actualSize: 4,
		},
		{
			desc:       "Failure md5 mismatch.",
			src:        bytes.NewReader([]byte("abcd")),
			size:       4,
			actualSize: 4,
			md5hex:     "d41d8cd98f00b204e9800998ecf8427f",
			err: BadDigest{
				"d41d8cd98f00b204e9800998ecf8427f",
				"e2fc714c4727ee9395f324cd2e7f331f",
			},
		},
		{
			desc:       "Failure sha256 mismatch.",
			src:        bytes.NewReader([]byte("abcd")),
			size:       4,

		// Test case - 12.
		// Input to replicate Md5 mismatch.
		{
			bucketName: bucket, objName: object, uploadID: uploadID, PartID: 1, inputMd5: "d41d8cd98f00b204e9800998ecf8427f",
			expectedError: hash.BadDigest{ExpectedMD5: "d41d8cd98f00b204e9800998ecf8427f", CalculatedMD5: "d41d8cd98f00b204e9800998ecf8427e"},
		},
		// Test case - 13.
		// When incorrect sha256 is provided.
		{

	Header     http.Header
	ETag       ETag
	ShouldFail bool
}{
	{Header: http.Header{}, ETag: nil}, // 0
	{Header: http.Header{"Content-Md5": []string{"1B2M2Y8AsgTpgAmY7PhCfg=="}}, ETag: must("d41d8cd98f00b204e9800998ecf8427e")},                             // 1
	{Header: http.Header{"Content-Md5": []string{"sQqNsWTgdUEFt6mb5y4/5Q=="}}, ETag: must("b10a8db164e0754105b7a99be72e3fe5")},                             // 2

    assertTrue(temp.delete());
  }

  public void testHash() throws IOException {
    File asciiFile = getTestFile("ascii.txt");
    File i18nFile = getTestFile("i18n.txt");

    String init = "d41d8cd98f00b204e9800998ecf8427e";
    assertEquals(init, Hashing.md5().newHasher().hash().toString());

    String asciiHash = "e5df5a39f2b8cb71b24e1d8038f93131";
    assertEquals(asciiHash, Files.hash(asciiFile, Hashing.md5()).toString());

    assertTrue(temp.delete());
  }

  public void testHash() throws IOException {
    File asciiFile = getTestFile("ascii.txt");
    File i18nFile = getTestFile("i18n.txt");

    String init = "d41d8cd98f00b204e9800998ecf8427e";
    assertEquals(init, Hashing.md5().newHasher().hash().toString());

    String asciiHash = "e5df5a39f2b8cb71b24e1d8038f93131";
    assertEquals(asciiHash, Files.hash(asciiFile, Hashing.md5()).toString());