bench: add benchmark ips for measuring performance

Author: initdc

bench.cr

@@ -0,0 +1,59 @@
+require "benchmark"
+require "./src/types"
+
+n = 1000
+
+calculation = 1.seconds
+warmup = 2.seconds
+
+Benchmark.ips(calculation, warmup) do |x|
+  x.report("Some()") do
+    n.times do
+      Some(Int32)[0]
+    end
+  end
+
+  x.report("Some.new") do
+    n.times do
+      Some.new(0)
+    end
+  end
+
+  x.report("None()") do
+    n.times do
+      None(Int32)[]
+    end
+  end
+
+  x.report("None.new") do
+    n.times do
+      None(Int32).new
+    end
+  end
+end
+
+Benchmark.ips(calculation, warmup) do |x|
+  x.report("Ok()") do
+    n.times do
+      Ok(Int32, Int32)[0]
+    end
+  end
+
+  x.report("Ok.new") do
+    n.times do
+      Ok(Int32, Int32).new(0)
+    end
+  end
+
+  x.report("Err()") do
+    n.times do
+      Err(Int32, Int32)[0]
+    end
+  end
+
+  x.report("Err.new") do
+    n.times do
+      Err(Int32, Int32).new(0)
+    end
+  end
+end