Test more of provider resolution by mocking the filesystem and commands

1 files changed, 60 insertions, 0 deletions

diff --git a/spec/support/shared/unit/double_world.rb b/spec/support/shared/unit/double_world.rb
new file mode 100644
index 0000000000..3b528f06e2
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+++ b/spec/support/shared/unit/double_world.rb
@@ -0,0 +1,60 @@
+#
+# Author:: John Keiser <jkeiser@chef.io>
+# Copyright:: Copyright (c) 2015 John Keiser.
+# 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.
+#
+
+#
+# Mocks File and ShellOut.
+#
+# world.files["/etc/rc.d/init.d"] = "blah" means that /etc/rc.d/init.d is a file with contents "blah."
+# world.commands["shellme"] = "result" means that when shell_out! calls "shellme", it will return "result" in stdout.
+# world.commands["shellme"] = 10 means that when shell_out! calls "shellme", it will return exit code 10
+# world.commands["shellme"] = { code: 10, stdout: "result", stderr: "result2"}
+#
+shared_context "double world" do
+  let(:world) { DoubleWorld.new }
+  before do
+    allow(::File).to receive(:exists?) { |f| world.files.has_key?(f) }
+    allow(::File).to receive(:executable?) { |f| world.files.has_key?(f) }
+    allow(::File).to receive(:open) { |f| StringIO.new(world.files[f]) }
+
+    allow(::Chef::Mixin::ShellOut).to receive(:shell_out!) do |c|
+      raise "hi"
+      result = world.commands[c]
+      case result
+      when String
+        Mash.new(stdout: result)
+      when Integer
+        Mash.new(exitstatus: result)
+      when Hash
+        Mash.new(result)
+      else
+        raise ArgumentError, result
+      end
+    end
+  end
+
+  private
+
+  class DoubleWorld
+    def initialize
+      @files = {}
+      @commands = {}
+    end
+    attr_reader :files
+    attr_reader :commands
+  end
+end