mirror of
https://github.com/rustwasm/wasm-bindgen.git
synced 2024-12-17 22:51:47 +03:00
93 lines
2.5 KiB
Rust
93 lines
2.5 KiB
Rust
use js_sys::*;
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use wasm_bindgen::prelude::*;
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use wasm_bindgen::JsCast;
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use wasm_bindgen_test::*;
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#[wasm_bindgen_test]
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fn parse_array() {
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let js_array = JSON::parse("[1, 2, 3]").unwrap();;
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assert!(Array::is_array(&js_array));
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let array = Array::from(&js_array);
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assert_eq!(array.length(), 3);
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assert_eq!(array.pop(), 3);
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assert_eq!(array.pop(), 2);
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assert_eq!(array.pop(), 1);
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}
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#[wasm_bindgen_test]
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fn parse_object() {
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let js_object = JSON::parse("{\"x\": 5, \"y\": true, \"z\": [\"foo\", \"bar\"]}").unwrap();
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assert!(js_object.is_object());
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let obj = Object::from(js_object);
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let keys = Object::keys(&obj);
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assert_eq!(keys.length(), 3);
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assert_eq!(keys.pop().as_string().unwrap(), "z");
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assert_eq!(keys.pop().as_string().unwrap(), "y");
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assert_eq!(keys.pop().as_string().unwrap(), "x");
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let values = Object::values(&obj);
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assert_eq!(values.length(), 3);
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let z = values.pop();
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assert!(Array::is_array(&z));
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let z_array = Array::from(&z);
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assert_eq!(z_array.length(), 2);
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let y = values.pop();
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assert_eq!(y.as_bool(), Some(true));
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let x = values.pop();
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assert!(Number::is_integer(&x));
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let x_num = Number::new(&x);
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assert_eq!(x_num.value_of(), 5.0);
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}
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#[wasm_bindgen_test]
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fn parse_error() {
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let js_object = JSON::parse("invalid json");
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assert!(js_object.is_err());
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let err = js_object.unwrap_err();
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assert!(err.is_instance_of::<Error>());
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}
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#[wasm_bindgen_test]
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fn stringify() {
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let arr = Array::new();
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arr.push(&JsValue::from(1));
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arr.push(&JsValue::from(true));
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arr.push(&JsValue::from("hello"));
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let str = JSON::stringify(&JsValue::from(arr)).unwrap();
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let rust_str: String = From::from(str);
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assert_eq!(rust_str, "[1,true,\"hello\"]");
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}
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#[wasm_bindgen_test]
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fn stringify_error() {
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let func = Function::new_no_args("throw new Error(\"rust really rocks\")");
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let obj = Object::new();
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Reflect::set(obj.as_ref(), &JsValue::from("toJSON"), func.as_ref()).unwrap();
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let result = JSON::stringify(&JsValue::from(obj));
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assert!(result.is_err());
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let err_obj = result.unwrap_err();
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assert!(err_obj.is_instance_of::<Error>());
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let err: &Error = err_obj.dyn_ref().unwrap();
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let err_msg: String = From::from(err.message());
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assert!(err_msg.contains("rust really rocks"));
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}
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#[wasm_bindgen_test]
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fn json_extends() {
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#[wasm_bindgen]
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extern "C" {
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#[wasm_bindgen(js_name = JSON)]
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static json: JSON;
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}
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assert!(json.is_instance_of::<Object>());
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let _: &Object = json.as_ref();
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}
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