package bitseq import ( "fmt" "io/ioutil" "math/rand" "testing" "time" "github.com/docker/libkv/store" "github.com/docker/libnetwork/datastore" _ "github.com/docker/libnetwork/testutils" ) const ( defaultPrefix = "/tmp/libnetwork/test/bitseq" ) func randomLocalStore() (datastore.DataStore, error) { tmp, err := ioutil.TempFile("", "libnetwork-") if err != nil { return nil, fmt.Errorf("Error creating temp file: %v", err) } if err := tmp.Close(); err != nil { return nil, fmt.Errorf("Error closing temp file: %v", err) } return datastore.NewDataStore(datastore.LocalScope, &datastore.ScopeCfg{ Client: datastore.ScopeClientCfg{ Provider: "boltdb", Address: defaultPrefix + tmp.Name(), Config: &store.Config{ Bucket: "libnetwork", ConnectionTimeout: 3 * time.Second, }, }, }) } func TestSequenceGetAvailableBit(t *testing.T) { input := []struct { head *sequence from uint64 bytePos uint64 bitPos uint64 }{ {&sequence{block: 0x0, count: 0}, 0, invalidPos, invalidPos}, {&sequence{block: 0x0, count: 1}, 0, 0, 0}, {&sequence{block: 0x0, count: 100}, 0, 0, 0}, {&sequence{block: 0x80000000, count: 0}, 0, invalidPos, invalidPos}, {&sequence{block: 0x80000000, count: 1}, 0, 0, 1}, {&sequence{block: 0x80000000, count: 100}, 0, 0, 1}, {&sequence{block: 0xFF000000, count: 0}, 0, invalidPos, invalidPos}, {&sequence{block: 0xFF000000, count: 1}, 0, 1, 0}, {&sequence{block: 0xFF000000, count: 100}, 0, 1, 0}, {&sequence{block: 0xFF800000, count: 0}, 0, invalidPos, invalidPos}, {&sequence{block: 0xFF800000, count: 1}, 0, 1, 1}, {&sequence{block: 0xFF800000, count: 100}, 0, 1, 1}, {&sequence{block: 0xFFC0FF00, count: 0}, 0, invalidPos, invalidPos}, {&sequence{block: 0xFFC0FF00, count: 1}, 0, 1, 2}, {&sequence{block: 0xFFC0FF00, count: 100}, 0, 1, 2}, {&sequence{block: 0xFFE0FF00, count: 0}, 0, invalidPos, invalidPos}, {&sequence{block: 0xFFE0FF00, count: 1}, 0, 1, 3}, {&sequence{block: 0xFFE0FF00, count: 100}, 0, 1, 3}, {&sequence{block: 0xFFFEFF00, count: 0}, 0, invalidPos, invalidPos}, {&sequence{block: 0xFFFEFF00, count: 1}, 0, 1, 7}, {&sequence{block: 0xFFFEFF00, count: 100}, 0, 1, 7}, {&sequence{block: 0xFFFFC0FF, count: 0}, 0, invalidPos, invalidPos}, {&sequence{block: 0xFFFFC0FF, count: 1}, 0, 2, 2}, {&sequence{block: 0xFFFFC0FF, count: 100}, 0, 2, 2}, {&sequence{block: 0xFFFFFF00, count: 0}, 0, invalidPos, invalidPos}, {&sequence{block: 0xFFFFFF00, count: 1}, 0, 3, 0}, {&sequence{block: 0xFFFFFF00, count: 100}, 0, 3, 0}, {&sequence{block: 0xFFFFFFFE, count: 0}, 0, invalidPos, invalidPos}, {&sequence{block: 0xFFFFFFFE, count: 1}, 0, 3, 7}, {&sequence{block: 0xFFFFFFFE, count: 100}, 0, 3, 7}, {&sequence{block: 0xFFFFFFFF, count: 0}, 0, invalidPos, invalidPos}, {&sequence{block: 0xFFFFFFFF, count: 1}, 0, invalidPos, invalidPos}, {&sequence{block: 0xFFFFFFFF, count: 100}, 0, invalidPos, invalidPos}, // now test with offset {&sequence{block: 0x0, count: 0}, 0, invalidPos, invalidPos}, {&sequence{block: 0x0, count: 0}, 31, invalidPos, invalidPos}, {&sequence{block: 0x0, count: 0}, 32, invalidPos, invalidPos}, {&sequence{block: 0x0, count: 1}, 0, 0, 0}, {&sequence{block: 0x0, count: 1}, 1, 0, 1}, {&sequence{block: 0x0, count: 1}, 31, 3, 7}, {&sequence{block: 0xF0FF0000, count: 1}, 0, 0, 4}, {&sequence{block: 0xF0FF0000, count: 1}, 8, 2, 0}, {&sequence{block: 0xFFFFFFFF, count: 1}, 0, invalidPos, invalidPos}, {&sequence{block: 0xFFFFFFFF, count: 1}, 16, invalidPos, invalidPos}, {&sequence{block: 0xFFFFFFFF, count: 1}, 31, invalidPos, invalidPos}, {&sequence{block: 0xFFFFFFFE, count: 1}, 0, 3, 7}, {&sequence{block: 0xFFFFFFFF, count: 2}, 0, invalidPos, invalidPos}, {&sequence{block: 0xFFFFFFFF, count: 2}, 32, invalidPos, invalidPos}, } for n, i := range input { b, bb, err := i.head.getAvailableBit(i.from) if b != i.bytePos || bb != i.bitPos { t.Fatalf("Error in sequence.getAvailableBit(%d) (%d).\nExp: (%d, %d)\nGot: (%d, %d), err: %v", i.from, n, i.bytePos, i.bitPos, b, bb, err) } } } func TestSequenceEqual(t *testing.T) { input := []struct { first *sequence second *sequence areEqual bool }{ {&sequence{block: 0x0, count: 8, next: nil}, &sequence{block: 0x0, count: 8}, true}, {&sequence{block: 0x0, count: 0, next: nil}, &sequence{block: 0x0, count: 0}, true}, {&sequence{block: 0x0, count: 2, next: nil}, &sequence{block: 0x0, count: 1, next: &sequence{block: 0x0, count: 1}}, false}, {&sequence{block: 0x0, count: 2, next: &sequence{block: 0x1, count: 1}}, &sequence{block: 0x0, count: 2}, false}, {&sequence{block: 0x12345678, count: 8, next: nil}, &sequence{block: 0x12345678, count: 8}, true}, {&sequence{block: 0x12345678, count: 8, next: nil}, &sequence{block: 0x12345678, count: 9}, false}, {&sequence{block: 0x12345678, count: 1, next: &sequence{block: 0XFFFFFFFF, count: 1}}, &sequence{block: 0x12345678, count: 1}, false}, {&sequence{block: 0x12345678, count: 1}, &sequence{block: 0x12345678, count: 1, next: &sequence{block: 0XFFFFFFFF, count: 1}}, false}, } for n, i := range input { if i.areEqual != i.first.equal(i.second) { t.Fatalf("Error in sequence.equal() (%d).\nExp: %t\nGot: %t,", n, i.areEqual, !i.areEqual) } } } func TestSequenceCopy(t *testing.T) { s := getTestSequence() n := s.getCopy() if !s.equal(n) { t.Fatalf("copy of s failed") } if n == s { t.Fatalf("not true copy of s") } } func TestGetFirstAvailable(t *testing.T) { input := []struct { mask *sequence bytePos uint64 bitPos uint64 }{ {&sequence{block: 0xffffffff, count: 2048}, invalidPos, invalidPos}, {&sequence{block: 0x0, count: 8}, 0, 0}, {&sequence{block: 0x80000000, count: 8}, 0, 1}, {&sequence{block: 0xC0000000, count: 8}, 0, 2}, {&sequence{block: 0xE0000000, count: 8}, 0, 3}, {&sequence{block: 0xF0000000, count: 8}, 0, 4}, {&sequence{block: 0xF8000000, count: 8}, 0, 5}, {&sequence{block: 0xFC000000, count: 8}, 0, 6}, {&sequence{block: 0xFE000000, count: 8}, 0, 7}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0x00000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 4, 0}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 4, 1}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xC0000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 4, 2}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xE0000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 4, 3}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xF0000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 4, 4}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xF8000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 4, 5}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFC000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 4, 6}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFE000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 4, 7}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFF000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 0}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFF800000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 1}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFC00000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 2}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFE00000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 3}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFF00000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 4}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFF80000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 5}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFFC0000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 6}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFFE0000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 7}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xfffffffe, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 7, 7}, {&sequence{block: 0xffffffff, count: 2, next: &sequence{block: 0x0, count: 6}}, 8, 0}, } for n, i := range input { bytePos, bitPos, _ := getFirstAvailable(i.mask, 0) if bytePos != i.bytePos || bitPos != i.bitPos { t.Fatalf("Error in (%d) getFirstAvailable(). Expected (%d, %d). Got (%d, %d)", n, i.bytePos, i.bitPos, bytePos, bitPos) } } } func TestFindSequence(t *testing.T) { input := []struct { head *sequence bytePos uint64 precBlocks uint64 inBlockBytePos uint64 }{ {&sequence{block: 0xffffffff, count: 0}, 0, 0, invalidPos}, {&sequence{block: 0xffffffff, count: 0}, 31, 0, invalidPos}, {&sequence{block: 0xffffffff, count: 0}, 100, 0, invalidPos}, {&sequence{block: 0x0, count: 1}, 0, 0, 0}, {&sequence{block: 0x0, count: 1}, 1, 0, 1}, {&sequence{block: 0x0, count: 1}, 31, 0, invalidPos}, {&sequence{block: 0x0, count: 1}, 60, 0, invalidPos}, {&sequence{block: 0xffffffff, count: 10}, 0, 0, 0}, {&sequence{block: 0xffffffff, count: 10}, 3, 0, 3}, {&sequence{block: 0xffffffff, count: 10}, 4, 1, 0}, {&sequence{block: 0xffffffff, count: 10}, 7, 1, 3}, {&sequence{block: 0xffffffff, count: 10}, 8, 2, 0}, {&sequence{block: 0xffffffff, count: 10}, 39, 9, 3}, {&sequence{block: 0xffffffff, count: 10, next: &sequence{block: 0xcc000000, count: 10}}, 79, 9, 3}, {&sequence{block: 0xffffffff, count: 10, next: &sequence{block: 0xcc000000, count: 10}}, 80, 0, invalidPos}, } for n, i := range input { _, _, precBlocks, inBlockBytePos := findSequence(i.head, i.bytePos) if precBlocks != i.precBlocks || inBlockBytePos != i.inBlockBytePos { t.Fatalf("Error in (%d) findSequence(). Expected (%d, %d). Got (%d, %d)", n, i.precBlocks, i.inBlockBytePos, precBlocks, inBlockBytePos) } } } func TestCheckIfAvailable(t *testing.T) { input := []struct { head *sequence ordinal uint64 bytePos uint64 bitPos uint64 }{ {&sequence{block: 0xffffffff, count: 0}, 0, invalidPos, invalidPos}, {&sequence{block: 0xffffffff, count: 0}, 31, invalidPos, invalidPos}, {&sequence{block: 0xffffffff, count: 0}, 100, invalidPos, invalidPos}, {&sequence{block: 0x0, count: 1}, 0, 0, 0}, {&sequence{block: 0x0, count: 1}, 1, 0, 1}, {&sequence{block: 0x0, count: 1}, 31, 3, 7}, {&sequence{block: 0x0, count: 1}, 60, invalidPos, invalidPos}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0x800000ff, count: 1}}, 31, invalidPos, invalidPos}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0x800000ff, count: 1}}, 32, invalidPos, invalidPos}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0x800000ff, count: 1}}, 33, 4, 1}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xC00000ff, count: 1}}, 33, invalidPos, invalidPos}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xC00000ff, count: 1}}, 34, 4, 2}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xC00000ff, count: 1, next: &sequence{block: 0x0, count: 1}}}, 55, 6, 7}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xC00000ff, count: 1, next: &sequence{block: 0x0, count: 1}}}, 56, invalidPos, invalidPos}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xC00000ff, count: 1, next: &sequence{block: 0x0, count: 1}}}, 63, invalidPos, invalidPos}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xC00000ff, count: 1, next: &sequence{block: 0x0, count: 1}}}, 64, 8, 0}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xC00000ff, count: 1, next: &sequence{block: 0x0, count: 1}}}, 95, 11, 7}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xC00000ff, count: 1, next: &sequence{block: 0x0, count: 1}}}, 96, invalidPos, invalidPos}, } for n, i := range input { bytePos, bitPos, err := checkIfAvailable(i.head, i.ordinal) if bytePos != i.bytePos || bitPos != i.bitPos { t.Fatalf("Error in (%d) checkIfAvailable(ord:%d). Expected (%d, %d). Got (%d, %d). err: %v", n, i.ordinal, i.bytePos, i.bitPos, bytePos, bitPos, err) } } } func TestMergeSequences(t *testing.T) { input := []struct { original *sequence merged *sequence }{ {&sequence{block: 0xFE000000, count: 8, next: &sequence{block: 0xFE000000, count: 2}}, &sequence{block: 0xFE000000, count: 10}}, {&sequence{block: 0xFFFFFFFF, count: 8, next: &sequence{block: 0xFFFFFFFF, count: 1}}, &sequence{block: 0xFFFFFFFF, count: 9}}, {&sequence{block: 0xFFFFFFFF, count: 1, next: &sequence{block: 0xFFFFFFFF, count: 8}}, &sequence{block: 0xFFFFFFFF, count: 9}}, {&sequence{block: 0xFFFFFFF0, count: 8, next: &sequence{block: 0xFFFFFFF0, count: 1}}, &sequence{block: 0xFFFFFFF0, count: 9}}, {&sequence{block: 0xFFFFFFF0, count: 1, next: &sequence{block: 0xFFFFFFF0, count: 8}}, &sequence{block: 0xFFFFFFF0, count: 9}}, {&sequence{block: 0xFE, count: 8, next: &sequence{block: 0xFE, count: 1, next: &sequence{block: 0xFE, count: 5}}}, &sequence{block: 0xFE, count: 14}}, {&sequence{block: 0xFE, count: 8, next: &sequence{block: 0xFE, count: 1, next: &sequence{block: 0xFE, count: 5, next: &sequence{block: 0xFF, count: 1}}}}, &sequence{block: 0xFE, count: 14, next: &sequence{block: 0xFF, count: 1}}}, // No merge {&sequence{block: 0xFE, count: 8, next: &sequence{block: 0xF8, count: 1, next: &sequence{block: 0xFE, count: 5}}}, &sequence{block: 0xFE, count: 8, next: &sequence{block: 0xF8, count: 1, next: &sequence{block: 0xFE, count: 5}}}}, // No merge from head: // Merge function tries to merge from passed head. If it can't merge with next, it does not reattempt with next as head {&sequence{block: 0xFE, count: 8, next: &sequence{block: 0xFF, count: 1, next: &sequence{block: 0xFF, count: 5}}}, &sequence{block: 0xFE, count: 8, next: &sequence{block: 0xFF, count: 6}}}, } for n, i := range input { mergeSequences(i.original) for !i.merged.equal(i.original) { t.Fatalf("Error in (%d) mergeSequences().\nExp: %s\nGot: %s,", n, i.merged.toString(), i.original.toString()) } } } func TestPushReservation(t *testing.T) { input := []struct { mask *sequence bytePos uint64 bitPos uint64 newMask *sequence }{ // Create first sequence and fill in 8 addresses starting from address 0 {&sequence{block: 0x0, count: 8, next: nil}, 0, 0, &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 7, next: nil}}}, {&sequence{block: 0x80000000, count: 8}, 0, 1, &sequence{block: 0xC0000000, count: 1, next: &sequence{block: 0x80000000, count: 7, next: nil}}}, {&sequence{block: 0xC0000000, count: 8}, 0, 2, &sequence{block: 0xE0000000, count: 1, next: &sequence{block: 0xC0000000, count: 7, next: nil}}}, {&sequence{block: 0xE0000000, count: 8}, 0, 3, &sequence{block: 0xF0000000, count: 1, next: &sequence{block: 0xE0000000, count: 7, next: nil}}}, {&sequence{block: 0xF0000000, count: 8}, 0, 4, &sequence{block: 0xF8000000, count: 1, next: &sequence{block: 0xF0000000, count: 7, next: nil}}}, {&sequence{block: 0xF8000000, count: 8}, 0, 5, &sequence{block: 0xFC000000, count: 1, next: &sequence{block: 0xF8000000, count: 7, next: nil}}}, {&sequence{block: 0xFC000000, count: 8}, 0, 6, &sequence{block: 0xFE000000, count: 1, next: &sequence{block: 0xFC000000, count: 7, next: nil}}}, {&sequence{block: 0xFE000000, count: 8}, 0, 7, &sequence{block: 0xFF000000, count: 1, next: &sequence{block: 0xFE000000, count: 7, next: nil}}}, {&sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 7}}, 0, 1, &sequence{block: 0xC0000000, count: 1, next: &sequence{block: 0x0, count: 7, next: nil}}}, // Create second sequence and fill in 8 addresses starting from address 32 {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0x00000000, count: 1, next: &sequence{block: 0xffffffff, count: 6, next: nil}}}, 4, 0, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 4, 1, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xC0000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xC0000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 4, 2, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xE0000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xE0000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 4, 3, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xF0000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xF0000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 4, 4, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xF8000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xF8000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 4, 5, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFC000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFC000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 4, 6, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFE000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFE000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 4, 7, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFF000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, // fill in 8 addresses starting from address 40 {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFF000000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 0, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFF800000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFF800000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 1, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFC00000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFC00000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 2, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFE00000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFE00000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 3, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFF00000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFF00000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 4, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFF80000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFF80000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 5, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFFC0000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFFC0000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 6, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFFE0000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFFE0000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}, 5, 7, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xFFFF0000, count: 1, next: &sequence{block: 0xffffffff, count: 6}}}}, // Insert new sequence {&sequence{block: 0xffffffff, count: 2, next: &sequence{block: 0x0, count: 6}}, 8, 0, &sequence{block: 0xffffffff, count: 2, next: &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 5}}}}, {&sequence{block: 0xffffffff, count: 2, next: &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 5}}}, 8, 1, &sequence{block: 0xffffffff, count: 2, next: &sequence{block: 0xC0000000, count: 1, next: &sequence{block: 0x0, count: 5}}}}, // Merge affected with next {&sequence{block: 0xffffffff, count: 7, next: &sequence{block: 0xfffffffe, count: 2, next: &sequence{block: 0xffffffff, count: 1}}}, 31, 7, &sequence{block: 0xffffffff, count: 8, next: &sequence{block: 0xfffffffe, count: 1, next: &sequence{block: 0xffffffff, count: 1}}}}, {&sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xfffffffc, count: 1, next: &sequence{block: 0xfffffffe, count: 6}}}, 7, 6, &sequence{block: 0xffffffff, count: 1, next: &sequence{block: 0xfffffffe, count: 7}}}, // Merge affected with next and next.next {&sequence{block: 0xffffffff, count: 7, next: &sequence{block: 0xfffffffe, count: 1, next: &sequence{block: 0xffffffff, count: 1}}}, 31, 7, &sequence{block: 0xffffffff, count: 9}}, {&sequence{block: 0xffffffff, count: 7, next: &sequence{block: 0xfffffffe, count: 1}}, 31, 7, &sequence{block: 0xffffffff, count: 8}}, // Merge affected with previous and next {&sequence{block: 0xffffffff, count: 7, next: &sequence{block: 0xfffffffe, count: 1, next: &sequence{block: 0xffffffff, count: 1}}}, 31, 7, &sequence{block: 0xffffffff, count: 9}}, // Redundant push: No change {&sequence{block: 0xffff0000, count: 1}, 0, 0, &sequence{block: 0xffff0000, count: 1}}, {&sequence{block: 0xffff0000, count: 7}, 25, 7, &sequence{block: 0xffff0000, count: 7}}, {&sequence{block: 0xffffffff, count: 7, next: &sequence{block: 0xfffffffe, count: 1, next: &sequence{block: 0xffffffff, count: 1}}}, 7, 7, &sequence{block: 0xffffffff, count: 7, next: &sequence{block: 0xfffffffe, count: 1, next: &sequence{block: 0xffffffff, count: 1}}}}, // Set last bit {&sequence{block: 0x0, count: 8}, 31, 7, &sequence{block: 0x0, count: 7, next: &sequence{block: 0x1, count: 1}}}, // Set bit in a middle sequence in the first block, first bit {&sequence{block: 0x40000000, count: 1, next: &sequence{block: 0x0, count: 6, next: &sequence{block: 0x1, count: 1}}}, 4, 0, &sequence{block: 0x40000000, count: 1, next: &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 5, next: &sequence{block: 0x1, count: 1}}}}}, // Set bit in a middle sequence in the first block, first bit (merge involved) {&sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 6, next: &sequence{block: 0x1, count: 1}}}, 4, 0, &sequence{block: 0x80000000, count: 2, next: &sequence{block: 0x0, count: 5, next: &sequence{block: 0x1, count: 1}}}}, // Set bit in a middle sequence in the first block, last bit {&sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 6, next: &sequence{block: 0x1, count: 1}}}, 4, 31, &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x1, count: 1, next: &sequence{block: 0x0, count: 5, next: &sequence{block: 0x1, count: 1}}}}}, // Set bit in a middle sequence in the first block, middle bit {&sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 6, next: &sequence{block: 0x1, count: 1}}}, 4, 16, &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x8000, count: 1, next: &sequence{block: 0x0, count: 5, next: &sequence{block: 0x1, count: 1}}}}}, // Set bit in a middle sequence in a middle block, first bit {&sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 6, next: &sequence{block: 0x1, count: 1}}}, 16, 0, &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 3, next: &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 2, next: &sequence{block: 0x1, count: 1}}}}}}, // Set bit in a middle sequence in a middle block, last bit {&sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 6, next: &sequence{block: 0x1, count: 1}}}, 16, 31, &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 3, next: &sequence{block: 0x1, count: 1, next: &sequence{block: 0x0, count: 2, next: &sequence{block: 0x1, count: 1}}}}}}, // Set bit in a middle sequence in a middle block, middle bit {&sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 6, next: &sequence{block: 0x1, count: 1}}}, 16, 15, &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 3, next: &sequence{block: 0x10000, count: 1, next: &sequence{block: 0x0, count: 2, next: &sequence{block: 0x1, count: 1}}}}}}, // Set bit in a middle sequence in the last block, first bit {&sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 6, next: &sequence{block: 0x1, count: 1}}}, 24, 0, &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 5, next: &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x1, count: 1}}}}}, // Set bit in a middle sequence in the last block, last bit {&sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 6, next: &sequence{block: 0x4, count: 1}}}, 24, 31, &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 5, next: &sequence{block: 0x1, count: 1, next: &sequence{block: 0x4, count: 1}}}}}, // Set bit in a middle sequence in the last block, last bit (merge involved) {&sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 6, next: &sequence{block: 0x1, count: 1}}}, 24, 31, &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 5, next: &sequence{block: 0x1, count: 2}}}}, // Set bit in a middle sequence in the last block, middle bit {&sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 6, next: &sequence{block: 0x1, count: 1}}}, 24, 16, &sequence{block: 0x80000000, count: 1, next: &sequence{block: 0x0, count: 5, next: &sequence{block: 0x8000, count: 1, next: &sequence{block: 0x1, count: 1}}}}}, } for n, i := range input { mask := pushReservation(i.bytePos, i.bitPos, i.mask, false) if !mask.equal(i.newMask) { t.Fatalf("Error in (%d) pushReservation():\n%s + (%d,%d):\nExp: %s\nGot: %s,", n, i.mask.toString(), i.bytePos, i.bitPos, i.newMask.toString(), mask.toString()) } } } func TestSerializeDeserialize(t *testing.T) { s := getTestSequence() data, err := s.toByteArray() if err != nil { t.Fatal(err) } r := &sequence{} err = r.fromByteArray(data) if err != nil { t.Fatal(err) } if !s.equal(r) { t.Fatalf("Sequences are different: \n%v\n%v", s, r) } } func getTestSequence() *sequence { // Returns a custom sequence of 1024 * 32 bits return &sequence{ block: 0XFFFFFFFF, count: 100, next: &sequence{ block: 0xFFFFFFFE, count: 1, next: &sequence{ block: 0xFF000000, count: 10, next: &sequence{ block: 0XFFFFFFFF, count: 50, next: &sequence{ block: 0XFFFFFFFC, count: 1, next: &sequence{ block: 0xFF800000, count: 1, next: &sequence{ block: 0XFFFFFFFF, count: 87, next: &sequence{ block: 0x0, count: 150, next: &sequence{ block: 0XFFFFFFFF, count: 200, next: &sequence{ block: 0x0000FFFF, count: 1, next: &sequence{ block: 0x0, count: 399, next: &sequence{ block: 0XFFFFFFFF, count: 23, next: &sequence{ block: 0x1, count: 1, }, }, }, }, }, }, }, }, }, }, }, }, } } func TestSet(t *testing.T) { hnd, err := NewHandle("", nil, "", 1024*32) if err != nil { t.Fatal(err) } hnd.head = getTestSequence() firstAv := uint64(32*100 + 31) last := uint64(1024*32 - 1) if hnd.IsSet(100000) { t.Fatal("IsSet() returned wrong result") } if !hnd.IsSet(0) { t.Fatal("IsSet() returned wrong result") } if hnd.IsSet(firstAv) { t.Fatal("IsSet() returned wrong result") } if !hnd.IsSet(last) { t.Fatal("IsSet() returned wrong result") } if err := hnd.Set(0); err == nil { t.Fatalf("Expected failure, but succeeded") } os, err := hnd.SetAny() if err != nil { t.Fatalf("Unexpected failure: %v", err) } if os != firstAv { t.Fatalf("SetAny returned unexpected ordinal. Expected %d. Got %d.", firstAv, os) } if !hnd.IsSet(firstAv) { t.Fatal("IsSet() returned wrong result") } if err := hnd.Unset(firstAv); err != nil { t.Fatalf("Unexpected failure: %v", err) } if hnd.IsSet(firstAv) { t.Fatal("IsSet() returned wrong result") } if err := hnd.Set(firstAv); err != nil { t.Fatalf("Unexpected failure: %v", err) } if err := hnd.Set(last); err == nil { t.Fatalf("Expected failure, but succeeded") } } func TestSetUnset(t *testing.T) { numBits := uint64(32 * blockLen) hnd, err := NewHandle("", nil, "", numBits) if err != nil { t.Fatal(err) } if err := hnd.Set(uint64(32 * blockLen)); err == nil { t.Fatalf("Expected failure, but succeeded") } if err := hnd.Unset(uint64(32 * blockLen)); err == nil { t.Fatalf("Expected failure, but succeeded") } // set and unset all one by one for hnd.Unselected() > 0 { if _, err := hnd.SetAny(); err != nil { t.Fatal(err) } } if _, err := hnd.SetAny(); err != ErrNoBitAvailable { t.Fatalf("Expected error. Got success") } if _, err := hnd.SetAnyInRange(10, 20); err != ErrNoBitAvailable { t.Fatalf("Expected error. Got success") } if err := hnd.Set(50); err != ErrBitAllocated { t.Fatalf("Expected error. Got %v: %s", err, hnd) } i := uint64(0) for hnd.Unselected() < numBits { if err := hnd.Unset(i); err != nil { t.Fatal(err) } i++ } } func TestSetInRange(t *testing.T) { numBits := uint64(1024 * blockLen) hnd, err := NewHandle("", nil, "", numBits) if err != nil { t.Fatal(err) } hnd.head = getTestSequence() firstAv := uint64(100*blockLen + blockLen - 1) if o, err := hnd.SetAnyInRange(4, 3); err == nil { t.Fatalf("Expected failure. Got success with ordinal:%d", o) } if o, err := hnd.SetAnyInRange(5, 5); err == nil { t.Fatalf("Expected failure. Got success with ordinal:%d", o) } if o, err := hnd.SetAnyInRange(0, numBits); err == nil { t.Fatalf("Expected failure. Got success with ordinal:%d", o) } o, err := hnd.SetAnyInRange(100*uint64(blockLen), 101*uint64(blockLen)) if err != nil { t.Fatalf("Unexpected failure: (%d, %v)", o, err) } if o != firstAv { t.Fatalf("Unexpected ordinal: %d", o) } if o, err := hnd.SetAnyInRange(0, uint64(blockLen)); err == nil { t.Fatalf("Expected failure. Got success with ordinal:%d", o) } if o, err := hnd.SetAnyInRange(0, firstAv-1); err == nil { t.Fatalf("Expected failure. Got success with ordinal:%d", o) } if o, err := hnd.SetAnyInRange(111*uint64(blockLen), 161*uint64(blockLen)); err == nil { t.Fatalf("Expected failure. Got success with ordinal:%d", o) } o, err = hnd.SetAnyInRange(161*uint64(blockLen), 162*uint64(blockLen)) if err != nil { t.Fatal(err) } if o != 161*uint64(blockLen)+30 { t.Fatalf("Unexpected ordinal: %d", o) } o, err = hnd.SetAnyInRange(161*uint64(blockLen), 162*uint64(blockLen)) if err != nil { t.Fatal(err) } if o != 161*uint64(blockLen)+31 { t.Fatalf("Unexpected ordinal: %d", o) } o, err = hnd.SetAnyInRange(161*uint64(blockLen), 162*uint64(blockLen)) if err == nil { t.Fatalf("Expected failure. Got success with ordinal:%d", o) } if _, err := hnd.SetAnyInRange(0, numBits-1); err != nil { t.Fatalf("Unexpected failure: %v", err) } // create a non multiple of 32 mask hnd, err = NewHandle("", nil, "", 30) if err != nil { t.Fatal(err) } // set all bit in the first range for hnd.Unselected() > 22 { if o, err := hnd.SetAnyInRange(0, 7); err != nil { t.Fatalf("Unexpected failure: (%d, %v)", o, err) } } // try one more set, which should fail o, err = hnd.SetAnyInRange(0, 7) if err == nil { t.Fatalf("Expected failure. Got success with ordinal:%d", o) } if err != ErrNoBitAvailable { t.Fatalf("Unexpected error: %v", err) } // set all bit in a second range for hnd.Unselected() > 14 { if o, err := hnd.SetAnyInRange(8, 15); err != nil { t.Fatalf("Unexpected failure: (%d, %v)", o, err) } } // try one more set, which should fail o, err = hnd.SetAnyInRange(0, 15) if err == nil { t.Fatalf("Expected failure. Got success with ordinal:%d", o) } if err != ErrNoBitAvailable { t.Fatalf("Unexpected error: %v", err) } // set all bit in a range which includes the last bit for hnd.Unselected() > 12 { if o, err := hnd.SetAnyInRange(28, 29); err != nil { t.Fatalf("Unexpected failure: (%d, %v)", o, err) } } o, err = hnd.SetAnyInRange(28, 29) if err == nil { t.Fatalf("Expected failure. Got success with ordinal:%d", o) } if err != ErrNoBitAvailable { t.Fatalf("Unexpected error: %v", err) } } // This one tests an allocation pattern which unveiled an issue in pushReservation // Specifically a failure in detecting when we are in the (B) case (the bit to set // belongs to the last block of the current sequence). Because of a bug, code // was assuming the bit belonged to a block in the middle of the current sequence. // Which in turn caused an incorrect allocation when requesting a bit which is not // in the first or last sequence block. func TestSetAnyInRange(t *testing.T) { numBits := uint64(8 * blockLen) hnd, err := NewHandle("", nil, "", numBits) if err != nil { t.Fatal(err) } if err := hnd.Set(0); err != nil { t.Fatal(err) } if err := hnd.Set(255); err != nil { t.Fatal(err) } o, err := hnd.SetAnyInRange(128, 255) if err != nil { t.Fatal(err) } if o != 128 { t.Fatalf("Unexpected ordinal: %d", o) } o, err = hnd.SetAnyInRange(128, 255) if err != nil { t.Fatal(err) } if o != 129 { t.Fatalf("Unexpected ordinal: %d", o) } o, err = hnd.SetAnyInRange(246, 255) if err != nil { t.Fatal(err) } if o != 246 { t.Fatalf("Unexpected ordinal: %d", o) } o, err = hnd.SetAnyInRange(246, 255) if err != nil { t.Fatal(err) } if o != 247 { t.Fatalf("Unexpected ordinal: %d", o) } } func TestMethods(t *testing.T) { numBits := uint64(256 * blockLen) hnd, err := NewHandle("path/to/data", nil, "sequence1", uint64(numBits)) if err != nil { t.Fatal(err) } if hnd.Bits() != numBits { t.Fatalf("Unexpected bit number: %d", hnd.Bits()) } if hnd.Unselected() != numBits { t.Fatalf("Unexpected bit number: %d", hnd.Unselected()) } exp := "(0x0, 256)->end" if hnd.head.toString() != exp { t.Fatalf("Unexpected sequence string: %s", hnd.head.toString()) } for i := 0; i < 192; i++ { _, err := hnd.SetAny() if err != nil { t.Fatal(err) } } exp = "(0xffffffff, 6)->(0x0, 250)->end" if hnd.head.toString() != exp { t.Fatalf("Unexpected sequence string: %s", hnd.head.toString()) } } func TestRandomAllocateDeallocate(t *testing.T) { ds, err := randomLocalStore() if err != nil { t.Fatal(err) } numBits := int(16 * blockLen) hnd, err := NewHandle("bitseq-test/data/", ds, "test1", uint64(numBits)) if err != nil { t.Fatal(err) } seed := time.Now().Unix() rand.Seed(seed) // Allocate all bits using a random pattern pattern := rand.Perm(numBits) for _, bit := range pattern { err := hnd.Set(uint64(bit)) if err != nil { t.Fatalf("Unexpected failure on allocation of %d: %v.\nSeed: %d.\n%s", bit, err, seed, hnd) } } if hnd.Unselected() != 0 { t.Fatalf("Expected full sequence. Instead found %d free bits. Seed: %d.\n%s", hnd.unselected, seed, hnd) } if hnd.head.toString() != "(0xffffffff, 16)->end" { t.Fatalf("Unexpected db: %s", hnd.head.toString()) } // Deallocate all bits using a random pattern pattern = rand.Perm(numBits) for _, bit := range pattern { err := hnd.Unset(uint64(bit)) if err != nil { t.Fatalf("Unexpected failure on deallocation of %d: %v.\nSeed: %d.\n%s", bit, err, seed, hnd) } } if hnd.Unselected() != uint64(numBits) { t.Fatalf("Expected full sequence. Instead found %d free bits. Seed: %d.\n%s", hnd.unselected, seed, hnd) } if hnd.head.toString() != "(0x0, 16)->end" { t.Fatalf("Unexpected db: %s", hnd.head.toString()) } err = hnd.Destroy() if err != nil { t.Fatal(err) } } func TestAllocateRandomDeallocate(t *testing.T) { ds, err := randomLocalStore() if err != nil { t.Fatal(err) } numBlocks := uint32(8) numBits := int(numBlocks * blockLen) hnd, err := NewHandle("bitseq-test/data/", ds, "test1", uint64(numBits)) if err != nil { t.Fatal(err) } expected := &sequence{block: 0xffffffff, count: uint64(numBlocks / 2), next: &sequence{block: 0x0, count: uint64(numBlocks / 2)}} // Allocate first half of the bits for i := 0; i < numBits/2; i++ { _, err := hnd.SetAny() if err != nil { t.Fatalf("Unexpected failure on allocation %d: %v\n%s", i, err, hnd) } } if hnd.Unselected() != uint64(numBits/2) { t.Fatalf("Expected full sequence. Instead found %d free bits. %s", hnd.unselected, hnd) } if !hnd.head.equal(expected) { t.Fatalf("Unexpected sequence. Got:\n%s", hnd) } seed := time.Now().Unix() rand.Seed(seed) // Deallocate half of the allocated bits following a random pattern pattern := rand.Perm(numBits / 2) for i := 0; i < numBits/4; i++ { bit := pattern[i] err := hnd.Unset(uint64(bit)) if err != nil { t.Fatalf("Unexpected failure on deallocation of %d: %v.\nSeed: %d.\n%s", bit, err, seed, hnd) } } if hnd.Unselected() != uint64(3*numBits/4) { t.Fatalf("Expected full sequence. Instead found %d free bits.\nSeed: %d.\n%s", hnd.unselected, seed, hnd) } // Request a quarter of bits for i := 0; i < numBits/4; i++ { _, err := hnd.SetAny() if err != nil { t.Fatalf("Unexpected failure on allocation %d: %v\nSeed: %d\n%s", i, err, seed, hnd) } } if hnd.Unselected() != uint64(numBits/2) { t.Fatalf("Expected half sequence. Instead found %d free bits.\nSeed: %d\n%s", hnd.unselected, seed, hnd) } if !hnd.head.equal(expected) { t.Fatalf("Unexpected sequence. Got:\n%s", hnd) } err = hnd.Destroy() if err != nil { t.Fatal(err) } } func TestRetrieveFromStore(t *testing.T) { ds, err := randomLocalStore() if err != nil { t.Fatal(err) } numBits := int(8 * blockLen) hnd, err := NewHandle("bitseq-test/data/", ds, "test1", uint64(numBits)) if err != nil { t.Fatal(err) } // Allocate first half of the bits for i := 0; i < numBits/2; i++ { _, err := hnd.SetAny() if err != nil { t.Fatalf("Unexpected failure on allocation %d: %v\n%s", i, err, hnd) } } hnd0 := hnd.String() // Retrieve same handle hnd, err = NewHandle("bitseq-test/data/", ds, "test1", uint64(numBits)) if err != nil { t.Fatal(err) } hnd1 := hnd.String() if hnd1 != hnd0 { t.Fatalf("%v\n%v", hnd0, hnd1) } err = hnd.Destroy() if err != nil { t.Fatal(err) } } func TestIsCorrupted(t *testing.T) { ds, err := randomLocalStore() if err != nil { t.Fatal(err) } // Negative test hnd, err := NewHandle("bitseq-test/data/", ds, "test_corrupted", 1024) if err != nil { t.Fatal(err) } if hnd.runConsistencyCheck() { t.Fatalf("Unexpected corrupted for %s", hnd) } if err := hnd.CheckConsistency(); err != nil { t.Fatal(err) } hnd.Set(0) if hnd.runConsistencyCheck() { t.Fatalf("Unexpected corrupted for %s", hnd) } hnd.Set(1023) if hnd.runConsistencyCheck() { t.Fatalf("Unexpected corrupted for %s", hnd) } if err := hnd.CheckConsistency(); err != nil { t.Fatal(err) } // Try real corrupted ipam handles found in the local store files reported by three docker users, // plus a generic ipam handle from docker 1.9.1. This last will fail as well, because of how the // last node in the sequence is expressed (This is true for IPAM handle only, because of the broadcast // address reservation: last bit). This will allow an application using bitseq that runs a consistency // check to detect and replace the 1.9.0/1 old vulnerable handle with the new one. input := []*Handle{ { id: "LocalDefault/172.17.0.0/16", bits: 65536, unselected: 65412, head: &sequence{ block: 0xffffffff, count: 3, next: &sequence{ block: 0xffffffbf, count: 0, next: &sequence{ block: 0xfe98816e, count: 1, next: &sequence{ block: 0xffffffff, count: 0, next: &sequence{ block: 0xe3bc0000, count: 1, next: &sequence{ block: 0x0, count: 2042, next: &sequence{ block: 0x1, count: 1, next: &sequence{ block: 0x0, count: 0, }, }, }, }, }, }, }, }, }, { id: "LocalDefault/172.17.0.0/16", bits: 65536, unselected: 65319, head: &sequence{ block: 0xffffffff, count: 7, next: &sequence{ block: 0xffffff7f, count: 0, next: &sequence{ block: 0xffffffff, count: 0, next: &sequence{ block: 0x2000000, count: 1, next: &sequence{ block: 0x0, count: 2039, next: &sequence{ block: 0x1, count: 1, next: &sequence{ block: 0x0, count: 0, }, }, }, }, }, }, }, }, { id: "LocalDefault/172.17.0.0/16", bits: 65536, unselected: 65456, head: &sequence{ block: 0xffffffff, count: 2, next: &sequence{ block: 0xfffbffff, count: 0, next: &sequence{ block: 0xffd07000, count: 1, next: &sequence{ block: 0x0, count: 333, next: &sequence{ block: 0x40000000, count: 1, next: &sequence{ block: 0x0, count: 1710, next: &sequence{ block: 0x1, count: 1, next: &sequence{ block: 0x0, count: 0, }, }, }, }, }, }, }, }, }, } for idx, hnd := range input { if !hnd.runConsistencyCheck() { t.Fatalf("Expected corrupted for (%d): %s", idx, hnd) } if hnd.runConsistencyCheck() { t.Fatalf("Sequence still marked corrupted (%d): %s", idx, hnd) } } }