chore: add tests for SplitStringIntoChunks

pkg/utils/utils_test.go

@@ -2,6 +2,7 @@ package utils
 
 import (
 	"main/pkg/constants"
+	"math/rand"
 	"net/http"
 	"testing"
 	"time"
@@ -11,6 +12,16 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
+func StringOfRandomLength(n int) string {
+	var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
+
+	b := make([]rune, n)
+	for i := range b {
+		b[i] = letters[rand.Intn(len(letters))]
+	}
+	return string(b)
+}
+
 func TestFilter(t *testing.T) {
 	t.Parallel()
 
@@ -111,3 +122,28 @@ func TestMustMarshallValid(t *testing.T) {
 	content := MustMarshal(str)
 	assert.Equal(t, []byte("\"test\""), content)
 }
+
+func TestSplitStringIntoChunksLessThanOneChunk(t *testing.T) {
+	t.Parallel()
+
+	str := StringOfRandomLength(10)
+	chunks := SplitStringIntoChunks(str, 20)
+	assert.Len(t, chunks, 1, "There should be 1 chunk!")
+}
+
+func TestSplitStringIntoChunksExactlyOneChunk(t *testing.T) {
+	t.Parallel()
+
+	str := StringOfRandomLength(10)
+	chunks := SplitStringIntoChunks(str, 10)
+
+	assert.Len(t, chunks, 1, "There should be 1 chunk!")
+}
+
+func TestSplitStringIntoChunksMoreChunks(t *testing.T) {
+	t.Parallel()
+
+	str := "aaaa\nbbbb\ncccc\ndddd\neeeee\n"
+	chunks := SplitStringIntoChunks(str, 10)
+	assert.Len(t, chunks, 3, "There should be 3 chunks!")
+}