{"abcd:2345::/63", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2345::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:fffe::"))}, nil},
	{"abcd:2345::/33", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2345::"), Mask: IPMask(ParseIP("ffff:ffff:8000::"))}, nil},
	{"abcd:2345::/32", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2345::"), Mask: IPMask(ParseIP("ffff:ffff::"))}, nil},

		},
		// Test Case - 4.
		// Test case with AccessKey of length 2.
		{
			inputCredentialStr: generateCredentialStr(
				"^#",
				UTCNow().Format(yyyymmdd),
				"ABCD",
				"ABCD",
				"ABCD"),
			expectedCredentials: credentialHeader{},
			expectedErrCode:     ErrInvalidAccessKeyID,
		},
		// Test Case - 5.
		// Test case with invalid date format date.

		t.Fatalf("expect 4 abcd but got %s. r.w=%d, r.r=%d", rb.Bytes(nil), rb.w, rb.r)
	}

	// check empty or full
	if rb.IsEmpty() {
		t.Fatalf("expect IsEmpty is false but got true")
	}
	if rb.IsFull() {
		t.Fatalf("expect IsFull is false but got true")
	}

	// write 48 bytes, should full
	n, err = rb.Write([]byte(strings.Repeat("abcd", 12)))
	if err != nil {

		commonPrefix string
	}{
		{[]string{"", ""}, ""},
		{[]string{"a", "b"}, ""},
		{[]string{"a", "a"}, "a"},
		{[]string{"a/", "a/"}, "a/"},
		{[]string{"abcd/", ""}, ""},
		{[]string{"abcd/foo/", "abcd/bar/"}, "abcd/"},
		{[]string{"abcd/foo/bar/", "abcd/foo/bar/zoo"}, "abcd/foo/bar/"},
	}

	for i, test := range testCases {
		foundPrefix := lcp(test.prefixes, true)
		if foundPrefix != test.commonPrefix {

				Message:  "Access Denied.",
			},
			shouldPass: false,
		},
		// GET wrong credentials
		{
			method: http.MethodGet, bucketName: bucketName,
			accessKey:          "abcd",
			secretKey:          "abcd",
			expectedRespStatus: http.StatusForbidden,
			lifecycleResponse:  []byte(""),
			errorResponse: APIErrorResponse{
				Resource: SlashSeparator + bucketName + SlashSeparator,

		9: {
			bucketName: bucket, objName: object, inputData: []byte("abcd"),
			inputMeta: map[string]string{"etag": "900150983cd24fb0d6963f7d28e17f73"}, inputDataSize: int64(len("abcd") - 1),
			expectedError: ioutil.ErrOverread,
		},

		// Validating for success cases.

	testCases := []struct {
		s  string
		ok bool
	}{
		{`<x:book xmlns:x="abcd" xmlns:y="abcd"><unclosetag>one</x:book>`, false},
		{`<x:book xmlns:x="abcd" xmlns:y="abcd">one</x:book>`, true},
		{`<x:book xmlns:x="abcd" xmlns:y="abcd">one</y:book>`, false},
		{`<x:book xmlns:y="abcd" xmlns:x="abcd">one</y:book>`, false},
		{`<x:book xmlns:x="abcd">one</y:book>`, false},
		{`<x:book>one</y:book>`, false},

			{
				bad: []string{"ip:2000:abcd::/32"},
			},
		},
		intermediates: [][]constraintsSpec{
			{
				{},
			},
		},
		leaf: leafSpec{
			sans: []string{"ip:2000:abcd::"},
		},
		expectedError: "\"2000:abcd::\" is excluded",
	},

	// #36: IPv6 constraints do not permit IPv4 addresses.
	{
		roots: []constraintsSpec{
			{
				ok: []string{"ip:2000:abcd::/32"},
			},
		},

			errorResponse: APIErrorResponse{},
			shouldPass:    true,
		},
		// Test case - 2.
		// Tests for signature mismatch error.
		{
			bucketName:         bucketName,
			accessKey:          "abcd",
			secretKey:          "abcd",
			expectedRespStatus: http.StatusForbidden,
			locationResponse:   []byte(""),
			errorResponse: APIErrorResponse{
				Resource: SlashSeparator + bucketName + SlashSeparator,

		},
		{
			name: "Empty",
			args: args{ports: []string{}},
			want: []string{},
		},
		{
			name: "Non-parseable",
			args: args{ports: []string{"abcd", "2345", "abcd"}},
			want: []string{"abcd", "2345"},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := dedupPorts(tt.args.ports); !reflect.DeepEqual(got, tt.want) {