f8ae6fa713
From the spec: https://tc39.es/ecma262/#sec-literals-numeric-literals The SourceCharacter immediately following a NumericLiteral must not be an IdentifierStart or DecimalDigit. For example: 3in is an error and not the two input elements 3 and in.
51 lines
1.3 KiB
JavaScript
51 lines
1.3 KiB
JavaScript
// FIXME: Some of the test cases below are duplicated, presumably to test
|
|
// uppercase as well which then got lowercased by Prettier at some point.
|
|
|
|
test("hex literals", () => {
|
|
expect(0xff).toBe(255);
|
|
expect(0xff).toBe(255);
|
|
});
|
|
|
|
test("octal literals", () => {
|
|
expect(0o10).toBe(8);
|
|
expect(0o10).toBe(8);
|
|
expect(010).toBe(8);
|
|
});
|
|
|
|
test("binary literals", () => {
|
|
expect(0b10).toBe(2);
|
|
expect(0b10).toBe(2);
|
|
});
|
|
|
|
test("exponential literals", () => {
|
|
expect(1e3).toBe(1000);
|
|
expect(1e3).toBe(1000);
|
|
expect(1e-3).toBe(0.001);
|
|
expect(1e1).toBe(10);
|
|
expect(0.1e1).toBe(1);
|
|
expect(0.1e1).toBe(1);
|
|
expect(0.1e1).toBe(1);
|
|
expect(0.1e1).toBe(1);
|
|
});
|
|
|
|
test("decimal numbers", () => {
|
|
expect(1).toBe(1);
|
|
expect(0.1).toBe(0.1);
|
|
});
|
|
|
|
test("accessing properties of decimal numbers", () => {
|
|
Number.prototype.foo = "foo";
|
|
expect((1).foo).toBe("foo");
|
|
expect((1.1).foo).toBe("foo");
|
|
expect((0.1).foo).toBe("foo");
|
|
});
|
|
|
|
test("invalid numeric literals", () => {
|
|
expect("1e").not.toEval();
|
|
expect("0x").not.toEval();
|
|
expect("0b").not.toEval();
|
|
expect("0o").not.toEval();
|
|
expect("'use strict'; 0755").not.toEval();
|
|
expect("1in[]").not.toEval();
|
|
expect("2instanceof foo").not.toEval();
|
|
});
|