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Pre: Add multistep upsert example.

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Nick Alexander 2016-10-05 20:51:46 -07:00
parent bc011bbf43
commit d94dfae01b
1 changed files with 18 additions and 0 deletions
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18
test/datomish/db_test.cljc
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@ -214,6 +214,24 @@
[:db/add (d/id-literal :db.part/user -1) :name "Petr"]
[:db/add (d/id-literal :db.part/user -1) :age 36]])))))))
(deftest-db test-multistep-upsert conn
(<? (d/<transact! conn test-schema))
;; The upsert algorithm will first try to resolve -1, fail, and then allocate both -1 and -2.
(let [tx0 (<? (d/<transact! conn [{:db/id (d/id-literal :db.part/user -1) :name "Ivan" :email "@1"}
{:db/id (d/id-literal :db.part/user -2) :name "Petr" :friends (d/id-literal :db.part/user -1)}]))]
;; Sanity checks that these are freshly allocated, not resolved.
(is (> (get (tempids tx0) -1) 1000))
(is (> (get (tempids tx0) -1) 1000))
;; This time, we can resolve both, but we have to try -1, succeed, and then resolve -2.
(let [tx1 (<? (d/<transact! conn [{:db/id (d/id-literal :db.part/user -1) :name "Ivan" :email "@1"}
{:db/id (d/id-literal :db.part/user -2) :name "Petr" :friends (d/id-literal :db.part/user -1)}]))]
;; Ensure these are resolved, not freshly allocated.
(is (= (tempids tx0)
(tempids tx1))))))
(deftest-db test-map-upsert conn
;; Not having DB-as-value really hurts us here. This test only works because all upserts
;; succeed on top of each other, so we never need to reset the underlying store.