homeworkStack
should only contain 4 elements.");'
- text: ''
testString: 'assert(homeworkStack[3] === "CS50", "The last element in homeworkStack
should be "CS50"
.");'
- text: ''
testString: 'assert(homeworkStack.indexOf("PSY44") === -1, "homeworkStack
should not contain "PSY44"
.");'
- text: ''
testString: 'assert(code.match(/=/g).length === 1 && /homeworkStack\s*=\s*\["BIO12"\s*,\s*"HIS80"\s*,\s*"MAT122"\s*,\s*"PSY44"\]/.test(code), "The initial declaration of the homeworkStack
should not be changed.");'
```