diff options
Diffstat (limited to 'pkg/tcpip/hash/jenkins/jenkins_test.go')
| -rw-r--r-- | pkg/tcpip/hash/jenkins/jenkins_test.go | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/pkg/tcpip/hash/jenkins/jenkins_test.go b/pkg/tcpip/hash/jenkins/jenkins_test.go deleted file mode 100644 index 4c78b5808..000000000 --- a/pkg/tcpip/hash/jenkins/jenkins_test.go +++ /dev/null @@ -1,176 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// 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 jenkins - -import ( - "bytes" - "encoding/binary" - "hash" - "hash/fnv" - "math" - "testing" -) - -func TestGolden32(t *testing.T) { - var golden32 = []struct { - out []byte - in string - }{ - {[]byte{0x00, 0x00, 0x00, 0x00}, ""}, - {[]byte{0xca, 0x2e, 0x94, 0x42}, "a"}, - {[]byte{0x45, 0xe6, 0x1e, 0x58}, "ab"}, - {[]byte{0xed, 0x13, 0x1f, 0x5b}, "abc"}, - } - - hash := New32() - - for _, g := range golden32 { - hash.Reset() - done, error := hash.Write([]byte(g.in)) - if error != nil { - t.Fatalf("write error: %s", error) - } - if done != len(g.in) { - t.Fatalf("wrote only %d out of %d bytes", done, len(g.in)) - } - if actual := hash.Sum(nil); !bytes.Equal(g.out, actual) { - t.Errorf("hash(%q) = 0x%x want 0x%x", g.in, actual, g.out) - } - } -} - -func TestIntegrity32(t *testing.T) { - data := []byte{'1', '2', 3, 4, 5} - - h := New32() - h.Write(data) - sum := h.Sum(nil) - - if size := h.Size(); size != len(sum) { - t.Fatalf("Size()=%d but len(Sum())=%d", size, len(sum)) - } - - if a := h.Sum(nil); !bytes.Equal(sum, a) { - t.Fatalf("first Sum()=0x%x, second Sum()=0x%x", sum, a) - } - - h.Reset() - h.Write(data) - if a := h.Sum(nil); !bytes.Equal(sum, a) { - t.Fatalf("Sum()=0x%x, but after Reset() Sum()=0x%x", sum, a) - } - - h.Reset() - h.Write(data[:2]) - h.Write(data[2:]) - if a := h.Sum(nil); !bytes.Equal(sum, a) { - t.Fatalf("Sum()=0x%x, but with partial writes, Sum()=0x%x", sum, a) - } - - sum32 := h.(hash.Hash32).Sum32() - if sum32 != binary.BigEndian.Uint32(sum) { - t.Fatalf("Sum()=0x%x, but Sum32()=0x%x", sum, sum32) - } -} - -func BenchmarkJenkins32KB(b *testing.B) { - h := New32() - - b.SetBytes(1024) - data := make([]byte, 1024) - for i := range data { - data[i] = byte(i) - } - in := make([]byte, 0, h.Size()) - - b.ResetTimer() - for i := 0; i < b.N; i++ { - h.Reset() - h.Write(data) - h.Sum(in) - } -} - -func BenchmarkFnv32(b *testing.B) { - arr := make([]int64, 1000) - for i := 0; i < b.N; i++ { - var payload [8]byte - binary.BigEndian.PutUint32(payload[:4], uint32(i)) - binary.BigEndian.PutUint32(payload[4:], uint32(i)) - - h := fnv.New32() - h.Write(payload[:]) - idx := int(h.Sum32()) % len(arr) - arr[idx]++ - } - b.StopTimer() - c := 0 - if b.N > 1000000 { - for i := 0; i < len(arr)-1; i++ { - if math.Abs(float64(arr[i]-arr[i+1]))/float64(arr[i]) > float64(0.1) { - if c == 0 { - b.Logf("i %d val[i] %d val[i+1] %d b.N %b\n", i, arr[i], arr[i+1], b.N) - } - c++ - } - } - if c > 0 { - b.Logf("Unbalanced buckets: %d", c) - } - } -} - -func BenchmarkSum32(b *testing.B) { - arr := make([]int64, 1000) - for i := 0; i < b.N; i++ { - var payload [8]byte - binary.BigEndian.PutUint32(payload[:4], uint32(i)) - binary.BigEndian.PutUint32(payload[4:], uint32(i)) - h := Sum32(0) - h.Write(payload[:]) - idx := int(h.Sum32()) % len(arr) - arr[idx]++ - } - b.StopTimer() - if b.N > 1000000 { - for i := 0; i < len(arr)-1; i++ { - if math.Abs(float64(arr[i]-arr[i+1]))/float64(arr[i]) > float64(0.1) { - b.Logf("val[%3d]=%8d\tval[%3d]=%8d\tb.N=%b\n", i, arr[i], i+1, arr[i+1], b.N) - break - } - } - } -} - -func BenchmarkNew32(b *testing.B) { - arr := make([]int64, 1000) - for i := 0; i < b.N; i++ { - var payload [8]byte - binary.BigEndian.PutUint32(payload[:4], uint32(i)) - binary.BigEndian.PutUint32(payload[4:], uint32(i)) - h := New32() - h.Write(payload[:]) - idx := int(h.Sum32()) % len(arr) - arr[idx]++ - } - b.StopTimer() - if b.N > 1000000 { - for i := 0; i < len(arr)-1; i++ { - if math.Abs(float64(arr[i]-arr[i+1]))/float64(arr[i]) > float64(0.1) { - b.Logf("val[%3d]=%8d\tval[%3d]=%8d\tb.N=%b\n", i, arr[i], i+1, arr[i+1], b.N) - break - } - } - } -} |