Added a little test of the JSON writer.

I'm also using this test to do the conversions I need, since I just need our
two test scenes in JSON format.

tools/src/test/scala/com/threerings/miso/tools/SceneConverterTest.scala

@@ -0,0 +1,47 @@
+//
+// Nenya library - tools for developing networked games
+// Copyright (C) 2002-2012 Three Rings Design, Inc., All Rights Reserved
+// https://github.com/threerings/nenya
+//
+// This library is free software; you can redistribute it and/or modify it
+// under the terms of the GNU Lesser General Public License as published
+// by the Free Software Foundation; either version 2.1 of the License, or
+// (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+package com.threerings.miso.tools
+
+import org.junit.Test
+import org.junit.Assert._
+
+import playn.core.json.JsonImpl
+
+import com.threerings.miso.data.SimpleMisoSceneModel
+import com.threerings.miso.tools.json.SimpleMisoSceneWriter
+import com.threerings.miso.tools.xml.SimpleMisoSceneParser
+
+/**
+ * Tests the Json scene writing code.
+ */
+class SceneConverterTest
+{
+  @Test def convertScene () {
+    val path = "rsrc/scenes/idyll.xml"
+    val in = getClass.getClassLoader.getResourceAsStream(path)
+    assertTrue("Missing file " + path, in != null)
+    val parser = new SimpleMisoSceneParser("")
+    val model = parser.parseScene(in)
+    assertTrue("No miso scene found in " + path, model != null)
+    val out = new JsonImpl().newWriter
+    SimpleMisoSceneWriter.write(model, out)
+    // println(out.write)
+  }
+}