Code change:
"assert(Enzyme.mount(React.createElement(CheckUserAge)).find('div').find('input').length === 1 && Enzyme.mount(React.createElement(CheckUserAge)).find('div').find('button').length === 1, 'message: The <code>CheckUserAge</code> component should render with a single <code>input</code> element and a single <code>button</code> element.');", "assert(Enzyme.mount(React.createElement(CheckUserAge)).state().input === '' && Enzyme.mount(React.createElement(CheckUserAge)).state().userAge === '', 'message: The <code>CheckUserAge</code> component&apos;s state should be initialized with a property of <code>userAge</code> and a property of <code>input</code>, both set to a value of an empty string.');", "assert(Enzyme.mount(React.createElement(CheckUserAge)).find('button').text() === 'Submit', 'message: When the <code>CheckUserAge</code> component is first rendered to the DOM, the <code>button</code>&apos;s inner text should be Submit.');", <del> "async () => { const waitForIt = (fn) => new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 250)); const mockedComponent = Enzyme.mount(React.createElement(CheckUserAge)); const initialButton = mockedComponent.find('button').text(); const enter3AndClickButton = () => { mockedComponent.find('input').simulate('change', {target: { value: 3 }}); mockedComponent.find('button').simulate('click'); return waitForIt(() => { mockedComponent.update(); return mockedComponent.find('button').text(); }); }; const enter17AndClickButton = () => { mockedComponent.find('input').simulate('change', {target: { value: 17 }}); mockedComponent.find('button').simulate('click'); return waitForIt(() => { mockedComponent.update(); return mockedComponent.find('button').text(); }); }; const userAge3 = await enter3AndClickButton(); const userAge17 = await enter17AndClickButton(); assert(initialButton === 'Submit' && userAge3 === 'You Shall Not Pass' && userAge17 === 'You Shall Not Pass', 'message: When a number of less than 18 is entered into the <code>input</code> element and the <code>button</code> is clicked, the <code>button</code>&apos;s inner text should read <code>You Shall Not Pass</code>.'); }; ", "async () => { const waitForIt = (fn) => new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 250)); const mockedComponent = Enzyme.mount(React.createElement(CheckUserAge)); const initialButton = mockedComponent.find('button').text(); const enter18AndClickButton = () => { mockedComponent.find('input').simulate('change', {target: { value: 18 }}); mockedComponent.find('button').simulate('click'); return waitForIt(() => { mockedComponent.update(); return mockedComponent.find('button').text(); }); }; const enter35AndClickButton = () => { mockedComponent.find('input').simulate('change', {target: { value: 35 }}); mockedComponent.find('button').simulate('click'); return waitForIt(() => { mockedComponent.update(); return mockedComponent.find('button').text(); }); }; const userAge18 = await enter18AndClickButton(); const userAge35 = await enter35AndClickButton(); assert(initialButton === 'Submit' && userAge18 === 'You May Enter' && userAge35 === 'You May Enter', 'message: When a number greater than or equal to 18 is entered into the <code>input</code> element and the <code>button</code> is clicked, the <code>button</code>&apos;s inner text should read <code>You May Enter</code>.'); }; ", "async () => { const waitForIt = (fn) => new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 250)); const mockedComponent = Enzyme.mount(React.createElement(CheckUserAge)); const enter18AndClickButton = () => { mockedComponent.find('input').simulate('change', {target: { value: 18 }}); mockedComponent.find('button').simulate('click'); return waitForIt(() => { mockedComponent.update(); return mockedComponent.find('button').text(); }); }; const changeInputDontClickButton = () => { mockedComponent.find('input').simulate('change', {target: { value: 5 }}); return waitForIt(() => { mockedComponent.update(); return mockedComponent.find('button').text(); }); }; const enter10AndClickButton = () => { mockedComponent.find('input').simulate('change', {target: { value: 10 }}); mockedComponent.find('button').simulate('click'); return waitForIt(() => { mockedComponent.update(); return mockedComponent.find('button').text(); }); }; const userAge18 = await enter18AndClickButton(); const changeInput1 = await changeInputDontClickButton(); const userAge10 = await enter10AndClickButton(); const changeInput2 = await changeInputDontClickButton(); assert(userAge18 === 'You May Enter' && changeInput1 === 'Submit' && userAge10 === 'You Shall Not Pass' && changeInput2 === 'Submit', 'message: Once a number has been submitted, and the value of the <code>input</code> is once again changed, the <code>button</code> should return to reading <code>Submit</code>.'); }; ", </del> <ins> "async () => { const waitForIt = (fn) => new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 250)); const mockedComponent = Enzyme.mount(React.createElement(CheckUserAge)); const initialButton = mockedComponent.find('button').text(); const enter3AndClickButton = () => { mockedComponent.find('input').simulate('change', {target: { value: '3' }}); mockedComponent.find('button').simulate('click'); return waitForIt(() => { mockedComponent.update(); return mockedComponent.find('button').text(); }); }; const enter17AndClickButton = () => { mockedComponent.find('input').simulate('change', {target: { value: '17' }}); mockedComponent.find('button').simulate('click'); return waitForIt(() => { mockedComponent.update(); return mockedComponent.find('button').text(); }); }; const userAge3 = await enter3AndClickButton(); const userAge17 = await enter17AndClickButton(); assert(initialButton === 'Submit' && userAge3 === 'You Shall Not Pass' && userAge17 === 'You Shall Not Pass', 'message: When a number of less than 18 is entered into the <code>input</code> element and the <code>button</code> is clicked, the <code>button</code>&apos;s inner text should read <code>You Shall Not Pass</code>.'); }; ", "async () => { const waitForIt = (fn) => new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 250)); const mockedComponent = Enzyme.mount(React.createElement(CheckUserAge)); const initialButton = mockedComponent.find('button').text(); const enter18AndClickButton = () => { mockedComponent.find('input').simulate('change', {target: { value: '18' }}); mockedComponent.find('button').simulate('click'); return waitForIt(() => { mockedComponent.update(); return mockedComponent.find('button').text(); }); }; const enter35AndClickButton = () => { mockedComponent.find('input').simulate('change', {target: { value: '35' }}); mockedComponent.find('button').simulate('click'); return waitForIt(() => { mockedComponent.update(); return mockedComponent.find('button').text(); }); }; const userAge18 = await enter18AndClickButton(); const userAge35 = await enter35AndClickButton(); assert(initialButton === 'Submit' && userAge18 === 'You May Enter' && userAge35 === 'You May Enter', 'message: When a number greater than or equal to 18 is entered into the <code>input</code> element and the <code>button</code> is clicked, the <code>button</code>&apos;s inner text should read <code>You May Enter</code>.'); }; ", "async () => { const waitForIt = (fn) => new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 250)); const mockedComponent = Enzyme.mount(React.createElement(CheckUserAge)); const enter18AndClickButton = () => { mockedComponent.find('input').simulate('change', {target: { value: '18' }}); mockedComponent.find('button').simulate('click'); return waitForIt(() => { mockedComponent.update(); return mockedComponent.find('button').text(); }); }; const changeInputDontClickButton = () => { mockedComponent.find('input').simulate('change', {target: { value: '5' }}); return waitForIt(() => { mockedComponent.update(); return mockedComponent.find('button').text(); }); }; const enter10AndClickButton = () => { mockedComponent.find('input').simulate('change', {target: { value: '10' }}); mockedComponent.find('button').simulate('click'); return waitForIt(() => { mockedComponent.update(); return mockedComponent.find('button').text(); }); }; const userAge18 = await enter18AndClickButton(); const changeInput1 = await changeInputDontClickButton(); const userAge10 = await enter10AndClickButton(); const changeInput2 = await changeInputDontClickButton(); assert(userAge18 === 'You May Enter' && changeInput1 === 'Submit' && userAge10 === 'You Shall Not Pass' && changeInput2 === 'Submit', 'message: Once a number has been submitted, and the value of the <code>input</code> is once again changed, the <code>button</code> should return to reading <code>Submit</code>.'); }; ", </ins> "assert(new RegExp(/(s|;)if(s|()/).test(Enzyme.mount(React.createElement(CheckUserAge)).instance().render.toString()) === false, 'message: Your code should not contain any <code>if/else</code> statements.');" ], "solutions": [

Related discussion:
text: <!-- freeCodeCamp Issue Template --<!-- Please provide as much detail as possible for us to fix your issue --<!-- Remove any heading sections you did not fill out --<!-- NOTE: If your issue is CodePen Project / Test Suite related, please open it using the below URL instead --<!-- --<!-- Insert link to challenge below -- <!-- Describe below when the issue happens and how to reproduce it --Correct solution doesn't pass. Behavior of "Preview" page matches challenge description but these tests don't pass: When a number of less than 18 is entered into the input element and the button is clicked, the button's inner text should read You Shall Not Pass. }; When a number greater than or equal to 18 is entered into the input element and the button is clicked, the button's inner text should read You May Enter. }; Once a number has been submitted, and the value of the input is once again changed, the button should return to reading Submit. }; <!-- Describe your workspace in which you are having issues--Browser Name, Version: Chrome, Version 64.0.3282.140 (Official Build) (64-bit) Operating System: Windows 10 Mobile, Desktop, or Tablet: Desktop <!-- If relevant, paste all of your challenge code in here --<!-- Add a screenshot of your issue --<img width="422" alt="react-use-a-ternary-expression-for-conditional-rendering" src="https://user-"
The bug seems to come from the first boolean, . An alternative to checking a string's emptiness——works fine. I'm guessing that at some point during the tests, is not actually a string. For instance, if at some point becomes a (which does not have the attribute) then we're in trouble.
Found the bug: as predicted, there was a and mix-up. In the tests, the values sent into the input element are numbers, making undefined and failing the tests. These tests should not be sending numbers into input elements. As written in the MDN web docs for , the attribute of the Input Element in HTML is always of type String. Yet, the in the challenge has , so shouldn't the user still account for this? The MDN web docs say otherwise: Notice that the type attribute only alters the "type of control to display".