2017-09-18 05:30:03 +00:00
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# Route validation
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Namespace `reitit.spec` contains [clojure.spec](https://clojure.org/about/spec) definitions for raw-routes, routes, router and router options.
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**NOTE:** Use of specs requires to use one of the following:
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2017-10-30 06:46:20 +00:00
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* `[org.clojure/clojurescript "1.9.660"]` (or higher)
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* `[org.clojure/clojure "1.9.0-beta2"]` (or higher)
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* `[clojure-future-spec "1.9.0-alpha17"]` (if Clojure 1.8 is used)
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2017-09-18 05:30:03 +00:00
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2017-10-30 06:46:20 +00:00
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## Example
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2017-09-18 05:30:03 +00:00
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```clj
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(require '[clojure.spec.alpha :as s])
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(require '[reitit.spec :as spec])
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(def routes-from-db
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["tenant1" ::tenant1])
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(s/valid? ::spec/raw-routes routes-from-db)
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; false
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(s/explain ::spec/raw-routes routes-from-db)
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; In: [0] val: "tenant1" fails spec: :reitit.spec/path at: [:route :path] predicate: (or (blank? %) (starts-with? % "/"))
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; In: [0] val: "tenant1" fails spec: :reitit.spec/raw-route at: [:routes] predicate: (cat :path :reitit.spec/path :arg (? :reitit.spec/arg) :childs (* (and (nilable :reitit.spec/raw-route))))
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; In: [1] val: :user/tenant1 fails spec: :reitit.spec/raw-route at: [:routes] predicate: (cat :path :reitit.spec/path :arg (? :reitit.spec/arg) :childs (* (and (nilable :reitit.spec/raw-route))))
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; :clojure.spec.alpha/spec :reitit.spec/raw-routes
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; :clojure.spec.alpha/value ["tenant1" :user/tenant1]
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```
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## At development time
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`reitit.core/router` can be instrumented and use something like [expound](https://github.com/bhb/expound) to pretty-print the spec problems.
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First add a `:dev` dependency to:
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```clj
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2017-10-30 06:46:20 +00:00
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[expound "0.3.0"] ; or higher
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2017-09-18 05:30:03 +00:00
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```
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Some bootstrapping:
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```clj
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(require '[clojure.spec.test.alpha :as stest])
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(require '[expound.alpha :as expound])
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(require '[clojure.spec.alpha :as s])
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(require '[reitit.spec])
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(stest/instrument `reitit/router)
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(set! s/*explain-out* expound/printer)
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```
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And we are ready to go:
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```clj
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2017-10-30 06:46:20 +00:00
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(require '[reitit.core :as r])
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2017-09-18 05:30:03 +00:00
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2017-10-30 06:46:20 +00:00
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(r/router
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2017-09-18 05:30:03 +00:00
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["/api"
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["/public"
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["/ping"]
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["pong"]]])
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; CompilerException clojure.lang.ExceptionInfo: Call to #'reitit.core/router did not conform to spec:
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;
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; -- Spec failed --------------------
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;
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; Function arguments
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;
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; (["/api" ...])
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; ^^^^^^
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;
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; should satisfy
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;
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; (clojure.spec.alpha/cat
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; :path
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; :reitit.spec/path
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; :arg
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; (clojure.spec.alpha/? :reitit.spec/arg)
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; :childs
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; (clojure.spec.alpha/*
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; (clojure.spec.alpha/and
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; (clojure.spec.alpha/nilable :reitit.spec/raw-route))))
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;
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; or
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;
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; (clojure.spec.alpha/cat
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; :path
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; :reitit.spec/path
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; :arg
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; (clojure.spec.alpha/? :reitit.spec/arg)
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; :childs
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; (clojure.spec.alpha/*
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; (clojure.spec.alpha/and
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; (clojure.spec.alpha/nilable :reitit.spec/raw-route))))
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;
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; -- Relevant specs -------
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;
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; :reitit.spec/raw-route:
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; (clojure.spec.alpha/cat
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; :path
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; :reitit.spec/path
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; :arg
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; (clojure.spec.alpha/? :reitit.spec/arg)
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; :childs
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; (clojure.spec.alpha/*
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; (clojure.spec.alpha/and
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; (clojure.spec.alpha/nilable :reitit.spec/raw-route))))
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; :reitit.spec/raw-routes:
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; (clojure.spec.alpha/or
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; :route
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; :reitit.spec/raw-route
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; :routes
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; (clojure.spec.alpha/coll-of :reitit.spec/raw-route :into []))
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;
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; -- Spec failed --------------------
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;
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; Function arguments
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;
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; ([... [... ... ["pong"]]])
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; ^^^^^^
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;
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; should satisfy
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;
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; (fn
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; [%]
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; (or
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; (clojure.string/blank? %)
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; (clojure.string/starts-with? % "/")))
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;
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; or
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;
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; (fn
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; [%]
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; (or
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; (clojure.string/blank? %)
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; (clojure.string/starts-with? % "/")))
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;
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; -- Relevant specs -------
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;
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; :reitit.spec/path:
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; (clojure.spec.alpha/and
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; clojure.core/string?
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; (clojure.core/fn
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; [%]
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; (clojure.core/or
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; (clojure.string/blank? %)
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; (clojure.string/starts-with? % "/"))))
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; :reitit.spec/raw-route:
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; (clojure.spec.alpha/cat
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; :path
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; :reitit.spec/path
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; :arg
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; (clojure.spec.alpha/? :reitit.spec/arg)
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; :childs
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; (clojure.spec.alpha/*
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; (clojure.spec.alpha/and
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; (clojure.spec.alpha/nilable :reitit.spec/raw-route))))
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; :reitit.spec/raw-routes:
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; (clojure.spec.alpha/or
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; :route
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; :reitit.spec/raw-route
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; :routes
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; (clojure.spec.alpha/coll-of :reitit.spec/raw-route :into []))
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;
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; -------------------------
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; Detected 2 errors
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```
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# Validating route data
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*TODO*
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