zulip/frontend_tests/node_tests/fold_dict.js
Anders Kaseorg 6ec808b8df js: Add "use strict" directive to CommonJS files.
ES and TypeScript modules are strict by default and don’t need this
directive.  ESLint will remind us to add it to new CommonJS files and
remove it from ES and TypeScript modules.

Signed-off-by: Anders Kaseorg <[email protected]>
2020-07-31 22:09:46 -07:00

98 lines
2.2 KiB
JavaScript

"use strict";
const FoldDict = zrequire("fold_dict").FoldDict;
run_test("basic", () => {
const d = new FoldDict();
assert.equal(d.size, 0);
assert.deepEqual(Array.from(d.keys()), []);
d.set("foo", "bar");
assert.equal(d.get("foo"), "bar");
assert.notEqual(d.size, 0);
d.set("foo", "baz");
assert.equal(d.get("foo"), "baz");
assert.equal(d.size, 1);
d.set("bar", "qux");
assert.equal(d.get("foo"), "baz");
assert.equal(d.get("bar"), "qux");
assert.equal(d.size, 2);
assert.equal(d.has("bar"), true);
assert.equal(d.has("baz"), false);
assert.deepEqual(Array.from(d.keys()), ["foo", "bar"]);
assert.deepEqual(Array.from(d.values()), ["baz", "qux"]);
assert.deepEqual(Array.from(d), [
["foo", "baz"],
["bar", "qux"],
]);
d.delete("bar");
assert.equal(d.has("bar"), false);
assert.strictEqual(d.get("bar"), undefined);
assert.deepEqual(Array.from(d.keys()), ["foo"]);
const val = ["foo"];
const res = d.set("abc", val);
assert.strictEqual(res, d);
});
run_test("case insensitivity", () => {
const d = new FoldDict();
assert.deepEqual(Array.from(d.keys()), []);
assert(!d.has("foo"));
d.set("fOO", "Hello World");
assert.equal(d.get("foo"), "Hello World");
assert(d.has("foo"));
assert(d.has("FOO"));
assert(!d.has("not_a_key"));
assert.deepEqual(Array.from(d.keys()), ["fOO"]);
d.delete("Foo");
assert.equal(d.has("foo"), false);
assert.deepEqual(Array.from(d.keys()), []);
});
run_test("clear", () => {
const d = new FoldDict();
function populate() {
d.set("fOO", 1);
assert.equal(d.get("foo"), 1);
d.set("bAR", 2);
assert.equal(d.get("bar"), 2);
}
populate();
assert.equal(d.size, 2);
d.clear();
assert.equal(d.get("fOO"), undefined);
assert.equal(d.get("bAR"), undefined);
assert.equal(d.size, 0);
// make sure it still works after clearing
populate();
assert.equal(d.size, 2);
});
run_test("undefined_keys", () => {
const d = new FoldDict();
assert.throws(
() => d.has(undefined),
TypeError,
"Tried to call a FoldDict method with an undefined key.",
);
});