[{:test/label ":db.cardinality/one, insert"
  :test/assertions
  [[:db/add 100 :db/ident :keyword/value1]
   [:db/add 101 :db/ident :keyword/value2]]
  :test/expected-transaction
  #{[100 :db/ident :keyword/value1 ?tx1 true]
    [101 :db/ident :keyword/value2 ?tx1 true]
    [?tx1 :db/txInstant ?ms1 ?tx1 true]}
  :test/expected-datoms
  #{[100 :db/ident :keyword/value1]
    [101 :db/ident :keyword/value2]}}

 {:test/label ":db.cardinality/many, insert"
  :test/assertions
  [[:db/add 200 :db.schema/attribute 100]
   [:db/add 200 :db.schema/attribute 101]]
  :test/expected-transaction
  #{[200 :db.schema/attribute 100 ?tx2 true]
    [200 :db.schema/attribute 101 ?tx2 true]
    [?tx2 :db/txInstant ?ms2 ?tx2 true]}
  :test/expected-datoms
  #{[100 :db/ident :keyword/value1]
    [101 :db/ident :keyword/value2]
    [200 :db.schema/attribute 100]
    [200 :db.schema/attribute 101]}}

 {:test/label ":db.cardinality/one, retract"
  :test/assertions
  [[:db/retract 100 :db/ident :keyword/value1]]
  :test/expected-transaction
  #{[100 :db/ident :keyword/value1 ?tx3 false]
    [?tx3 :db/txInstant ?ms3 ?tx3 true]}
  :test/expected-datoms
  #{[101 :db/ident :keyword/value2]
    [200 :db.schema/attribute 100]
    [200 :db.schema/attribute 101]}}

 {:test/label ":db.cardinality/many, retract"
  :test/assertions
  [[:db/retract 200 :db.schema/attribute 100]]
  :test/expected-transaction
  #{[200 :db.schema/attribute 100 ?tx4 false]
    [?tx4 :db/txInstant ?ms4 ?tx4 true]}
  :test/expected-datoms
  #{[101 :db/ident :keyword/value2]
    [200 :db.schema/attribute 101]}
  }

 {:test/label ":db.cardinality/{one,many}, not present."
  :test/assertions
  [[:db/retract 100 :db/ident :keyword/value1]
   [:db/retract 200 :db.schema/attribute 100]]
  :test/expected-transaction
  #{[?tx5 :db/txInstant ?ms5 ?tx5 true]}
  :test/expected-datoms
  #{[101 :db/ident :keyword/value2]
    [200 :db.schema/attribute 101]}
  }
 ]