chore: import upstream snapshot with attribution

api/internal/randomstring/random_string_test.go

@@ -0,0 +1,67 @@
+package randomstring
+
+import (
+	"testing"
+
+	"github.com/portainer/portainer/pkg/fips"
+	"github.com/stretchr/testify/require"
+)
+
+func init() {
+	fips.InitFIPS(false)
+}
+
+func TestRandomString(t *testing.T) {
+	t.Parallel()
+	testCases := []struct {
+		name     string
+		length   int
+		expected int
+	}{
+		{
+			name:     "zero length",
+			length:   0,
+			expected: 0,
+		},
+		{
+			name:     "short string",
+			length:   5,
+			expected: 5,
+		},
+		{
+			name:     "longer string",
+			length:   20,
+			expected: 20,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			result := RandomString(tc.length)
+			require.Len(t, result, tc.expected)
+
+			// Verify all characters are from the expected alphabet
+			for _, char := range result {
+				require.Contains(t, letterBytes, string(char))
+			}
+		})
+	}
+}
+
+func TestRandomStringUniqueness(t *testing.T) {
+	t.Parallel()
+	// Generate multiple random strings and verify they are different
+	const numStrings = 100
+	const stringLength = 10
+
+	generated := make(map[string]bool)
+
+	for range numStrings {
+		str := RandomString(stringLength)
+		require.Len(t, str, stringLength)
+
+		// Check if we've seen this string before (very unlikely for random strings)
+		require.False(t, generated[str], "Generated duplicate random string: %s", str)
+		generated[str] = true
+	}
+}