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Cache API responses and make sure we remember more than just one

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Closes #21.
Squashed commit of the following:

commit 964b29cf127cf51de86543d040bcb6c674b36d7e
Author: Arne Schlüter <arne@schlueter.is>
Date:   Wed Aug 22 17:56:48 2018 +0200

    Pass content for current route nicely to views

commit b469a0a4b69457ddf3a679ac1acc82fbaffdc8fd
Author: Arne Schlüter <arne@schlueter.is>
Date:   Wed Aug 22 16:01:04 2018 +0200

    Add response cache in app-db

commit da9faf89138f42ee544efc64c2e46787091b3dc7
Author: Arne Schlüter <arne@schlueter.is>
Date:   Wed Aug 22 13:40:57 2018 +0200

    Move api helpers and tests to own namespace
This commit is contained in:
Arne Schlüter 2018-08-22 17:58:03 +02:00
commit 2cdae0d683
13 changed files with 222 additions and 94 deletions
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57
test/cljs/airsonic_ui/api/helpers_test.cljs Normal file
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(ns airsonic-ui.api.helpers-test
(:require [cljs.test :refer [deftest testing is]]
[clojure.string :as str]
[airsonic-ui.fixtures :refer [responses]]
[airsonic-ui.api.helpers :as api]))
(defn- url
"Construct a url with no params"
[server endpoint]
(api/url server endpoint {}))
(def fixtures
{:default-url (url "http://localhost:8080" "ping")})
(deftest general-url-construction
(testing "Handles missing slashes"
(is (true? (str/starts-with? (fixtures :default-url) "http://localhost:8080/rest/ping")))
(is (true? (str/starts-with? (url "http://localhost:8080/" "ping") "http://localhost:8080/rest/ping"))))
(testing "Should set correct default parameters"
(is (string? (re-find #"f=json" (fixtures :default-url))))
(is (string? (re-find #"v=1\.15\.0" (fixtures :default-url))))))
(deftest song-urls
(testing "Should construct the url based on a song's id"
(let [song {:id 1234}]
(is (true? (str/includes? (api/song-url "http://localhost" {} song) (str "id=" (:id song))))))))
(deftest cover-urls
(let [album {:coverArt "cover-99999"}]
(testing "Should construct the url based on an item's cover-id"
(is (true? (str/includes? (api/cover-url "http://server.tld" {} album -1) (str "id=" (:coverArt album))))))
(testing "Should scale an image to a given size"
(is (true? (str/includes? (api/cover-url "http://server.tld" {} album 48) "size=48"))))))
(deftest response-handling
(testing "Should unwrap responses"
(let [response (:ok responses)]
(is (= (get-in response [:subsonic-response :scanStatus])
(api/unwrap-response response)))))
(testing "Should detect errors"
(is (true? (api/is-error? (:error responses))))
(is (false? (api/is-error? (:ok responses)))))
(testing "Should throw an informative error when trying to unwrap an erroneous response"
(let [error-response (:error responses)]
(is (thrown? ExceptionInfo (api/unwrap-response error-response)))
(try
(api/unwrap-response error-response)
(catch ExceptionInfo e
(= (:error error-response) (ex-data e)))))))
(deftest error-recognition
(testing "Should detect error responses"
(is (true? (api/is-error? (:error responses))))
(is (true? (api/is-error? (:auth-failure responses)))))
(testing "Should pass on good responses"
(is (false? (api/is-error? (:ok responses))))
(is (false? (api/is-error? (:auth-success responses))))))