lib/berkshelf/errors.rb in berkshelf-3.0.1 vs lib/berkshelf/errors.rb in berkshelf-3.1.0

@@ -67,15 +67,17 @@
     status_code(106)
 
     attr_reader :demands
 
     # @param [Array<Dependency>] demands
-    def initialize(demands)
+    def initialize(demands, original_exception)
       @demands = demands
+      @original_exception = original_exception
     end
 
     def to_s
+      @original_exception.to_s +
       "Unable to find a solution for demands: #{demands.join(', ')}"
     end
   end
 
   class CookbookSyntaxError < BerkshelfError; status_code(107); end
@@ -448,8 +450,33 @@
       "at least one source in order to download cookbooks. To add the " \
       "default Berkshelf API server, add the following code to the top of " \
       "your Berksfile:" \
       "\n\n" \
       "    source 'https://api.berkshelf.com'"
+    end
+  end
+
+  class GraphvizNotInstalled < BerkshelfError
+    status_code(147)
+
+    def to_s
+      "Graphviz is not installed! In order to generate a dependency graph, " \
+      "you must install Graphviz. Please visit the Graphviz homepage at " \
+      "http://www.graphviz.org/ or consult your package manager for more " \
+      "information on how to install Graphviz."
+    end
+  end
+
+  class GraphvizCommandFailed < BerkshelfError
+    status_code(148)
+
+    def initialize(command, output)
+      @command = command
+      @output  = output
+    end
+
+    def to_s
+      "The Graphviz command `#{@command}` failed to execute properly. Here " \
+      "is the standard error from the command:\n\n#{@output}"
     end
   end
 end