add simple test

Author: javydevx

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v4
         with:
-          go-version: '1.20'
+          go-version: '1.24'
 
       - name: Cache Go modules
         uses: actions/cache@v3

go.mod

@@ -1,3 +1,3 @@
 module github.com/javy99/problem-solving-golang
 
-go 1.24.2
+go 1.24

main/hello.go

@@ -0,0 +1,5 @@
+package main
+
+func Hello() string {
+	return "Hello, world!"
+}

main/hello_test.go

@@ -0,0 +1,11 @@
+package main
+
+import "testing"
+
+func TestHello(t *testing.T) {
+	expected := "Hello, world!"
+	got := Hello()
+	if got != expected {
+		t.Errorf("Hello() = %q; want %q", got, expected)
+	}
+}