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use crate::InvalidValue;
use super::{Value, BaseValue};
#[derive(Debug, PartialEq, Clone, serde::Serialize)]
pub struct TrueValue;
impl TrueValue {
pub fn new() -> Self { Self {} }
pub fn val(&self) -> bool { true }
pub fn boxed(self) -> Box<dyn Value> { Box::new(self) }
}
impl Value for TrueValue {
fn get_baseval(&self) -> BaseValue {
BaseValue::Boolean(true)
}
fn clone_box(&self) -> Box<dyn Value> {
Box::new(self.clone())
}
fn eq_box(&self, other: &Box<dyn Value>) -> bool {
other.is::<Self>()
}
}
impl std::str::FromStr for TrueValue {
type Err = InvalidValue;
fn from_str(s: &str) -> Result<Self, Self::Err> {
if s.to_lowercase() == "true" {
Ok(TrueValue::new())
} else {
Err(InvalidValue::WrongValue)
}
}
}
#[cfg(test)]
mod tests {
use crate::{BaseValue, InvalidValue, value::StringValue};
use super::{TrueValue, Value};
#[test]
fn is_true() {
let true_val = TrueValue::new();
assert_eq!(true_val.val(), true);
assert!(matches!(true_val.get_baseval(), BaseValue::Boolean(f) if f == true));
}
#[test]
fn partial_eq() {
let true_val1 = TrueValue::new();
let true_val2 = TrueValue::new();
assert_eq!(true_val1, true_val2);
let b1: Box<dyn Value> = Box::new(true_val1);
let b2: Box<dyn Value> = Box::new(true_val2);
assert!(b1 == b2);
let string_val = StringValue::try_new("true".to_owned()).unwrap();
let s: Box<dyn Value> = Box::new(string_val);
assert!(b1 != s);
}
#[test]
fn from_str() {
assert_eq!("true".parse::<TrueValue>(), Ok(TrueValue::new()));
assert_eq!("tRuE".parse::<TrueValue>(), Ok(TrueValue::new()));
assert_eq!("tRuEe".parse::<TrueValue>(), Err(InvalidValue::WrongValue));
}
}