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GSet ported to delta-CRDT (#22187)

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This commit is contained in:
gosubpl 2017-01-26 14:26:25 +01:00
parent 5ffb08cd78
commit d470321051
5 changed files with 80 additions and 20 deletions
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56
akka-distributed-data/src/test/scala/akka/cluster/ddata/GSetSpec.scala
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@ -39,8 +39,7 @@ class GSetSpec extends WordSpec with Matchers {
val c12 = c11 + user1
val c13 = c12 + user2
c13.elements should contain(user1)
c13.elements should contain(user2)
c13.elements should ===(Set(user1, user2))
// set 2
val c21 = GSet.empty[String]
@ -48,21 +47,54 @@ class GSetSpec extends WordSpec with Matchers {
val c22 = c21 + user3
val c23 = c22 + user4
c23.elements should contain(user3)
c23.elements should contain(user4)
c23.elements should ===(Set(user3, user4))
// merge both ways
val merged1 = c13 merge c23
merged1.elements should contain(user1)
merged1.elements should contain(user2)
merged1.elements should contain(user3)
merged1.elements should contain(user4)
merged1.elements should ===(Set(user1, user2, user3, user4))
val merged2 = c23 merge c13
merged2.elements should contain(user1)
merged2.elements should contain(user2)
merged2.elements should contain(user3)
merged2.elements should contain(user4)
merged2.elements should ===(Set(user1, user2, user3, user4))
}
"be able to work with deltas" in {
// set 1
val c11 = GSet.empty[String]
val c12 = c11 + user1
val c13 = c12 + user2
c12.delta.elements should ===(Set(user1))
c13.delta.elements should ===(Set(user1, user2))
// deltas build state
(c12 merge c13.delta) should ===(c13)
// own deltas are idempotent
(c13 merge c13.delta) should ===(c13)
// set 2
val c21 = GSet.empty[String]
val c22 = c21 + user3
val c23 = c22.resetDelta + user4
c22.delta.elements should ===(Set(user3))
c23.delta.elements should ===(Set(user4))
c23.elements should ===(Set(user3, user4))
val c33 = c13 merge c23
// merge both ways
val merged1 = GSet.empty[String] merge c12.delta merge c13.delta merge c22.delta merge c23.delta
merged1.elements should ===(Set(user1, user2, user3, user4))
val merged2 = GSet.empty[String] merge c23.delta merge c13.delta merge c22.delta
merged2.elements should ===(Set(user1, user2, user3, user4))
merged1 should ===(c33)
merged2 should ===(c33)
}
"be able to have its user set correctly merged with another GSet with overlapping user sets" in {