ladybird/Libraries/LibJS/Tests/function-missing-arg.js

load("test-common.js");

function foo(a, b) { return a + b; }

try {
    assert(isNaN(foo()) === true);
    assert(isNaN(foo(1)) === true);
    assert(foo(2, 3) === 5);
    assert(foo(2, 3, 4) === 5);
    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: Allow function calls with missing arguments We were interpreting "undefined" as a variable lookup failure in some cases and throwing a ReferenceError exception instead of treating it as the valid value "undefined". This patch wraps the result of variable lookup in Optional<>, which allows us to only throw ReferenceError when lookup actually fails. 2020-03-27 12:54:18 +01:00			`function foo(a, b) { return a + b; }`

			`try {`
			`assert(isNaN(foo()) === true);`
			`assert(isNaN(foo(1)) === true);`
			`assert(foo(2, 3) === 5);`
			`assert(foo(2, 3, 4) === 5);`
			`console.log("PASS");`
			`} catch (e) {`
			`console.log("FAIL: " + e);`
			`}`