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Contents
require File.expand_path('../../../spec_helper', __FILE__)
describe RedisRing::Client::Sharder do
before(:each) do
@sharder = RedisRing::Client::Sharder.new(@meta_data = FakeRingMetaData.new(1024))
end
it "should hash the same value always to the same shard" do
shards = (0..9).map{|n| @sharder.shard_for_key("some_key")}
shards.uniq.size.should == 1
end
it "should never return less than 0 or more than ring_size - 1" do
['foo', 'bar', 'baz'].product(['0', '1', '2']).product(['a', 'b', 'c']).each do |arr|
str = arr.flatten.join('_')
shard = @sharder.shard_for_key(str)
shard.should >= 0
shard.should < 1024
end
end
it "should be sensitive to ring_size change" do
old_val = @sharder.shard_for_key('foo')
@meta_data.ring_size = 100
@sharder.shard_for_key('foo').should_not == old_val
end
it "should return different shards for slightly different values" do
@sharder.shard_for_key('foo1').should_not == @sharder.shard_for_key('foo2')
end
it "should take advantage of the {shard} specifier" do
@sharder.shard_for_key('foo1{one}').should == @sharder.shard_for_key('foo2{one}')
@sharder.shard_for_key('foo1{one}').should == @sharder.shard_for_key('one')
end
end
Version data entries
7 entries across 7 versions & 1 rubygems