130 lines
3 KiB
Ruby
130 lines
3 KiB
Ruby
require 'spec_helper'
|
|
|
|
describe Statistic do
|
|
before do
|
|
@stat = Statistic.new
|
|
@time = Time.now
|
|
|
|
1.times do |n|
|
|
p = alice.post(:status_message, :message => 'hi', :to => alice.aspects.first)
|
|
p.created_at = @time
|
|
p.save
|
|
end
|
|
|
|
5.times do |n|
|
|
p = bob.post(:status_message, :message => 'hi', :to => bob.aspects.first)
|
|
p.created_at = @time
|
|
p.save
|
|
end
|
|
|
|
10.times do |n|
|
|
p = eve.post(:status_message, :message => 'hi', :to => eve.aspects.first)
|
|
p.created_at = @time
|
|
p.save
|
|
end
|
|
|
|
(0..10).each do |n|
|
|
@stat.data_points << DataPoint.users_with_posts_on_day(@time, n)
|
|
end
|
|
end
|
|
|
|
describe '#compute_average' do
|
|
it 'computes the average of all its DataPoints' do
|
|
@stat.compute_average.should == 16.to_f/3
|
|
end
|
|
end
|
|
|
|
describe '#distribution' do
|
|
it 'generates a hash' do
|
|
@stat.distribution.class.should == Hash
|
|
end
|
|
|
|
it 'correctly sets values' do
|
|
dist = @stat.distribution
|
|
[dist['1'], dist['5'], dist['10']].each do |d|
|
|
d.should == 1.to_f/3
|
|
end
|
|
end
|
|
|
|
it 'generates a distribution' do
|
|
values = @stat.distribution.map{|d| d[1]}
|
|
values.inject{ |sum, curr|
|
|
sum += curr
|
|
}.should == 1
|
|
end
|
|
end
|
|
|
|
describe '#distribution_as_array' do
|
|
it 'returns an array' do
|
|
@stat.distribution_as_array.class.should == Array
|
|
end
|
|
|
|
it 'returns in order' do
|
|
dist = @stat.distribution_as_array
|
|
[dist[1], dist[5], dist[10]].each do |d|
|
|
d.should == 1.to_f/3
|
|
end
|
|
end
|
|
end
|
|
|
|
describe '#users_in_sample' do
|
|
it 'returns a count' do
|
|
@stat.users_in_sample.should == 3
|
|
end
|
|
end
|
|
|
|
describe '#generate_graph' do
|
|
it 'outputs a binary string' do
|
|
pending "should use google graph API"
|
|
@stat.generate_graph.class.should == String
|
|
end
|
|
end
|
|
|
|
describe '.generate' do
|
|
before do
|
|
@time = Time.now - 1.day
|
|
|
|
1.times do |n|
|
|
p = alice.post(:status_message, :message => 'hi', :to => alice.aspects.first)
|
|
p.created_at = @time
|
|
p.save
|
|
end
|
|
|
|
5.times do |n|
|
|
p = bob.post(:status_message, :message => 'hi', :to => alice.aspects.first)
|
|
p.created_at = @time
|
|
p.save
|
|
end
|
|
end
|
|
|
|
it 'creates a Statistic with a default date and range' do
|
|
time = Time.now
|
|
Time.stub!(:now).and_return(time)
|
|
|
|
stat = Statistic.generate
|
|
stat.data_points.count.should == 51
|
|
stat.time.should == time
|
|
end
|
|
|
|
context 'custom date' do
|
|
before do
|
|
@stat = Statistic.generate(@time)
|
|
end
|
|
|
|
it 'creates a Statistic with a custom date' do
|
|
@stat.time.should == @time
|
|
end
|
|
|
|
it 'returns only desired sampling' do
|
|
@stat.users_in_sample.should == 2
|
|
end
|
|
end
|
|
|
|
context 'custom range' do
|
|
it 'creates a Statistic with a custom range' do
|
|
stat = Statistic.generate(Time.now, (2..32))
|
|
stat.data_points.count.should == 31
|
|
end
|
|
end
|
|
end
|
|
end
|