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coercion_test.clj
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coercion_test.clj
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(ns compojure.api.coercion-test
(:require [compojure.api.sweet :refer :all]
[compojure.api.test-utils :refer :all]
[clojure.test :refer [deftest]]
[clojure.test :refer [deftest testing is]]
[ring.util.http-response :refer :all]
[clojure.core.async :as a]
[schema.core :as s]
[compojure.api.middleware :as mw]
[compojure.api.coercion.schema :as cs]))
(defn is-has-body [expected value]
(is (= (second value) expected)))
(defn is-fails-with [expected-status [status body]]
(is (= status expected-status)
(pr-str body))
(is (every? (partial contains? body) [:type :coercion :in :value :schema :errors])
(pr-str body)))
(deftest schema-coercion-test
(testing "response schemas"
(let [r-200 (GET "/" []
:query-params [{value :- s/Int nil}]
:responses {200 {:schema {:value s/Str}}}
(ok {:value (or value "123")}))
r-default (GET "/" []
:query-params [{value :- s/Int nil}]
:responses {:default {:schema {:value s/Str}}}
(ok {:value (or value "123")}))
r-200-default (GET "/" []
:query-params [{value :- s/Int nil}]
:responses {200 {:schema {:value s/Str}}
:default {:schema {:value s/Int}}}
(ok {:value (or value "123")}))]
(testing "200"
(is-has-body {:value "123"} (get* (api {} r-200) "/"))
(is-fails-with 500 (get* (api {} r-200) "/" {:value 123})))
(testing "exception data"
(let [ex (get* (api {} r-200) "/" {:value 123})]
(is (= 500 (first ex)))
(is (= {:type "compojure.api.exception/response-validation"
:coercion "schema",
:in ["response" "body"],
:value {:value 123},
:schema "{:value java.lang.String}",
:errors {:value "(not (instance? java.lang.String 123))"}}
(select-keys (second ex) [:type :coercion :in :value :schema :errors])))))
(testing ":default"
(is-has-body {:value "123"} (get* (api {} r-default) "/"))
(is-fails-with 500 (get* (api {} r-default) "/" {:value 123})))
(testing ":default"
(is-has-body {:value "123"} (get* (api {} r-200-default) "/"))
(is-fails-with 500 (get* (api {} r-200-default) "/" {:value 123})))))
(testing "custom coercion"
(testing "response coercion"
(let [ping-route (GET "/ping" []
:return {:pong s/Str}
(ok {:pong 123}))]
(testing "by default, applies response coercion"
(let [app (api
{}
ping-route)]
(is-fails-with 500 (get* app "/ping"))))
(testing "response-coercion can be disabled"
(testing "separately"
(let [app (api
{:coercion (cs/create-coercion (dissoc cs/default-options :response))}
ping-route)]
(let [[status body] (get* app "/ping")]
(is (= 200 status))
(is (= {:pong 123} body))))
(testing "legacy"
(let [app (api
{:formatter :muuntaja
:coercion mw/no-response-coercion}
ping-route)]
(let [[status body] (get* app "/ping")]
(is (= 200 status))
(is (= {:pong 123} body))))))
(testing "all coercion"
(let [app (api
{:coercion nil}
ping-route)]
(let [[status body] (get* app "/ping")]
(is (= 200 status))
(is (= {:pong 123} body))))))
(testing "coercion for async handlers"
(binding [*async?* true]
(testing "successful"
(let [app (api
{}
(GET "/async" []
:return s/Str
(a/go (ok "abc"))))]
(is-has-body "abc" (get* app "/async"))))
(testing "failing"
(let [app (api
{}
(GET "/async" []
:return s/Int
(a/go (ok "foo"))))]
(is-fails-with 500 (get* app "/async"))))))))
(testing "body coercion"
(let [beer-route (POST "/beer" []
:body [body {:beers #{(s/enum "ipa" "apa")}}]
(ok body))]
(testing "by default, applies body coercion (to set)"
(let [app (api
{}
beer-route)]
(let [[status body] (post* app "/beer" (json-string {:beers ["ipa" "apa" "ipa"]}))]
(is (= 200 status))
(is (= {:beers ["ipa" "apa"]} body)))))
(testing "body-coercion can be disabled"
(let [no-body-coercion (cs/create-coercion (dissoc cs/default-options :body))
app (api
{:coercion no-body-coercion}
beer-route)]
(let [[status body] (post* app "/beer" (json-string {:beers ["ipa" "apa" "ipa"]}))]
(is (= 200 status))
(is (= {:beers ["ipa" "apa" "ipa"]} body))))
(let [app (api
{:coercion nil}
beer-route)]
(let [[status body] (post* app "/beer" (json-string {:beers ["ipa" "apa" "ipa"]}))]
(is (= 200 status))
(is (= {:beers ["ipa" "apa" "ipa"]} body)))))
(testing "legacy body-coercion can be disabled"
(let [no-body-coercion (constantly (dissoc mw/default-coercion-matchers :body))
app (api
{:formatter :muuntaja
:coercion no-body-coercion}
beer-route)]
(let [[status body] (post* app "/beer" (json-string {:beers ["ipa" "apa" "ipa"]}))]
(is (= 200 status))
(is (= {:beers ["ipa" "apa" "ipa"]} body))))
(let [app (api
{:formatter :muuntaja
:coercion nil}
beer-route)]
(let [[status body] (post* app "/beer" (json-string {:beers ["ipa" "apa" "ipa"]}))]
(is (= 200 status))
(is (= {:beers ["ipa" "apa" "ipa"]} body)))))
(testing "body-coercion can be changed"
(let [nop-body-coercion (cs/create-coercion (assoc cs/default-options :body {:default (constantly nil)}))
app (api
{:coercion nop-body-coercion}
beer-route)]
(is-fails-with 400 (post* app "/beer" (json-string {:beers ["ipa" "apa" "ipa"]})))))
(testing "legacy body-coercion can be changed"
(let [nop-body-coercion (constantly (assoc mw/default-coercion-matchers :body (constantly nil)))
app (api
{:formatter :muuntaja
:coercion nop-body-coercion}
beer-route)]
(is-fails-with 400 (post* app "/beer" (json-string {:beers ["ipa" "apa" "ipa"]})))))))
(testing "query coercion"
(let [query-route (GET "/query" []
:query-params [i :- s/Int]
(ok {:i i}))]
(testing "by default, applies query coercion (string->int)"
(let [app (api
{}
query-route)]
(let [[status body] (get* app "/query" {:i 10})]
(is (= 200 status))
(is (= {:i 10} body)))))
(testing "query-coercion can be disabled"
(let [no-query-coercion (cs/create-coercion (dissoc cs/default-options :string))
app (api
{:coercion no-query-coercion}
query-route)]
(let [[status body] (get* app "/query" {:i 10})]
(is (= 200 status))
(is (= {:i "10"} body)))))
(testing "legacy query-coercion can be disabled"
(let [no-query-coercion (constantly (dissoc mw/default-coercion-matchers :string))
app (api
{:formatter :muuntaja
:coercion no-query-coercion}
query-route)]
(let [[status body] (get* app "/query" {:i 10})]
(is (= 200 status))
(is (= {:i "10"} body)))))
(testing "query-coercion can be changed"
(let [nop-query-coercion (cs/create-coercion (assoc cs/default-options :string {:default (constantly nil)}))
app (api
{:coercion nop-query-coercion}
query-route)]
(is-fails-with 400 (get* app "/query" {:i 10}))))
(testing "legacy query-coercion can be changed"
(let [nop-query-coercion (constantly (assoc mw/default-coercion-matchers :string (constantly nil)))
app (api
{:formatter :muuntaja
:coercion nop-query-coercion}
query-route)]
(is-fails-with 400 (get* app "/query" {:i 10}))))))
(testing "route-specific coercion"
(let [app (api
{}
(GET "/default" []
:query-params [i :- s/Int]
(ok {:i i}))
(GET "/disabled-coercion" []
:coercion (cs/create-coercion (assoc cs/default-options :string {:default (constantly nil)}))
:query-params [i :- s/Int]
(ok {:i i}))
(GET "/no-coercion" []
:coercion nil
:query-params [i :- s/Int]
(ok {:i i})))]
(testing "default coercion"
(let [[status body] (get* app "/default" {:i 10})]
(is (= 200 status))
(is (= {:i 10} body))))
(testing "disabled coercion"
(is-fails-with 400 (get* app "/disabled-coercion" {:i 10})))
(testing "exception data"
(let [ex (get* app "/disabled-coercion" {:i 10})]
(is (= 400 (first ex)))
(is (= {:type "compojure.api.exception/request-validation"
:coercion "schema",
:in ["request" "query-params"],
:value {:i "10"}
:schema "{Keyword Any, :i Int}",
:errors {:i "(not (integer? \"10\"))"}}
(select-keys (second ex)
[:type :coercion :in :value :schema :errors])))))
(testing "no coercion"
(let [[status body] (get* app "/no-coercion" {:i 10})]
(is (= 200 status))
(is (= {:i "10"} body))))))
(testing "legacy route-specific coercion"
(let [app (api
{:formatter :muuntaja}
(GET "/default" []
:query-params [i :- s/Int]
(ok {:i i}))
(GET "/disabled-coercion" []
:coercion (constantly (assoc mw/default-coercion-matchers :string (constantly nil)))
:query-params [i :- s/Int]
(ok {:i i}))
(GET "/no-coercion" []
:coercion (constantly nil)
:query-params [i :- s/Int]
(ok {:i i}))
(GET "/nil-coercion" []
:coercion nil
:query-params [i :- s/Int]
(ok {:i i})))]
(testing "default coercion"
(let [[status body] (get* app "/default" {:i 10})]
(is (= 200 status))
(is (= {:i 10} body))))
(testing "disabled coercion"
(is-fails-with 400 (get* app "/disabled-coercion" {:i 10})))
(testing "exception data"
(let [ex (get* app "/disabled-coercion" {:i 10})]
(is (= 400 (first ex)))
(is (= {:type "compojure.api.exception/request-validation"
:coercion "schema",
:in ["request" "query-params"],
:value {:i "10"}
:schema "{Keyword Any, :i Int}",
:errors {:i "(not (integer? \"10\"))"}}
(select-keys (second ex)
[:type :coercion :in :value :schema :errors])))))
(testing "no coercion"
(let [[status body] (get* app "/no-coercion" {:i 10})]
(is (= 200 status))
(is (= {:i "10"} body)))
(let [[status body] (get* app "/nil-coercion" {:i 10})]
(is (= 200 status))
(is (= {:i "10"} body)))))))
(testing "apiless coercion"
(testing "use default-coercion-matchers by default"
(let [app (context "/api" []
:query-params [{y :- Long 0}]
(GET "/ping" []
:query-params [x :- Long]
(ok [x y])))]
(is (thrown? Exception (app {:request-method :get :uri "/api/ping" :query-params {}})))
(is (thrown? Exception (app {:request-method :get :uri "/api/ping" :query-params {:x "abba"}})))
(is (= [1 0] (:body (app {:request-method :get :uri "/api/ping" :query-params {:x "1"}}))))
(is (= [1 2] (:body (app {:request-method :get :uri "/api/ping" :query-params {:x "1", :y 2}}))))
(is (thrown? Exception (app {:request-method :get :uri "/api/ping" :query-params {:x "1", :y "abba"}})))))
(testing "coercion can be overridden"
(let [app (context "/api" []
:query-params [{y :- Long 0}]
(GET "/ping" []
:coercion nil
:query-params [x :- Long]
(ok [x y])))]
(is (thrown? Exception (app {:request-method :get :uri "/api/ping" :query-params {}})))
(is (= ["abba" 0] (:body (app {:request-method :get :uri "/api/ping" :query-params {:x "abba"}}))))
(is (= ["1" 0] (:body (app {:request-method :get :uri "/api/ping" :query-params {:x "1"}}))))
(is (= ["1" 2] (:body (app {:request-method :get :uri "/api/ping" :query-params {:x "1", :y 2}}))))
(is (thrown? Exception (app {:request-method :get :uri "/api/ping" :query-params {:x "1", :y "abba"}})))))
(testing "legacy coercion can be overridden"
(let [app (context "/api" []
:query-params [{y :- Long 0}]
(GET "/ping" []
:coercion (constantly nil)
:query-params [x :- Long]
(ok [x y])))]
(is (thrown? Exception (app {:request-method :get :uri "/api/ping" :query-params {}})))
(is (= ["abba" 0] (:body (app {:request-method :get :uri "/api/ping" :query-params {:x "abba"}}))))
(is (= ["1" 0] (:body (app {:request-method :get :uri "/api/ping" :query-params {:x "1"}}))))
(is (= ["1" 2] (:body (app {:request-method :get :uri "/api/ping" :query-params {:x "1", :y 2}}))))
(is (thrown? Exception (app {:request-method :get :uri "/api/ping" :query-params {:x "1", :y "abba"}})))))
(testing "context coercion is used for subroutes"
(let [app (context "/api" []
:coercion nil
(GET "/ping" []
:query-params [x :- Long]
(ok x)))]
(is (= "abba" (:body (app {:request-method :get :uri "/api/ping" :query-params {:x "abba"}}))))))))