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author | Seth Chisamore <schisamo@opscode.com> | 2012-10-30 10:39:35 -0400 |
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committer | Seth Chisamore <schisamo@opscode.com> | 2012-10-30 10:39:35 -0400 |
commit | 24dc69a9a97e82a6e4207de68d6dcc664178249b (patch) | |
tree | 19bb289c9f88b4bbab066bc56b95d6d222fd5c35 /spec/unit/checksum_cache_spec.rb | |
parent | 9348c1c9c80ee757354d624b7dc1b78ebc7605c4 (diff) | |
download | chef-24dc69a9a97e82a6e4207de68d6dcc664178249b.tar.gz |
[OC-3564] move core Chef to the repo root \o/ \m/
The opscode/chef repository now only contains the core Chef library code
used by chef-client, knife and chef-solo!
Diffstat (limited to 'spec/unit/checksum_cache_spec.rb')
-rw-r--r-- | spec/unit/checksum_cache_spec.rb | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/spec/unit/checksum_cache_spec.rb b/spec/unit/checksum_cache_spec.rb new file mode 100644 index 0000000000..78e76b6dfb --- /dev/null +++ b/spec/unit/checksum_cache_spec.rb @@ -0,0 +1,209 @@ +# +# Author:: Adam Jacob (<adam@opscode.com>) +# Author:: Daniel DeLeo (<dan@kallistec.com>) +# Copyright:: Copyright (c) 2009 Opscode, Inc. +# Copyright:: Copyright (c) 2009 Daniel DeLeo +# License:: Apache License, Version 2.0 +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +require 'spec_helper' + +describe Chef::ChecksumCache do + before(:each) do + Chef::Config[:cache_type] = "Memory" + Chef::Config[:cache_options] = { } + @cache = Chef::ChecksumCache.instance + @cache.reset! + end + + describe "loading the moneta backend" do + it "should build a Chef::ChecksumCache object" do + @cache.should be_a_kind_of(Chef::ChecksumCache) + end + + it "should set up a Moneta Cache adaptor" do + @cache.moneta.should be_a_kind_of(Moneta::Memory) + end + + it "should raise an exception if it cannot load the moneta adaptor" do + Chef::Log.should_receive(:fatal).with(/^Could not load Moneta back end/) + lambda { + c = Chef::ChecksumCache.instance.reset!('WTF') + }.should raise_error(LoadError) + end + end + + describe "when caching checksums of cookbook files and templates" do + + before do + @cache.reset!("Memory", {}) + end + + it "proxies the class method checksum_for_file to the instance" do + @cache.should_receive(:checksum_for_file).with("a_file_or_a_fail") + Chef::ChecksumCache.checksum_for_file("a_file_or_a_fail") + end + + it "returns a cached checksum value" do + @cache.moneta["chef-file-riseofthemachines"] = {"mtime" => "12345", "checksum" => "123abc"} + fstat = mock("File.stat('riseofthemachines')", :mtime => Time.at(12345)) + File.should_receive(:stat).with("riseofthemachines").and_return(fstat) + @cache.checksum_for_file("riseofthemachines").should == "123abc" + end + + it "gives nil for a cache miss" do + @cache.moneta["chef-file-riseofthemachines"] = {"mtime" => "12345", "checksum" => "123abc"} + fstat = mock("File.stat('riseofthemachines')", :mtime => Time.at(555555)) + @cache.lookup_checksum("chef-file-riseofthemachines", fstat).should be_nil + end + + it "treats a non-matching mtime as a cache miss" do + @cache.moneta["chef-file-riseofthemachines"] = {"mtime" => "12345", "checksum" => "123abc"} + fstat = mock("File.stat('riseofthemachines')", :mtime => Time.at(555555)) + @cache.lookup_checksum("chef-file-riseofthemachines", fstat).should be_nil + end + + it "computes a checksum of a file" do + fixture_file = CHEF_SPEC_DATA + "/checksum/random.txt" + expected = "09ee9c8cc70501763563bcf9c218d71b2fbf4186bf8e1e0da07f0f42c80a3394" + @cache.send(:checksum_file, fixture_file, Digest::SHA256.new).should == expected + end + + it "computes a checksum and stores it in the cache" do + fstat = mock("File.stat('riseofthemachines')", :mtime => Time.at(555555)) + @cache.should_receive(:checksum_file).with("riseofthemachines", an_instance_of(Digest::SHA256)).and_return("ohai2uChefz") + @cache.generate_checksum("chef-file-riseofthemachines", "riseofthemachines", fstat).should == "ohai2uChefz" + @cache.lookup_checksum("chef-file-riseofthemachines", fstat).should == "ohai2uChefz" + end + + it "returns a generated checksum if there is no cached value" do + fixture_file = CHEF_SPEC_DATA + "/checksum/random.txt" + expected = "09ee9c8cc70501763563bcf9c218d71b2fbf4186bf8e1e0da07f0f42c80a3394" + @cache.checksum_for_file(fixture_file).should == expected + end + + it "generates a key from a file name" do + file = "/this/is/a/test/random.rb" + @cache.generate_key(file).should == "chef-file--this-is-a-test-random-rb" + end + + it "generates a key from a file name and group" do + file = "/this/is/a/test/random.rb" + @cache.generate_key(file, "spec").should == "spec-file--this-is-a-test-random-rb" + end + + it "returns a cached checksum value using a user defined key" do + key = @cache.generate_key("riseofthemachines", "specs") + @cache.moneta[key] = {"mtime" => "12345", "checksum" => "123abc"} + fstat = mock("File.stat('riseofthemachines')", :mtime => Time.at(12345)) + File.should_receive(:stat).with("riseofthemachines").and_return(fstat) + @cache.checksum_for_file("riseofthemachines", key).should == "123abc" + end + + it "generates a checksum from a non-file IO object" do + io = StringIO.new("riseofthemachines\nriseofthechefs\n") + expected_md5 = '0e157ac1e2dd73191b76067fb6b4bceb' + @cache.generate_md5_checksum(io).should == expected_md5 + end + + end + + describe "when cleaning up after outdated checksums" do + + before do + Chef::ChecksumCache.reset_cache_validity + end + + it "initially has no valid cached checksums" do + Chef::ChecksumCache.valid_cached_checksums.should be_empty + end + + it "adds a checksum to the list of valid cached checksums when it's created" do + @cache.checksum_for_file(File.join(CHEF_SPEC_DATA, 'checksum', 'random.txt')) + Chef::ChecksumCache.valid_cached_checksums.should have(1).valid_checksum + end + + it "adds a checksum to the list of valid cached checksums when it's read" do + @cache.checksum_for_file(File.join(CHEF_SPEC_DATA, 'checksum', 'random.txt')) + Chef::ChecksumCache.reset_cache_validity + @cache.checksum_for_file(File.join(CHEF_SPEC_DATA, 'checksum', 'random.txt')) + Chef::ChecksumCache.valid_cached_checksums.should have(1).valid_checksum + end + + context "with an existing set of cached checksums" do + before do + Chef::Config[:cache_type] = "BasicFile" + Chef::Config[:cache_options] = {:path => File.join(CHEF_SPEC_DATA, "checksum_cache")} + + @expected_cached_checksums = ["chef-file--tmp-chef-rendered-template20100929-10863-600hhz-0", + "chef-file--tmp-chef-rendered-template20100929-10863-6m8zdk-0", + "chef-file--tmp-chef-rendered-template20100929-10863-ahd2gq-0", + "chef-file--tmp-chef-rendered-template20100929-10863-api8ux-0", + "chef-file--tmp-chef-rendered-template20100929-10863-b0r1m1-0", + "chef-file--tmp-chef-rendered-template20100929-10863-bfygsi-0", + "chef-file--tmp-chef-rendered-template20100929-10863-el14l6-0", + "chef-file--tmp-chef-rendered-template20100929-10863-ivrl3y-0", + "chef-file--tmp-chef-rendered-template20100929-10863-kkbs85-0", + "chef-file--tmp-chef-rendered-template20100929-10863-ory1ux-0", + "chef-file--tmp-chef-rendered-template20100929-10863-pgsq76-0", + "chef-file--tmp-chef-rendered-template20100929-10863-ra8uim-0", + "chef-file--tmp-chef-rendered-template20100929-10863-t7k1g-0", + "chef-file--tmp-chef-rendered-template20100929-10863-t8g0sv-0", + "chef-file--tmp-chef-rendered-template20100929-10863-ufy6g3-0", + "chef-file--tmp-chef-rendered-template20100929-10863-x2d6j9-0", + "chef-file--tmp-chef-rendered-template20100929-10863-xi0l6h-0"] + @expected_cached_checksums.sort! + end + + after do + Chef::Config[:cache_type] = "Memory" + Chef::Config[:cache_options] = { } + @cache = Chef::ChecksumCache.instance + @cache.reset! + end + + it "lists all of the cached checksums in the cache directory" do + Chef::ChecksumCache.all_cached_checksums.keys.sort.should == @expected_cached_checksums + end + + it "clears all of the checksums not marked valid from the checksums directory" do + valid_cksum_key = "chef-file--tmp-chef-rendered-template20100929-10863-ivrl3y-0" + valid_cksum_file = File.join(CHEF_SPEC_DATA, "checksum_cache", valid_cksum_key) + @expected_cached_checksums.delete(valid_cksum_key) + + Chef::ChecksumCache.valid_cached_checksums << valid_cksum_key + + Chef::ChecksumCache.should_not_receive(:remove_unused_checksum).with(valid_cksum_file) + @expected_cached_checksums.each do |cksum_key| + full_path_to_cksum = File.join(CHEF_SPEC_DATA, "checksum_cache", cksum_key) + Chef::ChecksumCache.should_receive(:remove_unused_checksum).with(full_path_to_cksum) + end + + Chef::ChecksumCache.cleanup_checksum_cache + end + + it "cleans all 0byte checksum files when it encounters a Marshal error" do + @cache.moneta.stub!(:fetch).and_raise(ArgumentError) + # This cache file is 0 bytes, raises an argument error when + # attempting to Marshal.load + File.should_receive(:unlink).with(File.join(CHEF_SPEC_DATA, "checksum_cache", "chef-file--tmp-chef-rendered-template20100929-10863-6m8zdk-0")) + @cache.lookup_checksum("chef-file--tmp-chef-rendered-template20100929-10863-6m8zdk-0", "foo") + end + end + + end + +end + |