Fixes #97: SQLite is now async, optimized, tests

2022-10-21 10:00:43 +02:00
parent b9da9b7965
commit c1a78e0105
65 changed files with 329 additions and 142 deletions
@@ -0,0 +1,88 @@
+import {
+  bench,
+  runBenchmarks,
+} from "https://deno.land/std@0.135.0/testing/bench.ts";
+import { DB } from "./mod.ts";
+
+if (Deno.args[0]) {
+  try {
+    await Deno.remove(Deno.args[0]);
+  } catch (_) {
+    // ignore
+  }
+}
+
+const dbFile = Deno.args[0] || ":memory:";
+const db = new DB(dbFile);
+
+db.query(
+  "CREATE TABLE users (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, balance INTEGER)",
+);
+
+/** Performance of insert statements (1 insert). */
+const names = "Deno Land Peter Parker Clark Kent Robert Parr".split(" ");
+
+bench({
+  name: "insert 10 000 (named)",
+  runs: 100,
+  func: (b): void => {
+    b.start();
+    const query = db.prepareQuery(
+      "INSERT INTO users (name, balance) VALUES (:name, :balance)",
+    );
+    db.query("begin");
+    for (let i = 0; i < 10_000; i++) {
+      query.execute({ name: names[i % names.length], balance: i });
+    }
+    db.query("commit");
+    b.stop();
+  },
+});
+
+bench({
+  name: "insert 10 000 (positional)",
+  runs: 100,
+  func: (b): void => {
+    b.start();
+    const query = db.prepareQuery(
+      "INSERT INTO users (name, balance) VALUES (?, ?)",
+    );
+    db.query("begin");
+    for (let i = 0; i < 10_000; i++) {
+      query.execute([names[i % names.length], i]);
+    }
+    db.query("commit");
+    b.stop();
+  },
+});
+
+/** Performance of select statements (select all; 10_000). */
+bench({
+  name: "select 10 000 (select all)",
+  runs: 100,
+  func: (b): void => {
+    b.start();
+    db.query(
+      "SELECT name, balance FROM users LIMIT 10000",
+    );
+    b.stop();
+  },
+});
+
+/** Performance of select statements (select individually; 10_000). */
+bench({
+  name: "select 10 000 (select first)",
+  runs: 100,
+  func: (b): void => {
+    b.start();
+    const query = db.prepareQuery(
+      "SELECT name, balance FROM users WHERE id = ?",
+    );
+    for (let id = 1; id <= 10_000; id++) {
+      query.first([id]);
+    }
+    b.stop();
+  },
+});
+
+runBenchmarks();