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; Copyright (c) Rich Hickey. All rights reserved.
; The use and distribution terms for this software are covered by the
; Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
; which can be found in the file epl-v10.html at the root of this distribution.
; By using this software in any fashion, you are agreeing to be bound by
; the terms of this license.
; You must not remove this notice, or any other, from this software.
(ns clojure.test-clojure.java.io
(:use clojure.test clojure.java.io)
(:import (java.io File BufferedInputStream
FileInputStream InputStreamReader InputStream
FileOutputStream OutputStreamWriter OutputStream
ByteArrayInputStream ByteArrayOutputStream)
(java.net URL URI Socket ServerSocket)))
(defn temp-file
[prefix suffix]
(doto (File/createTempFile prefix suffix)
(.deleteOnExit)))
(deftest test-spit-and-slurp
(let [f (temp-file "clojure.java.io" "test")]
(spit f "foobar")
(is (= "foobar" (slurp f)))
(spit f "foobar" :encoding "UTF-16")
(is (= "foobar" (slurp f :encoding "UTF-16")))
(testing "deprecated arity"
(is (=
"WARNING: (slurp f enc) is deprecated, use (slurp f :encoding enc).\n"
(with-out-str
(is (= "foobar" (slurp f "UTF-16")))))))))
(deftest test-streams-defaults
(let [f (temp-file "clojure.java.io" "test-reader-writer")
content "testing"]
(try
(is (thrown? Exception (reader (Object.))))
(is (thrown? Exception (writer (Object.))))
(are [write-to read-from] (= content (do
(spit write-to content :encoding "UTF-8")
(slurp read-from :encoding "UTF-8")))
f f
(.getAbsolutePath f) (.getAbsolutePath f)
(.toURL f) (.toURL f)
(.toURI f) (.toURI f)
(FileOutputStream. f) (FileInputStream. f)
(OutputStreamWriter. (FileOutputStream. f) "UTF-8") (reader f :encoding "UTF-8")
f (FileInputStream. f)
(writer f :encoding "UTF-8") (InputStreamReader. (FileInputStream. f) "UTF-8"))
(is (= content (slurp (.getBytes content "UTF-8"))))
(is (= content (slurp (.toCharArray content))))
(finally
(.delete f)))))
(defn bytes-should-equal [byte-array-1 byte-array-2 msg]
(is (= @#'clojure.java.io/byte-array-type (class byte-array-1) (class byte-array-2)) msg)
(is (= (into [] byte-array-1) (into [] byte-array-2)) msg))
(defn data-fixture
"in memory fixture data for tests"
[encoding]
(let [bs (.getBytes "hello" encoding)
cs (.toCharArray "hello")
i (ByteArrayInputStream. bs)
r (InputStreamReader. i)
o (ByteArrayOutputStream.)
w (OutputStreamWriter. o)]
{:bs bs
:i i
:r r
:o o
:s "hello"
:cs cs
:w w}))
(deftest test-copy
(dorun
(for [{:keys [in out flush] :as test}
[{:in :i :out :o}
{:in :i :out :w}
{:in :r :out :o}
{:in :r :out :w}
{:in :cs :out :o}
{:in :cs :out :w}
{:in :bs :out :o}
{:in :bs :out :w}]
opts
[{} {:buffer-size 256}]]
(let [{:keys [s o] :as d} (data-fixture "UTF-8")]
(apply copy (in d) (out d) (flatten (vec opts)))
#_(when (= out :w) (.flush (:w d)))
(.flush (out d))
(bytes-should-equal (.getBytes s "UTF-8")
(.toByteArray o)
(str "combination " test opts))))))
(deftest test-copy-encodings
(testing "from inputstream UTF-16 to writer UTF-8"
(let [{:keys [i s o w bs]} (data-fixture "UTF-16")]
(copy i w :encoding "UTF-16")
(.flush w)
(bytes-should-equal (.getBytes s "UTF-8") (.toByteArray o) "")))
(testing "from reader UTF-8 to output-stream UTF-16"
(let [{:keys [r o s]} (data-fixture "UTF-8")]
(copy r o :encoding "UTF-16")
(bytes-should-equal (.getBytes s "UTF-16") (.toByteArray o) ""))))
(deftest test-as-file
(are [result input] (= result (as-file input))
(File. "foo") "foo"
(File. "bar") (File. "bar")
(File. "baz") (URL. "file:baz")
(File. "quux") (URI. "file:quux")
nil nil))
(deftest test-file
(are [result args] (= (File. result) (apply file args))
"foo" ["foo"]
"foo/bar" ["foo" "bar"]
"foo/bar/baz" ["foo" "bar" "baz"]))
(deftest test-as-url
(are [file-part input] (= (URL. (str "file:" file-part)) (as-url input))
"foo" "file:foo"
"baz" (URL. "file:baz")
"quux" (URI. "file:quux"))
(is (nil? (as-url nil))))
(deftest test-delete-file
(let [file (temp-file "test" "deletion")
not-file (File. (str (java.util.UUID/randomUUID)))]
(delete-file (.getAbsolutePath file))
(is (not (.exists file)))
(is (thrown? java.io.IOException (delete-file not-file)))
(is (= :silently (delete-file not-file :silently)))))
(deftest test-as-relative-path
(testing "strings"
(is (= "foo" (as-relative-path "foo"))))
(testing "absolute path strings are forbidden"
(is (thrown? IllegalArgumentException (as-relative-path (.getAbsolutePath (File. "baz"))))))
(testing "relative File paths"
(is (= "bar" (as-relative-path (File. "bar")))))
(testing "absolute File paths are forbidden"
(is (thrown? IllegalArgumentException (as-relative-path (File. (.getAbsolutePath (File. "quux"))))))))
(defn stream-should-have [stream expected-bytes msg]
(let [actual-bytes (byte-array (alength expected-bytes))]
(.read stream actual-bytes)
(is (= -1 (.read stream)) (str msg " : should be end of stream"))
(is (= (seq expected-bytes) (seq actual-bytes)) (str msg " : byte arrays should match"))))
(deftest test-input-stream
(let [file (temp-file "test-input-stream" "txt")
bytes (.getBytes "foobar")]
(spit file "foobar")
(doseq [[expr msg]
[[file File]
[(FileInputStream. file) FileInputStream]
[(BufferedInputStream. (FileInputStream. file)) BufferedInputStream]
[(.. file toURI) URI]
[(.. file toURI toURL) URL]
[(.. file toURI toURL toString) "URL as String"]
[(.. file toString) "File as String"]]]
(with-open [s (input-stream expr)]
(stream-should-have s bytes msg)))))
(deftest test-streams-buffering
(let [data (.getBytes "")]
(is (instance? java.io.BufferedReader (reader data)))
(is (instance? java.io.BufferedWriter (writer (java.io.ByteArrayOutputStream.))))
(is (instance? java.io.BufferedInputStream (input-stream data)))
(is (instance? java.io.BufferedOutputStream (output-stream (java.io.ByteArrayOutputStream.))))))
(deftest test-resource
(is (nil? (resource "non/existent/resource")))
(is (instance? URL (resource "clojure/core.clj")))
(let [file (temp-file "test-resource" "txt")
url (as-url (.getParentFile file))
loader (java.net.URLClassLoader. (into-array [url]))]
(is (nil? (resource "non/existent/resource" loader)))
(is (instance? URL (resource (.getName file) loader)))))
(deftest test-make-parents
(let [tmp (System/getProperty "java.io.tmpdir")]
(delete-file (file tmp "test-make-parents" "child" "grandchild") :silently)
(delete-file (file tmp "test-make-parents" "child") :silently)
(delete-file (file tmp "test-make-parents") :silently)
(make-parents tmp "test-make-parents" "child" "grandchild")
(is (.isDirectory (file tmp "test-make-parents" "child")))
(is (not (.isDirectory (file tmp "test-make-parents" "child" "grandchild"))))
(delete-file (file tmp "test-make-parents" "child"))
(delete-file (file tmp "test-make-parents"))))
(deftest test-socket-iofactory
(let [port 65321
server-socket (ServerSocket. port)
client-socket (Socket. "localhost" port)]
(try
(is (instance? InputStream (input-stream client-socket)))
(is (instance? OutputStream (output-stream client-socket)))
(finally (.close server-socket)
(.close client-socket)))))
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