ladybird/Libraries/LibJS/Tests/NaN-basic.js

load("test-common.js");

try {
    var nan = undefined + 1;
    assert(nan + "" == "NaN");
    assert(NaN + "" == "NaN");
    assert(nan !== nan);
    assert(NaN !== NaN);
    assert(isNaN(nan) === true);
    assert(isNaN(NaN) === true);
    assert(isNaN(0) === false);
    assert(isNaN(undefined) === true);
    assert(isNaN(null) === false);
    assert(isNaN(Infinity) === false);
    assert(!!NaN === false);
    assert(!!nan === false);
  
    console.log("PASS");
} catch (e) {
    console.log("FAIL: " + e);
}
js/LibJS: Move test functions to pure javascript. The addition of assert functions to Userland/js was done before we had load(..) implemented. Now that it exists, it seems like the right move the test helper functions to pure javascript instead of poluting js with random global functions. 2020-04-13 10:31:13 -07:00			`load("test-common.js");`

LibJS: Basic NaN support This patch adds js_nan() for constructing a NaN value. You can check if a Value is NaN with Value::is_nan(). 2020-03-27 12:26:37 +01:00			`try {`
			`var nan = undefined + 1;`
			`assert(nan + "" == "NaN");`
LibJS: Add NaN to global object 2020-04-01 21:00:09 +01:00			`assert(NaN + "" == "NaN");`
			`assert(nan !== nan);`
			`assert(NaN !== NaN);`
LibJS: Add global isNaN() function 2020-03-27 12:45:36 +01:00			`assert(isNaN(nan) === true);`
LibJS: Add NaN to global object 2020-04-01 21:00:09 +01:00			`assert(isNaN(NaN) === true);`
LibJS: Add global isNaN() function 2020-03-27 12:45:36 +01:00			`assert(isNaN(0) === false);`
LibJS: The global isNaN() should coerce to number before testing NaN For stricter NaN checking, we'll have to implement Number.isNaN(). 2020-03-27 12:59:41 +01:00			`assert(isNaN(undefined) === true);`
LibJS: Add global isNaN() function 2020-03-27 12:45:36 +01:00			`assert(isNaN(null) === false);`
LibJS: Implement Infinity 2020-04-02 16:59:01 +01:00			`assert(isNaN(Infinity) === false);`
LibJS: Return false for NaN numbers in Value::to_boolean() 2020-04-06 22:48:47 -05:00			`assert(!!NaN === false);`
			`assert(!!nan === false);`

LibJS: Basic NaN support This patch adds js_nan() for constructing a NaN value. You can check if a Value is NaN with Value::is_nan(). 2020-03-27 12:26:37 +01:00			`console.log("PASS");`
			`} catch (e) {`
			`console.log("FAIL: " + e);`
			`}`