Fix MCQ option 0 not showing hints (#329)

* Fix MCQ option 0 not displaying intent and hints

Truthy check, 0 is false. T-T

* Format file

* Keep one mock data as option 0

* Bump version

package.json

@@ -1,7 +1,7 @@
 {
  "private": true,
  "name": "cadet-frontend",
- "version": "1.0.4",
+ "version": "1.0.5",
  "scripts-info": {
  "format": "Format source code",
  "start": "Start the Webpack development server",

src/components/workspace/MCQChooser.tsx

@@ -60,7 +60,7 @@ class MCQChooser extends React.PureComponent<IMCQChooserProps, State> {
  mcqOption: i
  })
  }
- const shouldDisplayMessage = this.props.mcq.solution && this.props.mcq.choices[i].hint
+ const shouldDisplayMessage = this.props.mcq.solution !== null && this.props.mcq.choices[i].hint
  if (shouldDisplayMessage) {
  const hintElement = <Markdown content={this.props.mcq.choices[i].hint!} />
  if (i === this.props.mcq.solution) {
@@ -86,8 +86,8 @@ class MCQChooser extends React.PureComponent<IMCQChooserProps, State> {
  solution: number | null
  ): Intent => {
  const active = currentOption === chosenOption
- const correctOptionSelected = active && solution && currentOption === solution
- if (!solution) {
+ const correctOptionSelected = active && solution !== null && currentOption === solution
+ if (solution === null) {
  return Intent.NONE
  } else if (active && correctOptionSelected) {
  return Intent.SUCCESS

src/mocks/assessmentAPI.ts

@@ -213,7 +213,7 @@ What's your favourite dinner food?
  id: 2,
  library: mockCurveLibrary,
  type: 'mcq',
- solution: 2
+ solution: 0
  },
  {
  answer: 3,