Add benching (denoland/deno_std#185)

Original: https://github.com/denoland/deno_std/commit/0a160c392521f643237cb4890ff64dac6e5e3a6b

1 files changed, 50 insertions, 0 deletions

diff --git a/benching/test.ts b/benching/test.ts
new file mode 100644
index 000000000..81cbc5e6f
--- /dev/null
+++ b/benching/test.ts
@@ -0,0 +1,50 @@
+import { test } from "../testing/mod.ts";
+import { bench, runBenchmarks, BenchmarkTimer } from "./mod.ts";
+
+import "example.ts";
+
+test(async function benching() {
+  bench(function forIncrementX1e9(b: BenchmarkTimer) {
+    b.start();
+    for (let i: number = 0; i < 1e9; i++);
+    b.stop();
+  });
+
+  bench(function forDecrementX1e9(b: BenchmarkTimer) {
+    b.start();
+    for (let i: number = 1e9; i > 0; i--);
+    b.stop();
+  });
+
+  bench(async function forAwaitFetchDenolandX10(b: BenchmarkTimer) {
+    b.start();
+    for (let i: number = 0; i < 10; i++) {
+      await fetch("https://deno.land/");
+    }
+    b.stop();
+  });
+
+  bench(async function promiseAllFetchDenolandX10(b: BenchmarkTimer) {
+    const urls = new Array(10).fill("https://deno.land/");
+    b.start();
+    await Promise.all(urls.map((denoland: string) => fetch(denoland)));
+    b.stop();
+  });
+
+  bench({
+    name: "runs100ForIncrementX1e6",
+    runs: 100,
+    func(b: BenchmarkTimer) {
+      b.start();
+      for (let i: number = 0; i < 1e6; i++);
+      b.stop();
+    }
+  });
+
+  bench(function throwing(b: BenchmarkTimer) {
+    b.start();
+    // Throws bc the timer's stop method is never called
+  });
+
+  await runBenchmarks({ skip: /throw/ });
+});