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require 'spec_helper'
module FakeRedis
describe "SetsMethods" do
before(:each) do
@client = Redis.new
end
it "should add a member to a set" do
expect(@client.sadd("key", "value")).to eq(true)
expect(@client.sadd("key", "value")).to eq(false)
expect(@client.smembers("key")).to eq(["value"])
end
it "should raise error if command arguments count is not enough" do
expect { @client.sadd("key", []) }.to raise_error(Redis::CommandError, "ERR wrong number of arguments for 'sadd' command")
expect { @client.sinter(*[]) }.to raise_error(Redis::CommandError, "ERR wrong number of arguments for 'sinter' command")
expect { @client.sinter([]) }.to raise_error(Redis::CommandError, "ERR wrong number of arguments for 'sinter' command")
expect { @client.sunion(*[]) }.to raise_error(Redis::CommandError, "ERR wrong number of arguments for 'sunion' command")
expect { @client.sunion([]) }.to raise_error(Redis::CommandError, "ERR wrong number of arguments for 'sunion' command")
expect { @client.srem("key", []) }.to raise_error(Redis::CommandError, "ERR wrong number of arguments for 'srem' command")
expect(@client.smembers("key")).to be_empty
end
it "should add multiple members to a set" do
expect(@client.sadd("key", %w(value other something more))).to eq(4)
expect(@client.sadd("key", %w(and additional values))).to eq(3)
expect(@client.smembers("key")).to match_array(["value", "other", "something", "more", "and", "additional", "values"])
end
it "should get the number of members in a set" do
@client.sadd("key", "val1")
@client.sadd("key", "val2")
expect(@client.scard("key")).to eq(2)
end
it "should subtract multiple sets" do
@client.sadd("key1", "a")
@client.sadd("key1", "b")
@client.sadd("key1", "c")
@client.sadd("key1", "d")
@client.sadd("key2", "c")
@client.sadd("key3", "a")
@client.sadd("key3", "c")
@client.sadd("key3", "e")
expect(@client.sdiff("key1", "key2", "key3")).to match_array(["b", "d"])
expect(@client.sdiff("key1", ["key2", "key3"])).to match_array(["b", "d"])
end
it "should subtract from a nonexistent set" do
@client.sadd("key2", "a")
@client.sadd("key2", "b")
expect(@client.sdiff("key1", "key2")).to eq([])
expect(@client.sdiff(["key1", "key2"])).to eq([])
end
it "should subtract multiple sets and store the resulting set in a key" do
@client.sadd("key1", "a")
@client.sadd("key1", "b")
@client.sadd("key1", "c")
@client.sadd("key1", "d")
@client.sadd("key2", "c")
@client.sadd("key3", "a")
@client.sadd("key3", "c")
@client.sadd("key3", "e")
@client.sdiffstore("key", "key1", "key2", "key3")
@client.sdiffstore("new_key", "key1", ["key2", "key3"])
expect(@client.smembers("key")).to match_array(["b", "d"])
expect(@client.smembers("new_key")).to match_array(["b", "d"])
end
it "should intersect multiple sets" do
@client.sadd("key1", "a")
@client.sadd("key1", "b")
@client.sadd("key1", "c")
@client.sadd("key1", "d")
@client.sadd("key2", "c")
@client.sadd("key3", "a")
@client.sadd("key3", "c")
@client.sadd("key3", "e")
expect(@client.sinter("key1", "key2", "key3")).to eq(["c"])
expect(@client.sinter(["key1", "key2", "key3"])).to eq(["c"])
end
it "should intersect multiple sets and store the resulting set in a key" do
@client.sadd("key1", "a")
@client.sadd("key1", "b")
@client.sadd("key1", "c")
@client.sadd("key1", "d")
@client.sadd("key2", "c")
@client.sadd("key3", "a")
@client.sadd("key3", "c")
@client.sadd("key3", "e")
@client.sinterstore("key", "key1", "key2", "key3")
@client.sinterstore("new_key", ["key1", "key2", "key3"])
expect(@client.smembers("key")).to eq(["c"])
expect(@client.smembers("new_key")).to eq(["c"])
end
it "should determine if a given value is a member of a set" do
@client.sadd("key1", "a")
expect(@client.sismember("key1", "a")).to eq(true)
expect(@client.sismember("key1", "b")).to eq(false)
expect(@client.sismember("key2", "a")).to eq(false)
end
it "should get all the members in a set" do
@client.sadd("key", "a")
@client.sadd("key", "b")
@client.sadd("key", "c")
@client.sadd("key", "d")
expect(@client.smembers("key")).to match_array(["a", "b", "c", "d"])
end
it "should move a member from one set to another" do
@client.sadd("key1", "a")
@client.sadd("key1", "b")
@client.sadd("key2", "c")
expect(@client.smove("key1", "key2", "a")).to eq(true)
expect(@client.smove("key1", "key2", "a")).to eq(false)
expect(@client.smembers("key1")).to eq(["b"])
expect(@client.smembers("key2")).to match_array(["c", "a"])
end
it "should remove and return a random member from a set" do
@client.sadd("key1", "a")
@client.sadd("key1", "b")
expect(["a", "b"].include?(@client.spop("key1"))).to be true
expect(["a", "b"].include?(@client.spop("key1"))).to be true
expect(@client.spop("key1")).to be_nil
end
it "should get a random member from a set" do
@client.sadd("key1", "a")
@client.sadd("key1", "b")
expect(["a", "b"].include?(@client.spop("key1"))).to be true
end
it "should pop multiple members from a set" do
@client.sadd("key1", "a")
@client.sadd("key1", "b")
@client.sadd("key1", "c")
vals = @client.spop("key1", 2)
expect(vals.count).to eq(2)
vals.each { |v| expect(["a", "b", "c"].include?(v)).to be true }
new_vals = @client.spop("key1", 2)
expect(new_vals.count).to eq(1)
expect(["a", "b", "c"].include?(new_vals.first)).to be true
expect(["a", "b", "c"]).to eq((vals + new_vals).sort)
end
it "should remove a member from a set" do
@client.sadd("key1", "a")
@client.sadd("key1", "b")
expect(@client.srem("key1", "a")).to eq(true)
expect(@client.srem("key1", "a")).to eq(false)
expect(@client.smembers("key1")).to eq(["b"])
end
it "should remove multiple members from a set" do
@client.sadd("key1", "a")
@client.sadd("key1", "b")
expect(@client.srem("key1", [ "a", "b"])).to eq(2)
expect(@client.smembers("key1")).to be_empty
end
it "should remove the set's key once it's empty" do
@client.sadd("key1", "a")
@client.sadd("key1", "b")
@client.srem("key1", "b")
@client.srem("key1", "a")
expect(@client.exists("key1")).to eq(0)
end
it "should add multiple sets" do
@client.sadd("key1", "a")
@client.sadd("key1", "b")
@client.sadd("key1", "c")
@client.sadd("key1", "d")
@client.sadd("key2", "c")
@client.sadd("key3", "a")
@client.sadd("key3", "c")
@client.sadd("key3", "e")
expect(@client.sunion("key1", "key2", "key3")).to match_array(["a", "b", "c", "d", "e"])
end
it "should add multiple sets and store the resulting set in a key" do
@client.sadd("key1", "a")
@client.sadd("key1", "b")
@client.sadd("key1", "c")
@client.sadd("key1", "d")
@client.sadd("key2", "c")
@client.sadd("key3", "a")
@client.sadd("key3", "c")
@client.sadd("key3", "e")
@client.sunionstore("key", "key1", "key2", "key3")
expect(@client.smembers("key")).to match_array(["a", "b", "c", "d", "e"])
end
end
describe 'srandmember' do
before(:each) do
@client = Redis.new
end
context 'with a set that has three elements' do
before do
@client.sadd("key1", "a")
@client.sadd("key1", "b")
@client.sadd("key1", "c")
end
context 'when called without the optional number parameter' do
it 'is a random element from the set' do
random_element = @client.srandmember("key1")
expect(['a', 'b', 'c'].include?(random_element)).to be true
end
end
context 'when called with the optional number parameter of 1' do
it 'is an array of one random element from the set' do
random_elements = @client.srandmember("key1", 1)
expect([['a'], ['b'], ['c']].include?(random_elements)).to be true
end
end
context 'when called with the optional number parameter of 2' do
it 'is an array of two unique, random elements from the set' do
random_elements = @client.srandmember("key1", 2)
expect(random_elements.count).to eq(2)
expect(random_elements.uniq.count).to eq(2)
random_elements.all? do |element|
expect(['a', 'b', 'c'].include?(element)).to be true
end
end
end
context 'when called with an optional parameter of -100' do
it 'is an array of 100 random elements from the set, some of which are repeated' do
random_elements = @client.srandmember("key1", -100)
expect(random_elements.count).to eq(100)
expect(random_elements.uniq.count).to be <= 3
random_elements.all? do |element|
expect(['a', 'b', 'c'].include?(element)).to be true
end
end
end
context 'when called with an optional parameter of 100' do
it 'is an array of all of the elements from the set, none of which are repeated' do
random_elements = @client.srandmember("key1", 100)
expect(random_elements.count).to eq(3)
expect(random_elements.uniq.count).to eq(3)
expect(random_elements).to match_array(['a', 'b', 'c'])
end
end
end
context 'with an empty set' do
before { @client.del("key1") }
it 'is nil without the extra parameter' do
expect(@client.srandmember("key1")).to be_nil
end
it 'is an empty array with an extra parameter' do
expect(@client.srandmember("key1", 1)).to eq([])
end
end
describe "#sscan" do
it 'with no arguments and few items, returns all items' do
@client.sadd('set', ['name', 'Jack', 'age', '33'])
result = @client.sscan('set', 0)
expect(result[0]).to eq('0')
expect(result[1]).to eq(['name', 'Jack', 'age', '33'])
end
it 'with a count should return that number of members or more' do
@client.sadd('set', ['a', '1', 'b', '2', 'c', '3', 'd', '4', 'e', '5', 'f', '6', 'g', '7'])
result = @client.sscan('set', 0, count: 3)
expect(result[0]).to eq('3')
expect(result[1]).to eq([ 'a', '1', 'b'])
end
it 'returns items starting at the provided cursor' do
@client.sadd('set', ['a', '1', 'b', '2', 'c', '3', 'd', '4', 'e', '5', 'f', '6', 'g', '7'])
result = @client.sscan('set', 2, count: 3)
expect(result[0]).to eq('5')
expect(result[1]).to eq(['b', '2', 'c'])
end
it 'with match, returns items matching the given pattern' do
@client.sadd('set', ['aa', '1', 'b', '2', 'cc', '3', 'd', '4', 'ee', '5', 'f', '6', 'gg', '7'])
result = @client.sscan('set', 2, count: 7, match: '??')
expect(result[0]).to eq('9')
expect(result[1]).to eq(['cc','ee'])
end
it 'returns an empty result if the key is not found' do
result = @client.sscan('set', 0)
expect(result[0]).to eq('0')
expect(result[1]).to eq([])
end
end
end
end
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