/*
   Copyright 2014 CoreOS, Inc.

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/

package store

import (
	"testing"
)

func TestWatcher(t *testing.T) {
	s := newStore()
	wh := s.WatcherHub
	w, err := wh.watch("/foo", true, false, 1, 1)
	if err != nil {
		t.Fatalf("%v", err)
	}
	c := w.EventChan()

	select {
	case <-c:
		t.Fatal("should not receive from channel before send the event")
	default:
		// do nothing
	}

	e := newEvent(Create, "/foo/bar", 1, 1)

	wh.notify(e)

	re := <-c

	if e != re {
		t.Fatal("recv != send")
	}

	w, _ = wh.watch("/foo", false, false, 2, 1)
	c = w.EventChan()

	e = newEvent(Create, "/foo/bar", 2, 2)

	wh.notify(e)

	select {
	case re = <-c:
		t.Fatal("should not receive from channel if not recursive ", re)
	default:
		// do nothing
	}

	e = newEvent(Create, "/foo", 3, 3)

	wh.notify(e)

	re = <-c

	if e != re {
		t.Fatal("recv != send")
	}

	// ensure we are doing exact matching rather than prefix matching
	w, _ = wh.watch("/fo", true, false, 1, 1)
	c = w.EventChan()

	select {
	case re = <-c:
		t.Fatal("should not receive from channel:", re)
	default:
		// do nothing
	}

	e = newEvent(Create, "/fo/bar", 3, 3)

	wh.notify(e)

	re = <-c

	if e != re {
		t.Fatal("recv != send")
	}

}