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require File.dirname(__FILE__) + '/spec_helper'
require 'stringio'
describe Redis::Namespace do
# Blind passthrough of unhandled commands will be removed
# in 2.0; the following tests ensure that we support them
# until that point, & that we can programatically disable
# them in the meantime.
context 'deprecated 1.x behaviour' do
let(:redis) { double(Redis) }
let(:namespaced) do
Redis::Namespace.new(:ns, options.merge(:redis => redis))
end
let(:options) { Hash.new }
subject { namespaced }
its(:deprecations?) { should be false }
its(:warning?) { should be true }
context('with REDIS_NAMESPACE_DEPRECATIONS') do
around(:each) {|e| with_env('REDIS_NAMESPACE_DEPRECATIONS'=>'1', &e) }
its(:deprecations?) { should be true }
end
context('with REDIS_NAMESPACE_QUIET') do
around(:each) {|e| with_env('REDIS_NAMESPACE_QUIET'=>'1', &e) }
its(:warning?) { should be false }
end
before(:each) do
allow(redis).to receive(:unhandled) do |*args|
"unhandled(#{args.inspect})"
end
allow(redis).to receive(:flushdb).and_return("OK")
end
# This behaviour will hold true after the 2.x migration
context('with deprecations enabled') do
let(:options) { {:deprecations => true} }
its(:deprecations?) { should be true }
context('with an unhandled command') do
it { is_expected.not_to respond_to :unhandled }
it('raises a NoMethodError') do
expect do
namespaced.unhandled('foo')
end.to raise_exception NoMethodError
end
end
context('with an administrative command') do
it { is_expected.not_to respond_to :flushdb }
it('raises a NoMethodError') do
expect do
namespaced.flushdb
end.to raise_exception NoMethodError
end
end
end
# This behaviour will no longer be available after the 2.x migration
context('with deprecations disabled') do
let(:options) { {:deprecations => false} }
its(:deprecations?) { should be false }
context('with an an unhandled command') do
it { is_expected.to respond_to :unhandled }
it 'blindly passes through' do
expect(redis).to receive(:unhandled)
capture_stderr do
response = namespaced.unhandled('foo')
expect(response).to eq 'unhandled(["foo"])'
end
end
it 'warns with helpful output' do
capture_stderr(stderr = StringIO.new) do
namespaced.unhandled('bar')
end
warning = stderr.tap(&:rewind).read
expect(warning).to_not be_empty
expect(warning).to include %q(Passing 'unhandled' command to redis as is)
expect(warning).to include %q(blind passthrough)
expect(warning).to include __FILE__
end
context('and warnings disabled') do
let(:options) { super().merge(:warning => false)}
it 'does not warn' do
capture_stderr(stderr = StringIO.new) do
namespaced.unhandled('bar')
end
warning = stderr.tap(&:rewind).read
expect(warning).to be_empty
end
end
end
context('with an administrative command') do
it { is_expected.to respond_to :flushdb }
it 'processes the command' do
expect(redis).to receive(:flushdb)
capture_stderr { namespaced.flushdb }
end
it 'warns with helpful output' do
capture_stderr(stderr = StringIO.new) do
namespaced.flushdb
end
warning = stderr.tap(&:rewind).read
expect(warning).to_not be_empty
expect(warning).to include %q(Passing 'flushdb' command to redis as is)
expect(warning).to include %q(administrative)
expect(warning).to include __FILE__
end
end
end
end
end
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