test remove from slice

remove.go

@@ -1,5 +1,10 @@
 package goutils
 
+// RemoveElementFromArray does just that, if an index is passed in
+// that is larger than the slice length then the original slice is returned.
 func RemoveElementFromArray[T any](slice []T, s int) []T {
+	if s >= len(slice) {
+		return slice
+	}
 	return append(slice[:s], slice[s+1:]...)
 }

remove_test.go

@@ -0,0 +1,31 @@
+package goutils
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestRemoveElementFromArray(t *testing.T) {
+	t.Parallel()
+
+	var testArr = make([]int, 10)
+	for i := 0; i < 10; i++ {
+		testArr[i] = i
+	}
+
+	testArr = RemoveElementFromArray(testArr, 5)
+	assert.Equal(t, 9, len(testArr))
+	for i := 0; i < 9; i++ {
+		assert.False(t, testArr[i] == 5)
+	}
+
+	testArr = RemoveElementFromArray(testArr, 1)
+	assert.Equal(t, 8, len(testArr))
+	for i := 0; i < 8; i++ {
+		assert.False(t, testArr[i] == 1)
+	}
+
+	testArr = RemoveElementFromArray(testArr, 10)
+	assert.Equal(t, 8, len(testArr))
+}