test: implement test for JustCounter contract

test/JustCounter.js

@@ -1,6 +1,8 @@
+// Import necessary modules and libraries
 const { loadFixture } = require("@nomicfoundation/hardhat-network-helpers");
 const { expect } = require("chai");
 
+// Test suite for the JustCounter contract
 describe("JustCounter Test Suite", function () {
     // define loadFixture
     // fixtures can return anything you consider useful for your tests
@@ -10,21 +12,27 @@ describe("JustCounter Test Suite", function () {
         return { JustCounter, owner, addr1, addr2 };
     }
 
-    describe("Post Deployment State Variables", async () => {
+	// Test for pre-deployment
+    describe("Pre-Deployment State Variables", async () => {
         it("Should return state variables", async () => {
             const { JustCounter } = await loadFixture(deployTokenFixture);
             expect(await JustCounter.count()).to.equal(0);
             expect(await JustCounter.underCount()).to.equal(0);
         })
     })
 
+	// test for post deployment state variables
     describe.only("State Variables Changes", async () => {
+
+		let amount = 5
+		let count1 = 0
+
         it("Should store number", async () => {
-            let amount = 5
+            // let amount = 5
             // get loadFixture variables
             const { JustCounter } = await loadFixture(deployTokenFixture);
             // get current state variable count
-            let count1 = await JustCounter.count()
+            count1 = await JustCounter.count()
             console.log("count before state change___", count1)
             // write assertion statement for count1
             expect(count1).to.equal(0);
@@ -35,8 +43,72 @@ describe("JustCounter Test Suite", function () {
             // write assertion statement for count after store txn
             expect(count2).to.equal(amount);
         })
-    })
 
+		// Test for retrieve number from state
+		it ("Should retrieve number", async () => {
+
+			const { JustCounter } = await loadFixture(deployTokenFixture);
+
+			await JustCounter.store(amount)
+			let count2 = await JustCounter.retrieve()
+			expect(count2).to.equal(amount);
+		})
+
+		// Test for increament of count by one
+		it ("Should increase count by one", async () => {
+
+			const { JustCounter } = await loadFixture(deployTokenFixture);
+
+			await JustCounter.store(amount)
+			await JustCounter.increaseCount()
+			let count3 = await JustCounter.retrieve()
+			expect(count3).to.equal(amount + 1);
+		})
+
+		// Test for decreament by one
+		it ("Should decrease count by one", async () => {
+			const { JustCounter } = await loadFixture(deployTokenFixture);
 
+			await JustCounter.store(amount)
+			await JustCounter.decreaseCount()
+			let counts = await JustCounter.retrieve()
+			expect(counts).to.equal(amount - 1);
+		})
 
+		// Test for even number checker
+		it ("Checks if number is even", async () => {
+			const { JustCounter } = await loadFixture(deployTokenFixture);
+
+			await JustCounter.store(amount)
+			let counts = await JustCounter.isCountEven()
+			expect(counts).to.equal(false);
+		})
+
+		// Test to get current value of undercount
+		it ("Gets the current value of undercount variable", async () => {
+			const { JustCounter } = await loadFixture(deployTokenFixture);
+
+			let count = await JustCounter.getUnderCount();
+			expect(count).to.equal(0)
+		})
+
+		// Test to increase undercount variable by one
+		it ("Increases Undercount variable by one", async () => {
+			const { JustCounter } = await loadFixture(deployTokenFixture);
+
+			await JustCounter.increaseUnderCount();
+			let counts = await JustCounter.getUnderCount();
+			expect(counts).to.equal(1);
+		})
+
+		// Test to decrease undercount by one
+		it ("Decrease Undercount variable by one", async () => {
+			const { JustCounter } = await loadFixture(deployTokenFixture);
+
+			await JustCounter.decreaseUnderCount();
+			let counts = await JustCounter.getUnderCount();
+			expect(counts).to.equal(-1);
+		})
+
+    })
 });