try {
      writeSelfReferencingJarFile(jarFile, "test.txt");
      assertThat(
              new ClassPath.LocationInfo(jarFile, ClassPathTest.class.getClassLoader())
                  .scanResources())
          .hasSize(1);
    } finally {
      jarFile.delete();
    }
  }


  public void testScanFromFile_fileNotExists() throws IOException {
    ClassLoader classLoader = ClassPathTest.class.getClassLoader();

      String value = String.valueOf(i);
      builder.put(key, value);
      expected.put(key, value);
    }
    ImmutableMap<Integer, String> map = builder.buildKeepingLast();
    assertThat(map).hasSize(500);
    assertThat(map).containsExactlyEntriesIn(expected).inOrder();
  }

  // This method tests the int case.
  public void testBuildKeepingLast_bigTable() {