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22 lines
556 B
JavaScript
22 lines
556 B
JavaScript
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var foo = 1;
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let bar = 2;
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const baz = 3;
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test("behavior of program-level var/let/const", () => {
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expect(foo).toBe(1);
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expect(bar).toBe(2);
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expect(baz).toBe(3);
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expect(globalThis.foo).toBe(1);
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expect(globalThis.bar).toBeUndefined();
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expect(globalThis.baz).toBeUndefined();
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globalThis.foo = 4;
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globalThis.bar = 5;
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globalThis.baz = 6;
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expect(foo).toBe(4);
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expect(bar).toBe(2);
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expect(baz).toBe(3);
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expect(globalThis.foo).toBe(4);
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expect(globalThis.bar).toBe(5);
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expect(globalThis.baz).toBe(6);
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});
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