Function validate_non_empty_string 

pub fn validate_non_empty_string(value: &str, field_name: &str) -> Result<()>

Validate string is not empty or whitespace

Examples

assert!(validate_non_empty_string("test", "field").is_ok());
assert!(validate_non_empty_string("", "field").is_err());
assert!(validate_non_empty_string("   ", "field").is_err());