mirror of
https://github.com/RGBCube/serenity
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7b1ba4bd5c
For something like eval(""), the VM's 'last value' is an empty value,
which we must not leak.
Fixes #6643.
32 lines
860 B
JavaScript
32 lines
860 B
JavaScript
test("basic eval() functionality", () => {
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expect(eval("1 + 2")).toBe(3);
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function foo(a) {
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var x = 5;
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eval("x += a");
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return x;
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}
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expect(foo(7)).toBe(12);
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});
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test("returns value of last value-producing statement", () => {
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// See https://tc39.es/ecma262/#sec-block-runtime-semantics-evaluation
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expect(eval("")).toBeUndefined();
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expect(eval("1;;;;;")).toBe(1);
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expect(eval("1;{}")).toBe(1);
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expect(eval("1;var a;")).toBe(1);
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});
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test("syntax error", () => {
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expect(() => {
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eval("{");
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}).toThrowWithMessage(
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SyntaxError,
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"Unexpected token Eof. Expected CurlyClose (line: 1, column: 2)"
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);
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});
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test("returns 1st argument unless 1st argument is a string", () => {
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var stringObject = new String("1 + 2");
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expect(eval(stringObject)).toBe(stringObject);
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});
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