nushell/crates/nu-command/tests/format_conversions/html.rs
Bob Hyman 9e9fe83bfd
Parameter defaults to $nu.scope.commands (#9152)
(*third* try at posting this PR, #9104, like #9084, got polluted with
unrelated commits. I'm never going to pull from the github feature
branch again!)

# Description
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Show parameter defaults in scope command signature, where they're
available for display by help.
per https://github.com/nushell/nushell/issues/8928.

I found unexpected ramifications in one completer (NuHelpCompleter) and
plugins, which both use the flag-formatting routine from builtin help.
For the moment I made the minimum necessary changes to get the mainline
scenario to pass tests and run. But we should circle back on what to do
with plugins and help completer..

# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
1. New `parameter_default` column to `signatures` table in
`$nu.scope.commands`
It is populated with whatever parameters can be defaulted: currently
positional args and named flags.
2. Built in help (both `help <command>` and `<command> --help` will
display the defaults
3. Help completer will display defaults for flags, but not for
positionals.

Example:
A custom command with some default parameters:
```
〉cat ~/work/dflts.nu 
# sample function to show defaults in help
export def main [
    arg1: string        # mandatory positional
    arg2:string=abc     # optional positional
    --switch            # no default here
    --named:int         # named flag, no default
    --other:string=def  # flag 
    --hard:record<foo:int bar:string, bas:bool> # default can be compound type
            = {foo:22, bar:"other worlds", bas:false}
] { {arg1: $arg1,
    arg2: $arg2,
    switch: $switch,
    named: $named,
    other: $other,
    hard: $hard, }
}

〉use ~/work/dflts.nu

〉$nu.scope.commands | where name == 'dflts' | get signatures.0.any | reject short_flag description custom_completion
╭───┬────────────────┬────────────────┬──────────────────────────────────────────┬─────────────┬───────────────────────────╮
│ # │ parameter_name │ parameter_type │               syntax_shape               │ is_optional │     parameter_default     │
├───┼────────────────┼────────────────┼──────────────────────────────────────────┼─────────────┼───────────────────────────┤
│ 0 │                │ input          │ any                                      │ false       │                           │
│ 1 │ arg1           │ positional     │ string                                   │ false       │                           │
│ 2 │ arg2           │ positional     │ string                                   │ true        │ abc                       │
│ 3 │ switch         │ switch         │                                          │ true        │                           │
│ 4 │ named          │ named          │ int                                      │ true        │                           │
│ 5 │ other          │ named          │ string                                   │ true        │ def                       │
│ 6 │ hard           │ named          │ record<foo: int, bar: string, bas: bool> │ true        │ ╭───────┬───────────────╮ │
│   │                │                │                                          │             │ │ foo   │ 22            │ │
│   │                │                │                                          │             │ │ bar   │ other worlds  │ │
│   │                │                │                                          │             │ │ bas   │ false         │ │
│   │                │                │                                          │             │ ╰───────┴───────────────╯ │
│ 7 │                │ output         │ any                                      │ false       │                           │
╰───┴────────────────┴────────────────┴──────────────────────────────────────────┴─────────────┴───────────────────────────╯

〉help dflts
sample function to show defaults in help

Usage:
  > dflts {flags} <arg1> (arg2) 

Flags:
  --switch - switch -- no default here
  --named <Int> - named flag, typed, but no default
  --other <String> - flag with default (default: 'def')
  --hard <Record([("foo", Int), ("bar", String), ("bas", Boolean)])> - default can be compound type (default: {foo: 22, bar: 'other worlds', bas: false})
  -h, --help - Display the help message for this command

Parameters:
  arg1 <string>: mandatory positional
  arg2 <string>: optional positional (optional, default: 'abc')
```

Compared to (relevant bits of) help output previously:
```
Flags:
  -h, --help - Display the help message for this command
  -, --switch - no default here
  -, --named <int> - named flag, no default
  -, --other <string> - flag
  -, --hard <record<foo: int, bar: string, bas: bool>> - default can be compound type

Signatures:
  <any> | dflts <string> <string> -> <any>

Parameters:
  arg1 <string>: mandatory positional
  (optional) arg2 <string>: optional positional
```

# Tests + Formatting
<!--
Don't forget to add tests that cover your changes.

Make sure you've run and fixed any issues with these commands:

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clippy::needless_collect -A clippy::result_large_err` to check that
you're using the standard code style
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standard library

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> ```
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# After Submitting
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2023-05-11 13:59:56 -05:00

90 lines
4.7 KiB
Rust

use nu_test_support::{nu, pipeline};
#[test]
fn out_html_simple() {
let actual = nu!(
cwd: ".", pipeline(
r#"
echo 3 | to html
"#
));
assert_eq!(
actual.out,
r"<html><style>body { background-color:white;color:black; }</style><body>3</body></html>"
);
}
#[test]
fn out_html_partial() {
let actual = nu!(
cwd: ".", pipeline(
r#"
echo 3 | to html -p
"#
));
assert_eq!(
actual.out,
"<div style=\"background-color:white;color:black;\">3</div>"
);
}
#[test]
fn out_html_table() {
let actual = nu!(
cwd: ".", pipeline(
r#"
echo '{"name": "darren"}' | from json | to html
"#
));
assert_eq!(
actual.out,
r"<html><style>body { background-color:white;color:black; }</style><body><table><thead><tr><th>name</th></tr></thead><tbody><tr><td>darren</td></tr></tbody></table></body></html>"
);
}
#[test]
#[ignore]
fn test_cd_html_color_flag_dark_false() {
let actual = nu!(
cwd: ".", pipeline(
r#"
cd --help | to html --html-color
"#
)
);
assert_eq!(
actual.out,
r"<html><style>body { background-color:white;color:black; }</style><body>Change directory.<br><br><span style='color:green;'>Usage<span style='color:black;font-weight:normal;'>:<br> &gt; cd (path) <br><br></span></span><span style='color:green;'>Flags<span style='color:black;font-weight:normal;'>:<br> </span></span><span style='color:#037979;'>-h</span>,<span style='color:black;font-weight:normal;'> </span><span style='color:#037979;'>--help<span style='color:black;font-weight:normal;'> - Display the help message for this command<br><br></span><span style='color:green;'>Signatures<span style='color:black;font-weight:normal;'>:<br> &lt;nothing&gt; | cd &lt;string?&gt; -&gt; &lt;nothing&gt;<br> &lt;string&gt; | cd &lt;string?&gt; -&gt; &lt;nothing&gt;<br><br></span></span><span style='color:green;'>Parameters<span style='color:black;font-weight:normal;'>:<br> (optional) </span></span></span><span style='color:#037979;'>path<span style='color:black;font-weight:normal;'> &lt;</span><span style='color:blue;font-weight:bold;'>directory<span style='color:black;font-weight:normal;'>&gt;: the path to change to<br><br></span></span><span style='color:green;'>Examples<span style='color:black;font-weight:normal;'>:<br> Change to your home directory<br> &gt; </span><span style='color:#037979;font-weight:bold;'>cd<span style='color:black;font-weight:normal;'> </span></span></span></span><span style='color:#037979;'>~<span style='color:black;font-weight:normal;'><br><br> Change to a directory via abbreviations<br> &gt; </span><span style='color:#037979;font-weight:bold;'>cd<span style='color:black;font-weight:normal;'> </span></span></span><span style='color:#037979;'>d/s/9<span style='color:black;font-weight:normal;'><br><br> Change to the previous working directory ($OLDPWD)<br> &gt; </span><span style='color:#037979;font-weight:bold;'>cd<span style='color:black;font-weight:normal;'> </span></span></span><span style='color:#037979;'>-<span style='color:black;font-weight:normal;'><br><br></body></html></span></span>"
);
}
#[test]
fn test_no_color_flag() {
let actual = nu!(
cwd: ".", pipeline(
r#"
cd --help | to html --no-color
"#
)
);
assert_eq!(
actual.out,
r"<html><style>body { background-color:white;color:black; }</style><body>Change directory.<br><br>Usage:<br> &gt; cd (path) <br><br>Flags:<br> -h, --help - Display the help message for this command<br><br>Signatures:<br> &lt;nothing&gt; | cd &lt;string?&gt; -&gt; &lt;nothing&gt;<br> &lt;string&gt; | cd &lt;string?&gt; -&gt; &lt;nothing&gt;<br><br>Parameters:<br> path &lt;directory&gt;: the path to change to (optional)<br><br>Examples:<br> Change to your home directory<br> &gt; cd ~<br><br> Change to a directory via abbreviations<br> &gt; cd d/s/9<br><br> Change to the previous working directory ($OLDPWD)<br> &gt; cd -<br><br></body></html>"
)
}
#[test]
fn test_list() {
let actual = nu!(
cwd: ".",
r#"to html --list | where name == C64 | get 0 | to nuon"#
);
assert_eq!(
actual.out,
r##"{name: "C64", black: "#090300", red: "#883932", green: "#55a049", yellow: "#bfce72", blue: "#40318d", purple: "#8b3f96", cyan: "#67b6bd", white: "#ffffff", brightBlack: "#000000", brightRed: "#883932", brightGreen: "#55a049", brightYellow: "#bfce72", brightBlue: "#40318d", brightPurple: "#8b3f96", brightCyan: "#67b6bd", brightWhite: "#f7f7f7", background: "#40318d", foreground: "#7869c4"}"##
);
}