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react-code-dataset / react-hook-form /src /__tests__ /logic /iterateFieldsByAction.test.ts
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import iterateFieldsByAction from '../../logic/iterateFieldsByAction';
describe('iterateFieldsByAction', () => {
it('should focus on the first error it encounter', () => {
const focus = jest.fn();
iterateFieldsByAction(
{
test: {
_f: {
name: 'test',
ref: {
name: 'test',
focus,
},
},
},
},
(ref) => {
ref.focus && ref.focus();
return 1;
},
);
expect(focus).toBeCalled();
});
it('should focus on first option when options input error encounters', () => {
const focus = jest.fn();
iterateFieldsByAction(
{
test: {
_f: {
name: 'test',
ref: {
name: 'test',
},
refs: [
{
focus,
} as unknown as HTMLInputElement,
],
},
},
},
(ref) => {
ref.focus && ref.focus();
return 1;
},
);
expect(focus).toBeCalled();
});
it('should not call focus when field is undefined', () => {
expect(() => {
iterateFieldsByAction(
{
test: undefined,
},
(ref) => {
ref.focus && ref.focus();
return 1;
},
);
}).not.toThrow();
});
it('should focus on the first error it encounter and not the second', () => {
const focus = jest.fn();
iterateFieldsByAction(
{
first: {
_f: {
name: 'first',
ref: {
name: 'first',
focus,
},
},
},
second: {
_f: {
name: 'second',
ref: {
name: 'second',
focus,
},
},
},
},
(ref) => {
// @ts-expect-error we want to test with what focus was called
ref.focus && ref.focus(ref.name);
return 1;
},
);
expect(focus).toBeCalledWith('first');
expect(focus).not.toBeCalledWith('second');
});
it('should recursively drill into objects', () => {
const focus = jest.fn();
iterateFieldsByAction(
{
test: {
name: {
first: {
_f: {
name: 'name.first',
ref: {
name: 'first',
focus,
},
},
},
last: {
_f: {
name: 'name.last',
ref: {
name: 'last',
focus,
},
},
},
},
},
},
(ref, key) => {
if (key === 'name.last') {
// @ts-expect-error we want to test with what focus was called
ref.focus && ref.focus(ref.name);
return 1;
}
return;
},
);
expect(focus).not.toBeCalledWith('first');
expect(focus).toBeCalledWith('last');
});
it('should should recursively drill into objects and break out of all loops on first focus', () => {
const focus = jest.fn();
const notFocus = jest.fn();
iterateFieldsByAction(
{
personal: {
name: {
first: {
_f: {
name: 'name.first',
ref: {
name: 'first',
focus: notFocus,
},
},
},
last: {
_f: {
name: 'name.last',
ref: {
name: 'last',
focus,
},
},
},
},
phone: {
_f: {
name: 'phone',
ref: {
name: 'phone',
focus: notFocus,
},
},
},
address: {
line1: {
_f: {
name: 'address.line1',
ref: {
name: 'line1',
focus: notFocus,
},
},
},
},
},
},
(ref, key) => {
// @ts-expect-error we want to test with what focus was called
ref.focus && ref.focus(ref.name);
return key === 'name.last' ? 1 : undefined;
},
);
// 'focus' should be called on 'last' and never again
expect(focus).not.toBeCalledWith('first'); // not valid
expect(focus).toBeCalledWith('last'); // valid
expect(focus).not.toBeCalledWith('phone'); // stopped
expect(focus).not.toBeCalledWith('line1');
// 'notFocus' should be called on the first, then never again
expect(notFocus).toBeCalledWith('first'); // not valid
expect(notFocus).not.toBeCalledWith('last'); // valid
expect(notFocus).not.toBeCalledWith('phone'); // stopped
expect(notFocus).not.toBeCalledWith('line1');
});
});