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cmux/patricia_test.go
Soheil Hassas Yeganeh eddb3b1467 Fix index out of range in patricia tree
Bug  reported that there is an index out of range error. This
issue was introduced in 703b087.

Fix  and add a test to detect this issue
2016-07-15 10:01:37 -07:00

57 lines
1.6 KiB
Go

// Copyright 2016 The CMux Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.
package cmux
import (
"strings"
"testing"
)
func testPTree(t *testing.T, strs ...string) {
pt := newPatriciaTreeString(strs...)
for _, s := range strs {
if !pt.match(strings.NewReader(s)) {
t.Errorf("%s is not matched by %s", s, s)
}
if !pt.matchPrefix(strings.NewReader(s + s)) {
t.Errorf("%s is not matched as a prefix by %s", s+s, s)
}
if pt.match(strings.NewReader(s + s)) {
t.Errorf("%s matches %s", s+s, s)
}
// The following tests are just to catch index out of
// range and off-by-one errors and not the functionality.
pt.matchPrefix(strings.NewReader(s[:len(s)-1]))
pt.match(strings.NewReader(s[:len(s)-1]))
pt.matchPrefix(strings.NewReader(s + "$"))
pt.match(strings.NewReader(s + "$"))
}
}
func TestPatriciaOnePrefix(t *testing.T) {
testPTree(t, "prefix")
}
func TestPatriciaNonOverlapping(t *testing.T) {
testPTree(t, "foo", "bar", "dummy")
}
func TestPatriciaOverlapping(t *testing.T) {
testPTree(t, "foo", "far", "farther", "boo", "ba", "bar")
}