extern/nushell
1
0
Fork 1
mirror of https://github.com/nushell/nushell.git synced 2025-05-19 09:20:45 +02:00
Code Issues Packages Projects Releases Wiki Activity
bb37306d07
nushell/crates/nu-command/tests/commands
History
Firegem bb37306d07
Add lazy closure evaluation to default (#14160) (#15654) 
# Description

This PR adds lazy closure evaluation to the `default` command (closes
#14160).

- For non-closure values and without providing a column name, `default`
acts the same as before
- The user can now provide multiple column names to populate if empty
- If the user provides a column name, the input must be a record or
list, otherwise an error is created.
- The user can now provide a closure as a default value
  - This closure is run without any arguments or input
  - The closure is never evaluated if the value isn't needed
- Even when column names are supplied, the closure is only run once (and
cached to prevent re-calling it)

For example:

```nushell
> default { 1 + 2 } # => 3
> null | default 3 a   # => previously `null`, now errors
> 1 | default { sleep 5sec; 3 } # => `1`, without waiting 5 seconds

> let optional_var = null; $optional_var | default { input 'Enter value: ' } # => Returns user input
> 5 | default { input 'Enter value: ' } # => `5`, without prompting user

> ls | default { sleep 5sec; 'N/A' } name # => No-op since `name` column is never empty
> ls | default { sleep 5sec; 'N/A' } foo bar # => creates columns `foo` and `bar`; only takes 5 seconds since closure result is cached

# Old behavior is the same
> [] | default 'foo' # => []
> [] | default --empty 'foo' # => 'foo'
> default 5 # => 5
```

# User-Facing Changes

- Users can add default values to multiple columns now.
- Users can now use closures as the default value passed to `default`.
- To return a closure, the user must wrap the closure they want to
return inside another closure, which will be run (`default { $my_closure
}`).

# Tests + Formatting

All tests pass.

# After Submitting

---------

Co-authored-by: 132ikl <132@ikl.sh>
2025-05-15 10:10:56 -04:00
..
assignment Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
base Update rand and rand_chacha to 0.9 (#15463) 2025-04-01 07:15:39 -05:00
bytes fix range bugs in str substring, str index-of, slice, bytes at (#14863) 2025-01-30 06:50:01 -06:00
conversions Change behavior of into record on lists to be more useful (#13637) 2024-08-22 11:38:43 +02:00
database Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
date fix format date based on users locale (#11908) 2024-02-20 11:08:49 -06:00
debug Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
hash_ Replace the old encode base64 and decode base64 with new-base64 commands (#14018) 2024-10-08 11:01:43 +08:00
math Bugfix/loss of precision when parsing value with unit (#15606) 2025-04-19 17:02:40 -05:00
move_ Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
network Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
path Refactor I/O Errors (#14927) 2025-01-28 16:03:31 -06:00
platform Add ansi codes to move cursor position (#15221) 2025-03-01 11:30:00 -06:00
query Feature cleanup (#7182) 2022-11-22 16:58:11 -08:00
random feat(random uuid): add support for uuid versions other than 4. (#15239) 2025-03-06 14:21:52 +01:00
skip Add string/binary type color to ByteStream (#12897) 2024-05-20 00:35:32 +00:00
str_ fix ranges over zero-length input (#15062) 2025-02-08 19:57:28 -05:00
take Add string/binary type color to ByteStream (#12897) 2024-05-20 00:35:32 +00:00
url Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
alias.rs allow export alias in repl (#15054) 2025-02-10 15:32:05 +08:00
all.rs Rewrite run_external.rs (#12921) 2024-05-23 02:05:27 +00:00
any.rs Rewrite run_external.rs (#12921) 2024-05-23 02:05:27 +00:00
append.rs fix(nu-command/tests): further remove unnecessary pipeline() and cwd() (#8793) 2023-04-07 14:09:55 -07:00
break_.rs don't allow break/continue in each and items command (#13398) 2024-07-19 00:21:02 -07:00
cal.rs Suppress column index for default cal output (#13188) 2024-06-22 07:41:29 -05:00
cd.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
chunk_by.rs Implement chunk_by operation (#14410) 2024-11-29 13:37:27 -08:00
chunks.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
compact.rs fix compact to handle empty list or record in column (#15213) 2025-03-01 07:47:55 -05:00
complete.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
config_env_default.rs Command: Add config env/nu --default to print defaults (#10480) 2023-09-25 08:00:59 -05:00
config_nu_default.rs Command: Add config env/nu --default to print defaults (#10480) 2023-09-25 08:00:59 -05:00
continue_.rs fix(nu-command/tests): further remove unnecessary pipeline() and cwd() (#8793) 2023-04-07 14:09:55 -07:00
debug_info.rs Make debug info lazy (#10728) 2023-10-24 12:48:05 -05:00
def.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
default.rs Add lazy closure evaluation to default (#14160) (#15654) 2025-05-15 10:10:56 -04:00
detect_columns.rs Improves commands that support range input (#13113) 2024-06-18 07:19:13 -05:00
do_.rs remove -s, -p in do (#15456) 2025-04-01 07:17:05 -05:00
drop.rs Refactor drop columns to fix issues (#10903) 2023-11-09 13:51:46 +01:00
du.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
each.rs Remove group command (#14056) 2024-10-11 06:43:12 -05:00
echo.rs make echo const (#14997) 2025-02-06 06:56:30 -06:00
empty.rs fix(nu-command/tests): further remove unnecessary pipeline() and cwd() (#8793) 2023-04-07 14:09:55 -07:00
error_make.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
every.rs Avoid taking unnecessary ownership of intermediates (#12740) 2024-05-04 00:53:15 +00:00
exec.rs Isolate tests from user config (#12437) 2024-04-10 06:27:46 +08:00
export_def.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
fill.rs Removes unnecessary cwd and pipeline from various tests (#9202) 2023-05-17 18:55:26 -05:00
filter.rs feat: make to nuon raw option remove all white space (#15609) 2025-05-09 09:38:24 +08:00
find.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
first.rs Add string/binary type color to ByteStream (#12897) 2024-05-20 00:35:32 +00:00
flatten.rs Remove file I/O from tests that don't need it (#11182) 2023-11-29 23:21:34 +01:00
for_.rs Change echo to print when not redirected (#10338) 2023-09-13 06:35:01 +12:00
format.rs Improve and fix filesize formatting/display (#14397) 2025-01-22 22:24:51 -08:00
generate.rs Add input support to generate (#14804) 2025-01-14 11:44:31 -06:00
get.rs Make get const (#14751) 2025-01-04 16:41:03 -05:00
glob.rs Add --follow-symlinks flag to glob command (fixes #15559) (#15626) 2025-04-23 10:47:48 -05:00
griddle.rs make grid throw an error when not enough columns (#12672) 2024-04-26 06:33:00 -05:00
group_by.rs Add run-time type checking for command pipeline input (#14741) 2025-01-08 23:09:47 +01:00
headers.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
help.rs Change the usage misnomer to "description" (#13598) 2024-08-22 12:02:08 +02:00
histogram.rs Remove file I/O from tests that don't need it (#11182) 2023-11-29 23:21:34 +01:00
ignore.rs Change the ignore command to use drain() instead of collecting a value (#12120) 2024-03-08 02:18:26 -05:00
insert.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
inspect.rs fix inspect and explore panics on empty records (#13893) 2024-09-25 07:48:16 -05:00
interleave.rs Isolate tests from user config (#12437) 2024-04-10 06:27:46 +08:00
into_datetime.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
into_duration.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
into_filesize.rs Bump bytesize to fix into filesize (#15088) 2025-02-11 11:33:48 +01:00
into_int.rs add --signed flag for binary into int conversions (#11902) 2024-02-27 15:05:26 +00:00
job.rs Inter-Job direct messaging (#15253) 2025-04-26 23:24:35 +08:00
join.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
last.rs Add string/binary type color to ByteStream (#12897) 2024-05-20 00:35:32 +00:00
length.rs support binary input in length (#14224) 2024-11-04 03:39:24 +00:00
let_.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
lines.rs fix panic with lines on an error (#9967) 2023-08-09 14:12:58 +02:00
loop_.rs Change echo to print when not redirected (#10338) 2023-09-13 06:35:01 +12:00
ls.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
match_.rs prevent panic when parsing incomplete multi-expr (|) matches (#15230) 2025-03-04 05:34:34 -06:00
merge_deep.rs Add merge deep command (#14525) 2024-12-18 06:36:04 -06:00
merge.rs Remove file I/O from tests that don't need it (#11182) 2023-11-29 23:21:34 +01:00
mktemp.rs Path migration part 4: various tests (#13373) 2024-08-03 10:09:13 +02:00
mod.rs Bugfix/loss of precision when parsing value with unit (#15606) 2025-04-19 17:02:40 -05:00
mut_.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
nu_check.rs More precise ErrorKind::NotFound errors (#15149) 2025-02-22 11:42:44 -05:00
open.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
par_each.rs Fix: remove unnecessary r#"..."# (#8670) (#9764) 2023-07-21 17:32:37 +02:00
parse.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
prepend.rs Avoid taking unnecessary ownership of intermediates (#12740) 2024-05-04 00:53:15 +00:00
print.rs Add --raw switch to print for binary data (#13597) 2024-08-12 17:29:25 +08:00
redirection.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
reduce.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
reject.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
rename.rs Remove file I/O from tests that don't need it (#11182) 2023-11-29 23:21:34 +01:00
return_.rs Fix return setting last exit code (#14120) 2024-10-18 03:05:58 +00:00
reverse.rs Clean up tests containing unnecessary cwd: tokens (#9692) 2023-07-17 18:43:51 +02:00
rm.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
roll.rs Fix: remove unnecessary r#"..."# (#8670) (#9764) 2023-07-21 17:32:37 +02:00
rotate.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
run_external.rs Remove required positional arguments from run-external and exec (#14765) 2025-01-16 06:10:28 +08:00
save.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
select.rs fix: inefficient select with large row number (#15730) 2025-05-10 11:28:18 +03:00
semicolon.rs Slim down tests (#9021) 2023-04-28 13:25:44 +02:00
seq_char.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
seq_date.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
seq.rs Slim down tests (#9021) 2023-04-28 13:25:44 +02:00
slice.rs fix range bugs in str substring, str index-of, slice, bytes at (#14863) 2025-01-30 06:50:01 -06:00
sort_by.rs to json -r not removing whitespaces fix (#11948) 2024-03-20 22:14:31 +01:00
sort.rs Rework sorting and add cell path and closure comparators to sort-by (#13154) 2024-10-09 19:18:16 -07:00
source_env.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
split_column.rs Add --number flag to split column (#13831) 2024-09-12 07:16:33 -05:00
split_row.rs Avoid taking unnecessary ownership of intermediates (#12740) 2024-05-04 00:53:15 +00:00
start.rs check signals while printing values (#14980) 2025-02-07 06:56:07 -05:00
stor.rs Fix improperly escaped strings in stor update (#14921) 2025-01-26 07:20:39 -06:00
table.rs fix: empty tables now respect $env.config.use_ansi_coloring (closes #14896) (#15751) 2025-05-14 06:40:15 -05:00
tee.rs Make tee work more nicely with non-collections (#13652) 2024-09-01 19:03:46 +02:00
terminal.rs Add is-terminal to determine if stdin/out/err are a terminal (#10970) 2023-11-21 20:48:39 -06:00
to_text.rs Make to text line endings consistent for list (streams) (#14166) 2024-11-05 09:33:54 +01:00
transpose.rs Transpose now rejects streams with non-record values (#15151) 2025-02-20 23:34:26 -05:00
try_.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
ucp.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
ulimit.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
umkdir.rs [umkdir][tests] get umask instead of assuming it (#14046) 2024-10-11 14:13:42 +02:00
uname.rs Initial implementation for uutils uname (#11684) 2024-03-25 16:51:50 -05:00
uniq_by.rs Remove file I/O from tests that don't need it (#11182) 2023-11-29 23:21:34 +01:00
uniq.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
update.rs Remove lazy records (#12682) 2024-05-03 08:36:10 +08:00
upsert.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
use_.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
utouch.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
where_.rs feat(where): Support stored closure (#15697) 2025-05-13 22:24:45 +03:00
which.rs change the output of which to be more explicit (#9646) 2023-07-20 19:10:53 -05:00
while_.rs Change echo to print when not redirected (#10338) 2023-09-13 06:35:01 +12:00
window.rs Rust 1.85, edition=2024 (#15741) 2025-05-13 16:49:30 +02:00
with_env.rs Improve with-env robustness (#12523) 2024-04-16 19:08:58 +08:00
wrap.rs Remove file I/O from tests that don't need it (#11182) 2023-11-29 23:21:34 +01:00
zip.rs Avoid taking unnecessary ownership of intermediates (#12740) 2024-05-04 00:53:15 +00:00