87068896d0
Exactly like in 99f9609, which fixed the same issue in CallExpression,
the spec tells us to *first* evaluate the arguments, if any, and *then*
check if the provided value is a constructor function.
65 lines
1.8 KiB
JavaScript
65 lines
1.8 KiB
JavaScript
describe("CallExpression", () => {
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test("callee is evaluated before arguments", () => {
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function foo() {}
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const values = [];
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[foo][(values.push("callee"), 0)](values.push("args"));
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expect(values).toEqual(["callee", "args"]);
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});
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test("arguments are evaluated in order", () => {
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function foo() {}
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const values = [];
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foo(values.push("arg1"), values.push("arg2"), values.push("arg3"));
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expect(values).toEqual(["arg1", "arg2", "arg3"]);
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});
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test("arguments are evaluated before callee is checked for its type", () => {
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const values = [];
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expect(() => {
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"foo"(values.push("args"));
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}).toThrowWithMessage(TypeError, "foo is not a function");
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expect(values).toEqual(["args"]);
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expect(() => {
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"foo"(bar);
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}).toThrowWithMessage(ReferenceError, "'bar' is not defined");
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});
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});
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describe("NewExpression", () => {
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test("callee is evaluated before arguments", () => {
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function Foo() {}
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const values = [];
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new [Foo][(values.push("callee"), 0)](values.push("args"));
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expect(values).toEqual(["callee", "args"]);
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});
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test("arguments are evaluated in order", () => {
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function Foo() {}
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const values = [];
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new Foo(values.push("arg1"), values.push("arg2"), values.push("arg3"));
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expect(values).toEqual(["arg1", "arg2", "arg3"]);
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});
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test("arguments are evaluated before callee is checked for its type", () => {
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const values = [];
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expect(() => {
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new "Foo"(values.push("args"));
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}).toThrowWithMessage(TypeError, "Foo is not a constructor");
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expect(values).toEqual(["args"]);
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expect(() => {
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new "Foo"(bar);
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}).toThrowWithMessage(ReferenceError, "'bar' is not defined");
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});
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});
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