Adding upstream version 1.34.4.

Signed-off-by: Daniel Baumann <daniel@debian.org>

plugins/common/encoding/decoder_test.go

@@ -0,0 +1,78 @@
+package encoding
+
+import (
+	"bytes"
+	"io"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestDecoder(t *testing.T) {
+	tests := []struct {
+		name        string
+		encoding    string
+		input       []byte
+		expected    []byte
+		expectedErr bool
+	}{
+		{
+			name:     "no decoder utf-8",
+			encoding: "",
+			input:    []byte("howdy"),
+			expected: []byte("howdy"),
+		},
+		{
+			name:     "utf-8 decoder",
+			encoding: "utf-8",
+			input:    []byte("howdy"),
+			expected: []byte("howdy"),
+		},
+		{
+			name:     "utf-8 decoder invalid bytes replaced with replacement char",
+			encoding: "utf-8",
+			input:    []byte("\xff\xfe"),
+			expected: []byte("\uFFFD\uFFFD"),
+		},
+		{
+			name:     "utf-16le decoder no BOM",
+			encoding: "utf-16le",
+			input:    []byte("h\x00o\x00w\x00d\x00y\x00"),
+			expected: []byte("howdy"),
+		},
+		{
+			name:     "utf-16le decoder with BOM",
+			encoding: "utf-16le",
+			input:    []byte("\xff\xfeh\x00o\x00w\x00d\x00y\x00"),
+			expected: []byte("\xef\xbb\xbfhowdy"),
+		},
+		{
+			name:     "utf-16be decoder no BOM",
+			encoding: "utf-16be",
+			input:    []byte("\x00h\x00o\x00w\x00d\x00y"),
+			expected: []byte("howdy"),
+		},
+		{
+			name:     "utf-16be decoder with BOM",
+			encoding: "utf-16be",
+			input:    []byte("\xfe\xff\x00h\x00o\x00w\x00d\x00y"),
+			expected: []byte("\xef\xbb\xbfhowdy"),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			decoder, err := NewDecoder(tt.encoding)
+			require.NoError(t, err)
+			buf := bytes.NewBuffer(tt.input)
+			r := decoder.Reader(buf)
+			actual, err := io.ReadAll(r)
+			if tt.expectedErr {
+				require.Error(t, err)
+				return
+			}
+			require.NoError(t, err)
+			require.Equal(t, tt.expected, actual)
+		})
+	}
+}