X-Git-Url: https://git.ladys.computer/Pisces/blobdiff_plain/e8d0d3ab4f8a844e15873345c0564929c80fdb74..3edbac676b6d5d58417dc813f9deefbe21d12a96:/object.test.js

diff --git a/object.test.js b/object.test.js
index da890d3..2b6cbb8 100644
--- a/object.test.js
+++ b/object.test.js
@@ -22,12 +22,251 @@ import {
   defineOwnProperties,
   deleteOwnProperty,
   frozenCopy,
+  LazyLoader,
   PropertyDescriptor,
   setPropertyValue,
   toObject,
   toPropertyKey,
 } from "./object.js";
 
+describe("LazyLoader", () => {
+  const symbol = Symbol();
+  const prototype = {};
+  const etaoinMethod = spy(() => "success");
+  const shrdluMethod = spy(() => "success");
+  const cmfwypMethod = spy(() => "success");
+  const vbgkqjMethod = spy(() => "success");
+  const methodsObject = Object.create(
+    prototype,
+    {
+      etaoin: {
+        configurable: false,
+        enumerable: true,
+        value: etaoinMethod,
+        writable: false,
+      },
+      shrdlu: {
+        configurable: true,
+        enumerable: false,
+        value: shrdluMethod,
+        writable: false,
+      },
+      cmfwyp: {
+        configurable: true,
+        enumerable: false,
+        get() {
+          return cmfwypMethod;
+        },
+      },
+      vbgkqj: {
+        configurable: false,
+        enumerable: true,
+        get() {
+          return vbgkqjMethod;
+        },
+        set(_) {},
+      },
+      xzfiflffffi: { configurable: true, enumerable: false, set(_) {} },
+      [symbol]: {
+        configurable: true,
+        enumerable: false,
+        value: "failure",
+        writable: true,
+      },
+    },
+  );
+
+  it("[[Construct]] creates a new object which inherits from the correct prototype", () => {
+    assertStrictEquals(
+      Object.getPrototypeOf(new LazyLoader(methodsObject)),
+      prototype,
+    );
+  });
+
+  it("[[Construct]] creates a new object with the desired properties", () => {
+    assertEquals(
+      Reflect.ownKeys(new LazyLoader(methodsObject)),
+      ["etaoin", "shrdlu", "cmfwyp", "vbgkqj", "xzfiflffffi", symbol],
+    );
+  });
+
+  it("[[Construct]] creates a new object with configurable properties", () => {
+    assertEquals(
+      Object.fromEntries(
+        function* (ll) {
+          for (const key of Reflect.ownKeys(ll)) {
+            yield [
+              key,
+              Object.getOwnPropertyDescriptor(ll, key).configurable,
+            ];
+          }
+        }(new LazyLoader(methodsObject)),
+      ),
+      {
+        etaoin: true,
+        shrdlu: true,
+        cmfwyp: true,
+        vbgkqj: true,
+        xzfiflffffi: true,
+        [symbol]: true,
+      },
+    );
+  });
+
+  it("[[Construct]] creates a new object with the correct enumerability", () => {
+    assertEquals(
+      Object.fromEntries(
+        function* (ll) {
+          for (const key of Reflect.ownKeys(ll)) {
+            yield [
+              key,
+              Object.getOwnPropertyDescriptor(ll, key).enumerable,
+            ];
+          }
+        }(new LazyLoader(methodsObject)),
+      ),
+      {
+        etaoin: true,
+        shrdlu: false,
+        cmfwyp: false,
+        vbgkqj: true,
+        xzfiflffffi: false,
+        [symbol]: false,
+      },
+    );
+  });
+
+  it("[[Construct]] creates a new object with defined getters", () => {
+    assertEquals(
+      Object.fromEntries(
+        function* (ll) {
+          for (const key of Reflect.ownKeys(ll)) {
+            yield [
+              key,
+              Object.getOwnPropertyDescriptor(ll, key).get !== void {},
+            ];
+          }
+        }(new LazyLoader(methodsObject)),
+      ),
+      {
+        etaoin: true,
+        shrdlu: true,
+        cmfwyp: true,
+        vbgkqj: true,
+        xzfiflffffi: true,
+        [symbol]: true,
+      },
+    );
+  });
+
+  it("[[Construct]] creates a new object with defined setters for writable properties only", () => {
+    assertEquals(
+      Object.fromEntries(
+        function* (ll) {
+          for (const key of Reflect.ownKeys(ll)) {
+            yield [
+              key,
+              Object.getOwnPropertyDescriptor(ll, key).set !== void {},
+            ];
+          }
+        }(new LazyLoader(methodsObject)),
+      ),
+      {
+        etaoin: false,
+        shrdlu: false,
+        cmfwyp: false,
+        vbgkqj: false,
+        xzfiflffffi: false,
+        [symbol]: true,
+      },
+    );
+  });
+
+  describe("[[Construct]] creates a new object with correct getter behaviour", () => {
+    const ll = new LazyLoader(methodsObject);
+    ll.etaoin;
+    assertEquals(
+      Object.getOwnPropertyDescriptor(ll, "etaoin"),
+      {
+        configurable: false,
+        enumerable: true,
+        value: "success",
+        writable: false,
+      },
+    );
+    assertSpyCalls(etaoinMethod, 1);
+    assertSpyCall(etaoinMethod, 0, {
+      args: [],
+      self: ll,
+      returned: "success",
+    });
+    ll.shrdlu;
+    assertEquals(
+      Object.getOwnPropertyDescriptor(ll, "shrdlu"),
+      {
+        configurable: true,
+        enumerable: false,
+        value: "success",
+        writable: false,
+      },
+    );
+    assertSpyCalls(shrdluMethod, 1);
+    assertSpyCall(shrdluMethod, 0, {
+      args: [],
+      self: ll,
+      returned: "success",
+    });
+    ll.cmfwyp;
+    assertEquals(
+      Object.getOwnPropertyDescriptor(ll, "cmfwyp"),
+      {
+        configurable: true,
+        enumerable: false,
+        value: "success",
+        writable: false,
+      },
+    );
+    assertSpyCalls(cmfwypMethod, 1);
+    assertSpyCall(cmfwypMethod, 0, {
+      args: [],
+      self: ll,
+      returned: "success",
+    });
+    ll.vbgkqj;
+    assertEquals(
+      Object.getOwnPropertyDescriptor(ll, "vbgkqj"),
+      {
+        configurable: false,
+        enumerable: true,
+        value: "success",
+        writable: false,
+      },
+    );
+    assertSpyCalls(vbgkqjMethod, 1);
+    assertSpyCall(vbgkqjMethod, 0, {
+      args: [],
+      self: ll,
+      returned: "success",
+    });
+    assertThrows(() => ll.xzfiflffffi);
+    assertThrows(() => ll[symbol]);
+  });
+
+  describe("[[Construct]] creates a new object with correct setter behaviour", () => {
+    const ll = new LazyLoader(methodsObject);
+    ll[symbol] = "success";
+    assertEquals(
+      Object.getOwnPropertyDescriptor(ll, symbol),
+      {
+        configurable: true,
+        enumerable: false,
+        value: "success",
+        writable: true,
+      },
+    );
+  });
+});
+
 describe("PropertyDescriptor", () => {
   it("[[Construct]] creates a new PropertyDescriptor", () => {
     assertStrictEquals(