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1 ;; java 5 annotation tests
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2 (in-ns 'clojure.test-clojure.annotations)
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3
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4 (import [java.lang.annotation Annotation Retention RetentionPolicy Target ElementType])
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5 (definterface Foo (foo []))
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6
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7 (deftype #^{Deprecated true
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8 Retention RetentionPolicy/RUNTIME}
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9 Bar [#^int a
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10 #^{:tag int
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11 Deprecated true
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12 Retention RetentionPolicy/RUNTIME} b]
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13 Foo (#^{Deprecated true
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14 Retention RetentionPolicy/RUNTIME}
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15 foo [this] 42))
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16
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17 (defn annotation->map
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18 "Converts a Java annotation (which conceals data)
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19 into a map (which makes is usable). Not lazy.
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20 Works recursively. Returns non-annotations unscathed."
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21 [#^java.lang.annotation.Annotation o]
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22 (cond
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23 (instance? Annotation o)
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24 (let [type (.annotationType o)
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25 itfs (-> (into #{type} (supers type)) (disj java.lang.annotation.Annotation))
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26 data-methods (into #{} (mapcat #(.getDeclaredMethods %) itfs))]
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27 (into
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28 {:annotationType (.annotationType o)}
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29 (map
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30 (fn [m] [(keyword (.getName m)) (annotation->map (.invoke m o nil))])
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31 data-methods)))
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32 (or (sequential? o) (.isArray (class o)))
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33 (map annotation->map o)
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34 :else o))
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35
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36 (def expected-annotations
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37 #{{:annotationType java.lang.annotation.Retention, :value RetentionPolicy/RUNTIME}
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38 {:annotationType java.lang.Deprecated}})
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39
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40 (deftest test-annotations-on-type
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41 (is (=
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42 expected-annotations
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43 (into #{} (map annotation->map (.getAnnotations Bar))))))
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44
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45 (deftest test-annotations-on-field
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46 (is (=
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47 expected-annotations
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48 (into #{} (map annotation->map (.getAnnotations (.getField Bar "b")))))))
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49
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50 (deftest test-annotations-on-method
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51 (is (=
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52 expected-annotations
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53 (into #{} (map annotation->map (.getAnnotations (.getMethod Bar "foo" nil)))))))
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54
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