23 lines
651 B
JavaScript
23 lines
651 B
JavaScript
test("using undefined variable in initializer", () => {
|
|
expect(() => {
|
|
for (let i = foo; i < 100; ++i) {}
|
|
}).toThrowWithMessage(ReferenceError, "'foo' is not defined");
|
|
});
|
|
|
|
test("using undefined variable in condition", () => {
|
|
expect(() => {
|
|
for (let i = 0; i < foo; ++i) {}
|
|
}).toThrowWithMessage(ReferenceError, "'foo' is not defined");
|
|
});
|
|
|
|
test("using undefined variable in updater", () => {
|
|
let loopCount = 0;
|
|
|
|
expect(() => {
|
|
for (let i = 0; i < 100; ++foo) {
|
|
loopCount++;
|
|
}
|
|
}).toThrowWithMessage(ReferenceError, "'foo' is not defined");
|
|
|
|
expect(loopCount).toBe(1);
|
|
});
|