1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
module DirectoryWatcherSpecs
# EventObserver just hangs out and collects all the events that are sent to it
# It is used by the Scenario
class EventObserver
attr_reader :events
attr_reader :logger
def initialize( logger )
@logger = logger
@events = []
end
def update( *event_list )
logger.debug "got event #{event_list}"
@events.concat event_list
end
end
# Scenario is a utility to wrap up how to run a directory watcher scenario.
# You would use it as such:
#
# dws = Scenario.new( watcher )
# dws.do_after_events(2) do |scenario|
# # do something
# end.until_events(1)
#
# This will create a scenario, run the block after 2 events have been
# collected, and then return again after 1 more event has been collected.
#
# You can then check the events with the custom matcher
#
# dws.events.should be_events_like( ... )
#
class Scenario
include DirectoryWatcher::Logable
attr_reader :watcher
def initialize( watcher )
@watcher = watcher
@config = watcher.config
@observer = EventObserver.new( logger )
@watcher.add_observer( @observer )
reset
end
def run_and_wait_for_event_count(count, &block )
before_count = @observer.events.size
@watcher.resume
logger.debug "Before yielding event_count = #{before_count}"
logger.debug @observer.events.inspect
yield self
wait_for_events( before_count + count )
return self
end
def run_and_wait_for_scan_count(count, &block)
@watcher.resume
yield self
wait_for_scan_count( count )
return self
end
def events
@observer.events
end
def stop
@watcher.stop
end
def pause
@watcher.pause
end
def resume
@watcher.resume
end
def reset
@observer.events.clear
@watcher.start
@watcher.pause
logger.debug "Scenario#reset with pause"
end
def run_once_and_wait_for_event_count( count, &block )
@watcher.resume
@watcher.stop
before_count = @observer.events.size
yield self
@watcher.run_once
wait_for_events( before_count + count )
return self
end
private
def wait_for_events( limit )
#Thread.pass until @observer.events.size >= limit
until @observer.events.size >= limit do
Thread.pass
sleep(0.01)
logger.debug "Waiting for #{limit} events, I have #{@observer.events.size}"
end
end
def wait_for_scan_count( limit )
@watcher.maximum_iterations = limit
#Thread.pass until @watcher.finished_scans?
until @watcher.finished_scans?
sleep(0.01)
logger.debug "Waiting for scan count #{limit} got #{@watcher.scans} #{@watcher.maximum_iterations}"
end
end
end
end
|
