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34 lines
1.3 KiB
JavaScript
34 lines
1.3 KiB
JavaScript
test("length is 1", () => {
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expect(Array.isArray).toHaveLength(1);
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});
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test("arguments that evaluate to false", () => {
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expect(Array.isArray()).toBeFalse();
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expect(Array.isArray("1")).toBeFalse();
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expect(Array.isArray("foo")).toBeFalse();
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expect(Array.isArray(1)).toBeFalse();
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expect(Array.isArray(1, 2, 3)).toBeFalse();
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expect(Array.isArray(undefined)).toBeFalse();
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expect(Array.isArray(null)).toBeFalse();
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expect(Array.isArray(Infinity)).toBeFalse();
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expect(Array.isArray({})).toBeFalse();
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});
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test("arguments that evaluate to true", () => {
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expect(Array.isArray([])).toBeTrue();
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expect(Array.isArray([1])).toBeTrue();
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expect(Array.isArray([1, 2, 3])).toBeTrue();
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expect(Array.isArray(new Array())).toBeTrue();
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expect(Array.isArray(new Array(10))).toBeTrue();
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expect(Array.isArray(new Array("a", "b", "c"))).toBeTrue();
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expect(Array.isArray(Array.prototype)).toBeTrue();
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expect(Array.isArray(new Proxy([], {}))).toBeTrue();
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});
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test("Revoked Proxy as argument throws", () => {
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const revocable = Proxy.revocable([], {});
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revocable.revoke();
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expect(() => {
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Array.isArray(revocable.proxy);
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}).toThrowWithMessage(TypeError, "An operation was performed on a revoked Proxy object");
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});
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