Fix #53

Author: cowtowncoder

jr-objects/src/main/java/com/fasterxml/jackson/jr/ob/JSON.java

@@ -1040,27 +1040,27 @@ protected JsonParser _parser(Object source) throws IOException, JSONObjectExcept
         if (type == String.class) {
             return f.createParser((String) source);
         }
+        if (type == byte[].class) {
+            return f.createParser((byte[]) source);
+        }
         if (source instanceof InputStream) {
             return f.createParser((InputStream) source);
         }
         if (source instanceof Reader) {
             return f.createParser((Reader) source);
         }
-        if (type == byte[].class) {
-            return f.createParser((byte[]) source);
-        }
         if (source instanceof URL) {
             return f.createParser((URL) source);
         }
         if (type == char[].class) {
             return f.createParser(new CharArrayReader((char[]) source));
         }
+        if (source instanceof File) {
+            return f.createParser((File) source);
+        }
         if (source instanceof CharSequence) {
             return f.createParser(((CharSequence) source).toString());
         }
-        if (source instanceof JsonParser) { // should never be called with this
-            throw new IllegalStateException();
-        }
         throw new JSONObjectException("Can not use Source of type "+source.getClass().getName()
                 +" as input (use an InputStream, Reader, String, byte[], File or URL");
     }

jr-objects/src/test/java/com/fasterxml/jackson/jr/ob/RoundtripTest.java

@@ -1,15 +1,28 @@
 package com.fasterxml.jackson.jr.ob;
 
+import java.io.*;
+
 public class RoundtripTest extends TestBase
 {
     public void testSimple() throws Exception
     {
         MediaItem input = buildItem();
         String json = JSON.std.asString(input);
-        MediaItem item = JSON.std.beanFrom(MediaItem.class, json);
-        String json2 = JSON.std.asString(item);
 
-        assertEquals(json, json2);
+        // Let's exercise multiple styles of input sources
+        
+        assertEquals(json, _readWrite(json));
+        byte[] b = json.getBytes("UTF-8");
+        assertEquals(json, _readWrite(b));
+        assertEquals(json, _readWrite(new ByteArrayInputStream(b)));
+        assertEquals(json, _readWrite(new StringReader(json)));
+        assertEquals(json, _readWrite(json.toCharArray()));
+    }
+
+    private String _readWrite(Object json) throws Exception
+    {
+        MediaItem item = JSON.std.beanFrom(MediaItem.class, json);
+        return JSON.std.asString(item);
     }
 
     private MediaItem buildItem() {

release-notes/VERSION

@@ -4,6 +4,11 @@ Project: jackson-jr
 === Releases ===
 ------------------------------------------------------------------------
 
+2.8.10 (not yet released)
+
+#53: `java.io.File` is not a valid source for anyFrom()/mapFrom()
+ (reported by CoreyTeffetalor@github)
+
 2.8.9 (12-Jun-2017)
 
 #50: Duplicate key detection does not work