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Tests/examples for the $pushAll modifier

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Also demonstrate a common mistake when $push is used instead of $pushAll with an
array value.
This commit is contained in:
Michael S. Klishin 2011-10-31 00:49:44 +04:00
parent 5dba219537
commit 6615c16675
1 changed files with 42 additions and 0 deletions
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42
test/monger/test/atomic_modifiers.clj
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@ -140,6 +140,18 @@
(is (= { :_id oid :title title :tags ["mongodb" "modifiers"] } (mgcol/find-map-by-id coll oid)))))
;; this is a common mistake, I leave it here to demonstrate it. You almost never
;; actually want to do this! What you really want is to use $pushAll instead of $push. MK.
(deftest add-array-value-to-an-existing-array-using-$push-modifier
(let [coll "docs"
oid (ObjectId.)
title "$push modifier appends value to field"]
(mgcol/insert coll { :_id oid :title title :tags ["mongodb"] })
(mgcol/update coll { :_id oid } { "$push" { :tags ["modifiers"] } })
(is (= { :_id oid :title title :tags ["mongodb" ["modifiers"]] } (mgcol/find-map-by-id coll oid)))))
(deftest double-add-value-to-an-existing-array-using-$push-modifier
(let [coll "docs"
oid (ObjectId.)
@ -148,3 +160,33 @@
(mgcol/update coll { :_id oid } { "$push" { :tags "modifiers" } })
(mgcol/update coll { :_id oid } { "$push" { :tags "modifiers" } })
(is (= { :_id oid :title title :tags ["mongodb" "modifiers" "modifiers"] } (mgcol/find-map-by-id coll oid)))))
;;
;; $pushAll
;;
(deftest initialize-an-array-using-$pushAll-modifier
(let [coll "docs"
oid (ObjectId.)
title "$pushAll modifier appends multiple values to field"]
(mgcol/insert coll { :_id oid :title title })
(mgcol/update coll { :_id oid } { "$pushAll" { :tags ["mongodb" "docs"] } })
(is (= { :_id oid :title title :tags ["mongodb" "docs"] } (mgcol/find-map-by-id coll oid)))))
(deftest add-value-to-an-existing-array-using-$pushAll-modifier
(let [coll "docs"
oid (ObjectId.)
title "$pushAll modifier appends multiple values to field"]
(mgcol/insert coll { :_id oid :title title :tags ["mongodb"] })
(mgcol/update coll { :_id oid } { "$pushAll" { :tags ["modifiers" "docs"] } })
(is (= { :_id oid :title title :tags ["mongodb" "modifiers" "docs"] } (mgcol/find-map-by-id coll oid)))))
(deftest double-add-value-to-an-existing-array-using-$pushAll-modifier
(let [coll "docs"
oid (ObjectId.)
title "$pushAll modifier appends multiple values to field"]
(mgcol/insert coll { :_id oid :title title :tags ["mongodb" "docs"] })
(mgcol/update coll { :_id oid } { "$pushAll" { :tags ["modifiers" "docs"] } })
(is (= { :_id oid :title title :tags ["mongodb" "docs" "modifiers" "docs"] } (mgcol/find-map-by-id coll oid)))))