import { FilesizePipe } from "./filesize.pipe";

describe("src/app/opportunity/pipes/filesize.pipe.spec.ts", () => {
  const pipe = new FilesizePipe();

  it("FilesizePipe: adds the proper symbol", () => {
    expect(pipe.transform(1024)).toBe("1 KB");
    expect(pipe.transform(1048576)).toBe("1 MB");
    expect(pipe.transform(1073741824)).toBe("1 GB");
    expect(pipe.transform(1099511627776)).toBe("1 TB");
  });

  // Any size under 1 KB should show as <1 KB
  it("FilesizePipe: shows <1 KB if under 1 KB", () => {
    expect(pipe.transform(-100)).toBe("<1 KB"); //negative and 0 filesizes included
    expect(pipe.transform(0)).toBe("<1 KB");
    expect(pipe.transform(1)).toBe("<1 KB");
    expect(pipe.transform(387)).toBe("<1 KB");
    expect(pipe.transform(501)).toBe("<1 KB");
    expect(pipe.transform(1023.9)).toBe("<1 KB"); //filesizes <1 KB should never get rounded up to 1 KB
  });

  it("FilesizePipe: rounds correctly", () => {
    const kb = 1024;
    const mb = 1048576;
    expect(pipe.transform(1.5 * kb - 1)).toBe("1 KB");
    expect(pipe.transform(1.5 * kb + 1)).toBe("2 KB");
    expect(pipe.transform(5.5 * mb - 1)).toBe("5 MB");
  });
});