Test <Form /> component (#112)

Author: TrySound

tests/components/Form.test.js

@@ -1,9 +1,71 @@
 import * as React from 'react'
 import TestRenderer from 'react-test-renderer'
 import { Form } from '../../src'
+import { lastCallArg } from './utils'
 
 test('<Form />', () => {
   const renderFn = jest.fn().mockReturnValue(null)
-  TestRenderer.create(<Form render={renderFn} />)
-  // TODO
+  TestRenderer.create(
+    <Form initial={{ prop1: '1', prop2: '2' }} render={renderFn} />
+  )
+
+  expect(renderFn).toBeCalledTimes(1)
+  expect(renderFn).lastCalledWith(
+    expect.objectContaining({ values: { prop1: '1', prop2: '2' } })
+  )
+
+  expect(lastCallArg(renderFn).input('prop1')).toEqual(
+    expect.objectContaining({
+      value: '1',
+      bind: expect.objectContaining({ value: '1' }),
+    })
+  )
+  expect(lastCallArg(renderFn).input('prop2')).toEqual(
+    expect.objectContaining({
+      value: '2',
+      bind: expect.objectContaining({ value: '2' }),
+    })
+  )
+
+  lastCallArg(renderFn)
+    .input('prop1')
+    .set('10')
+  lastCallArg(renderFn)
+    .input('prop2')
+    .bind.onChange({ target: { value: '20' } })
+
+  expect(lastCallArg(renderFn).input('prop1')).toEqual(
+    expect.objectContaining({
+      value: '10',
+      bind: expect.objectContaining({ value: '10' }),
+    })
+  )
+  expect(lastCallArg(renderFn).input('prop2')).toEqual(
+    expect.objectContaining({
+      value: '20',
+      bind: expect.objectContaining({ value: '20' }),
+    })
+  )
+})
+
+test('<Form onChange />', () => {
+  const renderFn = jest.fn().mockReturnValue(null)
+  const onChangeFn = jest.fn()
+  TestRenderer.create(
+    <Form initial={{ prop: '1' }} onChange={onChangeFn} render={renderFn} />
+  )
+
+  expect(onChangeFn).toBeCalledTimes(0)
+
+  lastCallArg(renderFn)
+    .input('prop')
+    .set('10')
+  expect(onChangeFn).toBeCalledTimes(1)
+  expect(onChangeFn).lastCalledWith({ prop: '10' })
+
+  lastCallArg(renderFn)
+    .input('prop')
+    .bind.onChange({ target: { value: '100' } })
+  expect(onChangeFn).toBeCalledTimes(2)
+  expect(onChangeFn).lastCalledWith({ prop: '100' })
 })