data: split node and snapshot code from restic package

internal/data/node_test.go

@@ -0,0 +1,95 @@
+package data
+
+import (
+	"encoding/json"
+	"testing"
+	"time"
+
+	"github.com/restic/restic/internal/test"
+)
+
+func parseTimeNano(t testing.TB, s string) time.Time {
+	// 2006-01-02T15:04:05.999999999Z07:00
+	ts, err := time.Parse(time.RFC3339Nano, s)
+	if err != nil {
+		t.Fatalf("error parsing %q: %v", s, err)
+	}
+	return ts
+}
+
+func TestFixTime(t *testing.T) {
+	// load UTC location
+	utc, err := time.LoadLocation("")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	var tests = []struct {
+		src, want time.Time
+	}{
+		{
+			src:  parseTimeNano(t, "2006-01-02T15:04:05.999999999+07:00"),
+			want: parseTimeNano(t, "2006-01-02T15:04:05.999999999+07:00"),
+		},
+		{
+			src:  time.Date(0, 1, 2, 3, 4, 5, 6, utc),
+			want: parseTimeNano(t, "0000-01-02T03:04:05.000000006+00:00"),
+		},
+		{
+			src:  time.Date(-2, 1, 2, 3, 4, 5, 6, utc),
+			want: parseTimeNano(t, "0000-01-02T03:04:05.000000006+00:00"),
+		},
+		{
+			src:  time.Date(12345, 1, 2, 3, 4, 5, 6, utc),
+			want: parseTimeNano(t, "9999-01-02T03:04:05.000000006+00:00"),
+		},
+		{
+			src:  time.Date(9999, 1, 2, 3, 4, 5, 6, utc),
+			want: parseTimeNano(t, "9999-01-02T03:04:05.000000006+00:00"),
+		},
+	}
+
+	for _, test := range tests {
+		t.Run("", func(t *testing.T) {
+			res := FixTime(test.src)
+			if !res.Equal(test.want) {
+				t.Fatalf("wrong result for %v, want:\n  %v\ngot:\n  %v", test.src, test.want, res)
+			}
+		})
+	}
+}
+
+func TestSymlinkSerialization(t *testing.T) {
+	for _, link := range []string{
+		"válîd \t Üñi¢òde \n śẗŕinǵ",
+		string([]byte{0, 1, 2, 0xfa, 0xfb, 0xfc}),
+	} {
+		n := Node{
+			LinkTarget: link,
+		}
+		ser, err := json.Marshal(n)
+		test.OK(t, err)
+		var n2 Node
+		err = json.Unmarshal(ser, &n2)
+		test.OK(t, err)
+		t.Logf("serialized %q\n", string(ser))
+
+		test.Equals(t, n.LinkTarget, n2.LinkTarget)
+	}
+}
+
+func TestSymlinkSerializationFormat(t *testing.T) {
+	for _, d := range []struct {
+		ser        string
+		linkTarget string
+	}{
+		{`{"linktarget":"test"}`, "test"},
+		{`{"linktarget":"\u0000\u0001\u0002\ufffd\ufffd\ufffd","linktarget_raw":"AAEC+vv8"}`, string([]byte{0, 1, 2, 0xfa, 0xfb, 0xfc})},
+	} {
+		var n2 Node
+		err := json.Unmarshal([]byte(d.ser), &n2)
+		test.OK(t, err)
+		test.Equals(t, d.linkTarget, n2.LinkTarget)
+		test.Assert(t, n2.LinkTargetRaw == nil, "quoted link target is just a helper field and must be unset after decoding")
+	}
+}