Handle empty spans in invert_spans (#48) (#49)

(cherry picked from commit 97d628f)
beacon-biosignals · Oct 12, 2022 · d798ede · d798ede · ararslan · Oct 12, 2022
1 parent e9ec7a5
commit d798ede
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Showing 3 changed files with 5 additions and 1 deletion.
diff --git a/Project.toml b/Project.toml
@@ -1,7 +1,7 @@
 name = "TimeSpans"
 uuid = "bb34ddd2-327f-4c4a-bfb0-c98fc494ece1"
 authors = ["Beacon Biosignals, Inc."]
-version = "0.2.9"
+version = "0.2.10"
 
 [deps]
 Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"

diff --git a/src/TimeSpans.jl b/src/TimeSpans.jl
@@ -363,6 +363,7 @@ Return a vector of `TimeSpan`s representing the gaps between the spans in the
 iterable `spans` that are contained within `parent_span`.
 """
 function invert_spans(spans, parent_span)
+    isempty(spans) && return [TimeSpan(parent_span)]
     spans = collect(spans)
     filter!(x -> contains(parent_span, x), spans)
     merge_spans!((a, b) -> start(b) <= stop(a), spans)

diff --git a/test/runtests.jl b/test/runtests.jl
@@ -185,6 +185,9 @@ end
     i_spans = invert_spans(spans, parent_span)
     @test length(i_spans) == 6
     @test all(duration.(i_spans) .== Second(8))
+
+    # empty
+    @test invert_spans(TimeSpan[], parent_span) == [parent_span]
 end
 
 @testset "broadcast_spans" begin