Refactor api_controller tests to avoid users fixtures.

[rails.git] / lib / diff_reader.rb

diff --git a/lib/diff_reader.rb b/lib/diff_reader.rb
index ca38d350148552ba5e8c85e1b2085ed9e20ec88a..c2e7f18394a8769ec284ecb276d45af329f16477 100644 (file)
--- a/lib/diff_reader.rb
+++ b/lib/diff_reader.rb
@@ -7,11 +7,11 @@ class DiffReader
   include ConsistencyValidations
 
   # maps each element type to the model class which handles it
   include ConsistencyValidations
 
   # maps each element type to the model class which handles it

-  MODELS = { 
-    "node"     => Node, 
-    "way"      => Way, 
+  MODELS = {
+    "node"     => Node,
+    "way"      => Way,

     "relation" => Relation
     "relation" => Relation

-  }
+  }.freeze

 
   ##
   # Construct a diff reader by giving it a bunch of XML +data+ to parse
 
   ##
   # Construct a diff reader by giving it a bunch of XML +data+ to parse


@@ -32,15 +32,13 @@ class DiffReader
   def read_or_die
     # NOTE: XML::Reader#read returns false for EOF and raises an
     # exception if an error occurs.
   def read_or_die
     # NOTE: XML::Reader#read returns false for EOF and raises an
     # exception if an error occurs.

-    begin
-      @reader.read
-    rescue LibXML::XML::Error => ex
-      raise OSM::APIBadXMLError.new("changeset", xml, ex.message)
-    end
+    @reader.read
+  rescue LibXML::XML::Error => ex
+    raise OSM::APIBadXMLError.new("changeset", xml, ex.message)

   end
 
   ##
   end
 
   ##

-  # An element-block mapping for using the LibXML reader interface. 
+  # An element-block mapping for using the LibXML reader interface.

   #
   # Since a lot of LibXML reader usage is boilerplate iteration through
   # elements, it would be better to DRY and do this in a block. This
   #
   # Since a lot of LibXML reader usage is boilerplate iteration through
   # elements, it would be better to DRY and do this in a block. This


@@ -52,14 +50,14 @@ class DiffReader
       # read the first element
       read_or_die
 
       # read the first element
       read_or_die
 

-      while @reader.node_type != 15 do # end element
+      while @reader.node_type != 15 # end element

         # because we read elements in DOM-style to reuse their DOM
         # parsing code, we don't always read an element on each pass
         # as the call to @reader.next in the innermost loop will take
         # care of that for us.
         if @reader.node_type == 1 # element
           name = @reader.name
         # because we read elements in DOM-style to reuse their DOM
         # parsing code, we don't always read an element on each pass
         # as the call to @reader.next in the innermost loop will take
         # care of that for us.
         if @reader.node_type == 1 # element
           name = @reader.name

-          attributes =  {}
+          attributes = {}

 
           if @reader.has_attributes?
             while @reader.move_to_next_attribute == 1
 
           if @reader.has_attributes?
             while @reader.move_to_next_attribute == 1


@@ -73,23 +71,25 @@ class DiffReader
         else
           read_or_die
         end
         else
           read_or_die
         end

-      end 
+      end

     end
     read_or_die
   end
 
   ##
     end
     read_or_die
   end
 
   ##

-  # An element-block mapping for using the LibXML reader interface. 
+  # An element-block mapping for using the LibXML reader interface.

   #
   # Since a lot of LibXML reader usage is boilerplate iteration through
   # elements, it would be better to DRY and do this in a block. This
   # could also help with error handling...?
   def with_model
   #
   # Since a lot of LibXML reader usage is boilerplate iteration through
   # elements, it would be better to DRY and do this in a block. This
   # could also help with error handling...?
   def with_model

-    with_element do |model_name,model_attributes|
+    with_element do |model_name, _model_attributes|

       model = MODELS[model_name]
       model = MODELS[model_name]

-      raise OSM::APIBadUserInput.new("Unexpected element type #{model_name}, " +
-                                     "expected node, way or relation.") if model.nil?
-      # new in libxml-ruby >= 2, expand returns an element not associated 
+      if model.nil?
+        raise OSM::APIBadUserInput.new("Unexpected element type #{model_name}, " +
+                                       "expected node, way or relation.")
+      end
+      # new in libxml-ruby >= 2, expand returns an element not associated

       # with a document. this means that there's no encoding parameter,
       # which means basically nothing works.
       expanded = @reader.expand
       # with a document. this means that there's no encoding parameter,
       # which means basically nothing works.
       expanded = @reader.expand


@@ -112,7 +112,7 @@ class DiffReader
   # such as save_ and delete_with_history.
   def check(model, xml, new)
     raise OSM::APIBadXMLError.new(model, xml) if new.nil?
   # such as save_ and delete_with_history.
   def check(model, xml, new)
     raise OSM::APIBadXMLError.new(model, xml) if new.nil?

-    unless new.changeset_id == @changeset.id 
+    unless new.changeset_id == @changeset.id

       raise OSM::APIChangesetMismatchError.new(new.changeset_id, @changeset.id)
     end
   end
       raise OSM::APIChangesetMismatchError.new(new.changeset_id, @changeset.id)
     end
   end


@@ -122,24 +122,22 @@ class DiffReader
   # is *not* transactional, so code which calls it should ensure that the
   # appropriate transaction block is in place.
   #
   # is *not* transactional, so code which calls it should ensure that the
   # appropriate transaction block is in place.
   #

-  # On a failure to meet preconditions (e.g: optimistic locking fails) 
+  # On a failure to meet preconditions (e.g: optimistic locking fails)

   # an exception subclassing OSM::APIError will be thrown.
   def commit
   # an exception subclassing OSM::APIError will be thrown.
   def commit

-

     # data structure used for mapping placeholder IDs to real IDs
     # data structure used for mapping placeholder IDs to real IDs

-    node_ids, way_ids, rel_ids = {}, {}, {}
-    ids = { :node => node_ids, :way => way_ids, :relation => rel_ids}
+    ids = { :node => {}, :way => {}, :relation => {} }

 
     # take the first element and check that it is an osmChange element
     @reader.read
 
     # take the first element and check that it is an osmChange element
     @reader.read

-    raise OSM::APIBadUserInput.new("Document element should be 'osmChange'.") if @reader.name != 'osmChange'
+    raise OSM::APIBadUserInput.new("Document element should be 'osmChange'.") if @reader.name != "osmChange"

 
     result = OSM::API.new.get_xml_doc
     result.root.name = "diffResult"
 
     # loop at the top level, within the <osmChange> element
 
     result = OSM::API.new.get_xml_doc
     result.root.name = "diffResult"
 
     # loop at the top level, within the <osmChange> element

-    with_element do |action_name,action_attributes|
-      if action_name == 'create'
+    with_element do |action_name, action_attributes|
+      if action_name == "create"

         # create a new element. this code is agnostic of the element type
         # because all the elements support the methods that we're using.
         with_model do |model, xml|
         # create a new element. this code is agnostic of the element type
         # because all the elements support the methods that we're using.
         with_model do |model, xml|


@@ -148,7 +146,7 @@ class DiffReader
 
           # when this element is saved it will get a new ID, so we save it
           # to produce the mapping which is sent to other elements.
 
           # when this element is saved it will get a new ID, so we save it
           # to produce the mapping which is sent to other elements.

-          placeholder_id = xml['id'].to_i
+          placeholder_id = xml["id"].to_i

           raise OSM::APIBadXMLError.new(model, xml) if placeholder_id.nil?
 
           # check if the placeholder ID has been given before and throw
           raise OSM::APIBadXMLError.new(model, xml) if placeholder_id.nil?
 
           # check if the placeholder ID has been given before and throw


@@ -162,7 +160,7 @@ class DiffReader
 
           # create element given user
           new.create_with_history(@changeset.user)
 
           # create element given user
           new.create_with_history(@changeset.user)

-          
+

           # save placeholder => allocated ID map
           ids[model_sym][placeholder_id] = new.id
 
           # save placeholder => allocated ID map
           ids[model_sym][placeholder_id] = new.id
 


@@ -173,8 +171,8 @@ class DiffReader
           xml_result["new_version"] = new.version.to_s
           result.root << xml_result
         end
           xml_result["new_version"] = new.version.to_s
           result.root << xml_result
         end

-        
-      elsif action_name == 'modify'
+
+      elsif action_name == "modify"

         # modify an existing element. again, this code doesn't directly deal
         # with types, but uses duck typing to handle them transparently.
         with_model do |model, xml|
         # modify an existing element. again, this code doesn't directly deal
         # with types, but uses duck typing to handle them transparently.
         with_model do |model, xml|


@@ -199,20 +197,20 @@ class DiffReader
 
           xml_result = XML::Node.new model.to_s.downcase
           xml_result["old_id"] = client_id.to_s
 
           xml_result = XML::Node.new model.to_s.downcase
           xml_result["old_id"] = client_id.to_s

-          xml_result["new_id"] = id.to_s 
+          xml_result["new_id"] = id.to_s

           # version is updated in "old" through the update, so we must not
           # return new.version here but old.version!
           xml_result["new_version"] = old.version.to_s
           result.root << xml_result
         end
 
           # version is updated in "old" through the update, so we must not
           # return new.version here but old.version!
           xml_result["new_version"] = old.version.to_s
           result.root << xml_result
         end
 

-      elsif action_name == 'delete'
+      elsif action_name == "delete"

         # delete action. this takes a payload in API 0.6, so we need to do
         # most of the same checks that are done for the modify.
         with_model do |model, xml|
           # delete doesn't have to contain a full payload, according to
           # the wiki docs, so we just extract the things we need.
         # delete action. this takes a payload in API 0.6, so we need to do
         # most of the same checks that are done for the modify.
         with_model do |model, xml|
           # delete doesn't have to contain a full payload, according to
           # the wiki docs, so we just extract the things we need.

-          new_id = xml['id'].to_i
+          new_id = xml["id"].to_i

           raise OSM::APIBadXMLError.new(model, xml, "ID attribute is required") if new_id.nil?
 
           # if the ID is a placeholder then map it to the real ID
           raise OSM::APIBadXMLError.new(model, xml, "ID attribute is required") if new_id.nil?
 
           # if the ID is a placeholder then map it to the real ID


@@ -222,8 +220,8 @@ class DiffReader
 
           # build the "new" element by modifying the existing one
           new = model.find(id)
 
           # build the "new" element by modifying the existing one
           new = model.find(id)

-          new.changeset_id = xml['changeset'].to_i
-          new.version = xml['version'].to_i
+          new.changeset_id = xml["changeset"].to_i
+          new.version = xml["version"].to_i

           check(model, xml, new)
 
           # fetch the matching old element from the DB
           check(model, xml, new)
 
           # fetch the matching old element from the DB


@@ -241,7 +239,7 @@ class DiffReader
           if action_attributes["if-unused"]
             begin
               old.delete_with_history!(new, @changeset.user)
           if action_attributes["if-unused"]
             begin
               old.delete_with_history!(new, @changeset.user)

-            rescue OSM::APIAlreadyDeletedError, OSM::APIPreconditionFailedError => ex
+            rescue OSM::APIAlreadyDeletedError, OSM::APIPreconditionFailedError

               xml_result["new_id"] = old.id.to_s
               xml_result["new_version"] = old.version.to_s
             end
               xml_result["new_id"] = old.id.to_s
               xml_result["new_version"] = old.version.to_s
             end


@@ -259,7 +257,6 @@ class DiffReader
     end
 
     # return the XML document to be rendered back to the client
     end
 
     # return the XML document to be rendered back to the client

-    return result
+    result

   end
   end

-

 end
 end