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// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package tls

import (
        "testing"
)

func TestRoundUp(t *testing.T) {
        if roundUp(0, 16) != 0 ||
                roundUp(1, 16) != 16 ||
                roundUp(15, 16) != 16 ||
                roundUp(16, 16) != 16 ||
                roundUp(17, 16) != 32 {
                t.Error("roundUp broken")
        }
}

var paddingTests = []struct {
        in          []byte
        good        bool
        expectedLen int
}{
        {[]byte{1, 2, 3, 4, 0}, true, 4},
        {[]byte{1, 2, 3, 4, 0, 1}, false, 0},
        {[]byte{1, 2, 3, 4, 99, 99}, false, 0},
        {[]byte{1, 2, 3, 4, 1, 1}, true, 4},
        {[]byte{1, 2, 3, 2, 2, 2}, true, 3},
        {[]byte{1, 2, 3, 3, 3, 3}, true, 2},
        {[]byte{1, 2, 3, 4, 3, 3}, false, 0},
        {[]byte{1, 4, 4, 4, 4, 4}, true, 1},
        {[]byte{5, 5, 5, 5, 5, 5}, true, 0},
        {[]byte{6, 6, 6, 6, 6, 6}, false, 0},
}

func TestRemovePadding(t *testing.T) {
        for i, test := range paddingTests {
                payload, good := removePadding(test.in)
                expectedGood := byte(255)
                if !test.good {
                        expectedGood = 0
                }
                if good != expectedGood {
                        t.Errorf("#%d: wrong validity, want:%d got:%d", i, expectedGood, good)
                }
                if good == 255 && len(payload) != test.expectedLen {
                        t.Errorf("#%d: got %d, want %d", i, len(payload), test.expectedLen)
                }
        }
}

var certExampleCom = `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`

var certWildcardExampleCom = `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`

var certFooExampleCom = `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`

var certDoubleWildcardExampleCom = `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`

func TestCertificateSelection(t *testing.T) {
        config := Config{
                Certificates: []Certificate{
                        {
                                Certificate: [][]byte{fromHex(certExampleCom)},
                        },
                        {
                                Certificate: [][]byte{fromHex(certWildcardExampleCom)},
                        },
                        {
                                Certificate: [][]byte{fromHex(certFooExampleCom)},
                        },
                        {
                                Certificate: [][]byte{fromHex(certDoubleWildcardExampleCom)},
                        },
                },
        }

        config.BuildNameToCertificate()

        pointerToIndex := func(c *Certificate) int {
                for i := range config.Certificates {
                        if c == &config.Certificates[i] {
                                return i
                        }
                }
                return -1
        }

        if n := pointerToIndex(config.getCertificateForName("example.com")); n != 0 {
                t.Errorf("example.com returned certificate %d, not 0", n)
        }
        if n := pointerToIndex(config.getCertificateForName("bar.example.com")); n != 1 {
                t.Errorf("bar.example.com returned certificate %d, not 1", n)
        }
        if n := pointerToIndex(config.getCertificateForName("foo.example.com")); n != 2 {
                t.Errorf("foo.example.com returned certificate %d, not 2", n)
        }
        if n := pointerToIndex(config.getCertificateForName("foo.bar.example.com")); n != 3 {
                t.Errorf("foo.bar.example.com returned certificate %d, not 3", n)
        }
        if n := pointerToIndex(config.getCertificateForName("foo.bar.baz.example.com")); n != 0 {
                t.Errorf("foo.bar.baz.example.com returned certificate %d, not 0", n)
        }
}