hy/tests/native_tests/defclass.hy

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(defn test-defclass []
"NATIVE: test defclass simple mechanism"
(defclass A)
(assert (isinstance (A) A)))
(defn test-defclass-inheritance []
"NATIVE: test defclass inheritance"
(defclass A [])
(assert (isinstance (A) object))
(defclass A [object])
(assert (isinstance (A) object))
(defclass B [A])
(assert (isinstance (B) A))
(defclass C [object])
(defclass D [B C])
(assert (isinstance (D) A))
(assert (isinstance (D) B))
(assert (isinstance (D) C))
(assert (not (isinstance (A) D))))
(defn test-defclass-slots []
"NATIVE: test defclass slots"
(defclass A []
[[x 42]])
(assert (= A.x 42))
(assert (= (getattr (A) "x") 42)))
(defn test-defclass-slots-fn []
"NATIVE: test defclass slots with fn"
(defclass B []
[[x 42]
[y (fn [self value]
(+ self.x value))]])
(assert (= B.x 42))
(assert (= (.y (B) 5) 47))
(let [[b (B)]]
(setv B.x 0)
(assert (= (.y b 1) 1))))
(defn test-defclass-dynamic-inheritance []
"NATIVE: test defclass with dynamic inheritance"
(defclass A [((fn [] (if true list dict)))]
[[x 42]])
(assert (isinstance (A) list))
(defclass A [((fn [] (if false list dict)))]
[[x 42]])
(assert (isinstance (A) dict)))
(defn test-defclass-no-fn-leak []
"NATIVE: test defclass slots with fn"
(defclass A []
[[x (fn [] 1)]])
(try
(do
(x)
(assert false))
(except [NameError])))
(defn test-defclass-docstring []
"NATIVE: test defclass docstring"
(defclass A []
[[--doc-- "doc string"]
[x 1]])
(setv a (A))
(assert (= a.__doc__ "doc string"))
(defclass B []
"doc string"
[[x 1]])
(setv b (B))
(assert (= b.x 1))
(assert (= b.__doc__ "doc string"))
(defclass MultiLine []
"begin a very long multi-line string to make
sure that it comes out the way we hope
and can span 3 lines end."
[[x 1]])
(setv mL (MultiLine))
(assert (= mL.x 1))
(assert (in "begin" mL.__doc__))
(assert (in "end" mL.__doc__)))