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//! Tests that some of our more obscure intrinsics work properly.
use std::convert::TryFrom;
use std::fmt::Debug;
use js_sys::{Array, Object, RangeError, Reflect};
use wasm_bindgen::{JsCast, JsValue};
use wasm_bindgen_test::wasm_bindgen_test;
// Shorter `JsValue::from(i32)`.
fn int(x: i32) -> JsValue {
JsValue::from(x)
}
#[wasm_bindgen_test]
fn bitwise() {
assert_eq!(int(0b1110) & int(0b0111), 0b0110);
assert_eq!(int(0b1000) | int(0b0010), 0b1010);
assert_eq!(int(0b1110) ^ int(0b0100), 0b1010);
assert_eq!(int(0x00ffffff).bit_not(), 0xff000000u32 as i32);
assert_eq!(int(0b0001) << int(2), 0b0100);
assert_eq!(int(0b1000) >> int(2), 0b0010);
assert_eq!(int(-0b1000) >> int(2), -0b0010);
// Note that bit-wise, this is the same as the above `-0b1000`.
assert_eq!(
JsValue::from(0xfffffff8u32).unsigned_shr(&int(2)),
0x3ffffffe
);
}
#[wasm_bindgen_test]
fn arithmetic() {
assert_eq!(-int(12), -12);
assert_eq!(int(1) + int(2), 3);
assert_eq!(int(1) - int(2), -1);
assert_eq!(int(10) / int(5), 2);
assert_eq!(int(42).checked_div(&int(6)), 7);
// Note that this doesn't throw for regular numbers, since they just give
// `NaN` for invalid results.
assert!(JsValue::bigint_from_str("0")
.checked_div(&JsValue::bigint_from_str("0"))
.dyn_into::<RangeError>()
.is_ok());
assert_eq!(int(12) * int(34), 408);
assert_eq!(int(17) % int(10), 7);
assert_eq!(int(2).pow(&int(8)), 256)
}
#[wasm_bindgen_test]
fn cmp() {
assert!(int(2).lt(&int(3)));
assert!(!int(2).lt(&int(2)));
assert!(int(2).le(&int(3)));
assert!(int(2).le(&int(2)));
assert!(int(3).ge(&int(2)));
assert!(int(3).ge(&int(3)));
assert!(int(3).gt(&int(2)));
assert!(!int(3).gt(&int(3)));
assert!(int(2) == int(2));
assert!(int(2) != int(3));
assert!(int(2) != JsValue::from_str("2"));
assert!(int(2).loose_eq(&JsValue::from_str("2")));
}
#[wasm_bindgen_test]
fn types() {
assert!(
Reflect::get(&js_sys::global(), &JsValue::from_str("Number"))
.unwrap()
.is_function()
);
assert!(JsValue::UNDEFINED.is_undefined());
assert!(JsValue::NULL.is_null());
assert!(Object::new().is_object());
assert!(Array::new().is_array());
assert!(JsValue::symbol(None).is_symbol());
assert!(JsValue::from_str("hi").is_string());
assert!(JsValue::bigint_from_str("5").is_bigint());
assert_eq!(int(5).js_typeof(), "number");
assert_eq!(JsValue::bigint_from_str("5").js_typeof(), "bigint");
assert_eq!(JsValue::NULL.js_typeof(), "object");
}
#[wasm_bindgen_test]
fn misc() {
assert!(JsValue::from_str("Number").js_in(&js_sys::global()));
assert!(!JsValue::from_str("frob").js_in(&js_sys::global()));
assert_eq!(int(5).unchecked_into_f64(), 5.0);
assert_eq!(JsValue::from_str("5").unchecked_into_f64(), 5.0);
assert_eq!(f64::try_from(int(5)), Ok(5.0));
assert_eq!(f64::try_from(JsValue::from_str("5")), Ok(5.0));
assert!(f64::try_from(JsValue::from_str("hi")).unwrap().is_nan());
assert!(f64::try_from(JsValue::symbol(None)).is_err());
}
fn debug(x: impl Debug) -> String {
format!("{x:?}")
}
#[wasm_bindgen_test]
fn debug_string() {
assert_eq!(debug(int(5)), "JsValue(5)");
assert_eq!(debug(JsValue::TRUE), "JsValue(true)");
assert_eq!(debug(JsValue::symbol(None)), "JsValue(Symbol)");
assert_eq!(debug(JsValue::from_str("hi")), "JsValue(\"hi\")");
}
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