mirror of
https://github.com/LadybirdBrowser/ladybird.git
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76 lines
2.0 KiB
JavaScript
76 lines
2.0 KiB
JavaScript
test("non-numeric primitives", () => {
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expect(+false).toBe(0);
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expect(-false).toBe(-0);
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expect(+true).toBe(1);
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expect(-true).toBe(-1);
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expect(+null).toBe(0);
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expect(-null).toBe(-0);
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expect(+undefined).toBeNaN();
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expect(-undefined).toBeNaN();
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});
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test("arrays", () => {
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expect(+[]).toBe(0);
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expect(-[]).toBe(-0);
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expect(+[,]).toBe(0);
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expect(-[,]).toBe(-0);
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expect(+[null]).toBe(0);
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expect(-[null]).toBe(-0);
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expect(+[undefined]).toBe(0);
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expect(-[undefined]).toBe(-0);
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expect(+[[[[[]]]]]).toBe(0);
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expect(-[[[[[]]]]]).toBe(-0);
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expect(+[[[[[42]]]]]).toBe(42);
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expect(-[[[[[42]]]]]).toBe(-42);
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expect(+[, , ,]).toBeNaN();
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expect(-[, , ,]).toBeNaN();
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expect(+[undefined, undefined]).toBeNaN();
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expect(-[undefined, undefined]).toBeNaN();
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expect(+[1, 2, 3]).toBeNaN();
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expect(-[1, 2, 3]).toBeNaN();
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expect(+[[[["foo"]]]]).toBeNaN();
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expect(-[[[["foo"]]]]).toBeNaN();
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});
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test("strings", () => {
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expect(+"").toBe(0);
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expect(-"").toBe(-0);
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expect(+"42").toBe(42);
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expect(-"42").toBe(-42);
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expect(+"1.23").toBe(1.23);
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expect(-"1.23").toBe(-1.23);
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expect(+"foo").toBeNaN();
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expect(-"foo").toBeNaN();
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});
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test("numbers", () => {
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expect(+42).toBe(42);
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expect(-42).toBe(-42);
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expect(+1.23).toBe(1.23);
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expect(-1.23).toBe(-1.23);
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});
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test("infinity", () => {
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expect(+"Infinity").toBe(Infinity);
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expect(+"+Infinity").toBe(Infinity);
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expect(+"-Infinity").toBe(-Infinity);
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expect(-"Infinity").toBe(-Infinity);
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expect(-"+Infinity").toBe(-Infinity);
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expect(-"-Infinity").toBe(Infinity);
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});
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test("space and space-like escapes", () => {
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expect(+" \r \t \n ").toBe(0);
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expect(+" \n \t Infinity \r ").toBe(Infinity);
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expect(+"\r \n1.23 \t\t\t \n").toBe(1.23);
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});
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test("object literals", () => {
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expect(+{}).toBeNaN();
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expect(-{}).toBeNaN();
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expect(+{ a: 1 }).toBeNaN();
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expect(-{ a: 1 }).toBeNaN();
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});
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