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test(expect): add test of iterableEquality (#5222)

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Co-authored-by: Asher Gomez <ashersaupingomez@gmail.com>
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Yoshiya Hinosawa 2024-07-01 16:06:52 +09:00 committed by GitHub
parent 76cf563c42
commit 90025e9db4
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1 changed files with 36 additions and 0 deletions
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36
expect/_to_equal_test.ts
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@ -267,3 +267,39 @@ Deno.test("expect().toEqual() matches when Error Objects are equal", () => {
const expectErrObjectWithEmail = new Error("missing param: email"); const expectErrObjectWithEmail = new Error("missing param: email");
expect(getError()).not.toEqual(expectErrObjectWithEmail); expect(getError()).not.toEqual(expectErrObjectWithEmail);
}); });
Deno.test("expect().toEqual() handles Sets", () => {
expect(new Set([1, 2, 3])).toEqual(new Set([1, 2, 3]));
expect(new Set([1, 2, 3])).not.toEqual(new Set([1, 2]));
expect(new Set([1, 2, 3])).not.toEqual(new Set([1, 2, 4]));
expect(new Set([1, 2, 3, 4])).not.toEqual(new Map([[1, 2], [3, 4]]));
expect(new Set([1, 2, new Set([0, 1])])).toEqual(
new Set([1, 2, new Set([0, 1])]),
);
// It handles circular reference structures
const a = new Set<unknown>([1, 2]);
a.add(a);
const b = new Set<unknown>([1, 2]);
b.add(b);
expect(a).toEqual(b);
});
Deno.test("expect().toEqual() handles Maps", () => {
expect(new Map([[1, 2], [3, 4]])).toEqual(new Map([[1, 2], [3, 4]]));
expect(new Map([[1, 2], [3, 4]])).not.toEqual(new Map([[1, 2], [3, 5]]));
});
// TODO(kt3k): Iterator global exists in the runtime but not in the TypeScript
// Remove the below lines when `Iterator` global is available in TypeScript
// deno-lint-ignore no-explicit-any
const Iterator = (globalThis as any).Iterator;
Deno.test("expect().toEqual() handles iterators", () => {
expect(Iterator.from([1, 2, 3])).toEqual(Iterator.from([1, 2, 3]));
expect(Iterator.from([1, 2, 3])).not.toEqual(Iterator.from([1, 2, 4]));
expect(Iterator.from([1, 2, 3])).not.toEqual(Iterator.from([1, 2, 3, 4]));
const iter0 = Iterator.from([1, 2, 3]);
const iter1 = Iterator.from([1, 2, 3]);
iter1.foo = 1;
expect(iter0).not.toEqual(iter1);
});