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// @ts-check
import {  assertEquals,  assertIsError,  assertRejects,  fail,} from "std/testing/asserts.ts";
import readImportMapFile from "./readImportMapFile.mjs";
Deno.test(  "`readImportMapFile` with argument 1 `importMapFileUrl` not a `URL` instance.",  async () => {    await assertRejects(      () =>        readImportMapFile(          // @ts-expect-error Testing invalid.          true,        ),      TypeError,      "Argument 1 `importMapFileUrl` must be a `URL` instance.",    );  },);
Deno.test(  "`readImportMapFile` with a missing file.",  async () => {    const importMapFileUrl = new URL(      "./test/fixtures/readImportMapFile/import-map-missing.json",      import.meta.url,    );
    try {      await readImportMapFile(importMapFileUrl);      fail();    } catch (error) {      assertIsError(        error,        Error,        `Error reading import map file \`${importMapFileUrl.href}\`.`,      );      assertIsError(        error.cause,        Deno.errors.NotFound,      );    }  },);
Deno.test(  "`readImportMapFile` with invalid JSON.",  async () => {    const importMapFileUrl = new URL(      "./test/fixtures/readImportMapFile/import-map-invalid-json.txt",      import.meta.url,    );
    try {      await readImportMapFile(importMapFileUrl);      fail();    } catch (error) {      assertIsError(        error,        Error,        `Invalid JSON in import map file \`${importMapFileUrl.href}\`.`,      );      assertIsError(error.cause, SyntaxError);    }  },);
Deno.test(  "`readImportMapFile` with invalid import map.",  async () => {    const importMapFileUrl = new URL(      "./test/fixtures/readImportMapFile/import-map-invalid-content.json",      import.meta.url,    );
    try {      await readImportMapFile(importMapFileUrl);      fail();    } catch (error) {      assertIsError(        error,        Error,        `Invalid content in import map file \`${importMapFileUrl.href}\`.`,      );      assertIsError(error.cause, TypeError, "Invalid import map.");      assertIsError(        error.cause.cause,        TypeError,        "Import map property `imports` must be an object.",      );    }  },);
Deno.test(  "`readImportMapFile` with valid import map.",  async () => {    const importMapFileUrl = new URL(      "./test/fixtures/readImportMapFile/import-map-valid.json",      import.meta.url,    );
    /** @type {import("./assertImportMap.mjs").ImportMap} */    const importMap = await readImportMapFile(importMapFileUrl);
    assertEquals(      importMap,      {        "imports": {          "a/": "/a/",        },        "scopes": {          "/a/": {            "b": "/c",          },        },      },    );  },);