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authorobscuren <geffobscura@gmail.com>2015-06-19 23:02:09 +0800
committerJeffrey Wilcke <geffobscura@gmail.com>2015-06-30 00:51:49 +0800
commit4d117478368d6badf8d0e527f5bfd5bb6386deaa (patch)
treea8c41ea7ce7e56fcc4ea1dda0d15fc07dc583c3f
parent6ca3a446383bafc9510b36c88629ca7d876fb258 (diff)
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deps: Added golang-lru
-rw-r--r--Godeps/Godeps.json7
-rw-r--r--Godeps/_workspace/src/github.com/hashicorp/golang-lru/.gitignore23
-rw-r--r--Godeps/_workspace/src/github.com/hashicorp/golang-lru/LICENSE362
-rw-r--r--Godeps/_workspace/src/github.com/hashicorp/golang-lru/README.md25
-rw-r--r--Godeps/_workspace/src/github.com/hashicorp/golang-lru/lru.go175
-rw-r--r--Godeps/_workspace/src/github.com/hashicorp/golang-lru/lru_test.go127
6 files changed, 718 insertions, 1 deletions
diff --git a/Godeps/Godeps.json b/Godeps/Godeps.json
index ce4e8753a..c01655894 100644
--- a/Godeps/Godeps.json
+++ b/Godeps/Godeps.json
@@ -1,6 +1,6 @@
{
"ImportPath": "github.com/ethereum/go-ethereum",
- "GoVersion": "go1.4.2",
+ "GoVersion": "go1.4",
"Packages": [
"./..."
],
@@ -29,6 +29,11 @@
"Rev": "bab8dce01c193d82bc04888a0a9a7814d505f532"
},
{
+ "ImportPath": "github.com/howeyc/fsnotify",
+ "Comment": "v0.9.0-11-g6b1ef89",
+ "Rev": "6b1ef893dc11e0447abda6da20a5203481878dda"
+ },
+ {
"ImportPath": "github.com/huin/goupnp",
"Rev": "5cff77a69fb22f5f1774c4451ea2aab63d4d2f20"
},
diff --git a/Godeps/_workspace/src/github.com/hashicorp/golang-lru/.gitignore b/Godeps/_workspace/src/github.com/hashicorp/golang-lru/.gitignore
new file mode 100644
index 000000000..836562412
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/hashicorp/golang-lru/.gitignore
@@ -0,0 +1,23 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+*.test
diff --git a/Godeps/_workspace/src/github.com/hashicorp/golang-lru/LICENSE b/Godeps/_workspace/src/github.com/hashicorp/golang-lru/LICENSE
new file mode 100644
index 000000000..be2cc4dfb
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/hashicorp/golang-lru/LICENSE
@@ -0,0 +1,362 @@
+Mozilla Public License, version 2.0
+
+1. Definitions
+
+1.1. "Contributor"
+
+ means each individual or legal entity that creates, contributes to the
+ creation of, or owns Covered Software.
+
+1.2. "Contributor Version"
+
+ means the combination of the Contributions of others (if any) used by a
+ Contributor and that particular Contributor's Contribution.
+
+1.3. "Contribution"
+
+ means Covered Software of a particular Contributor.
+
+1.4. "Covered Software"
+
+ means Source Code Form to which the initial Contributor has attached the
+ notice in Exhibit A, the Executable Form of such Source Code Form, and
+ Modifications of such Source Code Form, in each case including portions
+ thereof.
+
+1.5. "Incompatible With Secondary Licenses"
+ means
+
+ a. that the initial Contributor has attached the notice described in
+ Exhibit B to the Covered Software; or
+
+ b. that the Covered Software was made available under the terms of
+ version 1.1 or earlier of the License, but not also under the terms of
+ a Secondary License.
+
+1.6. "Executable Form"
+
+ means any form of the work other than Source Code Form.
+
+1.7. "Larger Work"
+
+ means a work that combines Covered Software with other material, in a
+ separate file or files, that is not Covered Software.
+
+1.8. "License"
+
+ means this document.
+
+1.9. "Licensable"
+
+ means having the right to grant, to the maximum extent possible, whether
+ at the time of the initial grant or subsequently, any and all of the
+ rights conveyed by this License.
+
+1.10. "Modifications"
+
+ means any of the following:
+
+ a. any file in Source Code Form that results from an addition to,
+ deletion from, or modification of the contents of Covered Software; or
+
+ b. any new file in Source Code Form that contains any Covered Software.
+
+1.11. "Patent Claims" of a Contributor
+
+ means any patent claim(s), including without limitation, method,
+ process, and apparatus claims, in any patent Licensable by such
+ Contributor that would be infringed, but for the grant of the License,
+ by the making, using, selling, offering for sale, having made, import,
+ or transfer of either its Contributions or its Contributor Version.
+
+1.12. "Secondary License"
+
+ means either the GNU General Public License, Version 2.0, the GNU Lesser
+ General Public License, Version 2.1, the GNU Affero General Public
+ License, Version 3.0, or any later versions of those licenses.
+
+1.13. "Source Code Form"
+
+ means the form of the work preferred for making modifications.
+
+1.14. "You" (or "Your")
+
+ means an individual or a legal entity exercising rights under this
+ License. For legal entities, "You" includes any entity that controls, is
+ controlled by, or is under common control with You. For purposes of this
+ definition, "control" means (a) the power, direct or indirect, to cause
+ the direction or management of such entity, whether by contract or
+ otherwise, or (b) ownership of more than fifty percent (50%) of the
+ outstanding shares or beneficial ownership of such entity.
+
+
+2. License Grants and Conditions
+
+2.1. Grants
+
+ Each Contributor hereby grants You a world-wide, royalty-free,
+ non-exclusive license:
+
+ a. under intellectual property rights (other than patent or trademark)
+ Licensable by such Contributor to use, reproduce, make available,
+ modify, display, perform, distribute, and otherwise exploit its
+ Contributions, either on an unmodified basis, with Modifications, or
+ as part of a Larger Work; and
+
+ b. under Patent Claims of such Contributor to make, use, sell, offer for
+ sale, have made, import, and otherwise transfer either its
+ Contributions or its Contributor Version.
+
+2.2. Effective Date
+
+ The licenses granted in Section 2.1 with respect to any Contribution
+ become effective for each Contribution on the date the Contributor first
+ distributes such Contribution.
+
+2.3. Limitations on Grant Scope
+
+ The licenses granted in this Section 2 are the only rights granted under
+ this License. No additional rights or licenses will be implied from the
+ distribution or licensing of Covered Software under this License.
+ Notwithstanding Section 2.1(b) above, no patent license is granted by a
+ Contributor:
+
+ a. for any code that a Contributor has removed from Covered Software; or
+
+ b. for infringements caused by: (i) Your and any other third party's
+ modifications of Covered Software, or (ii) the combination of its
+ Contributions with other software (except as part of its Contributor
+ Version); or
+
+ c. under Patent Claims infringed by Covered Software in the absence of
+ its Contributions.
+
+ This License does not grant any rights in the trademarks, service marks,
+ or logos of any Contributor (except as may be necessary to comply with
+ the notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+ No Contributor makes additional grants as a result of Your choice to
+ distribute the Covered Software under a subsequent version of this
+ License (see Section 10.2) or under the terms of a Secondary License (if
+ permitted under the terms of Section 3.3).
+
+2.5. Representation
+
+ Each Contributor represents that the Contributor believes its
+ Contributions are its original creation(s) or it has sufficient rights to
+ grant the rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+ This License is not intended to limit any rights You have under
+ applicable copyright doctrines of fair use, fair dealing, or other
+ equivalents.
+
+2.7. Conditions
+
+ Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
+ Section 2.1.
+
+
+3. Responsibilities
+
+3.1. Distribution of Source Form
+
+ All distribution of Covered Software in Source Code Form, including any
+ Modifications that You create or to which You contribute, must be under
+ the terms of this License. You must inform recipients that the Source
+ Code Form of the Covered Software is governed by the terms of this
+ License, and how they can obtain a copy of this License. You may not
+ attempt to alter or restrict the recipients' rights in the Source Code
+ Form.
+
+3.2. Distribution of Executable Form
+
+ If You distribute Covered Software in Executable Form then:
+
+ a. such Covered Software must also be made available in Source Code Form,
+ as described in Section 3.1, and You must inform recipients of the
+ Executable Form how they can obtain a copy of such Source Code Form by
+ reasonable means in a timely manner, at a charge no more than the cost
+ of distribution to the recipient; and
+
+ b. You may distribute such Executable Form under the terms of this
+ License, or sublicense it under different terms, provided that the
+ license for the Executable Form does not attempt to limit or alter the
+ recipients' rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+ You may create and distribute a Larger Work under terms of Your choice,
+ provided that You also comply with the requirements of this License for
+ the Covered Software. If the Larger Work is a combination of Covered
+ Software with a work governed by one or more Secondary Licenses, and the
+ Covered Software is not Incompatible With Secondary Licenses, this
+ License permits You to additionally distribute such Covered Software
+ under the terms of such Secondary License(s), so that the recipient of
+ the Larger Work may, at their option, further distribute the Covered
+ Software under the terms of either this License or such Secondary
+ License(s).
+
+3.4. Notices
+
+ You may not remove or alter the substance of any license notices
+ (including copyright notices, patent notices, disclaimers of warranty, or
+ limitations of liability) contained within the Source Code Form of the
+ Covered Software, except that You may alter any license notices to the
+ extent required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+ You may choose to offer, and to charge a fee for, warranty, support,
+ indemnity or liability obligations to one or more recipients of Covered
+ Software. However, You may do so only on Your own behalf, and not on
+ behalf of any Contributor. You must make it absolutely clear that any
+ such warranty, support, indemnity, or liability obligation is offered by
+ You alone, and You hereby agree to indemnify every Contributor for any
+ liability incurred by such Contributor as a result of warranty, support,
+ indemnity or liability terms You offer. You may include additional
+ disclaimers of warranty and limitations of liability specific to any
+ jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+
+ If it is impossible for You to comply with any of the terms of this License
+ with respect to some or all of the Covered Software due to statute,
+ judicial order, or regulation then You must: (a) comply with the terms of
+ this License to the maximum extent possible; and (b) describe the
+ limitations and the code they affect. Such description must be placed in a
+ text file included with all distributions of the Covered Software under
+ this License. Except to the extent prohibited by statute or regulation,
+ such description must be sufficiently detailed for a recipient of ordinary
+ skill to be able to understand it.
+
+5. Termination
+
+5.1. The rights granted under this License will terminate automatically if You
+ fail to comply with any of its terms. However, if You become compliant,
+ then the rights granted under this License from a particular Contributor
+ are reinstated (a) provisionally, unless and until such Contributor
+ explicitly and finally terminates Your grants, and (b) on an ongoing
+ basis, if such Contributor fails to notify You of the non-compliance by
+ some reasonable means prior to 60 days after You have come back into
+ compliance. Moreover, Your grants from a particular Contributor are
+ reinstated on an ongoing basis if such Contributor notifies You of the
+ non-compliance by some reasonable means, this is the first time You have
+ received notice of non-compliance with this License from such
+ Contributor, and You become compliant prior to 30 days after Your receipt
+ of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+ infringement claim (excluding declaratory judgment actions,
+ counter-claims, and cross-claims) alleging that a Contributor Version
+ directly or indirectly infringes any patent, then the rights granted to
+ You by any and all Contributors for the Covered Software under Section
+ 2.1 of this License shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
+ license agreements (excluding distributors and resellers) which have been
+ validly granted by You or Your distributors under this License prior to
+ termination shall survive termination.
+
+6. Disclaimer of Warranty
+
+ Covered Software is provided under this License on an "as is" basis,
+ without warranty of any kind, either expressed, implied, or statutory,
+ including, without limitation, warranties that the Covered Software is free
+ of defects, merchantable, fit for a particular purpose or non-infringing.
+ The entire risk as to the quality and performance of the Covered Software
+ is with You. Should any Covered Software prove defective in any respect,
+ You (not any Contributor) assume the cost of any necessary servicing,
+ repair, or correction. This disclaimer of warranty constitutes an essential
+ part of this License. No use of any Covered Software is authorized under
+ this License except under this disclaimer.
+
+7. Limitation of Liability
+
+ Under no circumstances and under no legal theory, whether tort (including
+ negligence), contract, or otherwise, shall any Contributor, or anyone who
+ distributes Covered Software as permitted above, be liable to You for any
+ direct, indirect, special, incidental, or consequential damages of any
+ character including, without limitation, damages for lost profits, loss of
+ goodwill, work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses, even if such party shall have been
+ informed of the possibility of such damages. This limitation of liability
+ shall not apply to liability for death or personal injury resulting from
+ such party's negligence to the extent applicable law prohibits such
+ limitation. Some jurisdictions do not allow the exclusion or limitation of
+ incidental or consequential damages, so this exclusion and limitation may
+ not apply to You.
+
+8. Litigation
+
+ Any litigation relating to this License may be brought only in the courts
+ of a jurisdiction where the defendant maintains its principal place of
+ business and such litigation shall be governed by laws of that
+ jurisdiction, without reference to its conflict-of-law provisions. Nothing
+ in this Section shall prevent a party's ability to bring cross-claims or
+ counter-claims.
+
+9. Miscellaneous
+
+ This License represents the complete agreement concerning the subject
+ matter hereof. If any provision of this License is held to be
+ unenforceable, such provision shall be reformed only to the extent
+ necessary to make it enforceable. Any law or regulation which provides that
+ the language of a contract shall be construed against the drafter shall not
+ be used to construe this License against a Contributor.
+
+
+10. Versions of the License
+
+10.1. New Versions
+
+ Mozilla Foundation is the license steward. Except as provided in Section
+ 10.3, no one other than the license steward has the right to modify or
+ publish new versions of this License. Each version will be given a
+ distinguishing version number.
+
+10.2. Effect of New Versions
+
+ You may distribute the Covered Software under the terms of the version
+ of the License under which You originally received the Covered Software,
+ or under the terms of any subsequent version published by the license
+ steward.
+
+10.3. Modified Versions
+
+ If you create software not governed by this License, and you want to
+ create a new license for such software, you may create and use a
+ modified version of this License if you rename the license and remove
+ any references to the name of the license steward (except to note that
+ such modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+ Licenses If You choose to distribute Source Code Form that is
+ Incompatible With Secondary Licenses under the terms of this version of
+ the License, the notice described in Exhibit B of this License must be
+ attached.
+
+Exhibit A - Source Code Form License Notice
+
+ This Source Code Form is subject to the
+ terms of the Mozilla Public License, v.
+ 2.0. If a copy of the MPL was not
+ distributed with this file, You can
+ obtain one at
+ http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular file,
+then You may include the notice in a location (such as a LICENSE file in a
+relevant directory) where a recipient would be likely to look for such a
+notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+
+ This Source Code Form is "Incompatible
+ With Secondary Licenses", as defined by
+ the Mozilla Public License, v. 2.0.
diff --git a/Godeps/_workspace/src/github.com/hashicorp/golang-lru/README.md b/Godeps/_workspace/src/github.com/hashicorp/golang-lru/README.md
new file mode 100644
index 000000000..33e58cfaf
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/hashicorp/golang-lru/README.md
@@ -0,0 +1,25 @@
+golang-lru
+==========
+
+This provides the `lru` package which implements a fixed-size
+thread safe LRU cache. It is based on the cache in Groupcache.
+
+Documentation
+=============
+
+Full docs are available on [Godoc](http://godoc.org/github.com/hashicorp/golang-lru)
+
+Example
+=======
+
+Using the LRU is very simple:
+
+```go
+l, _ := New(128)
+for i := 0; i < 256; i++ {
+ l.Add(i, nil)
+}
+if l.Len() != 128 {
+ panic(fmt.Sprintf("bad len: %v", l.Len()))
+}
+```
diff --git a/Godeps/_workspace/src/github.com/hashicorp/golang-lru/lru.go b/Godeps/_workspace/src/github.com/hashicorp/golang-lru/lru.go
new file mode 100644
index 000000000..5f1e8a1af
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/hashicorp/golang-lru/lru.go
@@ -0,0 +1,175 @@
+// This package provides a simple LRU cache. It is based on the
+// LRU implementation in groupcache:
+// https://github.com/golang/groupcache/tree/master/lru
+package lru
+
+import (
+ "container/list"
+ "errors"
+ "sync"
+)
+
+// Cache is a thread-safe fixed size LRU cache.
+type Cache struct {
+ size int
+ evictList *list.List
+ items map[interface{}]*list.Element
+ lock sync.RWMutex
+ onEvicted func(key interface{}, value interface{})
+}
+
+// entry is used to hold a value in the evictList
+type entry struct {
+ key interface{}
+ value interface{}
+}
+
+// New creates an LRU of the given size
+func New(size int) (*Cache, error) {
+ return NewWithEvict(size, nil)
+}
+
+func NewWithEvict(size int, onEvicted func(key interface{}, value interface{})) (*Cache, error) {
+ if size <= 0 {
+ return nil, errors.New("Must provide a positive size")
+ }
+ c := &Cache{
+ size: size,
+ evictList: list.New(),
+ items: make(map[interface{}]*list.Element, size),
+ onEvicted: onEvicted,
+ }
+ return c, nil
+}
+
+// Purge is used to completely clear the cache
+func (c *Cache) Purge() {
+ c.lock.Lock()
+ defer c.lock.Unlock()
+
+ if c.onEvicted != nil {
+ for k, v := range c.items {
+ c.onEvicted(k, v.Value.(*entry).value)
+ }
+ }
+
+ c.evictList = list.New()
+ c.items = make(map[interface{}]*list.Element, c.size)
+}
+
+// Add adds a value to the cache. Returns true if an eviction occured.
+func (c *Cache) Add(key, value interface{}) bool {
+ c.lock.Lock()
+ defer c.lock.Unlock()
+
+ // Check for existing item
+ if ent, ok := c.items[key]; ok {
+ c.evictList.MoveToFront(ent)
+ ent.Value.(*entry).value = value
+ return false
+ }
+
+ // Add new item
+ ent := &entry{key, value}
+ entry := c.evictList.PushFront(ent)
+ c.items[key] = entry
+
+ evict := c.evictList.Len() > c.size
+ // Verify size not exceeded
+ if evict {
+ c.removeOldest()
+ }
+ return evict
+}
+
+// Get looks up a key's value from the cache.
+func (c *Cache) Get(key interface{}) (value interface{}, ok bool) {
+ c.lock.Lock()
+ defer c.lock.Unlock()
+
+ if ent, ok := c.items[key]; ok {
+ c.evictList.MoveToFront(ent)
+ return ent.Value.(*entry).value, true
+ }
+ return
+}
+
+// Check if a key is in the cache, without updating the recent-ness or deleting it for being stale.
+func (c *Cache) Contains(key interface{}) (ok bool) {
+ c.lock.RLock()
+ defer c.lock.RUnlock()
+
+ _, ok = c.items[key]
+ return ok
+}
+
+// Returns the key value (or undefined if not found) without updating the "recently used"-ness of the key.
+// (If you find yourself using this a lot, you might be using the wrong sort of data structure, but there are some use cases where it's handy.)
+func (c *Cache) Peek(key interface{}) (value interface{}, ok bool) {
+ c.lock.RLock()
+ defer c.lock.RUnlock()
+
+ if ent, ok := c.items[key]; ok {
+ return ent.Value.(*entry).value, true
+ }
+ return nil, ok
+}
+
+// Remove removes the provided key from the cache.
+func (c *Cache) Remove(key interface{}) {
+ c.lock.Lock()
+ defer c.lock.Unlock()
+
+ if ent, ok := c.items[key]; ok {
+ c.removeElement(ent)
+ }
+}
+
+// RemoveOldest removes the oldest item from the cache.
+func (c *Cache) RemoveOldest() {
+ c.lock.Lock()
+ defer c.lock.Unlock()
+ c.removeOldest()
+}
+
+// Keys returns a slice of the keys in the cache, from oldest to newest.
+func (c *Cache) Keys() []interface{} {
+ c.lock.RLock()
+ defer c.lock.RUnlock()
+
+ keys := make([]interface{}, len(c.items))
+ ent := c.evictList.Back()
+ i := 0
+ for ent != nil {
+ keys[i] = ent.Value.(*entry).key
+ ent = ent.Prev()
+ i++
+ }
+
+ return keys
+}
+
+// Len returns the number of items in the cache.
+func (c *Cache) Len() int {
+ c.lock.RLock()
+ defer c.lock.RUnlock()
+ return c.evictList.Len()
+}
+
+// removeOldest removes the oldest item from the cache.
+func (c *Cache) removeOldest() {
+ ent := c.evictList.Back()
+ if ent != nil {
+ c.removeElement(ent)
+ }
+}
+
+// removeElement is used to remove a given list element from the cache
+func (c *Cache) removeElement(e *list.Element) {
+ c.evictList.Remove(e)
+ kv := e.Value.(*entry)
+ delete(c.items, kv.key)
+ if c.onEvicted != nil {
+ c.onEvicted(kv.key, kv.value)
+ }
+}
diff --git a/Godeps/_workspace/src/github.com/hashicorp/golang-lru/lru_test.go b/Godeps/_workspace/src/github.com/hashicorp/golang-lru/lru_test.go
new file mode 100644
index 000000000..b676cfd9d
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/hashicorp/golang-lru/lru_test.go
@@ -0,0 +1,127 @@
+package lru
+
+import "testing"
+
+func TestLRU(t *testing.T) {
+ evictCounter := 0
+ onEvicted := func(k interface{}, v interface{}) {
+ if k != v {
+ t.Fatalf("Evict values not equal (%v!=%v)", k, v)
+ }
+ evictCounter += 1
+ }
+ l, err := NewWithEvict(128, onEvicted)
+ if err != nil {
+ t.Fatalf("err: %v", err)
+ }
+
+ for i := 0; i < 256; i++ {
+ l.Add(i, i)
+ }
+ if l.Len() != 128 {
+ t.Fatalf("bad len: %v", l.Len())
+ }
+
+ if evictCounter != 128 {
+ t.Fatalf("bad evict count: %v", evictCounter)
+ }
+
+ for i, k := range l.Keys() {
+ if v, ok := l.Get(k); !ok || v != k || v != i+128 {
+ t.Fatalf("bad key: %v", k)
+ }
+ }
+ for i := 0; i < 128; i++ {
+ _, ok := l.Get(i)
+ if ok {
+ t.Fatalf("should be evicted")
+ }
+ }
+ for i := 128; i < 256; i++ {
+ _, ok := l.Get(i)
+ if !ok {
+ t.Fatalf("should not be evicted")
+ }
+ }
+ for i := 128; i < 192; i++ {
+ l.Remove(i)
+ _, ok := l.Get(i)
+ if ok {
+ t.Fatalf("should be deleted")
+ }
+ }
+
+ l.Get(192) // expect 192 to be last key in l.Keys()
+
+ for i, k := range l.Keys() {
+ if (i < 63 && k != i+193) || (i == 63 && k != 192) {
+ t.Fatalf("out of order key: %v", k)
+ }
+ }
+
+ l.Purge()
+ if l.Len() != 0 {
+ t.Fatalf("bad len: %v", l.Len())
+ }
+ if _, ok := l.Get(200); ok {
+ t.Fatalf("should contain nothing")
+ }
+}
+
+// test that Add returns true/false if an eviction occured
+func TestLRUAdd(t *testing.T) {
+ evictCounter := 0
+ onEvicted := func(k interface{}, v interface{}) {
+ evictCounter += 1
+ }
+
+ l, err := NewWithEvict(1, onEvicted)
+ if err != nil {
+ t.Fatalf("err: %v", err)
+ }
+
+ if l.Add(1, 1) == true || evictCounter != 0 {
+ t.Errorf("should not have an eviction")
+ }
+ if l.Add(2, 2) == false || evictCounter != 1 {
+ t.Errorf("should have an eviction")
+ }
+}
+
+// test that Contains doesn't update recent-ness
+func TestLRUContains(t *testing.T) {
+ l, err := New(2)
+ if err != nil {
+ t.Fatalf("err: %v", err)
+ }
+
+ l.Add(1, 1)
+ l.Add(2, 2)
+ if !l.Contains(1) {
+ t.Errorf("1 should be contained")
+ }
+
+ l.Add(3, 3)
+ if l.Contains(1) {
+ t.Errorf("Contains should not have updated recent-ness of 1")
+ }
+}
+
+// test that Peek doesn't update recent-ness
+func TestLRUPeek(t *testing.T) {
+ l, err := New(2)
+ if err != nil {
+ t.Fatalf("err: %v", err)
+ }
+
+ l.Add(1, 1)
+ l.Add(2, 2)
+ if v, ok := l.Peek(1); !ok || v != 1 {
+ t.Errorf("1 should be set to 1: %v, %v", v, ok)
+ }
+
+ l.Add(3, 3)
+ if l.Contains(1) {
+ t.Errorf("should not have updated recent-ness of 1")
+ }
+}