зеркало из https://github.com/microsoft/docker.git
454 строки
11 KiB
Go
454 строки
11 KiB
Go
package truncindex
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import (
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"math/rand"
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"testing"
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"time"
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"github.com/docker/docker/pkg/stringid"
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)
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// Test the behavior of TruncIndex, an index for querying IDs from a non-conflicting prefix.
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func TestTruncIndex(t *testing.T) {
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ids := []string{}
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index := NewTruncIndex(ids)
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// Get on an empty index
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if _, err := index.Get("foobar"); err == nil {
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t.Fatal("Get on an empty index should return an error")
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}
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// Spaces should be illegal in an id
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if err := index.Add("I have a space"); err == nil {
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t.Fatalf("Adding an id with ' ' should return an error")
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}
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id := "99b36c2c326ccc11e726eee6ee78a0baf166ef96"
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// Add an id
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if err := index.Add(id); err != nil {
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t.Fatal(err)
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}
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// Add an empty id (should fail)
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if err := index.Add(""); err == nil {
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t.Fatalf("Adding an empty id should return an error")
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}
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// Get a non-existing id
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assertIndexGet(t, index, "abracadabra", "", true)
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// Get an empty id
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assertIndexGet(t, index, "", "", true)
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// Get the exact id
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assertIndexGet(t, index, id, id, false)
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// The first letter should match
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assertIndexGet(t, index, id[:1], id, false)
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// The first half should match
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assertIndexGet(t, index, id[:len(id)/2], id, false)
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// The second half should NOT match
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assertIndexGet(t, index, id[len(id)/2:], "", true)
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id2 := id[:6] + "blabla"
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// Add an id
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if err := index.Add(id2); err != nil {
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t.Fatal(err)
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}
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// Both exact IDs should work
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assertIndexGet(t, index, id, id, false)
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assertIndexGet(t, index, id2, id2, false)
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// 6 characters or less should conflict
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assertIndexGet(t, index, id[:6], "", true)
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assertIndexGet(t, index, id[:4], "", true)
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assertIndexGet(t, index, id[:1], "", true)
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// An ambiguous id prefix should return an error
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if _, err := index.Get(id[:4]); err == nil {
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t.Fatal("An ambiguous id prefix should return an error")
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}
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// 7 characters should NOT conflict
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assertIndexGet(t, index, id[:7], id, false)
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assertIndexGet(t, index, id2[:7], id2, false)
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// Deleting a non-existing id should return an error
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if err := index.Delete("non-existing"); err == nil {
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t.Fatalf("Deleting a non-existing id should return an error")
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}
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// Deleting an empty id should return an error
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if err := index.Delete(""); err == nil {
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t.Fatal("Deleting an empty id should return an error")
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}
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// Deleting id2 should remove conflicts
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if err := index.Delete(id2); err != nil {
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t.Fatal(err)
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}
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// id2 should no longer work
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assertIndexGet(t, index, id2, "", true)
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assertIndexGet(t, index, id2[:7], "", true)
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assertIndexGet(t, index, id2[:11], "", true)
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// conflicts between id and id2 should be gone
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assertIndexGet(t, index, id[:6], id, false)
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assertIndexGet(t, index, id[:4], id, false)
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assertIndexGet(t, index, id[:1], id, false)
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// non-conflicting substrings should still not conflict
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assertIndexGet(t, index, id[:7], id, false)
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assertIndexGet(t, index, id[:15], id, false)
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assertIndexGet(t, index, id, id, false)
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assertIndexIterate(t)
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assertIndexIterateDoNotPanic(t)
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}
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func assertIndexIterate(t *testing.T) {
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ids := []string{
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"19b36c2c326ccc11e726eee6ee78a0baf166ef96",
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"28b36c2c326ccc11e726eee6ee78a0baf166ef96",
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"37b36c2c326ccc11e726eee6ee78a0baf166ef96",
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"46b36c2c326ccc11e726eee6ee78a0baf166ef96",
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}
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index := NewTruncIndex(ids)
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index.Iterate(func(targetId string) {
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for _, id := range ids {
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if targetId == id {
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return
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}
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}
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t.Fatalf("An unknown ID '%s'", targetId)
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})
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}
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func assertIndexIterateDoNotPanic(t *testing.T) {
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ids := []string{
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"19b36c2c326ccc11e726eee6ee78a0baf166ef96",
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"28b36c2c326ccc11e726eee6ee78a0baf166ef96",
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}
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index := NewTruncIndex(ids)
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iterationStarted := make(chan bool, 1)
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go func() {
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<-iterationStarted
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index.Delete("19b36c2c326ccc11e726eee6ee78a0baf166ef96")
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}()
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index.Iterate(func(targetId string) {
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if targetId == "19b36c2c326ccc11e726eee6ee78a0baf166ef96" {
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iterationStarted <- true
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time.Sleep(100 * time.Millisecond)
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}
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})
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}
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func assertIndexGet(t *testing.T, index *TruncIndex, input, expectedResult string, expectError bool) {
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if result, err := index.Get(input); err != nil && !expectError {
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t.Fatalf("Unexpected error getting '%s': %s", input, err)
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} else if err == nil && expectError {
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t.Fatalf("Getting '%s' should return an error, not '%s'", input, result)
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} else if result != expectedResult {
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t.Fatalf("Getting '%s' returned '%s' instead of '%s'", input, result, expectedResult)
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}
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}
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func BenchmarkTruncIndexAdd100(b *testing.B) {
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var testSet []string
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for i := 0; i < 100; i++ {
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testSet = append(testSet, stringid.GenerateNonCryptoID())
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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index := NewTruncIndex([]string{})
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for _, id := range testSet {
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if err := index.Add(id); err != nil {
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b.Fatal(err)
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}
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}
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}
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}
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func BenchmarkTruncIndexAdd250(b *testing.B) {
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var testSet []string
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for i := 0; i < 250; i++ {
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testSet = append(testSet, stringid.GenerateNonCryptoID())
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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index := NewTruncIndex([]string{})
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for _, id := range testSet {
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if err := index.Add(id); err != nil {
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b.Fatal(err)
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}
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}
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}
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}
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func BenchmarkTruncIndexAdd500(b *testing.B) {
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var testSet []string
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for i := 0; i < 500; i++ {
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testSet = append(testSet, stringid.GenerateNonCryptoID())
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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index := NewTruncIndex([]string{})
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for _, id := range testSet {
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if err := index.Add(id); err != nil {
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b.Fatal(err)
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}
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}
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}
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}
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func BenchmarkTruncIndexGet100(b *testing.B) {
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var testSet []string
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var testKeys []string
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for i := 0; i < 100; i++ {
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testSet = append(testSet, stringid.GenerateNonCryptoID())
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}
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index := NewTruncIndex([]string{})
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for _, id := range testSet {
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if err := index.Add(id); err != nil {
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b.Fatal(err)
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}
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l := rand.Intn(12) + 12
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testKeys = append(testKeys, id[:l])
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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for _, id := range testKeys {
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if res, err := index.Get(id); err != nil {
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b.Fatal(res, err)
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}
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}
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}
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}
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func BenchmarkTruncIndexGet250(b *testing.B) {
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var testSet []string
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var testKeys []string
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for i := 0; i < 250; i++ {
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testSet = append(testSet, stringid.GenerateNonCryptoID())
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}
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index := NewTruncIndex([]string{})
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for _, id := range testSet {
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if err := index.Add(id); err != nil {
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b.Fatal(err)
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}
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l := rand.Intn(12) + 12
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testKeys = append(testKeys, id[:l])
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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for _, id := range testKeys {
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if res, err := index.Get(id); err != nil {
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b.Fatal(res, err)
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}
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}
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}
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}
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func BenchmarkTruncIndexGet500(b *testing.B) {
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var testSet []string
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var testKeys []string
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for i := 0; i < 500; i++ {
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testSet = append(testSet, stringid.GenerateNonCryptoID())
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}
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index := NewTruncIndex([]string{})
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for _, id := range testSet {
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if err := index.Add(id); err != nil {
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b.Fatal(err)
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}
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l := rand.Intn(12) + 12
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testKeys = append(testKeys, id[:l])
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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for _, id := range testKeys {
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if res, err := index.Get(id); err != nil {
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b.Fatal(res, err)
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}
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}
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}
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}
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func BenchmarkTruncIndexDelete100(b *testing.B) {
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var testSet []string
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for i := 0; i < 100; i++ {
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testSet = append(testSet, stringid.GenerateNonCryptoID())
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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b.StopTimer()
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index := NewTruncIndex([]string{})
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for _, id := range testSet {
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if err := index.Add(id); err != nil {
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b.Fatal(err)
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}
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}
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b.StartTimer()
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for _, id := range testSet {
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if err := index.Delete(id); err != nil {
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b.Fatal(err)
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}
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}
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}
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}
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func BenchmarkTruncIndexDelete250(b *testing.B) {
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var testSet []string
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for i := 0; i < 250; i++ {
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testSet = append(testSet, stringid.GenerateNonCryptoID())
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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b.StopTimer()
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index := NewTruncIndex([]string{})
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for _, id := range testSet {
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if err := index.Add(id); err != nil {
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b.Fatal(err)
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}
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}
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b.StartTimer()
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for _, id := range testSet {
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if err := index.Delete(id); err != nil {
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b.Fatal(err)
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}
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}
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}
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}
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func BenchmarkTruncIndexDelete500(b *testing.B) {
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var testSet []string
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for i := 0; i < 500; i++ {
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testSet = append(testSet, stringid.GenerateNonCryptoID())
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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b.StopTimer()
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index := NewTruncIndex([]string{})
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for _, id := range testSet {
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if err := index.Add(id); err != nil {
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b.Fatal(err)
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}
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}
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b.StartTimer()
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for _, id := range testSet {
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if err := index.Delete(id); err != nil {
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b.Fatal(err)
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}
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}
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}
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}
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func BenchmarkTruncIndexNew100(b *testing.B) {
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var testSet []string
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for i := 0; i < 100; i++ {
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testSet = append(testSet, stringid.GenerateNonCryptoID())
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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NewTruncIndex(testSet)
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}
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}
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func BenchmarkTruncIndexNew250(b *testing.B) {
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var testSet []string
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for i := 0; i < 250; i++ {
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testSet = append(testSet, stringid.GenerateNonCryptoID())
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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NewTruncIndex(testSet)
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}
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}
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func BenchmarkTruncIndexNew500(b *testing.B) {
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var testSet []string
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for i := 0; i < 500; i++ {
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testSet = append(testSet, stringid.GenerateNonCryptoID())
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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NewTruncIndex(testSet)
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}
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}
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func BenchmarkTruncIndexAddGet100(b *testing.B) {
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var testSet []string
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var testKeys []string
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for i := 0; i < 500; i++ {
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id := stringid.GenerateNonCryptoID()
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testSet = append(testSet, id)
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l := rand.Intn(12) + 12
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testKeys = append(testKeys, id[:l])
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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index := NewTruncIndex([]string{})
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for _, id := range testSet {
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if err := index.Add(id); err != nil {
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b.Fatal(err)
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}
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}
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for _, id := range testKeys {
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if res, err := index.Get(id); err != nil {
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b.Fatal(res, err)
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}
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}
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}
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}
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func BenchmarkTruncIndexAddGet250(b *testing.B) {
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var testSet []string
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var testKeys []string
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for i := 0; i < 500; i++ {
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id := stringid.GenerateNonCryptoID()
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testSet = append(testSet, id)
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l := rand.Intn(12) + 12
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testKeys = append(testKeys, id[:l])
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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index := NewTruncIndex([]string{})
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for _, id := range testSet {
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if err := index.Add(id); err != nil {
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b.Fatal(err)
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}
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}
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for _, id := range testKeys {
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if res, err := index.Get(id); err != nil {
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b.Fatal(res, err)
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}
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}
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}
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}
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func BenchmarkTruncIndexAddGet500(b *testing.B) {
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var testSet []string
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var testKeys []string
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for i := 0; i < 500; i++ {
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id := stringid.GenerateNonCryptoID()
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testSet = append(testSet, id)
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l := rand.Intn(12) + 12
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testKeys = append(testKeys, id[:l])
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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index := NewTruncIndex([]string{})
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for _, id := range testSet {
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if err := index.Add(id); err != nil {
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b.Fatal(err)
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}
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}
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for _, id := range testKeys {
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if res, err := index.Get(id); err != nil {
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b.Fatal(res, err)
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}
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}
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}
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}
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