[#103] add .write and .append support for BufferedWriter

reflection.json

@@ -17,6 +17,12 @@
     "allPublicFields": true,
     "allPublicConstructors": true
   },
+  {
+    "name":"java.io.BufferedWriter",
+    "allPublicMethods":true,
+    "allPublicFields": true,
+    "allPublicConstructors": true
+  },
   {
     "name":"java.io.BufferedReader",
     "allPublicMethods":true

src/babashka/main.clj

@@ -216,6 +216,7 @@ Everything after that is bound to *command-line-args*."))
              :classes {'java.lang.ArithmeticException ArithmeticException
                        'java.lang.AssertionError AssertionError
                        'java.lang.Boolean Boolean
+                       'java.io.BufferedWriter java.io.BufferedWriter
                        'java.lang.Class Class
                        'java.lang.Double Double
                        'java.lang.Exception Exception

test/babashka/main_test.clj

@@ -247,3 +247,13 @@
          (bb nil "(vec (.split (java.util.regex.Pattern/compile \"f\") \"1f2f3\"))")))
   (is (= java.util.regex.Pattern/CANON_EQ
          (bb nil "java.util.regex.Pattern/CANON_EQ"))))
+
+(deftest writer-test
+  (let [tmp-file (java.io.File/createTempFile "bbb" "bbb")
+        path (.getPath tmp-file)]
+    (bb nil (format "(with-open [w (io/writer \"%s\")]
+                       (.write w \"foobar\n\")
+                       (.append w \"barfoo\n\")
+                       nil)"
+                    path))
+    (is (= "foobar\nbarfoo\n" (slurp path)))))