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27 lines
857 B
JavaScript
27 lines
857 B
JavaScript
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describe("numeric separators", () => {
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test("numeric separator works for 'normal' number", () => {
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expect("1_2").toEvalTo(12);
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expect("4_2.4_2").toEvalTo(42.42);
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expect("1_2e0_2").toEvalTo(1200);
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expect("1_2E+_1").not.toEval();
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expect("1_2E+0_1").toEvalTo(120);
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});
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test("cannot use numeric separator after .", () => {
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expect("4._3").not.toEval();
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expect("0._3").not.toEval();
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expect("1_.3._3").not.toEval();
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// Actually a valid attempt to get property '_3' on 1.3 which fails but does parse.
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expect("1.3._3").toEval();
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});
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test("cannot use numeric separator in octal escaped number", () => {
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expect("00_1").not.toEval();
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expect("01_1").not.toEval();
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expect("07_3").not.toEval();
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expect("00_1").not.toEval();
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});
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});
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