2822da8c8f
eval only has direct access to the local scope when accessed through the name eval. This includes locals named eval, because of course it does.
75 lines
2.1 KiB
JavaScript
75 lines
2.1 KiB
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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// These eval scope tests use function expressions due to bug #8198
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var testValue = "outer";
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test("eval only touches locals if direct use", function () {
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var testValue = "inner";
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expect(globalThis.eval("testValue")).toEqual("outer");
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});
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test("alias to eval works as a global eval", function () {
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var testValue = "inner";
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var eval1 = globalThis.eval;
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expect(eval1("testValue")).toEqual("outer");
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});
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test("eval evaluates all args", function () {
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var i = 0;
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expect(eval("testValue", i++, i++, i++)).toEqual("outer");
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expect(i).toEqual(3);
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});
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test("eval tests for exceptions", function () {
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var i = 0;
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expect(function () {
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eval("testValue", i++, i++, j, i++);
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}).toThrowWithMessage(ReferenceError, "'j' is not defined");
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expect(i).toEqual(2);
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});
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test("direct eval inherits non-strict evaluation", function () {
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expect(eval("01")).toEqual(1);
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});
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test("direct eval inherits strict evaluation", function () {
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"use strict";
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expect(() => {
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eval("01");
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}).toThrowWithMessage(SyntaxError, "Unprefixed octal number not allowed in strict mode");
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});
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test("global eval evaluates as non-strict", function () {
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"use strict";
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expect(globalThis.eval("01"));
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});
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