Add rudimentary tests

examples/import_bench.jl

@@ -1,28 +1,33 @@
-using metagraph_optimization
+using MetagraphOptimization
 using BenchmarkTools
 using Base
 using Base.Filesystem
 
-function bench_txt(filepath::String)
+function bench_txt(filepath::String, bench::Bool = true)
     name = basename(filepath)
     name, _ = splitext(name)
 
+    filepath = joinpath(@__DIR__, filepath)
+
     println(name, ":")
     g = import_txt(filepath)
     print(g)
     println("  Graph size in memory: ", bytes_to_human_readable(Base.summarysize(g)))
-    @btime import_txt($filepath)
-    println()
+
+    if (bench)
+        @btime import_txt($filepath)
+        println()
+    end
 end
 
-function main()
-    bench_txt("examples/AB->AB.txt")
-    bench_txt("examples/AB->ABBB.txt")
-    bench_txt("examples/AB->ABBBBB.txt")
-    bench_txt("examples/AB->ABBBBBBB.txt")
-    #bench_txt("examples/AB->ABBBBBBBBB.txt")
-    bench_txt("examples/ABAB->ABAB.txt")
-    bench_txt("examples/ABAB->ABC.txt")
+function import_bench()
+    bench_txt("AB->AB.txt")
+    bench_txt("AB->ABBB.txt")
+    bench_txt("AB->ABBBBB.txt")
+    bench_txt("AB->ABBBBBBB.txt")
+    bench_txt("AB->ABBBBBBBBB.txt", false)
+    bench_txt("ABAB->ABAB.txt")
+    bench_txt("ABAB->ABC.txt")
 end
 
-main()
+import_bench()