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(ns nrepl.util.completion-test
"Unit tests for completion utilities."
(:require [clojure.set :as set]
[clojure.test :refer :all]
[nrepl.util.completion :as completion :refer [completions]]))
(def t-var "var" nil)
(defn t-fn "fn" [x] x)
(defmacro t-macro "macro" [y] y)
(defn- candidates
"Return only the candidate names without any additional
metadata for them."
([prefix]
(candidates prefix *ns*))
([prefix ns]
(map :candidate (completions prefix ns))))
(defn- distinct-candidates?
"Return true if every candidate occurs in the list of
candidates only once."
([prefix]
(distinct-candidates? prefix *ns*))
([prefix ns]
(apply distinct? (candidates prefix ns))))
(deftest completions-test
(testing "var completion"
(is (= '("alength" "alias" "all-ns" "alter" "alter-meta!" "alter-var-root")
(candidates "al" 'clojure.core)))
(is (= '("jio/make-input-stream" "jio/make-output-stream" "jio/make-parents" "jio/make-reader" "jio/make-writer")
(candidates "jio/make" 'clojure.core)))
(is (= '("clojure.core/alter" "clojure.core/alter-meta!" "clojure.core/alter-var-root")
(candidates "clojure.core/alt" 'clojure.core)))
(is (= () (candidates "fake-ns-here/")))
(is (= () (candidates "/"))))
(testing "namespace completion"
(is (= '("nrepl.util.completion" "nrepl.util.completion-test")
(candidates "nrepl.util.comp")))
(is (set/subset?
#{"clojure.core" "clojure.core.ArrayChunk" "clojure.core.ArrayManager" "clojure.core.IVecImpl" "clojure.core.Vec" "clojure.core.VecNode" "clojure.core.VecSeq" "clojure.core.protocols" "clojure.core.protocols.InternalReduce"}
(set (candidates "clojure.co")))))
(testing "Java instance methods completion"
(is (= '(".toUpperCase")
(candidates ".toUpper")))
(is (distinct-candidates? ".toString")))
(testing "static members completion"
(is (= '("System/out")
(candidates "System/o")))
(is (= '("java.lang.System/out")
(candidates "java.lang.System/out")))
(is (some #{"String/valueOf"} (candidates "String/")))
(is (distinct-candidates? "String/v"))
(is (not (some #{"String/indexOf" ".indexOf"} (candidates "String/")))))
(testing "candidate types"
(is (some #{{:candidate "t-var"
:type :var}}
(completions "t-var" 'nrepl.util.completion-test)))
(is (some #{{:candidate "t-var"
:type :var
:doc "var"}}
(completions "t-var" 'nrepl.util.completion-test {:extra-metadata #{:arglists :doc}})))
(is (some #{{:candidate "t-fn"
:type :function}}
(completions "t-fn" 'nrepl.util.completion-test)))
(is (some #{{:candidate "t-fn"
:type :function
:arglists "([x])"
:doc "fn"}}
(completions "t-fn" 'nrepl.util.completion-test {:extra-metadata #{:arglists :doc}})))
(is (some #{{:candidate "t-macro"
:type :macro}}
(completions "t-macro" 'nrepl.util.completion-test)))
(is (some #{{:candidate "t-macro"
:type :macro
:arglists "([y])"
:doc "macro"}}
(completions "t-macro" 'nrepl.util.completion-test {:extra-metadata #{:arglists :doc}})))
(is (some #{{:candidate "unquote" :type :var}}
(completions "unquote" 'clojure.core)))
(is (some #{{:candidate "if" :ns "clojure.core" :type :special-form}}
(completions "if" 'clojure.core)))
(is (some #{{:candidate "UnsatisfiedLinkError" :type :class}}
(completions "Unsatisfied" 'clojure.core)))
;; ns with :doc meta
(is (some #{{:candidate "clojure.core"
:type :namespace}}
(completions "clojure.core" 'clojure.core)))
(is (some #{{:candidate "clojure.core"
:type :namespace
:doc "Fundamental library of the Clojure language"}}
(completions "clojure.core" 'clojure.core {:extra-metadata #{:doc}})))
;; ns with docstring argument
(is (some #{{:candidate "nrepl.util.completion-test"
:type :namespace}}
(completions "nrepl.util.completion-test" 'clojure.core)))
(is (some #{{:candidate "nrepl.util.completion-test"
:type :namespace
:doc "Unit tests for completion utilities."}}
(completions "nrepl.util.completion-test" 'clojure.core {:extra-metadata #{:doc}})))
(is (some #{{:candidate "Integer/parseInt" :type :static-method}}
(completions "Integer/parseInt" 'clojure.core)))
(is (some #{{:candidate "File/separator", :type :static-method}}
(completions "File/" 'nrepl.util.completion)))
(is (some #{{:candidate ".toString" :type :method}}
(completions ".toString" 'clojure.core)))))
(deftest keyword-completions-test
(testing "colon prefix"
(is (set/subset? #{":doc" ":refer" ":refer-clojure"}
(set (candidates ":" *ns*)))))
(testing "unqualified keywords"
(do #{:t-key-foo :t-key-bar :t-key-baz :t-key/quux}
(is (set/subset? #{":t-key-foo" ":t-key-bar" ":t-key-baz" ":t-key/quux"}
(set (candidates ":t-key" *ns*))))))
(testing "auto-resolved unqualified keywords"
(do #{::foo ::bar ::baz}
(is (set/subset? #{":nrepl.util.completion-test/bar" ":nrepl.util.completion-test/baz"}
(set (candidates ":nrepl.util.completion-test/ba" *ns*))))
(is (set/subset? #{"::bar" "::baz"}
(set (candidates "::ba" 'nrepl.util.completion-test))))))
(testing "auto-resolved qualified keywords"
(do #{:nrepl.core/aliased-one :nrepl.core/aliased-two}
(require '[nrepl.core :as core])
(is (set/subset? #{"::core/aliased-one" "::core/aliased-two"}
(set (candidates "::core/ali" *ns*))))))
(testing "namespace aliases"
(is (set/subset? #{"::set"}
(set (candidates "::s" 'nrepl.util.completion-test)))))
(testing "namespace aliases without namespace"
(is (empty? (candidates "::/" *ns*)))))
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