[CHEF-3715] rename files checksum_cache -> digester

1 files changed, 50 insertions, 0 deletions

diff --git a/spec/unit/digester_spec.rb b/spec/unit/digester_spec.rb
new file mode 100644
index 0000000000..28e3e918fe
--- /dev/null
+++ b/spec/unit/digester_spec.rb
@@ -0,0 +1,50 @@
+#
+# 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::Digester do
+  before(:each) do
+    @cache = Chef::Digester.instance
+  end
+
+  describe "when computing checksums of cookbook files and templates" do
+
+    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::Digester.checksum_for_file("a_file_or_a_fail")
+    end
+
+    it "computes a checksum of a file" do
+      fixture_file = CHEF_SPEC_DATA + "/checksum/random.txt"
+      expected = "09ee9c8cc70501763563bcf9c218d71b2fbf4186bf8e1e0da07f0f42c80a3394"
+      @cache.checksum_for_file(fixture_file).should == expected
+    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
+
+end
+