ladybird/Libraries/LibJS/Tests/for-of-basic.js

43 lines
930 B
JavaScript

load("test-common.js");
try {
assertThrowsError(() => {
for (const _ of 123) {}
}, {
error: TypeError,
message: "for..of right-hand side must be iterable"
});
assertThrowsError(() => {
for (const _ of {foo: 1, bar: 2}) {}
}, {
error: TypeError,
message: "for..of right-hand side must be iterable"
});
assertVisitsAll(visit => {
for (const num of [1, 2, 3]) {
visit(num);
}
}, [1, 2, 3]);
assertVisitsAll(visit => {
for (const char of "hello") {
visit(char);
}
}, ["h", "e", "l", "l", "o"]);
assertVisitsAll(visit => {
for (const char of new String("hello")) {
visit(char);
}
}, ["h", "e", "l", "l", "o"]);
var char;
for (char of "abc");
assert(char === "c");
console.log("PASS");
} catch (e) {
console.log("FAIL: " + e);
}