Function validate_template 

pub fn validate_template<T: Serialize>(
    template: &str,
    data: &T,
    theme: &Theme,
) -> Result<(), Box<dyn Error>>

Validates a template for unknown style tags.

This function renders the template (performing variable substitution) and then checks for any style tags that are not defined in the theme. Use this during development or CI to catch typos in templates.

Arguments

• template - A minijinja template string
• data - Any serializable data to pass to the template
• theme - Theme definitions that define valid style names

Returns

Returns Ok(()) if all style tags in the template are defined in the theme. Returns Err with the list of unknown tags if any are found.

Example

use standout_render::{validate_template, Theme};
use console::Style;
use serde::Serialize;

#[derive(Serialize)]
struct Data { name: String }

let theme = Theme::new().add("title", Style::new().bold());

// Valid template passes
let result = validate_template(
    "[title]{{ name }}[/title]",
    &Data { name: "Hello".into() },
    &theme,
);
assert!(result.is_ok());

// Unknown tag fails validation
let result = validate_template(
    "[unknown]{{ name }}[/unknown]",
    &Data { name: "Hello".into() },
    &theme,
);
assert!(result.is_err());