A small library to ease testing with Datomic and (optionally) conformity.
;; If you are using datomic pro, exclude the datomic free dep!
:dependencies [[com.yetanalytics/testomic "0.1.0"
:exclusions [com.datomic/datomic-free]]]
For a fresh conn that will be automatically released/deleted:
(require '[testomic.core :refer :all])
(with-conn foo
(type foo)) ;; => datomic.peer.LocalConnection
For a conn with data transacted in, can bind values like let:
(with-conn foo
(let-txs [;; first binding/tx
[[op1 eid1 attr1 val1] :as tx1]
[[:db/add (d/tempid :db.part/user) :person/name "Bob"]]
;; second binding/tx
[[op2 eid2 attr2 val2] :as tx2]
[[:db/add (d/tempid :db.part/user) :person/name "Alice"]]]
;; accepts multiple transactions
(d/q '[:find ?name
:where
[_ :person/name ?name]]
(d/db foo)) ;; => #{["Bob"] ["Alice"]}
;; resolves-tempids
(:person/name (d/entity (d/db foo) eid1)) ;; => "Bob"
(:person/name (d/entity (d/db foo) eid2)) ;; => "Alice"
;; will not override a conn if nested!
(let-txs [tx3 [[:db/add (d/tempid :db.part/user) :person/name "Ethel"]]]
(d/q '[:find (count ?person) .
:where
[?person :person/name]] (d/db foo)) ;; => 3
)))
If fixtures are your thing, you can use wrap-conn and make-wrap-txs-fixture to reduce code.
You can use the dynamic variable testomic.core/conn in test functions using the fixtures.
If you want to provide a schema to be automatically applied to the conn, you can use conformity to do so in a number of different ways:
(set-norms! {:norm/foo ...}) ;; statically set the norms map to be used
(set-norms-path! "test/norms.edn") ;; same, but from file
(with-norms {:norm/foo ...} ;; bind a norms map
(with-conn ...))
(with-norms-path "test/norms.edn"
(with-conn ...)) ;; same, from file
;; or use fixtures
(use-fixtures :once (make-wrap-norms-fixture {:norm/foo ...}))
(use-fixtures :once (make-wrap-norms-path-fixture "test/norms.edn"))
Copyright © 2016 Yet Analytics, Inc.
Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.