nushell/crates/nu-std/tests/logger_tests/test_log_custom.nu
Bahex 442df9e39c
Custom command attributes (#14906)
# Description
Add custom command attributes.

- Attributes are placed before a command definition and start with a `@`
character.
- Attribute invocations consist of const command call. The command's
name must start with "attr ", but this prefix is not used in the
invocation.
- A command named `attr example` is invoked as an attribute as
`@example`
-   Several built-in attribute commands are provided as part of this PR
    -   `attr example`: Attaches an example to the commands help text
        ```nushell
        # Double numbers
        @example "double an int"  { 5 | double }   --result 10
        @example "double a float" { 0.5 | double } --result 1.0
        def double []: [number -> number] {
            $in * 2
        }
        ```
    -   `attr search-terms`: Adds search terms to a command
    -   ~`attr env`: Equivalent to using `def --env`~
- ~`attr wrapped`: Equivalent to using `def --wrapped`~ shelved for
later discussion
    -   several testing related attributes in `std/testing`
- If an attribute has no internal/special purpose, it's stored as
command metadata that can be obtained with `scope commands`.
- This allows having attributes like `@test` which can be used by test
runners.
-   Used the `@example` attribute for `std` examples.
-   Updated the std tests and test runner to use `@test` attributes
-   Added completions for attributes

# User-Facing Changes
Users can add examples to their own command definitions, and add other
arbitrary attributes.

# Tests + Formatting

- 🟢 toolkit fmt
- 🟢 toolkit clippy
- 🟢 toolkit test
- 🟢 toolkit test stdlib

# After Submitting
- Add documentation about the attribute syntax and built-in attributes
- `help attributes`

---------

Co-authored-by: 132ikl <132@ikl.sh>
2025-02-11 06:34:51 -06:00

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use std/testing *
use std/assert
use commons.nu *
def run-command [
system_level: string,
message: string,
format: string,
log_level: int,
--level-prefix: string,
--ansi: string
] {
if ($level_prefix | is-empty) {
if ($ansi | is-empty) {
^$nu.current-exe --no-config-file --commands $'use std/log; NU_LOG_LEVEL=($system_level) log custom "($message)" "($format)" ($log_level)'
} else {
^$nu.current-exe --no-config-file --commands $'use std/log; NU_LOG_LEVEL=($system_level) log custom "($message)" "($format)" ($log_level) --ansi "($ansi)"'
}
} else {
^$nu.current-exe --no-config-file --commands $'use std/log; NU_LOG_LEVEL=($system_level) log custom "($message)" "($format)" ($log_level) --level-prefix "($level_prefix)" --ansi "($ansi)"'
}
| complete | get --ignore-errors stderr
}
@test
def errors_during_deduction [] {
assert str contains (run-command "DEBUG" "msg" "%MSG%" 25) "Cannot deduce log level prefix for given log level"
assert str contains (run-command "DEBUG" "msg" "%MSG%" 25 --ansi (ansi red)) "Cannot deduce log level prefix for given log level"
assert str contains (run-command "DEBUG" "msg" "%MSG%" 25 --level-prefix "abc") "Cannot deduce ansi for given log level"
}
@test
def valid_calls [] {
use std/log *
assert equal (run-command "DEBUG" "msg" "%MSG%" 25 --level-prefix "abc" --ansi (ansi default) | str trim --right) "msg"
assert equal (run-command "DEBUG" "msg" "%LEVEL% %MSG%" 20 | str trim --right) $"((log-prefix).INFO) msg"
assert equal (run-command "DEBUG" "msg" "%LEVEL% %MSG%" --level-prefix "abc" 20 | str trim --right) "abc msg"
assert equal (run-command "INFO" "msg" "%ANSI_START%%LEVEL% %MSG%%ANSI_STOP%" ((log-level).CRITICAL) | str trim --right) $"((log-ansi).CRITICAL)CRT msg(ansi reset)"
}
@test
def log-level_handling [] {
use std/log *
assert equal (run-command "DEBUG" "msg" "%LEVEL% %MSG%" 20 | str trim --right) $"((log-prefix).INFO) msg"
assert equal (run-command "WARNING" "msg" "%LEVEL% %MSG%" 20 | str trim --right) ""
}