Thermostat should be a class with a defined constructor method.");'
- text: ''
testString: 'getUserInput => assert(getUserInput("index").match(/class/g),"class keyword was used.");'
- text: ''
testString: 'assert(() => {const t = new Thermostat(32); return typeof t === "object" && t.temperature === 0;}, "Thermostat can be instantiated.");'
```