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(ns clojure.contrib.test-contrib.expect-test
(:use clojure.test)
(:require [clojure.contrib.expect :as expect]))
; Used as dummy dependency functions
(defn fn1 [x] :ignore)
(defn fn2 [x y] :ignore)
(defn fn3 ([x] :ignore)
([x y z] :ignore))
(defn fn4 [x y & r] :ignore)
;functions created using fn directly lack the argslist meta data
(def deffed-differently (fn [x] :ignore))
(defmacro assert-called [fn-name called? & body]
`(let [called-status?# (atom false)]
(binding [~fn-name (fn [& args#] (swap! called-status?# (fn [& args#] true)))] ~@body)
(is (= ~called? @called-status?#))))
(deftest test-convenience
(testing "once"
(is (false? (expect/once 0)))
(is (false? (expect/once 123)))
(is (true? (expect/once 1))))
(testing "never"
(is (false? (expect/never 4)))
(is (true? (expect/never 0))))
(testing "more-than"
(is (false? ((expect/more-than 5) 3)))
(is (true? ((expect/more-than 5) 9))))
(testing "less-than"
(is (true? ((expect/less-than 5) 3)))
(is (false? ((expect/less-than 5) 9))))
(testing "between"
(is (true? ((expect/between 5 8) 6)))
(is (false? ((expect/between 5 8) 5)))))
(deftest test-returns
(is (= {:returns 5} (expect/returns 5)))
(is (= {:other-key "test" :returns nil} (expect/returns nil {:other-key "test"}))))
(deftest test-has-args
(let [ex (:has-args (expect/has-args [1]))]
(is (fn? ex))
(is (ex 'fn1 1))
(is (ex 'fn1 1 5 6))
(assert-called expect/unexpected-args true (ex 'fn1 5)))
(is (contains? (expect/has-args [] {:pre-existing-key "test"}) :pre-existing-key))
(is (true? (((expect/has-args [5]) :has-args)'fn1 5))))
(deftest test-has-matching-signature
(assert-called expect/no-matching-function-signature true
(expect/has-matching-signature? 'clojure.contrib.test-contrib.expect-test/fn2 [1]))
(assert-called expect/no-matching-function-signature true
(expect/has-matching-signature? 'clojure.contrib.test-contrib.expect-test/fn3 [1 3]))
(assert-called expect/no-matching-function-signature false
(expect/has-matching-signature? 'clojure.contrib.test-contrib.expect-test/fn3 [1 3 5]))
(assert-called expect/no-matching-function-signature false
(expect/has-matching-signature? 'clojure.contrib.test-contrib.expect-test/fn4 [1 3 5 7 9]))
(assert-called expect/no-matching-function-signature false
(expect/has-matching-signature? 'clojure.contrib.test-contrib.expect-test/fn4 [1 3]))
(assert-called expect/no-matching-function-signature true
(expect/has-matching-signature? 'clojure.contrib.test-contrib.expect-test/fn4 [1]))
(assert-called expect/no-matching-function-signature false
(expect/has-matching-signature? 'clojure.contrib.test-contrib.expect-test/deffed-differently [1])))
(deftest test-times
(is (fn? ((expect/times #(= 1 %)) :times)))
(is (contains? (expect/times #(= 1 %) {:existing-key "test"}) :existing-key)))
(deftest test-make-mock
(testing "invalid arguments"
(is (thrown? IllegalArgumentException (expect/make-mock [5]))))
(testing "valid counter and unevaluated returns"
(let [[mock counter count-checker] (expect/make-mock 'fn1 (expect/returns 5 (expect/times 1)))]
(is (fn? mock))
(is (= 0 @counter))
(is (= 5 (mock :ignore-me)))
(is (= 1 @counter))))
(testing "returns as expected"
(let [[mock] (expect/make-mock 'fn1 (expect/returns 5))]
(is (= 5 (mock :ignore))))
(let [[mock] (expect/make-mock 'fn1 (expect/returns #(* 2 %)))]
(is (= 10 ((mock :ignore) 5)) ":returns a function should not automatically
evaluate it.")))
(testing "calls replacement-fn and returns the result"
(let [[mock] (expect/make-mock 'fn1 (expect/calls #(* 3 %)))]
(is (= 15 (mock 5))))
(let [[mock] (expect/make-mock 'fn1 (expect/calls #(* 2 %) (expect/returns 3)))]
(is (= 10 (mock 5)))))
(testing "argument validation"
(let [[mock] (expect/make-mock 'fn1 (expect/has-args [#(= 5 %)]))]
(assert-called expect/unexpected-args true (mock "test"))
(is (nil? (mock 5))))))
(deftest test-make-count-checker
(let [checker (expect/make-count-checker 5 5)]
(assert-called expect/incorrect-invocation-count false (checker 'fn1 5))
(assert-called expect/incorrect-invocation-count true (checker 'fn1 3))))
(deftest test-validate-counts
(assert-called expect/incorrect-invocation-count false
(expect/validate-counts (list [(fn []) (atom 0) (expect/make-count-checker #(< % 6) '#(< % 6)) 'fn1])))
(assert-called expect/incorrect-invocation-count true
(expect/validate-counts (list [(fn []) (atom 0) (expect/make-count-checker 4 4) 'fn1]))))
(deftest test-expect-macro
(let [under-test (fn [x] (fn1 x))]
(is (true? (expect/expect [fn1 (expect/times 1 (expect/has-args [#(= 3 %)]))]
(under-test 3))))
(assert-called expect/unexpected-args true (expect/expect [fn1 (expect/times 1 (expect/has-args [#(= 4 %)]))]
(under-test 3))))
(let [under-test (fn [] (fn2 (fn1 1) 3))]
(is (true? (expect/expect [fn1 (expect/times 1 (expect/has-args [#(= 1 %)] (expect/returns 2)))
fn2 (expect/times 1 (expect/has-args [#(= 2 %) #(= 3 %)] (expect/returns 5)))]
(under-test))))))
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