- assert [url1, url2] == Instances.filter_reachable([host, url1, url2])
+ result = Instances.filter_reachable([host, url1, url2, nil])
+ %{result: result, url1: url1, url2: url2}
+ end
+
+ test "returns a map with keys containing 'not marked consistently unreachable' elements of supplied list",
+ %{result: result, url1: url1, url2: url2} do
+ assert is_map(result)
+ assert Enum.sort([url1, url2]) == result |> Map.keys() |> Enum.sort()
+ end
+
+ test "returns a map with `unreachable_since` values for keys",
+ %{result: result, url1: url1, url2: url2} do
+ assert is_map(result)
+ assert %NaiveDateTime{} = result[url1]
+ assert is_nil(result[url2])
+ end
+
+ test "returns an empty map for empty list or list containing no hosts / url" do
+ assert %{} == Instances.filter_reachable([])
+ assert %{} == Instances.filter_reachable([nil])