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FormField.test.tsx
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FormField.test.tsx
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/**
* @jest-environment jsdom
*
* NOTE: we wrap some `expects` in a `setTimeout` because we want the current
* event loop to finish (react render in this case) before checking the value
*
*/
import React from 'react';
import { FormContext } from '../src/FormContext';
import { Form } from '../src/Form';
import { useFormField, UseFormFieldProps, FormField } from '../src/FormField';
import { createForm, Form as DomondaForm, FormTag } from '@domonda/form';
import get from 'lodash/get';
// t
import { render } from '@testing-library/react';
import { renderHook, act } from '@testing-library/react-hooks';
interface DefaultValues {
person: {
[key: string]: {
name: string;
}[];
};
}
const denis = {
name: 'Denis',
};
const erik = {
name: 'Erik',
};
const defaultValues: DefaultValues = {
person: {
'1f!rst': [denis],
'2sec@nd': [erik],
},
};
const pathToDenis = 'person.1f!rst[0]';
const pathToErik = 'person.2sec@nd[0]';
describe('Creation', () => {
it('should properly instantiate form field', () => {
const [form] = createForm(defaultValues);
const path = pathToDenis + '.name';
const initialProps: UseFormFieldProps<string> = { path };
const {
result: { current: field },
} = renderHook(useFormField, {
initialProps,
wrapper: ({ children }) => (
<FormContext.Provider value={form}>{children}</FormContext.Provider>
),
});
expect(form.plumb.state.fields[path]).toBeDefined();
expect(field.value).toBe(denis.name);
expect(field.state.value).toBe(field.value);
expect(field.state.defaultValue).toBe(denis.name);
expect(field.state.changed).toBe(false);
expect(field.state.validityMessage).toBe(null);
expect(field.state.disabled).toBeFalsy();
expect(field.state.readOnly).toBeFalsy();
});
it('should initialize with the correct disabled flag', () => {
const spy = jest.fn((_0) => null);
let form: DomondaForm<DefaultValues>;
render(
<Form disabled defaultValues={defaultValues} getForm={(f) => (form = f)}>
<FormField path={pathToDenis}>{spy}</FormField>
</Form>,
);
// @ts-ignore because form should indeed be set here
if (!form) {
throw new Error('form instance should be set here!');
}
expect(spy).toBeCalled();
expect(spy.mock.calls[0][0].state.disabled).toBeTruthy();
});
it('should initialize with the correct readOnly flag', () => {
const spy = jest.fn((_0) => null);
let form: DomondaForm<DefaultValues>;
render(
<Form readOnly defaultValues={defaultValues} getForm={(f) => (form = f)}>
<FormField path={pathToDenis}>{spy}</FormField>
</Form>,
);
// @ts-ignore because form should indeed be set here
if (!form) {
throw new Error('form instance should be set here!');
}
expect(spy).toBeCalled();
expect(spy.mock.calls[0][0].state.readOnly).toBeTruthy();
});
});
describe('Update', () => {
it('should properly handle field path change', () => {
const [form] = createForm(defaultValues);
let denisNamePath = pathToDenis + '.name';
let erikNamePath = pathToErik + '.name';
const initialProps: UseFormFieldProps<string> = { path: denisNamePath };
const { result, rerender } = renderHook(useFormField, {
initialProps,
wrapper: ({ children }) => (
<FormContext.Provider value={form}>{children}</FormContext.Provider>
),
});
expect(result.current.value).toBe(denis.name);
act(() => rerender({ path: erikNamePath }));
expect(result.current.value).toBe(erik.name);
expect(form.plumb.state.fields[denisNamePath]).toBeUndefined();
expect(form.plumb.state.fields[erikNamePath]).toBeDefined();
});
it('should get new value if changed on form', () => {
const [form] = createForm(defaultValues);
let path = pathToDenis + '.name';
const initialProps: UseFormFieldProps<string> = { path };
const { result } = renderHook(useFormField, {
initialProps,
wrapper: ({ children }) => (
<FormContext.Provider value={form}>{children}</FormContext.Provider>
),
});
const nextValue = 'New denis';
act(() => {
form.plumb.next(
{
...form.plumb.state,
values: {
person: {
'1f!rst': [{ name: nextValue }],
},
},
},
FormTag.VALUES_CHANGE,
);
});
expect(result.current.value).toBe(nextValue);
});
it('should properly handle value update', () => {
const [form] = createForm(defaultValues);
let path = pathToDenis + '.name';
const initialProps: UseFormFieldProps<string> = { path };
const { result } = renderHook(useFormField, {
initialProps,
wrapper: ({ children }) => (
<FormContext.Provider value={form}>{children}</FormContext.Provider>
),
});
const nextValue = 'New denis';
act(() => {
result.current.setValue(nextValue);
});
expect(get(form.state.defaultValues, path)).toBe(denis.name);
expect(get(form.values, path)).toBe(nextValue);
});
it('should reset to default value on reset call', () => {
const [form] = createForm(defaultValues);
let path = pathToDenis + '.name';
const initialProps: UseFormFieldProps<string> = { path };
const { result } = renderHook(useFormField, {
initialProps,
wrapper: ({ children }) => (
<FormContext.Provider value={form}>{children}</FormContext.Provider>
),
});
const nextValue = 'New denis';
act(() => {
result.current.setValue(nextValue);
});
expect(result.current.value).toBe(nextValue);
act(() => {
result.current.resetValue();
});
expect(result.current.state.defaultValue).toBe(result.current.value);
});
it('should call subscribers only when value changes', () => {
const [form] = createForm(defaultValues);
let path = pathToDenis + '.name';
const initialProps: UseFormFieldProps<string> = { path };
const { result, rerender } = renderHook(useFormField, {
initialProps,
wrapper: ({ children }) => (
<FormContext.Provider value={form}>{children}</FormContext.Provider>
),
});
const spy = jest.fn();
result.current.plumb.subscribe(spy);
const nextValue = 'New denis';
act(() => {
result.current.setValue(nextValue);
});
act(() => {
rerender(initialProps);
});
act(() => {
result.current.setValue(nextValue);
});
expect(spy).toBeCalledTimes(1);
});
it('should handle arrays when resetting values on default values change', (done) => {
interface DV {
people: {
id: string;
name: string;
}[];
}
const dv: DV = {
people: [
{
id: '962c7383',
name: 'Denis',
},
{
id: 'a9091de3',
name: 'Foo',
},
{
id: '0f83e892',
name: 'Bar',
},
],
};
let form: DomondaForm<DV>;
const { rerender } = render(
<Form getForm={(f) => (form = f)} resetOnDefaultValuesChange defaultValues={dv}>
{dv.people.map((person, index) => (
<FormField key={person.id} path={`people[${index}].id`}>
{() => null}
</FormField>
))}
</Form>,
);
// @ts-ignore because form should indeed be set here
if (!form) {
throw new Error('form instance should be set here!');
}
expect(Object.keys(form.state.fields).length).toBe(dv.people.length);
const nextDv: DV = {
people: [
{
id: 'a9091de3',
name: 'Foo',
},
{
id: 'd1b7a4e8',
name: 'John',
},
{
id: '962c7383',
name: 'Denis',
},
{
id: '26dc0551',
name: 'Jane',
},
],
};
rerender(
<Form resetOnDefaultValuesChange defaultValues={nextDv}>
{nextDv.people.map((person, index) => (
<FormField key={person.id} path={`people[${index}].id`}>
{() => null}
</FormField>
))}
</Form>,
);
setTimeout(() => {
expect(Object.keys(form.state.fields).length).toBe(nextDv.people.length);
done();
}, 0);
});
it('should not render or set undefined values on array fields', (done) => {
interface DV {
people: string[];
}
const dv: DV = {
people: ['John', 'Foo', 'Bar'],
};
let form: DomondaForm<DV>;
const { rerender } = render(
<Form getForm={(f) => (form = f)} resetOnDefaultValuesChange defaultValues={dv}>
<FormField<any[]> path="people">
{({ value }) => (
<>
{value.map((person: any, index) => (
<FormField key={person} path={`people[${index}]`}>
{() => null}
</FormField>
))}
</>
)}
</FormField>
</Form>,
);
// @ts-ignore because form should indeed be set here
if (!form) {
throw new Error('form instance should be set here!');
}
const nextDv: DV = {
people: ['Foo'],
};
rerender(
<Form resetOnDefaultValuesChange defaultValues={nextDv}>
<FormField<any[]> path="people">
{({ value }) => (
<>
{value.map((person: any, index) => (
<FormField key={person} path={`people[${index}]`}>
{() => null}
</FormField>
))}
</>
)}
</FormField>
</Form>,
);
expect(form.state.values).toEqual(nextDv);
done();
});
it('should get notified about disabled state changes', () => {
const [form] = createForm(defaultValues);
const initialProps: UseFormFieldProps<string> = { path: pathToDenis };
const { result } = renderHook(useFormField, {
initialProps,
wrapper: ({ children }) => (
<FormContext.Provider value={form}>{children}</FormContext.Provider>
),
});
expect(result.current.state.disabled).toBeFalsy();
act(() => {
form.plumb.next(
{
...form.state,
disabled: true,
},
FormTag.FORM_TOGGLE_DISABLE_OR_READ_ONLY,
);
});
expect(result.current.state.disabled).toBeTruthy();
act(() => {
form.plumb.next(
{
...form.state,
disabled: false,
},
FormTag.FORM_TOGGLE_DISABLE_OR_READ_ONLY,
);
});
expect(result.current.state.disabled).toBeFalsy();
});
it('should get notified about readOnly state changes', () => {
const [form] = createForm(defaultValues);
const initialProps: UseFormFieldProps<string> = { path: pathToDenis };
const { result } = renderHook(useFormField, {
initialProps,
wrapper: ({ children }) => (
<FormContext.Provider value={form}>{children}</FormContext.Provider>
),
});
expect(result.current.state.readOnly).toBeFalsy();
act(() => {
form.plumb.next(
{
...form.state,
readOnly: true,
},
FormTag.FORM_TOGGLE_DISABLE_OR_READ_ONLY,
);
});
expect(result.current.state.readOnly).toBeTruthy();
act(() => {
form.plumb.next(
{
...form.state,
readOnly: false,
},
FormTag.FORM_TOGGLE_DISABLE_OR_READ_ONLY,
);
});
expect(result.current.state.readOnly).toBeFalsy();
});
});
describe('Cleanup', () => {
function makeForm<T extends object>(dv: T): [DomondaForm<T>, React.FC] {
const [form] = createForm(dv);
return [
form,
({ children }) => <FormContext.Provider value={form}>{children}</FormContext.Provider>,
];
}
it('should dispose field plumb on unmount', () => {
const [, wrapper] = makeForm(defaultValues);
const path = pathToDenis + '.name';
const initialProps: UseFormFieldProps<string> = { path };
const {
result: { current: field },
unmount,
} = renderHook(useFormField, {
initialProps,
wrapper,
});
const spy = jest.fn();
field.plumb.subscribe({
dispose: spy,
});
unmount();
expect(spy).toBeCalled();
});
it('should dispose previous field on path change', () => {
const [, wrapper] = makeForm(defaultValues);
const path = pathToDenis + '.name';
const initialProps: UseFormFieldProps<string> = { path };
const {
result: { current: field },
rerender,
} = renderHook(useFormField, {
initialProps,
wrapper,
});
const spy = jest.fn();
field.plumb.subscribe({
dispose: spy,
});
act(() => rerender({ path: pathToErik + '.name' }));
expect(spy).toBeCalled();
});
it('should dispose previous field on validation update', () => {
const [, wrapper] = makeForm(defaultValues);
const path = pathToDenis + '.name';
const initialProps: UseFormFieldProps<string> = { path, validate: () => null };
const {
result: { current: field },
rerender,
} = renderHook(useFormField, {
initialProps,
wrapper,
});
const spy = jest.fn();
field.plumb.subscribe({
dispose: spy,
});
act(() => rerender({ path, validate: () => null }));
expect(spy).toBeCalled();
});
});