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test rendered output instead of state in react write a simple counter challenge (#36791)

pull/37155/head
Johnny Zabala 2019-10-09 10:52:41 -04:00 committed by Tom
parent ac1d0a6f78
commit e9bbcc55cd
1 changed files with 4 additions and 4 deletions
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8
curriculum/challenges/english/03-front-end-libraries/react/write-a-simple-counter.english.md
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@ -25,13 +25,13 @@ tests:
- text: <code>Counter</code> should return a <code>div</code> element which contains three buttons with text content in this order <code>Increment!</code>, <code>Decrement!</code>, <code>Reset</code>.
testString: assert((() => { const mockedComponent = Enzyme.mount(React.createElement(Counter)); return (mockedComponent.find('.inc').text() === 'Increment!' && mockedComponent.find('.dec').text() === 'Decrement!' && mockedComponent.find('.reset').text() === 'Reset'); })());
- text: The state of <code>Counter</code> should initialize with a <code>count</code> property set to <code>0</code>.
testString: assert.strictEqual(Enzyme.mount(React.createElement(Counter)).state('count'), 0);
testString: 'const mockedComponent = Enzyme.mount(React.createElement(Counter)); assert(mockedComponent.find("h1").text() === "Current Count: 0")'
- text: Clicking the increment button should increment the count by <code>1</code>.
testString: 'async () => { const waitForIt = (fn) => new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 250)); const mockedComponent = Enzyme.mount(React.createElement(Counter)); const first = () => { mockedComponent.setState({ count: 0 }); return waitForIt(() => mockedComponent.state(''count'')); }; const second = () => { mockedComponent.find(''.inc'').simulate(''click''); return waitForIt(() => mockedComponent.state(''count'')); }; const firstValue = await first(); const secondValue = await second(); assert(firstValue === 0 && secondValue === 1); }; '
testString: 'const mockedComponent = Enzyme.mount(React.createElement(Counter)); mockedComponent.find(".inc").simulate("click"); assert(mockedComponent.find("h1").text() === "Current Count: 1")'
- text: Clicking the decrement button should decrement the count by <code>1</code>.
testString: 'async () => { const waitForIt = (fn) => new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 250)); const mockedComponent = Enzyme.mount(React.createElement(Counter)); const first = () => { mockedComponent.setState({ count: 0 }); return waitForIt(() => mockedComponent.state(''count'')); }; const second = () => { mockedComponent.find(''.dec'').simulate(''click''); return waitForIt(() => mockedComponent.state(''count'')); }; const firstValue = await first(); const secondValue = await second(); assert(firstValue === 0 && secondValue === -1); }; '
testString: 'const mockedComponent = Enzyme.mount(React.createElement(Counter)); mockedComponent.find(".dec").simulate("click"); assert(mockedComponent.find("h1").text() === "Current Count: -1")'
- text: Clicking the reset button should reset the count to <code>0</code>.
testString: 'async () => { const waitForIt = (fn) => new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 250)); const mockedComponent = Enzyme.mount(React.createElement(Counter)); const init = () => { mockedComponent.setState({ count: 0 }); return waitForIt(() => mockedComponent.state(''count'')); }; const increment = () => { mockedComponent.find(''.inc'').simulate(''click''); mockedComponent.find(''.inc'').simulate(''click''); mockedComponent.find(''.inc'').simulate(''click''); return waitForIt(() => mockedComponent.state(''count'')); }; const decrement = () => { mockedComponent.find(''.dec'').simulate(''click''); return waitForIt(() => mockedComponent.state(''count'')); }; const reset = () => { mockedComponent.find(''.reset'').simulate(''click''); return waitForIt(() => mockedComponent.state(''count'')); }; const firstValue = await init(); const secondValue = await increment(); const thirdValue = await decrement(); const fourthValue = await reset(); assert(firstValue === 0 && secondValue === 3 && thirdValue === 2 && fourthValue === 0); }; '
testString: 'const mockedComponent = Enzyme.mount(React.createElement(Counter)); mockedComponent.setState({ count: 5 }); const currentCountElement = mockedComponent.find("h1"); assert(currentCountElement.text() === "Current Count: 5"); mockedComponent.find(".reset").simulate("click"); assert(currentCountElement.text() === "Current Count: 0");'
```