util: refactor tests for ArrayReverse

pkg/util/array_test.go

@@ -6,24 +6,31 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-func TestArrayEvenReverse(t *testing.T) {
-	arr := []byte{0x01, 0x02, 0x03, 0x04}
-	have := ArrayReverse(arr)
-	want := []byte{0x04, 0x03, 0x02, 0x01}
-	require.Equal(t, want, have)
+var testCases = []struct {
+	arr []byte
+	rev []byte
+}{
+	{
+		arr: []byte{},
+		rev: []byte{},
+	},
+	{
+		arr: []byte{0x01},
+		rev: []byte{0x01},
+	},
+	{
+		arr: []byte{0x01, 0x02, 0x03, 0x04},
+		rev: []byte{0x04, 0x03, 0x02, 0x01},
+	},
+	{
+		arr: []byte{0x01, 0x02, 0x03, 0x04, 0x05},
+		rev: []byte{0x05, 0x04, 0x03, 0x02, 0x01},
+	},
 }
 
-func TestArrayOddReverse(t *testing.T) {
-	arr := []byte{0x01, 0x02, 0x03, 0x04, 0x05}
-	have := ArrayReverse(arr)
-	want := []byte{0x05, 0x04, 0x03, 0x02, 0x01}
-	require.Equal(t, want, have)
-}
-
-// This tests a bug that occurred with arrays of size 1
-func TestArrayReverseLen2(t *testing.T) {
-	arr := []byte{0x01}
-	have := ArrayReverse(arr)
-	want := []byte{0x01}
-	require.Equal(t, want, have)
+func TestArrayReverse(t *testing.T) {
+	for _, tc := range testCases {
+		have := ArrayReverse(tc.arr)
+		require.Equal(t, tc.rev, have)
+	}
 }