fix: performance builtin and tests

builtins/web/fetch/fetch_event.cpp

@@ -1,4 +1,5 @@
 #include "fetch_event.h"
+#include "../performance.h"
 #include "../url.h"
 #include "../worker-location.h"
 #include "encode.h"
@@ -74,6 +75,8 @@ JSObject *FetchEvent::prepare_downstream_request(JSContext *cx) {
 
 bool FetchEvent::init_incoming_request(JSContext *cx, JS::HandleObject self,
                                        host_api::HttpIncomingRequest *req) {
+  builtins::web::performance::Performance::timeOrigin.emplace(
+      std::chrono::high_resolution_clock::now());
   JS::RootedObject request(
       cx, &JS::GetReservedSlot(self, static_cast<uint32_t>(Slots::Request)).toObject());
 

builtins/web/performance.cpp

@@ -67,7 +67,13 @@ bool Performance::init_class(JSContext *cx, JS::HandleObject global) {
 }
 
 bool install(api::Engine *engine) {
-  return Performance::init_class(engine->cx(), engine->global());
+  if (!Performance::init_class(engine->cx(), engine->global())) {
+    return false;
+  }
+  if (!Performance::create(engine->cx(), engine->global())) {
+    return false;
+  }
+  return true;
 }
 
 } // namespace performance

tests/integration/handlers.js

@@ -1,2 +1,3 @@
 export { handler as btoa } from './btoa/btoa.js';
+export { handler as performance } from './performance/performance.js';
 export { handler as timers } from './timers/timers.js';

tests/integration/performance/performance.js

@@ -0,0 +1,283 @@
+import { serveTest } from "../test-server.js";
+import { assert, deepStrictEqual, strictEqual } from "../assert.js";
+
+export const handler = serveTest(async (t) => {
+  t.test("Performance-interface", () => {
+    {
+      let actual = Reflect.ownKeys(Performance);
+      let expected = ["prototype", "length", "name"];
+      deepStrictEqual(actual, expected, `Reflect.ownKeys(Performance)`);
+    }
+
+    // Check the prototype descriptors are correct
+    {
+      let actual = Reflect.getOwnPropertyDescriptor(Performance, "prototype");
+      let expected = {
+        value: Performance.prototype,
+        writable: false,
+        enumerable: false,
+        configurable: false,
+      };
+      deepStrictEqual(
+        actual,
+        expected,
+        `Reflect.getOwnPropertyDescriptor(Performance, 'prototype')`
+      );
+    }
+
+    // Check the constructor function's defined parameter length is correct
+    {
+      let actual = Reflect.getOwnPropertyDescriptor(Performance, "length");
+      let expected = {
+        value: 0,
+        writable: false,
+        enumerable: false,
+        configurable: true,
+      };
+      deepStrictEqual(
+        actual,
+        expected,
+        `Reflect.getOwnPropertyDescriptor(Performance, 'length')`
+      );
+    }
+
+    // Check the constructor function's name is correct
+    {
+      let actual = Reflect.getOwnPropertyDescriptor(Performance, "name");
+      let expected = {
+        value: "Performance",
+        writable: false,
+        enumerable: false,
+        configurable: true,
+      };
+      deepStrictEqual(
+        actual,
+        expected,
+        `Reflect.getOwnPropertyDescriptor(Performance, 'name')`
+      );
+    }
+
+    // Check the prototype has the correct keys
+    {
+      let actual = Reflect.ownKeys(Performance.prototype);
+      let expected = ["constructor", "timeOrigin", "now", Symbol.toStringTag];
+      deepStrictEqual(
+        actual,
+        expected,
+        `Reflect.ownKeys(Performance.prototype)`
+      );
+    }
+
+    // Check the constructor on the prototype is correct
+    {
+      let actual = Reflect.getOwnPropertyDescriptor(
+        Performance.prototype,
+        "constructor"
+      );
+      let expected = {
+        writable: true,
+        enumerable: false,
+        configurable: true,
+        value: Performance.prototype.constructor,
+      };
+      deepStrictEqual(
+        actual,
+        expected,
+        `Reflect.getOwnPropertyDescriptor(Performance.prototype, 'constructor')`
+      );
+
+      strictEqual(
+        typeof Performance.prototype.constructor,
+        "function",
+        `typeof Performance.prototype.constructor`
+      );
+    }
+
+    {
+      let actual = Reflect.getOwnPropertyDescriptor(
+        Performance.prototype.constructor,
+        "length"
+      );
+      let expected = {
+        value: 0,
+        writable: false,
+        enumerable: false,
+        configurable: true,
+      };
+      assert(
+        actual,
+        expected,
+        `Reflect.getOwnPropertyDescriptor(Performance.prototype.constructor, 'length')`
+      );
+    }
+
+    {
+      let actual = Reflect.getOwnPropertyDescriptor(
+        Performance.prototype.constructor,
+        "name"
+      );
+      let expected = {
+        value: "Performance",
+        writable: false,
+        enumerable: false,
+        configurable: true,
+      };
+      assert(
+        actual,
+        expected,
+        `Reflect.getOwnPropertyDescriptor(Performance.prototype.constructor, 'name')`
+      );
+    }
+
+    // Check the Symbol.toStringTag on the prototype is correct
+    {
+      let actual = Reflect.getOwnPropertyDescriptor(
+        Performance.prototype,
+        Symbol.toStringTag
+      );
+      let expected = {
+        value: "performance",
+        writable: false,
+        enumerable: false,
+        configurable: true,
+      };
+      assert(
+        actual,
+        expected,
+        `Reflect.getOwnPropertyDescriptor(Performance.prototype, [Symbol.toStringTag])`
+      );
+
+      assert(
+        typeof Performance.prototype[Symbol.toStringTag],
+        "string",
+        `typeof Performance.prototype[Symbol.toStringTag]`
+      );
+    }
+
+    // Check the timeOrigin property is correct
+    {
+      let descriptors = Reflect.getOwnPropertyDescriptor(
+        Performance.prototype,
+        "timeOrigin"
+      );
+      let expected = { enumerable: true, configurable: true };
+      assert(
+        descriptors.enumerable,
+        true,
+        `Reflect.getOwnPropertyDescriptor(Performance, 'timeOrigin').enumerable`
+      );
+      assert(
+        descriptors.configurable,
+        true,
+        `Reflect.getOwnPropertyDescriptor(Performance, 'timeOrigin').configurable`
+      );
+      assert(
+        descriptors.value,
+        undefined,
+        `Reflect.getOwnPropertyDescriptor(Performance, 'timeOrigin').value`
+      );
+      assert(
+        descriptors.set,
+        undefined,
+        `Reflect.getOwnPropertyDescriptor(Performance, 'timeOrigin').set`
+      );
+      assert(
+        typeof descriptors.get,
+        "function",
+        `typeof Reflect.getOwnPropertyDescriptor(Performance, 'timeOrigin').get`
+      );
+
+      assert(
+        typeof Performance.prototype.timeOrigin,
+        "number",
+        `typeof Performance.prototype.timeOrigin`
+      );
+    }
+
+    // Check the now property is correct
+    {
+      let actual = Reflect.getOwnPropertyDescriptor(
+        Performance.prototype,
+        "now"
+      );
+      let expected = {
+        writable: true,
+        enumerable: true,
+        configurable: true,
+        value: Performance.prototype.now,
+      };
+      assert(
+        actual,
+        expected,
+        `Reflect.getOwnPropertyDescriptor(Performance, 'now')`
+      );
+
+      assert(
+        typeof Performance.prototype.now,
+        "function",
+        `typeof Performance.prototype.now`
+      );
+    }
+
+    {
+      let actual = Reflect.getOwnPropertyDescriptor(
+        Performance.prototype.now,
+        "length"
+      );
+      let expected = {
+        value: 0,
+        writable: false,
+        enumerable: false,
+        configurable: true,
+      };
+      assert(
+        actual,
+        expected,
+        `Reflect.getOwnPropertyDescriptor(Performance.prototype.now, 'length')`
+      );
+    }
+
+    {
+      let actual = Reflect.getOwnPropertyDescriptor(
+        Performance.prototype.now,
+        "name"
+      );
+      let expected = {
+        value: "now",
+        writable: false,
+        enumerable: false,
+        configurable: true,
+      };
+      assert(
+        actual,
+        expected,
+        `Reflect.getOwnPropertyDescriptor(Performance.prototype.now, 'name')`
+      );
+    }
+  });
+
+  t.test("globalThis.performance", () => {
+    assert(
+      globalThis.performance instanceof Performance,
+      true,
+      `globalThis.performance instanceof Performance`
+    );
+  });
+
+  t.test("globalThis.performance.now", () => {
+    throws(() => new performance.now());
+    assert(typeof performance.now(), "number");
+    assert(performance.now() > 0, true);
+    assert(Number.isNaN(performance.now()), false);
+    assert(Number.isFinite(performance.now()), true);
+    assert(performance.now() < Date.now(), true);
+  });
+
+  t.test("globalThis.performance.timeOrigin", () => {
+    assert(typeof performance.timeOrigin, "number");
+    assert(performance.timeOrigin > 0, true);
+    assert(Number.isNaN(performance.timeOrigin), false);
+    assert(Number.isFinite(performance.timeOrigin), true);
+    assert(performance.timeOrigin < Date.now(), true);
+  });
+});