Merged in SimpleCov from master#

[graph.njae.git] / spec / graph / edge_spec.rb

diff --git a/spec/graph/edge_spec.rb b/spec/graph/edge_spec.rb
index bd823bfd919ab882fed7d7267710413018b648e6..23537560ba40be5ce0ef39d277710951b8f43081 100644 (file)
--- a/spec/graph/edge_spec.rb
+++ b/spec/graph/edge_spec.rb
@@ -7,28 +7,38 @@ module GraphNjae
     let(:v2) {Vertex.new :name => :v2}
     let(:v3) {Vertex.new :name => :v3}
 
-    describe "#initialize" do
-      it "creates an empty edge" do
+    describe '#initialize' do
+      it 'creates an empty edge' do
         e = Edge.new
         e.connections.should be_empty
       end
       
-      it "creates an edge with some parameters" do
-        e = Edge.new :value1 => 1, :value2 => "value2", :value3 => :v3
+      it 'creates an edge with some parameters' do
+        e = Edge.new :value1 => 1, :value2 => 'value2', :value3 => :v3
         e.value1.should == 1
-        e.value2.should == "value2"
+        e.value2.should == 'value2'
         e.value3.should == :v3
         e.value4.should be_nil
       end
     end # #initialize
     
-    describe "adds attribues" do
-      it "adds then reports arbitrary attributes" do
+    describe 'adds attribues' do
+      it 'adds then reports arbitrary attributes' do
         e.score = 15
         e.score.should == 15
       end
     end # adds attributes
     
+    describe "#to_s" do
+      it "returns the string form of an edge" do
+        v1 = Vertex.new :name => :v1
+        v2 = Vertex.new :name => :v2
+        e.type = :test
+        e << v1 << v2
+        e.to_s.should == '<E: test [<V: v1>, <V: v2>] >'
+      end
+    end
+    
     describe "#<<" do
       it "adds a new vertex to an edge (with a connection)" do
         e.connections.should be_empty
@@ -45,7 +55,7 @@ module GraphNjae
         v2.edges.should include(e)
       end
       
-      it "adds several vertices to an edge" do
+      it 'adds several vertices to an edge' do
         e.connections.should be_empty
         e << v1 << v2
         e.vertices.should include(v1)
@@ -53,7 +63,7 @@ module GraphNjae
         e.should have(2).vertices
       end
 
-      it "adds a self-loop" do
+      it 'adds a self-loop' do
         e.connections.should be_empty
         e << v1 << v1
         e.vertices.should include(v1)
@@ -62,8 +72,8 @@ module GraphNjae
       end
     end # #<<
     
-    describe "connection_at" do
-      it "returns the connection that links to a vertex" do
+    describe 'connection_at' do
+      it 'returns the connection that links to a vertex' do
         e.connections.should be_empty
         e << v1 << v2
         
@@ -71,14 +81,14 @@ module GraphNjae
         e.connection_at(v2).end.should be v2
       end
       
-      it "returns nil if there is no connection to that vertex" do
+      it 'returns nil if there is no connection to that vertex' do
         e.connections.should be_empty
         e << v1 << v2
         
         e.connection_at(v3).should be nil
       end
       
-      it "returns the vertex for a self-loop" do
+      it 'returns the vertex for a self-loop' do
         e.connections.should be_empty
         e << v1 << v1
         
@@ -86,8 +96,8 @@ module GraphNjae
       end
     end # #connection_at
     
-    describe "other_end" do
-      it "returns the vertex at the other end of the given one" do
+    describe 'other_end' do
+      it 'returns the vertex at the other end of the given one' do
         e.connections.should be_empty
         e << v1 << v2
         
@@ -95,44 +105,42 @@ module GraphNjae
         e.other_end(v2).should be v1
       end
       
-      it "returns the same vertex in a self-loop" do
+      it 'returns the same vertex in a self-loop' do
         e.connections.should be_empty
         e << v1 << v1
         
         e.other_end(v1).should be v1
       end
       
-      it "returns one of the connected edges if given a vertex not connected to it" do
+      it 'returns one of the connected edges if given a vertex not connected to it' do
         e.connections.should be_empty
         e << v1 << v2
         
         [v1, v2].should include e.other_end(v3)
       end 
       
-      it "returns nil if it can't return something sensible" do
+      it 'returns nil if it cannot return something sensible' do
         e.other_end(v1).should be_nil
         e << v1
         e.other_end(v1).should be_nil
       end
     end # other_end
     
-    describe "#to_dot" do
-      it "describes an edge in dot notation" do
+    describe '#to_dot' do
+      it 'describes an edge in dot notation' do
         e << v1 << v2
-
         e.to_dot.should == "#{v1.object_id.to_s} -- #{v2.object_id.to_s};"
       end
       
-      it "describes an edge in dot notation, using given attributes" do
+      it 'describes an edge in dot notation, using given attributes' do
         e << v1 << v2
-        #vdot = v1.to_dot :label => :name, :shape => :shape
-        #vdot.should == "#{v.object_id.to_s} {label = \"vertex\", shape = \"house\"};"
+        e.name = 'Edge name'
+        edot = e.to_dot :label => :name
+        edot.should == "#{v1.object_id.to_s} -- #{v2.object_id.to_s} {label = \"#{e.name}\"};"
       end
-
       
-      it "describes an edge in dot notation, given a block" do
+      it 'describes an edge in dot notation, given a block' do
         e << v1 << v2
-
         e.to_dot {|e| e.object_id.to_s}.should == e.object_id.to_s
       end
     end # dot
@@ -141,8 +149,8 @@ module GraphNjae
   describe Connection do
     let (:c) {Connection.new }
     
-    describe "adds attribues" do
-      it "adds then reports arbitrary attributes" do
+    describe 'adds attribues' do
+      it 'adds then reports arbitrary attributes' do
         c.score = 15
         c.score.should == 15
       end