diff -r 000000000000 -r 6474c204b198 toolkit/devtools/server/tests/unit/test_protocol_longstring.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/devtools/server/tests/unit/test_protocol_longstring.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,206 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Test simple requests using the protocol helpers.
+ */
+let protocol = devtools.require("devtools/server/protocol");
+let {method, RetVal, Arg, Option} = protocol;
+let events = devtools.require("sdk/event/core");
+let {LongStringActor} = devtools.require("devtools/server/actors/string");
+
+function simpleHello() {
+  return {
+    from: "root",
+    applicationType: "xpcshell-tests",
+    traits: [],
+  }
+}
+
+DebuggerServer.LONG_STRING_LENGTH = DebuggerServer.LONG_STRING_INITIAL_LENGTH = DebuggerServer.LONG_STRING_READ_LENGTH = 5;
+
+let SHORT_STR = "abc";
+let LONG_STR = "abcdefghijklmnop";
+
+let rootActor = null;
+
+let RootActor = protocol.ActorClass({
+  typeName: "root",
+
+  initialize: function(conn) {
+    rootActor = this;
+    protocol.Actor.prototype.initialize.call(this, conn);
+    // Root actor owns itself.
+    this.manage(this);
+    this.actorID = "root";
+  },
+
+  sayHello: simpleHello,
+
+  shortString: method(function() {
+    return new LongStringActor(this.conn, SHORT_STR);
+  }, {
+    response: { value: RetVal("longstring") },
+  }),
+
+  longString: method(function() {
+    return new LongStringActor(this.conn, LONG_STR);
+  }, {
+    response: { value: RetVal("longstring") },
+  }),
+
+  emitShortString: method(function() {
+    events.emit(this, "string-event", new LongStringActor(this.conn, SHORT_STR));
+  }, {
+    oneway: true,
+  }),
+
+  emitLongString: method(function() {
+    events.emit(this, "string-event", new LongStringActor(this.conn, LONG_STR));
+  }, {
+    oneway: true,
+  }),
+
+  events: {
+    "string-event": {
+      str: Arg(0, "longstring")
+    }
+  }
+});
+
+let RootFront = protocol.FrontClass(RootActor, {
+  initialize: function(client) {
+    this.actorID = "root";
+    protocol.Front.prototype.initialize.call(this, client);
+    // Root owns itself.
+    this.manage(this);
+  }
+});
+
+function run_test()
+{
+  DebuggerServer.createRootActor = (conn => {
+    return RootActor(conn);
+  });
+
+  DebuggerServer.init(() => true);
+  let trace = connectPipeTracing();
+  let client = new DebuggerClient(trace);
+  let rootClient;
+
+  let strfront = null;
+
+  let expectRootChildren = function(size) {
+    do_check_eq(rootActor.__poolMap.size, size + 1);
+    do_check_eq(rootClient.__poolMap.size, size + 1);
+  }
+
+
+  client.connect((applicationType, traits) => {
+    rootClient = RootFront(client);
+
+    // Root actor has no children yet.
+    expectRootChildren(0);
+
+    trace.expectReceive({"from":"<actorid>","applicationType":"xpcshell-tests","traits":[]});
+    do_check_eq(applicationType, "xpcshell-tests");
+    rootClient.shortString().then(ret => {
+      trace.expectSend({"type":"shortString","to":"<actorid>"});
+      trace.expectReceive({"value":"abc","from":"<actorid>"});
+
+      // Should only own the one reference (itself) at this point.
+      expectRootChildren(0);
+      strfront = ret;
+    }).then(() => {
+      return strfront.string();
+    }).then(ret => {
+      do_check_eq(ret, SHORT_STR);
+    }).then(() => {
+      return rootClient.longString();
+    }).then(ret => {
+      trace.expectSend({"type":"longString","to":"<actorid>"});
+      trace.expectReceive({"value":{"type":"longString","actor":"<actorid>","length":16,"initial":"abcde"},"from":"<actorid>"});
+
+      strfront = ret;
+      // Should own a reference to itself and an extra string now.
+      expectRootChildren(1);
+    }).then(() => {
+      return strfront.string();
+    }).then(ret => {
+      trace.expectSend({"type":"substring","start":5,"end":10,"to":"<actorid>"});
+      trace.expectReceive({"substring":"fghij","from":"<actorid>"});
+      trace.expectSend({"type":"substring","start":10,"end":15,"to":"<actorid>"});
+      trace.expectReceive({"substring":"klmno","from":"<actorid>"});
+      trace.expectSend({"type":"substring","start":15,"end":20,"to":"<actorid>"});
+      trace.expectReceive({"substring":"p","from":"<actorid>"});
+
+      do_check_eq(ret, LONG_STR);
+    }).then(() => {
+      return strfront.release();
+    }).then(() => {
+      trace.expectSend({"type":"release","to":"<actorid>"});
+      trace.expectReceive({"from":"<actorid>"});
+
+      // That reference should be removed now.
+      expectRootChildren(0);
+    }).then(() => {
+      let deferred = promise.defer();
+      rootClient.once("string-event", (str) => {
+        trace.expectSend({"type":"emitShortString","to":"<actorid>"});
+        trace.expectReceive({"type":"string-event","str":"abc","from":"<actorid>"});
+
+        do_check_true(!!str);
+        strfront = str;
+        // Shouldn't generate any new references
+        expectRootChildren(0);
+        // will generate no packets.
+        strfront.string().then((value) => { deferred.resolve(value) });
+      });
+      rootClient.emitShortString();
+      return deferred.promise;
+    }).then(value => {
+      do_check_eq(value, SHORT_STR);
+    }).then(() => {
+      // Will generate no packets
+      return strfront.release();
+    }).then(() => {
+      let deferred = promise.defer();
+      rootClient.once("string-event", (str) => {
+        trace.expectSend({"type":"emitLongString","to":"<actorid>"});
+        trace.expectReceive({"type":"string-event","str":{"type":"longString","actor":"<actorid>","length":16,"initial":"abcde"},"from":"<actorid>"});
+
+        do_check_true(!!str);
+        // Should generate one new reference
+        expectRootChildren(1);
+        strfront = str;
+        strfront.string().then((value) => {
+          trace.expectSend({"type":"substring","start":5,"end":10,"to":"<actorid>"});
+          trace.expectReceive({"substring":"fghij","from":"<actorid>"});
+          trace.expectSend({"type":"substring","start":10,"end":15,"to":"<actorid>"});
+          trace.expectReceive({"substring":"klmno","from":"<actorid>"});
+          trace.expectSend({"type":"substring","start":15,"end":20,"to":"<actorid>"});
+          trace.expectReceive({"substring":"p","from":"<actorid>"});
+
+          deferred.resolve(value);
+        });
+      });
+      rootClient.emitLongString();
+      return deferred.promise;
+    }).then(value => {
+      do_check_eq(value, LONG_STR);
+    }).then(() => {
+      return strfront.release();
+    }).then(() => {
+      trace.expectSend({"type":"release","to":"<actorid>"});
+      trace.expectReceive({"from":"<actorid>"});
+      expectRootChildren(0);
+    }).then(() => {
+      client.close(() => {
+        do_test_finished();
+      });
+    }).then(null, err => {
+      do_report_unexpected_exception(err, "Failure executing test");
+    });
+  });
+  do_test_pending();
+}