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|
/// Functions for types that can be turned into strings.
///
/// Example:
/// ```rust
/// use icann_rdap_common::check::*;
///
/// let s = " ";
/// assert!(s.is_whitespace_or_empty());
/// ```
pub trait StringCheck {
/// Tests if the string is empty, including for if the string only has whitespace.
fn is_whitespace_or_empty(&self) -> bool;
/// Tests if the string contains only letters, digits, or hyphens and is not empty.
fn is_ldh_string(&self) -> bool;
/// Tests if a string is an LDH doamin name. This is not to be confused with [StringCheck::is_ldh_string],
/// which checks individual domain labels.
fn is_ldh_domain_name(&self) -> bool;
/// Tests if a string is a Unicode domain name.
fn is_unicode_domain_name(&self) -> bool;
/// Tests if a string is begins with a period and only has one label.
fn is_tld(&self) -> bool;
}
impl<T: ToString> StringCheck for T {
fn is_whitespace_or_empty(&self) -> bool {
let s = self.to_string();
s.is_empty() || s.chars().all(char::is_whitespace)
}
fn is_ldh_string(&self) -> bool {
let s = self.to_string();
!s.is_empty() && s.chars().all(char::is_ldh)
}
fn is_ldh_domain_name(&self) -> bool {
let s = self.to_string();
s == "." || (!s.is_empty() && s.split_terminator('.').all(|s| s.is_ldh_string()))
}
fn is_unicode_domain_name(&self) -> bool {
let s = self.to_string();
s == "."
|| (!s.is_empty()
&& s.split_terminator('.').all(|s| {
s.chars()
.all(|c| c == '-' || (!c.is_ascii_punctuation() && !c.is_whitespace()))
}))
}
fn is_tld(&self) -> bool {
let s = self.to_string();
s.starts_with('.')
&& s.len() > 2
&& s.matches('.').count() == 1
&& s.split_terminator('.').all(|s| {
s.chars()
.all(|c| !c.is_ascii_punctuation() && !c.is_whitespace())
})
}
}
/// Functions for types that can be turned into arrays of strings.
///
/// Example:
/// ```rust
/// use icann_rdap_common::check::*;
///
/// let a: &[&str] = &["foo",""];
/// assert!(a.is_empty_or_any_empty_or_whitespace());
/// ```
pub trait StringListCheck {
/// Tests if a list of strings is empty, or if any of the
/// elemeents of the list are empty or whitespace.
fn is_empty_or_any_empty_or_whitespace(&self) -> bool;
/// Tests if a list of strings ard LDH strings. See [CharCheck::is_ldh].
fn is_ldh_string_list(&self) -> bool;
}
impl<T: ToString> StringListCheck for &[T] {
fn is_empty_or_any_empty_or_whitespace(&self) -> bool {
self.is_empty() || self.iter().any(|s| s.to_string().is_whitespace_or_empty())
}
fn is_ldh_string_list(&self) -> bool {
!self.is_empty() && self.iter().all(|s| s.to_string().is_ldh_string())
}
}
impl<T: ToString> StringListCheck for Vec<T> {
fn is_empty_or_any_empty_or_whitespace(&self) -> bool {
self.is_empty() || self.iter().any(|s| s.to_string().is_whitespace_or_empty())
}
fn is_ldh_string_list(&self) -> bool {
!self.is_empty() && self.iter().all(|s| s.to_string().is_ldh_string())
}
}
/// Functions for chars.
///
/// Example:
/// ```rust
/// use icann_rdap_common::check::*;
///
/// let c = 'a';
/// assert!(c.is_ldh());
/// ```
pub trait CharCheck {
/// Checks if the character is a letter, digit or a hyphen
#[allow(clippy::wrong_self_convention)]
fn is_ldh(self) -> bool;
}
impl CharCheck for char {
fn is_ldh(self) -> bool {
matches!(self, 'A'..='Z' | 'a'..='z' | '0'..='9' | '-')
}
}
#[cfg(test)]
#[allow(non_snake_case)]
mod tests {
use rstest::rstest;
use crate::check::string::{CharCheck, StringListCheck};
use super::StringCheck;
#[rstest]
#[case("foo", false)]
#[case("", true)]
#[case(" ", true)]
#[case("foo bar", false)]
fn GIVEN_string_WHEN_is_whitespace_or_empty_THEN_correct_result(
#[case] test_string: &str,
#[case] expected: bool,
) {
// GIVEN in parameters
// WHEN
let actual = test_string.is_whitespace_or_empty();
// THEN
assert_eq!(actual, expected);
}
#[rstest]
#[case(&[], true)]
#[case(&["foo"], false)]
#[case(&["foo",""], true)]
#[case(&["foo","bar"], false)]
#[case(&["foo","bar baz"], false)]
#[case(&[""], true)]
#[case(&[" "], true)]
fn GIVEN_string_list_WHEN_is_whitespace_or_empty_THEN_correct_result(
#[case] test_list: &[&str],
#[case] expected: bool,
) {
// GIVEN in parameters
// WHEN
let actual = test_list.is_empty_or_any_empty_or_whitespace();
// THEN
assert_eq!(actual, expected);
}
#[rstest]
#[case('a', true)]
#[case('l', true)]
#[case('z', true)]
#[case('A', true)]
#[case('L', true)]
#[case('Z', true)]
#[case('0', true)]
#[case('3', true)]
#[case('9', true)]
#[case('-', true)]
#[case('_', false)]
#[case('.', false)]
fn GIVEN_char_WHEN_is_ldh_THEN_correct_result(#[case] test_char: char, #[case] expected: bool) {
// GIVEN in parameters
// WHEN
let actual = test_char.is_ldh();
// THEN
assert_eq!(actual, expected);
}
#[rstest]
#[case("foo", true)]
#[case("", false)]
#[case("foo-bar", true)]
#[case("foo bar", false)]
fn GIVEN_string_WHEN_is_ldh_string_THEN_correct_result(
#[case] test_string: &str,
#[case] expected: bool,
) {
// GIVEN in parameters
// WHEN
let actual = test_string.is_ldh_string();
// THEN
assert_eq!(actual, expected);
}
#[rstest]
#[case("foo", false)]
#[case("", false)]
#[case("foo-bar", false)]
#[case("foo bar", false)]
#[case(".", false)]
#[case(".foo.bar", false)]
#[case(".foo", true)]
fn GIVEN_string_WHEN_is_tld_THEN_correct_result(
#[case] test_string: &str,
#[case] expected: bool,
) {
// GIVEN in parameters
// WHEN
let actual = test_string.is_tld();
// THEN
assert_eq!(actual, expected);
}
#[rstest]
#[case(&[], false)]
#[case(&["foo"], true)]
#[case(&["foo",""], false)]
#[case(&["foo","bar"], true)]
#[case(&["foo","bar baz"], false)]
#[case(&[""], false)]
#[case(&[" "], false)]
fn GIVEN_string_list_WHEN_is_ldh_string_list_THEN_correct_result(
#[case] test_list: &[&str],
#[case] expected: bool,
) {
// GIVEN in parameters
// WHEN
let actual = test_list.is_ldh_string_list();
// THEN
assert_eq!(actual, expected);
}
#[rstest]
#[case("foo", true)]
#[case("", false)]
#[case(".", true)]
#[case("foo.bar", true)]
#[case("foo.bar.", true)]
fn GIVEN_string_WHEN_is_ldh_domain_name_THEN_correct_result(
#[case] test_string: &str,
#[case] expected: bool,
) {
// GIVEN in parameters
// WHEN
let actual = test_string.is_ldh_domain_name();
// THEN
assert_eq!(actual, expected);
}
#[rstest]
#[case("foo", true)]
#[case("", false)]
#[case(".", true)]
#[case("foo.bar", true)]
#[case("foo.bar.", true)]
#[case("fo_o.bar.", false)]
#[case("fo o.bar.", false)]
fn GIVEN_string_WHEN_is_unicode_domain_name_THEN_correct_result(
#[case] test_string: &str,
#[case] expected: bool,
) {
// GIVEN in parameters
// WHEN
let actual = test_string.is_unicode_domain_name();
// THEN
assert_eq!(actual, expected);
}
}
|
