1package dag
 2
 3import (
 4	"testing"
 5
 6	"github.com/stretchr/testify/require"
 7)
 8
 9func TestWriteRead(t *testing.T) {
10	repo, id1, id2, def := makeTestContext()
11
12	entity := New(def)
13	require.False(t, entity.NeedCommit())
14
15	entity.Append(newOp1(id1, "foo"))
16	entity.Append(newOp2(id1, "bar"))
17
18	require.True(t, entity.NeedCommit())
19	require.NoError(t, entity.CommitAdNeeded(repo))
20	require.False(t, entity.NeedCommit())
21
22	entity.Append(newOp2(id2, "foobar"))
23	require.True(t, entity.NeedCommit())
24	require.NoError(t, entity.CommitAdNeeded(repo))
25	require.False(t, entity.NeedCommit())
26
27	read, err := Read(def, repo, entity.Id())
28	require.NoError(t, err)
29
30	assertEqualEntities(t, entity, read)
31}
32
33func assertEqualEntities(t *testing.T, a, b *Entity) {
34	// testify doesn't support comparing functions and systematically fail if they are not nil
35	// so we have to set them to nil temporarily
36
37	backOpUnA := a.Definition.operationUnmarshaler
38	backOpUnB := b.Definition.operationUnmarshaler
39
40	a.Definition.operationUnmarshaler = nil
41	b.Definition.operationUnmarshaler = nil
42
43	backIdResA := a.Definition.identityResolver
44	backIdResB := b.Definition.identityResolver
45
46	a.Definition.identityResolver = nil
47	b.Definition.identityResolver = nil
48
49	defer func() {
50		a.Definition.operationUnmarshaler = backOpUnA
51		b.Definition.operationUnmarshaler = backOpUnB
52		a.Definition.identityResolver = backIdResA
53		b.Definition.identityResolver = backIdResB
54	}()
55
56	require.Equal(t, a, b)
57}