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|
package dag
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestWriteRead(t *testing.T) {
repo, id1, id2, def := makeTestContext()
entity := New(def)
require.False(t, entity.NeedCommit())
entity.Append(newOp1(id1, "foo"))
entity.Append(newOp2(id1, "bar"))
require.True(t, entity.NeedCommit())
require.NoError(t, entity.CommitAdNeeded(repo))
require.False(t, entity.NeedCommit())
entity.Append(newOp2(id2, "foobar"))
require.True(t, entity.NeedCommit())
require.NoError(t, entity.CommitAdNeeded(repo))
require.False(t, entity.NeedCommit())
read, err := Read(def, repo, entity.Id())
require.NoError(t, err)
assertEqualEntities(t, entity, read)
}
func assertEqualEntities(t *testing.T, a, b *Entity) {
// testify doesn't support comparing functions and systematically fail if they are not nil
// so we have to set them to nil temporarily
backOpUnA := a.Definition.operationUnmarshaler
backOpUnB := b.Definition.operationUnmarshaler
a.Definition.operationUnmarshaler = nil
b.Definition.operationUnmarshaler = nil
backIdResA := a.Definition.identityResolver
backIdResB := b.Definition.identityResolver
a.Definition.identityResolver = nil
b.Definition.identityResolver = nil
defer func() {
a.Definition.operationUnmarshaler = backOpUnA
b.Definition.operationUnmarshaler = backOpUnB
a.Definition.identityResolver = backIdResA
b.Definition.identityResolver = backIdResB
}()
require.Equal(t, a, b)
}
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