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Fix non-empty RDF.Graph when adding empty RDF.Description (#8)

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pukkamustard 2020-07-03 21:49:06 +00:00 committed by GitHub
parent 0e81f4c02c
commit 2d68a352ed
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2 changed files with 12 additions and 2 deletions
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9
lib/rdf/graph.ex
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@ -177,8 +177,13 @@ defmodule RDF.Graph do
end) end)
end end
def add(%__MODULE__{} = graph, %Description{subject: subject} = description), def add(%__MODULE__{} = graph, %Description{subject: subject} = description) do
do: do_add(graph, subject, description) if Description.count(description) > 0 do
do_add(graph, subject, description)
else
graph
end
end
def add(graph, %__MODULE__{descriptions: descriptions, prefixes: prefixes}) do def add(graph, %__MODULE__{descriptions: descriptions, prefixes: prefixes}) do
graph = graph =

5
test/unit/graph_test.exs
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@ -98,6 +98,11 @@ defmodule RDF.GraphTest do
assert graph_includes_statement?(g, {EX.Subject, EX.predicate(), EX.Object}) assert graph_includes_statement?(g, {EX.Subject, EX.predicate(), EX.Object})
end end
test "creating an unnamed graph with an empty description" do
g = Graph.new(Description.new(EX.Subject))
assert empty_graph?(g)
end
test "creating a named graph from another graph" do test "creating a named graph from another graph" do
g = g =
Graph.new(Graph.new({EX.Subject, EX.predicate(), EX.Object}), Graph.new(Graph.new({EX.Subject, EX.predicate(), EX.Object}),