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merge_test.go
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// go test -v -run="TestMergeCIDRs"
package cidrman
import (
"reflect"
"testing"
)
func TestMergeCIDRs(t *testing.T) {
type TestCase struct {
Input []string
Output []string
Error bool
}
testCases := []TestCase{
{
Input: nil,
Output: nil,
Error: false,
},
{
Input: []string{},
Output: []string{},
Error: false,
},
{
Input: []string{
"10.0.0.0/8",
},
Output: []string{
"10.0.0.0/8",
},
Error: false,
},
{
Input: []string{
"10.0.0.0/8",
"0.0.0.0/0",
},
Output: []string{
"0.0.0.0/0",
},
Error: false,
},
{
Input: []string{
"10.0.0.0/8",
"10.0.0.0/8",
},
Output: []string{
"10.0.0.0/8",
},
Error: false,
},
{
Input: []string{
"192.0.128.0/24",
"192.0.129.0/24",
},
Output: []string{
"192.0.128.0/23",
},
Error: false,
},
{
Input: []string{
"192.0.129.0/24",
"192.0.130.0/24",
},
Output: []string{
"192.0.129.0/24",
"192.0.130.0/24",
},
Error: false,
},
{
Input: []string{
"192.0.2.112/30",
"192.0.2.116/31",
"192.0.2.118/31",
},
Output: []string{
"192.0.2.112/29",
},
Error: false,
},
// The same as above out of order.
{
Input: []string{
"192.0.2.116/31",
"192.0.2.118/31",
"192.0.2.112/30",
},
Output: []string{
"192.0.2.112/29",
},
Error: false,
},
{
Input: []string{
"192.0.2.112/30",
"192.0.2.116/32",
"192.0.2.118/31",
},
Output: []string{
"192.0.2.112/30",
"192.0.2.116/32",
"192.0.2.118/31",
},
Error: false,
},
{
Input: []string{
"192.0.2.112/31",
"192.0.2.116/31",
"192.0.2.118/31",
},
Output: []string{
"192.0.2.112/31",
"192.0.2.116/30",
},
Error: false,
},
{
Input: []string{
"192.0.1.254/31",
"192.0.2.0/28",
"192.0.2.16/28",
"192.0.2.32/28",
"192.0.2.48/28",
"192.0.2.64/28",
"192.0.2.80/28",
"192.0.2.96/28",
"192.0.2.112/28",
"192.0.2.128/28",
"192.0.2.144/28",
"192.0.2.160/28",
"192.0.2.176/28",
"192.0.2.192/28",
"192.0.2.208/28",
"192.0.2.224/28",
"192.0.2.240/28",
"192.0.3.0/28",
},
Output: []string{
"192.0.1.254/31",
"192.0.2.0/24",
"192.0.3.0/28",
},
Error: false,
},
{
Input: []string{
"1.2.3.4/16",
"1.2.3.5/16",
},
Output: []string{
"1.2.0.0/16",
},
Error: false,
},
{
Input: []string{
"1.2.3.4/32",
"1.2.3.4/32",
},
Output: []string{
"1.2.3.4/32",
},
Error: false,
},
{
Input: []string{
"1.2.3.4/32",
"1.2.3.4/24",
},
Output: []string{
"1.2.3.0/24",
},
Error: false,
},
}
for _, testCase := range testCases {
output, err := MergeCIDRs(testCase.Input)
if err != nil {
if !testCase.Error {
t.Errorf("MergeCIDRS(%#v) failed: %s", testCase.Input, err.Error())
}
}
if !reflect.DeepEqual(testCase.Output, output) {
t.Errorf("MergeCIDRS(%#v) expected: %#v, got: %#v", testCase.Input, testCase.Output, output)
}
}
}