Apply suggestion from @gdalle

gdalle · web-flow · commit 9caca0f459ed · 2026-01-29T18:35:31.000+01:00
diff --git a/test/check.jl b/test/check.jl
@@ -316,5 +316,6 @@ end
     algo = GreedyColoringAlgorithm(; decompression=:substitution)
     S = spzeros(Int, 0, 0)
     result = coloring(S, problem, algo)
+    @test isempty(result.color)
     @test isempty(result.group)
 end
