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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.import { assertInstanceOf, AssertionError, assertThrows } from "./mod.ts";
Deno.test({  name: "assertInstanceOf",  fn() {    class TestClass1 {}    class TestClass2 {}    class TestClass3 {}
    // Regular types    assertInstanceOf(new Date(), Date);    assertInstanceOf(new Number(), Number);    assertInstanceOf(Promise.resolve(), Promise);    assertInstanceOf(new TestClass1(), TestClass1);
    // Throwing cases    assertThrows(      () => assertInstanceOf(new Date(), RegExp),      AssertionError,      `Expected object to be an instance of "RegExp" but was "Date".`,    );    assertThrows(      () => assertInstanceOf(5, Date),      AssertionError,      `Expected object to be an instance of "Date" but was "number".`,    );    assertThrows(      () => assertInstanceOf(new TestClass1(), TestClass2),      AssertionError,      `Expected object to be an instance of "TestClass2" but was "TestClass1".`,    );
    // Custom message    assertThrows(      () => assertInstanceOf(new Date(), RegExp, "Custom message"),      AssertionError,      "Custom message",    );
    // Edge cases    assertThrows(      () => assertInstanceOf(5, Number),      AssertionError,      `Expected object to be an instance of "Number" but was "number".`,    );
    let TestClassWithSameName: new () => unknown;    {      class TestClass3 {}      TestClassWithSameName = TestClass3;    }    assertThrows(      () => assertInstanceOf(new TestClassWithSameName(), TestClass3),      AssertionError,      `Expected object to be an instance of "TestClass3".`,    );
    assertThrows(      () => assertInstanceOf(TestClass1, TestClass1),      AssertionError,      `Expected object to be an instance of "TestClass1" but was not an instanced object.`,    );    assertThrows(      () => assertInstanceOf(() => {}, TestClass1),      AssertionError,      `Expected object to be an instance of "TestClass1" but was not an instanced object.`,    );    assertThrows(      () => assertInstanceOf(null, TestClass1),      AssertionError,      `Expected object to be an instance of "TestClass1" but was "null".`,    );    assertThrows(      () => assertInstanceOf(undefined, TestClass1),      AssertionError,      `Expected object to be an instance of "TestClass1" but was "undefined".`,    );    assertThrows(      () => assertInstanceOf({}, TestClass1),      AssertionError,      `Expected object to be an instance of "TestClass1" but was "Object".`,    );    assertThrows(      () => assertInstanceOf(Object.create(null), TestClass1),      AssertionError,      `Expected object to be an instance of "TestClass1" but was "Object".`,    );
    // Test TypeScript types functionality, wrapped in a function that never runs    // deno-lint-ignore no-unused-vars    function typeScriptTests() {      class ClassWithProperty {        property = "prop1";      }      const testInstance = new ClassWithProperty() as unknown;
      // @ts-expect-error: `testInstance` is `unknown` so setting its property before `assertInstanceOf` should give a type error.      testInstance.property = "prop2";
      assertInstanceOf(testInstance, ClassWithProperty);
      // Now `testInstance` should be of type `ClassWithProperty`      testInstance.property = "prop3";
      let x = 5 as unknown;
      // @ts-expect-error: `x` is `unknown` so adding to it shouldn't work      x += 5;      assertInstanceOf(x, Number);
      // @ts-expect-error: `x` is now `Number` rather than `number`, so this should still give a type error.      x += 5;    }  },});