Finish warm-up quiz + add missing }) syntax to line 820

Author: elPiablo

pages/lessons/projects/4.mdx

@@ -817,6 +817,7 @@ Ok, here are some tests for these helpers!
     it('should error if token does not exist', async function () {
       await expect(contract.tokenURI(0)).to.be.revertedWith('Nonexistent token')
     })
+  })
 
     describe('tierNameOf', async function () {
       it('should return proper tier name for Tier 0', async function () {

utils/questions/lesson-4/1-intro/Q1.json

@@ -1,22 +1,19 @@
 {
-  "question": "",
+  "question": "Choose the reasons for using automated tests:",
   "options": [
     {
-      "answer": "",
+      "answer": "Give us insurance if we upgrade code later ",
       "correct": true
     },
     {
-      "answer": ""
+      "answer": "So we don’t have to use manual tests"
     },
     {
-      "answer": "",
+      "answer": "Give us the chance to utilise code modularly",
       "correct": true
     },
     {
-      "answer": ""
-    },
-    {
-      "answer": ""
+      "answer": "All of the above"
     }
   ]
 }

utils/questions/lesson-4/1-intro/Q2.json

@@ -1,15 +1,17 @@
 {
-  "question": "Choose reasons for using automated tests:",
+  "question": "What is the role of a Testnet in smart contract development?",
   "options": [
     {
-      "answer": "Give us insurance if we upgrade code later ",
-      "correct": true
+      "answer": "It helps to deploy smart contracts to the Ethereum mainnet."
+    },
+    {
+      "answer": "To airdrop free Ether to devs because testing gets the eco-system a good name."
     },
     {
-      "answer": "So we don’t have to use manual tests"
+      "answer": "It's used to interact with smart contracts using that real Ether."
     },
     {
-      "answer": "Give us the chance to utilise code modularly",
+      "answer": "It's a network that is used for testing smart contracts.",
       "correct": true
     }
   ]

utils/questions/lesson-4/1-intro/Q3.json

@@ -1,18 +1,18 @@
 {
-  "question": "What do you imagine one of the first steps is in this lesson?",
+  "question": "What is the purpose of the 'require' statement in Solidity?",
   "options": [
     {
-      "answer": "Add your private key to the .gitignore file!"
+      "answer": "For specifying the visibility of a variable or function."
     },
     {
-      "answer": "Harmonise Solidity versions across the project",
-      "correct": true
+      "answer": "To be able to easily define a new modifier in the contract whenever we need it."
     },
     {
-      "answer": "Add a new line of code to the contract to signal we can test it"
+      "answer": "For declaring a new function in the contract."
     },
     {
-      "answer": "Add a console.log line to the contract code so we can see the output of the tests"
+      "answer": "To perform a conditional check, and revert the transaction if it fails.",
+      "correct": true
     }
   ]
 }

utils/questions/lesson-4/1-intro/Q4.json

@@ -1,22 +1,18 @@
 {
-  "question": "",
+  "question": "When writing unit tests for a smart contract, what should we be testing?",
   "options": [
     {
-      "answer": "",
-      "correct": true
+      "answer": "Functionality that only involves external contracts."
     },
     {
-      "answer": ""
+      "answer": "Only private functions that aren't externally accessible."
     },
     {
-      "answer": "",
+      "answer": "All functions and possible edge cases that the contract may encounter.",
       "correct": true
     },
     {
-      "answer": ""
-    },
-    {
-      "answer": ""
+      "answer": "Just the constructor function to ensure the contract gets deployed properly."
     }
   ]
 }

utils/questions/lesson-4/1-intro/Q5.json

@@ -1,22 +1,18 @@
 {
-  "question": "",
+  "question": "What do you imagine one of the first steps is in this lesson?",
   "options": [
     {
-      "answer": "",
-      "correct": true
-    },
-    {
-      "answer": ""
+      "answer": "To add your private key to the .gitignore file!"
     },
     {
-      "answer": "",
+      "answer": "To harmonise Solidity versions across the project",
       "correct": true
     },
     {
-      "answer": ""
+      "answer": "To make sure to add an extra line of code to the contract to signal to Hardhat that we can test it"
     },
     {
-      "answer": ""
+      "answer": "To create a console.log line to the contract code so we can see the output of the tests"
     }
   ]
 }