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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.import {  assert,  assertEquals,  AssertionError,  assertThrows,  fail,} from "./mod.ts";
Deno.test("assertThrows() throws when thrown error class does not match expected", () => {  assertThrows(    () => {      //This next assertThrows will throw an AssertionError due to the wrong      //expected error class      assertThrows(        () => {          fail("foo");        },        TypeError,        "Failed assertion: foo",      );    },    AssertionError,    `Expected error to be instance of "TypeError", but was "AssertionError"`,  );});
Deno.test("assertThrows() changes its return type by parameter", () => {  assertThrows(() => {    throw new Error();  });});
Deno.test("assertThrows() throws when error class is expected but non-error value is thrown", () => {  assertThrows(    () => {      assertThrows(        () => {          throw "Panic!";        },        Error,        "Panic!",      );    },    AssertionError,    "A non-Error object was thrown.",  );});
Deno.test("assertThrows() matches thrown non-error value", () => {  assertThrows(    () => {      throw "Panic!";    },  );  assertThrows(    () => {      throw null;    },  );  assertThrows(    () => {      throw undefined;    },  );});
Deno.test("assertThrows() matches thrown error with given error class", () => {  assertThrows(    () => {      throw new Error("foo");    },    Error,    "foo",  );});
Deno.test("assertThrows() matches and returns thrown error value", () => {  const error = assertThrows(    () => {      throw new Error("foo");    },  );  assert(error instanceof Error);  assertEquals(error.message, "foo");});
Deno.test("assertThrows() matches and returns thrown non-error", () => {  const stringError = assertThrows(    () => {      throw "Panic!";    },  );  assert(typeof stringError === "string");  assertEquals(stringError, "Panic!");
  const numberError = assertThrows(    () => {      throw 1;    },  );  assert(typeof numberError === "number");  assertEquals(numberError, 1);
  const nullError = assertThrows(    () => {      throw null;    },  );  assert(nullError === null);
  const undefinedError = assertThrows(    () => {      throw undefined;    },  );  assert(typeof undefinedError === "undefined");  assertEquals(undefinedError, undefined);});
Deno.test("assertThrows() matches subclass of expected error", () => {  assertThrows(    () => {      throw new AssertionError("Fail!");    },    Error,    "Fail!",  );});