Mirrors/nushell
2
0
Fork 0
mirror of https://github.com/nushell/nushell synced 2024-11-14 00:47:09 +00:00
Code Issues Projects Releases Packages Wiki Activity
nushell/tests/const_/mod.rs
Devyn Cairns 8e2917b9ae
Make assignment and const consistent with let/mut (#13385) 
# Description

This makes assignment operations and `const` behave the same way `let`
and `mut` do, absorbing the rest of the pipeline.

Changes the lexer to be able to recognize assignment operators as a
separate token, and then makes the lite parser continue to push spans
into the same command regardless of any redirections or pipes if an
assignment operator is encountered. Because the pipeline is no longer
split up by the lite parser at this point, it's trivial to just parse
the right hand side as if it were a subexpression not contained within
parentheses.

# User-Facing Changes
Big breaking change. These are all now possible:

```nushell
const path = 'a' | path join 'b'

mut x = 2
$x = random int
$x = [1 2 3] | math sum

$env.FOO = random chars
```

In the past, these would have led to (an attempt at) bare word string
parsing. So while `$env.FOO = bar` would have previously set the
environment variable `FOO` to the string `"bar"`, it now tries to run
the command named `bar`, hence the major breaking change.

However, this is desirable because it is very consistent - if you see
the `=`, you can just assume it absorbs everything else to the right of
it.

# Tests + Formatting
Added tests for the new behaviour. Adjusted some existing tests that
depended on the right hand side of assignments being parsed as
barewords.

# After Submitting
- [ ] release notes (breaking change!)
2024-07-30 18:55:22 -05:00

423 lines
11 KiB
Rust
Raw Blame History

use nu_test_support::nu;
use pretty_assertions::assert_eq;
use rstest::rstest;
const MODULE_SETUP: &str = r#"
module spam {
export const X = 'x'
export module eggs {
export const E = 'e'
export module bacon {
export const viking = 'eats'
export module none {}
}
}
}
"#;
#[test]
fn const_bool() {
let inp = &["const x = false", "$x"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "false");
}
#[test]
fn const_int() {
let inp = &["const x = 10", "$x"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "10");
}
#[test]
fn const_float() {
let inp = &["const x = 1.234", "$x"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "1.234");
}
#[test]
fn const_binary() {
let inp = &["const x = 0x[12]", "$x"];
let actual = nu!(&inp.join("; "));
assert!(actual.out.contains("12"));
}
#[test]
fn const_datetime() {
let inp = &["const x = 2021-02-27T13:55:40+00:00", "$x"];
let actual = nu!(&inp.join("; "));
assert!(actual.out.contains("Sat, 27 Feb 2021 13:55:40"));
}
#[test]
fn const_list() {
let inp = &["const x = [ a b c ]", "$x | describe"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "list<string>");
}
#[test]
fn const_record() {
let inp = &["const x = { a: 10, b: 20, c: 30 }", "$x | describe"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "record<a: int, b: int, c: int>");
}
#[test]
fn const_table() {
let inp = &[
"const x = [[a b c]; [10 20 30] [100 200 300]]",
"$x | describe",
];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "table<a: int, b: int, c: int>");
}
#[test]
fn const_invalid_table() {
let inp = &["const x = [[a b a]; [10 20 30] [100 200 300]]"];
let actual = nu!(&inp.join("; "));
assert!(actual.err.contains("column_defined_twice"));
}
#[test]
fn const_string() {
let inp = &[r#"const x = "abc""#, "$x"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "abc");
}
#[test]
fn const_string_interpolation_var() {
let actual = nu!(r#"const x = 2; const s = $"($x)"; $s"#);
assert_eq!(actual.out, "2");
}
#[test]
fn const_string_interpolation_date() {
let actual = nu!(r#"const s = $"(2021-02-27T13:55:40+00:00)"; $s"#);
assert!(actual.out.contains("Sat, 27 Feb 2021 13:55:40 +0000"));
}
#[test]
fn const_string_interpolation_filesize() {
let actual = nu!(r#"const s = $"(2kb)"; $s"#);
assert_eq!(actual.out, "2.0 KiB");
}
#[test]
fn const_nothing() {
let inp = &["const x = null", "$x | describe"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "nothing");
}
#[rstest]
#[case(&["const x = not false", "$x"], "true")]
#[case(&["const x = false", "const y = not $x", "$y"], "true")]
#[case(&["const x = not false", "const y = not $x", "$y"], "false")]
fn const_unary_operator(#[case] inp: &[&str], #[case] expect: &str) {
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, expect);
}
#[rstest]
#[case(&["const x = 1 + 2", "$x"], "3")]
#[case(&["const x = 1 * 2", "$x"], "2")]
#[case(&["const x = 4 / 2", "$x"], "2")]
#[case(&["const x = 4 mod 3", "$x"], "1")]
#[case(&["const x = 5.0 / 2.0", "$x"], "2.5")]
#[case(&[r#"const x = "a" + "b" "#, "$x"], "ab")]
#[case(&[r#"const x = "a" ++ "b" "#, "$x"], "ab")]
#[case(&[r#"const x = [1,2] ++ [3]"#, "$x | describe"], "list<int>")]
#[case(&[r#"const x = 0x[1,2] ++ 0x[3]"#, "$x | describe"], "binary")]
#[case(&[r#"const x = 0x[1,2] ++ [3]"#, "$x | describe"], "list<any>")]
#[case(&["const x = 1 < 2", "$x"], "true")]
#[case(&["const x = (3 * 200) > (2 * 100)", "$x"], "true")]
#[case(&["const x = (3 * 200) < (2 * 100)", "$x"], "false")]
#[case(&["const x = (3 * 200) == (2 * 300)", "$x"], "true")]
fn const_binary_operator(#[case] inp: &[&str], #[case] expect: &str) {
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, expect);
}
#[rstest]
#[case(&["const x = 1 / 0", "$x"], "division by zero")]
#[case(&["const x = 10 ** 10000000", "$x"], "pow operation overflowed")]
#[case(&["const x = 2 ** 62 * 2", "$x"], "multiply operation overflowed")]
#[case(&["const x = 1 ++ 0", "$x"], "doesn't support this value")]
fn const_operator_error(#[case] inp: &[&str], #[case] expect: &str) {
let actual = nu!(&inp.join("; "));
assert!(actual.err.contains(expect));
}
#[rstest]
#[case(&["const x = (1..3)", "$x | math sum"], "6")]
#[case(&["const x = (1..3)", "$x | describe"], "range")]
fn const_range(#[case] inp: &[&str], #[case] expect: &str) {
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, expect);
}
#[test]
fn const_subexpression_supported() {
let inp = &["const x = ('spam')", "$x"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "spam");
}
#[test]
fn const_command_supported() {
let inp = &["const x = ('spam' | str length)", "$x"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "4");
}
#[test]
fn const_command_unsupported() {
let inp = &["const x = (loop { break })"];
let actual = nu!(&inp.join("; "));
assert!(actual.err.contains("not_a_const_command"));
}
#[test]
fn const_in_scope() {
let inp = &["do { const x = 'x'; $x }"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "x");
}
#[test]
fn not_a_const_help() {
let actual = nu!("const x = ('abc' | str length -h)");
assert!(actual.err.contains("not_a_const_help"));
}
#[test]
fn complex_const_export() {
let inp = &[MODULE_SETUP, "use spam", "$spam.X"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "x");
let inp = &[MODULE_SETUP, "use spam", "$spam.eggs.E"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "e");
let inp = &[MODULE_SETUP, "use spam", "$spam.eggs.bacon.viking"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "eats");
let inp = &[
MODULE_SETUP,
"use spam",
"($spam.eggs.bacon.none | is-empty)",
];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "true");
}
#[test]
fn complex_const_glob_export() {
let inp = &[MODULE_SETUP, "use spam *", "$X"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "x");
let inp = &[MODULE_SETUP, "use spam *", "$eggs.E"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "e");
let inp = &[MODULE_SETUP, "use spam *", "$eggs.bacon.viking"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "eats");
let inp = &[MODULE_SETUP, "use spam *", "($eggs.bacon.none | is-empty)"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "true");
}
#[test]
fn complex_const_drill_export() {
let inp = &[
MODULE_SETUP,
"use spam eggs bacon none",
"($none | is-empty)",
];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "true");
}
#[test]
fn complex_const_list_export() {
let inp = &[
MODULE_SETUP,
"use spam [X eggs]",
"[$X $eggs.E] | str join ''",
];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "xe");
}
#[test]
fn exported_const_is_const() {
let module1 = "module foo {
export def main [] { 'foo' }
}";
let module2 = "module spam {
export const MOD_NAME = 'foo'
}";
let inp = &[module1, module2, "use spam", "use $spam.MOD_NAME", "foo"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "foo");
}
#[test]
fn const_captures_work() {
let module = "module spam {
export const X = 'x'
const Y = 'y'
export-env { $env.SPAM = $X + $Y }
export def main [] { $X + $Y }
}";
let inp = &[module, "use spam", "$env.SPAM"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "xy");
let inp = &[module, "use spam", "spam"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "xy");
}
#[test]
fn const_captures_in_closures_work() {
let module = "module foo {
const a = 'world'
export def bar [] {
'hello ' + $a
}
}";
let inp = &[module, "use foo", "do { foo bar }"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "hello world");
}
#[ignore = "TODO: Need to fix `overlay hide` to hide the constants brought by `overlay use`"]
#[test]
fn complex_const_overlay_use_hide() {
let inp = &[MODULE_SETUP, "overlay use spam", "$X"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "x");
let inp = &[MODULE_SETUP, "overlay use spam", "$eggs.E"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "e");
let inp = &[MODULE_SETUP, "overlay use spam", "$eggs.bacon.viking"];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "eats");
let inp = &[
MODULE_SETUP,
"overlay use spam",
"($eggs.bacon.none | is-empty)",
];
let actual = nu!(&inp.join("; "));
assert_eq!(actual.out, "true");
let inp = &[MODULE_SETUP, "overlay use spam", "overlay hide", "$eggs"];
let actual = nu!(&inp.join("; "));
assert!(actual.err.contains("nu::parser::variable_not_found"));
}
// const implementations of commands without dedicated tests
#[test]
fn describe_const() {
let actual = nu!("const x = ('abc' | describe); $x");
assert_eq!(actual.out, "string");
}
#[test]
fn ignore_const() {
let actual = nu!(r#"const x = ("spam" | ignore); $x == null"#);
assert_eq!(actual.out, "true");
}
#[test]
fn version_const() {
let actual = nu!("const x = (version); $x");
assert!(actual.err.is_empty());
}
#[test]
fn if_const() {
let actual = nu!("const x = (if 2 < 3 { 'yes!' }); $x");
assert_eq!(actual.out, "yes!");
let actual = nu!("const x = (if 5 < 3 { 'yes!' } else { 'no!' }); $x");
assert_eq!(actual.out, "no!");
let actual =
nu!("const x = (if 5 < 3 { 'yes!' } else if 4 < 5 { 'no!' } else { 'okay!' }); $x");
assert_eq!(actual.out, "no!");
}
#[test]
fn const_glob_type() {
let actual = nu!("const x: glob = 'aa'; $x | describe");
assert_eq!(actual.out, "glob");
}
#[test]
fn const_raw_string() {
let actual = nu!(r#"const x = r#'abcde""fghi"''''jkl'#; $x"#);
assert_eq!(actual.out, r#"abcde""fghi"''''jkl"#);
let actual = nu!(r#"const x = r##'abcde""fghi"''''#jkl'##; $x"#);
assert_eq!(actual.out, r#"abcde""fghi"''''#jkl"#);
let actual = nu!(r#"const x = r###'abcde""fghi"'''##'#jkl'###; $x"#);
assert_eq!(actual.out, r#"abcde""fghi"'''##'#jkl"#);
let actual = nu!(r#"const x = r#'abc'#; $x"#);
assert_eq!(actual.out, "abc");
}
#[test]
fn const_takes_pipeline() {
let actual = nu!(r#"const list = 'bar_baz_quux' | split row '_'; $list | length"#);
assert_eq!(actual.out, "3");
}
Reference in a new issue View git blame Copy permalink