source: frontend/node_modules/tsconfig-paths/src/__tests__/try-path.test.ts

import { getPathsToTry } from "../try-path";
import { join } from "path";

describe("mapping-entry", () => {
  const abosolutePathMappings = [
    {
      pattern: "longest/pre/fix/*",
      paths: [join("/absolute", "base", "url", "foo2", "bar")],
    },
    { pattern: "pre/fix/*", paths: [join("/absolute", "base", "url", "foo3")] },
    { pattern: "*", paths: [join("/absolute", "base", "url", "foo1")] },
  ];
  const abosolutePathMappingsStarstWithSlash = [
    {
      pattern: "/opt/*",
      paths: [join("/absolute", "src", "aws-layer")],
    },
    {
      pattern: "*",
      paths: [join("/absolute", "src")],
    },
  ];
  it("should return no paths for relative requested module", () => {
    const result = getPathsToTry(
      [".ts", "tsx"],
      abosolutePathMappings,
      "./requested-module"
    );
    // assert.deepEqual(result, undefined);
    expect(result).toBeUndefined();
  });

  it("should return no paths if no pattern match the requested module", () => {
    const result = getPathsToTry(
      [".ts", "tsx"],
      [
        {
          pattern: "longest/pre/fix/*",
          paths: [join("/absolute", "base", "url", "foo2", "bar")],
        },
        {
          pattern: "pre/fix/*",
          paths: [join("/absolute", "base", "url", "foo3")],
        },
      ],
      "requested-module"
    );
    expect(result).toBeUndefined();
  });

  it("should get all paths that matches requested module", () => {
    const result = getPathsToTry(
      [".ts", ".tsx"],
      abosolutePathMappings,
      "longest/pre/fix/requested-module"
    );
    // assert.deepEqual(result, [
    //   // "longest/pre/fix/*"
    //   { type: "file", path: join("/absolute", "base", "url", "foo2", "bar") },
    //   {
    //     type: "extension",
    //     path: join("/absolute", "base", "url", "foo2", "bar.ts"),
    //   },
    //   {
    //     type: "extension",
    //     path: join("/absolute", "base", "url", "foo2", "bar.tsx"),
    //   },
    //   {
    //     type: "package",
    //     path: join("/absolute", "base", "url", "foo2", "bar", "package.json"),
    //   },
    //   {
    //     type: "index",
    //     path: join("/absolute", "base", "url", "foo2", "bar", "index.ts"),
    //   },
    //   {
    //     type: "index",
    //     path: join("/absolute", "base", "url", "foo2", "bar", "index.tsx"),
    //   },
    //   // "*"
    //   { type: "file", path: join("/absolute", "base", "url", "foo1") },
    //   { type: "extension", path: join("/absolute", "base", "url", "foo1.ts") },
    //   { type: "extension", path: join("/absolute", "base", "url", "foo1.tsx") },
    //   {
    //     type: "package",
    //     path: join("/absolute", "base", "url", "foo1", "package.json"),
    //   },
    //   {
    //     type: "index",
    //     path: join("/absolute", "base", "url", "foo1", "index.ts"),
    //   },
    //   {
    //     type: "index",
    //     path: join("/absolute", "base", "url", "foo1", "index.tsx"),
    //   },
    // ]);
    expect(result).toEqual([
      // "longest/pre/fix/*"
      { type: "file", path: join("/absolute", "base", "url", "foo2", "bar") },
      {
        type: "extension",
        path: join("/absolute", "base", "url", "foo2", "bar.ts"),
      },
      {
        type: "extension",
        path: join("/absolute", "base", "url", "foo2", "bar.tsx"),
      },
      {
        type: "package",
        path: join("/absolute", "base", "url", "foo2", "bar", "package.json"),
      },
      {
        type: "index",
        path: join("/absolute", "base", "url", "foo2", "bar", "index.ts"),
      },
      {
        type: "index",
        path: join("/absolute", "base", "url", "foo2", "bar", "index.tsx"),
      },
      // "*"
      { type: "file", path: join("/absolute", "base", "url", "foo1") },
      { type: "extension", path: join("/absolute", "base", "url", "foo1.ts") },
      { type: "extension", path: join("/absolute", "base", "url", "foo1.tsx") },
      {
        type: "package",
        path: join("/absolute", "base", "url", "foo1", "package.json"),
      },
      {
        type: "index",
        path: join("/absolute", "base", "url", "foo1", "index.ts"),
      },
      {
        type: "index",
        path: join("/absolute", "base", "url", "foo1", "index.tsx"),
      },
    ]);
  });

  it("should resolve paths starting with a slash", () => {
    const result = getPathsToTry(
      [".ts"],
      abosolutePathMappingsStarstWithSlash,
      "/opt/utils"
    );
    expect(result).toEqual([
      // "opt/*"
      {
        path: join("/absolute", "src", "aws-layer"),
        type: "file",
      },
      {
        path: join("/absolute", "src", "aws-layer.ts"),
        type: "extension",
      },
      {
        path: join("/absolute", "src", "aws-layer", "package.json"),
        type: "package",
      },
      {
        path: join("/absolute", "src", "aws-layer", "index.ts"),
        type: "index",
      },
      // "*"
      {
        path: join("/absolute", "src"),
        type: "file",
      },
      {
        path: join("/absolute", "src.ts"),
        type: "extension",
      },
      {
        path: join("/absolute", "src", "package.json"),
        type: "package",
      },
      {
        path: join("/absolute", "src", "index.ts"),
        type: "index",
      },
    ]);
  });
});

// describe("match-star", () => {
//   it("should match star in last position", () => {
//     const result = matchStar("lib/*", "lib/mylib");
//     assert.equal(result, "mylib");
//   });
//   it("should match star in first position", () => {
//     const result = matchStar("*/lib", "mylib/lib");
//     assert.equal(result, "mylib");
//   });
// });