #[test]
|
|
// fn multi_line_list_def() {
|
|
// expr_formats_same(indoc!(
|
|
// r#"
|
|
// scores =
|
|
// [
|
|
// 5,
|
|
// 10
|
|
// ]
|
|
//
|
|
// scores
|
|
// "#
|
|
// ));
|
|
// }
|
|
//
|
|
// #[test]
|
|
// fn multi_line_record_def() {
|
|
// expr_formats_same(indoc!(
|
|
// r#"
|
|
// pos =
|
|
// {
|
|
// x: 5,
|
|
// x: 10
|
|
// }
|
|
//
|
|
// pos
|
|
// "#
|
|
// ));
|
|
// }
|
|
|
|
#[test]
|
|
fn two_fields_center_newline() {
|
|
expr_formats_to(
|
|
indoc!(
|
|
r#"
|
|
{ x: 4,
|
|
y: 42
|
|
}
|
|
"#
|
|
),
|
|
indoc!(
|
|
r#"
|
|
{
|
|
x: 4,
|
|
y: 42
|
|
}
|
|
"#
|
|
),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn one_unnamed_field() {
|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
foo = 4
|
|
|
|
{ foo }
|
|
"#
|
|
));
|
|
}
|
|
|
|
// IF
|
|
|
|
#[test]
|
|
fn single_line_if() {
|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
if foo bar then a b c else d e f
|
|
"#
|
|
));
|
|
|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
if foo (a b c) then a b c else d e f
|
|
"#
|
|
));
|
|
}
|
|
|
|
#[test]
|
|
fn multi_line_if_condition() {
|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
if
|
|
waterWillBoil pressure temperature
|
|
then
|
|
turnOnAc
|
|
else
|
|
identity
|
|
"#
|
|
));
|
|
|
|
expr_formats_to(
|
|
indoc!(
|
|
r#"
|
|
if
|
|
|
|
|
|
willBoil home water
|
|
|
|
|
|
then
|
|
\_ -> leave
|
|
|
|
else
|
|
identity
|
|
"#
|
|
),
|
|
indoc!(
|
|
r#"
|
|
if
|
|
willBoil home water
|
|
then
|
|
\_ -> leave
|
|
else
|
|
identity
|
|
"#
|
|
),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn if_removes_newlines_from_else() {
|
|
expr_formats_to(
|
|
indoc!(
|
|
r#"
|
|
if
|
|
isPrime 8
|
|
then
|
|
nothing
|
|
else
|
|
# C
|
|
# D
|
|
|
|
# E
|
|
# F
|
|
|
|
just (div 1 8)
|
|
"#
|
|
),
|
|
indoc!(
|
|
r#"
|
|
if
|
|
isPrime 8
|
|
then
|
|
nothing
|
|
else
|
|
# C
|
|
# D
|
|
# E
|
|
# F
|
|
just (div 1 8)
|
|
"#
|
|
),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn if_removes_newlines_from_then() {
|
|
expr_formats_to(
|
|
indoc!(
|
|
r#"
|
|
if
|
|
isPrime 9
|
|
then
|
|
# EE
|
|
# FF
|
|
|
|
nothing
|
|
|
|
# GG
|
|
|
|
else
|
|
just (div 1 9)
|
|
"#
|
|
),
|
|
indoc!(
|
|
r#"
|
|
if
|
|
isPrime 9
|
|
then
|
|
# EE
|
|
# FF
|
|
nothing
|
|
# GG
|
|
else
|
|
just (div 1 9)
|
|
"#
|
|
),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn if_removes_newlines_from_condition() {
|
|
expr_formats_to(
|
|
indoc!(
|
|
r#"
|
|
if
|
|
|
|
# Is
|
|
|
|
# It
|
|
|
|
isPrime 10
|
|
|
|
# Prime?
|
|
|
|
then
|
|
nothing
|
|
else
|
|
just (div 1 10)
|
|
"#
|
|
),
|
|
indoc!(
|
|
r#"
|
|
if
|
|
# Is
|
|
# It
|
|
isPrime 10
|
|
# Prime?
|
|
then
|
|
nothing
|
|
else
|
|
just (div 1 10)
|
|
"#
|
|
),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn multi_line_if() {
|
|
expr_formats_to(
|
|
indoc!(
|
|
r#"
|
|
if lessThan four five then
|
|
four
|
|
|
|
|
|
else
|
|
five
|
|
"#
|
|
),
|
|
indoc!(
|
|
r#"
|
|
if lessThan four five then
|
|
four
|
|
else
|
|
five
|
|
"#
|
|
),
|
|
);
|
|
|
|
expr_formats_to(
|
|
indoc!(
|
|
r#"
|
|
if lessThan three four then
|
|
|
|
|
|
three
|
|
|
|
|
|
|
|
|
|
else
|
|
|
|
|
|
four
|
|
"#
|
|
),
|
|
indoc!(
|
|
r#"
|
|
if lessThan three four then
|
|
three
|
|
else
|
|
four
|
|
"#
|
|
),
|
|
);
|
|
|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
if foo bar then
|
|
a b c
|
|
else
|
|
d e f
|
|
"#
|
|
));
|
|
}
|
|
|
|
// fn multi_line_application() {
|
|
// expr_formats_same(indoc!(
|
|
// r#"
|
|
// combine
|
|
// peanutButter
|
|
// chocolate
|
|
// "#
|
|
// ));
|
|
// }
|
|
|
|
// WHEN
|
|
|
|
#[test]
|
|
fn integer_when() {
|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
when b is
|
|
1 ->
|
|
1
|
|
|
|
_ ->
|
|
2
|
|
"#
|
|
));
|
|
}
|
|
|
|
#[test]
|
|
fn integer_when_with_space() {
|
|
expr_formats_to(
|
|
indoc!(
|
|
r#"
|
|
when year is
|
|
1999 ->
|
|
|
|
|
|
1
|
|
|
|
|
|
|
|
_ ->
|
|
|
|
0
|
|
"#
|
|
),
|
|
indoc!(
|
|
r#"
|
|
when year is
|
|
1999 ->
|
|
1
|
|
|
|
_ ->
|
|
0
|
|
"#
|
|
),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn when_with_comments() {
|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
when b is
|
|
# look at cases
|
|
1 ->
|
|
# when 1
|
|
1
|
|
|
|
# important
|
|
# fall through
|
|
_ ->
|
|
# case 2
|
|
# more comment
|
|
2
|
|
|
|
"#
|
|
));
|
|
}
|
|
|
|
#[test]
|
|
fn nested_when() {
|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
when b is
|
|
_ ->
|
|
when c is
|
|
_ ->
|
|
1
|
|
"#
|
|
));
|
|
}
|
|
|
|
#[test]
|
|
fn when_with_alternatives() {
|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
when b is
|
|
1 | 2 ->
|
|
when c is
|
|
6 | 7 ->
|
|
8
|
|
|
|
3 | 4 ->
|
|
5
|
|
"#
|
|
));
|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
when b is
|
|
# a comment here
|
|
1 | 2 ->
|
|
# a comment there
|
|
1
|
|
"#
|
|
));
|
|
expr_formats_to(
|
|
indoc!(
|
|
r#"
|
|
when b is
|
|
1 | 2 |3
|
|
->
|
|
|
|
1
|
|
"#
|
|
),
|
|
indoc!(
|
|
r#"
|
|
when b is
|
|
1 | 2 | 3
|
|
->
|
|
1
|
|
"#
|
|
),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn when_with_moving_comments() {
|
|
expr_formats_to(
|
|
indoc!(
|
|
r#"
|
|
when b is
|
|
1 ->
|
|
1 # when 1
|
|
|
|
# fall through
|
|
_ ->
|
|
2
|
|
"#
|
|
),
|
|
indoc!(
|
|
r#"
|
|
when b is
|
|
1 ->
|
|
1
|
|
|
|
# when 1
|
|
# fall through
|
|
_ ->
|
|
2
|
|
"#
|
|
),
|
|
);
|
|
}
|
|
|
|
// NEWLINES
|
|
|
|
#[test]
|
|
fn multiple_blank_lines_collapse_to_one() {
|
|
expr_formats_to(
|
|
indoc!(
|
|
r#"
|
|
x = 5
|
|
|
|
|
|
|
|
y = 10
|
|
|
|
|
|
|
|
42
|
|
"#
|
|
),
|
|
indoc!(
|
|
r#"
|
|
x = 5
|
|
|
|
y = 10
|
|
|
|
42
|
|
"#
|
|
),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn def_returning_closure() {
|
|
expr_formats_same(indoc!(
|
|
r#"
|
|
f = \x -> x
|
|
g = \x -> x
|
|
|
|
\x ->
|
|
a = f x
|
|
b = f x
|
|
|
|
x
|
|
"#
|
|
));
|
|
}
|
|
|
|
// MODULES
|
|
|
|
#[test]
|
|
fn single_line_interface() {
|
|
module_formats_same(indoc!(
|
|
r#"
|
|
interface Foo exposes [] imports []
|
|
"#
|
|
));
|
|
}
|
|
|
|
#[test]
|
|
fn multiline_interface() {
|
|
module_formats_same(indoc!(
|
|
r#"
|
|
interface Foo
|
|
exposes []
|
|
imports []
|
|
"#
|
|
));
|
|
}
|
|
|
|
#[test]
|
|
fn interface_exposing() {
|
|
module_formats_same(indoc!(
|
|
r#"
|
|
interface Foo
|
|
exposes [ Bar, Baz, a, b ]
|
|
imports []
|
|
"#
|
|
));
|
|
}
|
|
|
|
#[test]
|
|
fn interface_importing() {
|
|
module_formats_same(indoc!(
|
|
r#"
|
|
interface Foo
|
|
exposes [ Bar, Baz, a, b ]
|
|
imports [ Blah, Thing.{ foo, bar }, Stuff ]
|
|
"#
|
|
));
|
|
}
|
|
}
|