SimpleGraph(SimpleGraph) plus tests.

sbromberger · Aug 22, 2018 · 7ebbd6a · 7ebbd6a
1 parent 80249ae
commit 7ebbd6a
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diff --git a/src/SimpleGraphs/simplegraph.jl b/src/SimpleGraphs/simplegraph.jl
@@ -21,6 +21,9 @@ end
 # SimpleGraph()
 SimpleGraph() = SimpleGraph{Int}()
 
+# SimpleGraph of a SimpleGraph
+SimpleGraph(g::SimpleGraph) = copy(g)
+
 # SimpleGraph(6), SimpleGraph(0x5)
 SimpleGraph(n::T) where T <: Integer = SimpleGraph{T}(n)
 

diff --git a/test/simplegraphs/simplegraphs.jl b/test/simplegraphs/simplegraphs.jl
@@ -88,6 +88,16 @@ import Random
         ga = SimpleGraph(10)
         @test @inferred(eltype(SimpleGraph{T}(ga))) == T
 
+        gx = CompleteGraph(4)
+        for g in testgraphs(gx)
+            h = Graph(g)
+            @test g == h
+            @test rem_vertex!(g, 2)
+            @test nv(g) == 3 && ne(g) == 3
+            @test g != h
+        end
+
+
         for gd in testdigraphs(gdx)
             U = eltype(gd)
             @test @inferred(eltype(SimpleGraph(gd))) == U