seaweedfs/weed/filer/filechunks_test.go

540 lines
17 KiB
Go
Raw Normal View History

2020-09-01 07:21:19 +00:00
package filer
2018-05-21 00:06:09 +00:00
import (
2020-08-16 22:16:46 +00:00
"fmt"
2018-05-21 00:06:09 +00:00
"log"
2020-08-16 07:49:26 +00:00
"math"
2020-08-23 21:09:25 +00:00
"math/rand"
"strconv"
2018-05-27 18:52:26 +00:00
"testing"
2018-05-21 00:08:54 +00:00
2020-08-16 07:49:26 +00:00
"github.com/stretchr/testify/assert"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
2018-05-21 00:06:09 +00:00
)
func TestCompactFileChunks(t *testing.T) {
chunks := []*filer_pb.FileChunk{
{Offset: 10, Size: 100, FileId: "abc", ModifiedTsNs: 50},
{Offset: 100, Size: 100, FileId: "def", ModifiedTsNs: 100},
{Offset: 200, Size: 100, FileId: "ghi", ModifiedTsNs: 200},
{Offset: 110, Size: 200, FileId: "jkl", ModifiedTsNs: 300},
}
compacted, garbage := CompactFileChunks(nil, chunks)
if len(compacted) != 3 {
t.Fatalf("unexpected compacted: %d", len(compacted))
}
2018-11-19 01:05:36 +00:00
if len(garbage) != 1 {
t.Fatalf("unexpected garbage: %d", len(garbage))
}
}
func TestCompactFileChunks2(t *testing.T) {
chunks := []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "abc", ModifiedTsNs: 50},
{Offset: 100, Size: 100, FileId: "def", ModifiedTsNs: 100},
{Offset: 200, Size: 100, FileId: "ghi", ModifiedTsNs: 200},
{Offset: 0, Size: 100, FileId: "abcf", ModifiedTsNs: 300},
{Offset: 50, Size: 100, FileId: "fhfh", ModifiedTsNs: 400},
{Offset: 100, Size: 100, FileId: "yuyu", ModifiedTsNs: 500},
2018-11-19 01:05:36 +00:00
}
k := 3
for n := 0; n < k; n++ {
chunks = append(chunks, &filer_pb.FileChunk{
Offset: int64(n * 100), Size: 100, FileId: fmt.Sprintf("fileId%d", n), ModifiedTsNs: int64(n),
2018-11-19 01:05:36 +00:00
})
chunks = append(chunks, &filer_pb.FileChunk{
Offset: int64(n * 50), Size: 100, FileId: fmt.Sprintf("fileId%d", n+k), ModifiedTsNs: int64(n + k),
2018-11-19 01:05:36 +00:00
})
}
compacted, garbage := CompactFileChunks(nil, chunks)
2018-11-19 01:05:36 +00:00
2018-11-22 00:35:27 +00:00
if len(compacted) != 4 {
2018-11-19 01:05:36 +00:00
t.Fatalf("unexpected compacted: %d", len(compacted))
}
2018-11-22 00:35:27 +00:00
if len(garbage) != 8 {
2018-11-19 01:05:36 +00:00
t.Fatalf("unexpected garbage: %d", len(garbage))
}
}
2020-08-23 21:09:25 +00:00
func TestRandomFileChunksCompact(t *testing.T) {
data := make([]byte, 1024)
var chunks []*filer_pb.FileChunk
for i := 0; i < 15; i++ {
start, stop := rand.Intn(len(data)), rand.Intn(len(data))
if start > stop {
start, stop = stop, start
}
2020-08-30 05:28:33 +00:00
if start+16 < stop {
2020-08-23 21:09:25 +00:00
stop = start + 16
}
chunk := &filer_pb.FileChunk{
FileId: strconv.Itoa(i),
Offset: int64(start),
Size: uint64(stop - start),
ModifiedTsNs: int64(i),
Fid: &filer_pb.FileId{FileKey: uint64(i)},
2020-08-23 21:09:25 +00:00
}
chunks = append(chunks, chunk)
for x := start; x < stop; x++ {
data[x] = byte(i)
}
}
visibles, _ := NonOverlappingVisibleIntervals(nil, chunks, 0, math.MaxInt64)
2020-08-23 21:09:25 +00:00
for _, v := range visibles {
for x := v.start; x < v.stop; x++ {
assert.Equal(t, strconv.Itoa(int(data[x])), v.fileId)
}
}
}
2018-05-21 00:06:09 +00:00
func TestIntervalMerging(t *testing.T) {
testcases := []struct {
Chunks []*filer_pb.FileChunk
Expected []*VisibleInterval
2018-05-21 00:06:09 +00:00
}{
// case 0: normal
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "abc", ModifiedTsNs: 123},
{Offset: 100, Size: 100, FileId: "asdf", ModifiedTsNs: 134},
{Offset: 200, Size: 100, FileId: "fsad", ModifiedTsNs: 353},
2018-05-21 00:06:09 +00:00
},
Expected: []*VisibleInterval{
2018-05-21 00:06:09 +00:00
{start: 0, stop: 100, fileId: "abc"},
{start: 100, stop: 200, fileId: "asdf"},
{start: 200, stop: 300, fileId: "fsad"},
},
},
// case 1: updates overwrite full chunks
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "abc", ModifiedTsNs: 123},
{Offset: 0, Size: 200, FileId: "asdf", ModifiedTsNs: 134},
2018-05-21 00:06:09 +00:00
},
Expected: []*VisibleInterval{
2018-05-21 00:06:09 +00:00
{start: 0, stop: 200, fileId: "asdf"},
},
},
// case 2: updates overwrite part of previous chunks
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "a", ModifiedTsNs: 123},
{Offset: 0, Size: 70, FileId: "b", ModifiedTsNs: 134},
2018-05-21 00:06:09 +00:00
},
Expected: []*VisibleInterval{
2020-08-16 22:16:46 +00:00
{start: 0, stop: 70, fileId: "b"},
{start: 70, stop: 100, fileId: "a", chunkOffset: 70},
2018-05-21 00:06:09 +00:00
},
},
// case 3: updates overwrite full chunks
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "abc", ModifiedTsNs: 123},
{Offset: 0, Size: 200, FileId: "asdf", ModifiedTsNs: 134},
{Offset: 50, Size: 250, FileId: "xxxx", ModifiedTsNs: 154},
2018-05-21 00:06:09 +00:00
},
Expected: []*VisibleInterval{
2018-05-21 00:06:09 +00:00
{start: 0, stop: 50, fileId: "asdf"},
{start: 50, stop: 300, fileId: "xxxx"},
},
},
// case 4: updates far away from prev chunks
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "abc", ModifiedTsNs: 123},
{Offset: 0, Size: 200, FileId: "asdf", ModifiedTsNs: 134},
{Offset: 250, Size: 250, FileId: "xxxx", ModifiedTsNs: 154},
2018-05-21 00:06:09 +00:00
},
Expected: []*VisibleInterval{
2018-05-21 00:06:09 +00:00
{start: 0, stop: 200, fileId: "asdf"},
{start: 250, stop: 500, fileId: "xxxx"},
},
},
// case 5: updates overwrite full chunks
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "a", ModifiedTsNs: 123},
{Offset: 0, Size: 200, FileId: "d", ModifiedTsNs: 184},
{Offset: 70, Size: 150, FileId: "c", ModifiedTsNs: 143},
{Offset: 80, Size: 100, FileId: "b", ModifiedTsNs: 134},
2018-05-21 00:06:09 +00:00
},
Expected: []*VisibleInterval{
2020-08-16 22:16:46 +00:00
{start: 0, stop: 200, fileId: "d"},
{start: 200, stop: 220, fileId: "c", chunkOffset: 130},
2018-05-21 00:06:09 +00:00
},
},
// case 6: same updates
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "abc", Fid: &filer_pb.FileId{FileKey: 1}, ModifiedTsNs: 123},
{Offset: 0, Size: 100, FileId: "axf", Fid: &filer_pb.FileId{FileKey: 2}, ModifiedTsNs: 123},
{Offset: 0, Size: 100, FileId: "xyz", Fid: &filer_pb.FileId{FileKey: 3}, ModifiedTsNs: 123},
},
Expected: []*VisibleInterval{
2020-08-23 21:09:25 +00:00
{start: 0, stop: 100, fileId: "xyz"},
},
},
2018-05-28 21:32:16 +00:00
// case 7: real updates
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 2097152, FileId: "7,0294cbb9892b", ModifiedTsNs: 123},
{Offset: 0, Size: 3145728, FileId: "3,029565bf3092", ModifiedTsNs: 130},
{Offset: 2097152, Size: 3145728, FileId: "6,029632f47ae2", ModifiedTsNs: 140},
{Offset: 5242880, Size: 3145728, FileId: "2,029734c5aa10", ModifiedTsNs: 150},
{Offset: 8388608, Size: 3145728, FileId: "5,02982f80de50", ModifiedTsNs: 160},
{Offset: 11534336, Size: 2842193, FileId: "7,0299ad723803", ModifiedTsNs: 170},
2018-05-28 21:32:16 +00:00
},
Expected: []*VisibleInterval{
2018-05-28 21:32:16 +00:00
{start: 0, stop: 2097152, fileId: "3,029565bf3092"},
{start: 2097152, stop: 5242880, fileId: "6,029632f47ae2"},
{start: 5242880, stop: 8388608, fileId: "2,029734c5aa10"},
{start: 8388608, stop: 11534336, fileId: "5,02982f80de50"},
{start: 11534336, stop: 14376529, fileId: "7,0299ad723803"},
},
},
// case 8: real bug
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 77824, FileId: "4,0b3df938e301", ModifiedTsNs: 123},
{Offset: 471040, Size: 472225 - 471040, FileId: "6,0b3e0650019c", ModifiedTsNs: 130},
{Offset: 77824, Size: 208896 - 77824, FileId: "4,0b3f0c7202f0", ModifiedTsNs: 140},
{Offset: 208896, Size: 339968 - 208896, FileId: "2,0b4031a72689", ModifiedTsNs: 150},
{Offset: 339968, Size: 471040 - 339968, FileId: "3,0b416a557362", ModifiedTsNs: 160},
},
Expected: []*VisibleInterval{
{start: 0, stop: 77824, fileId: "4,0b3df938e301"},
{start: 77824, stop: 208896, fileId: "4,0b3f0c7202f0"},
{start: 208896, stop: 339968, fileId: "2,0b4031a72689"},
{start: 339968, stop: 471040, fileId: "3,0b416a557362"},
{start: 471040, stop: 472225, fileId: "6,0b3e0650019c"},
},
},
2018-05-21 00:06:09 +00:00
}
for i, testcase := range testcases {
log.Printf("++++++++++ merged test case %d ++++++++++++++++++++", i)
intervals, _ := NonOverlappingVisibleIntervals(nil, testcase.Chunks, 0, math.MaxInt64)
2018-05-21 00:06:09 +00:00
for x, interval := range intervals {
log.Printf("test case %d, interval %d, start=%d, stop=%d, fileId=%s",
i, x, interval.start, interval.stop, interval.fileId)
2018-05-28 21:32:16 +00:00
}
for x, interval := range intervals {
2018-05-21 00:06:09 +00:00
if interval.start != testcase.Expected[x].start {
t.Fatalf("failed on test case %d, interval %d, start %d, expect %d",
i, x, interval.start, testcase.Expected[x].start)
}
if interval.stop != testcase.Expected[x].stop {
t.Fatalf("failed on test case %d, interval %d, stop %d, expect %d",
i, x, interval.stop, testcase.Expected[x].stop)
}
if interval.fileId != testcase.Expected[x].fileId {
t.Fatalf("failed on test case %d, interval %d, chunkId %s, expect %s",
i, x, interval.fileId, testcase.Expected[x].fileId)
}
2020-08-16 22:16:46 +00:00
if interval.chunkOffset != testcase.Expected[x].chunkOffset {
t.Fatalf("failed on test case %d, interval %d, chunkOffset %d, expect %d",
i, x, interval.chunkOffset, testcase.Expected[x].chunkOffset)
}
2018-05-21 00:06:09 +00:00
}
if len(intervals) != len(testcase.Expected) {
t.Fatalf("failed to compact test case %d, len %d expected %d", i, len(intervals), len(testcase.Expected))
}
2018-11-18 19:51:38 +00:00
2018-05-21 00:06:09 +00:00
}
}
func TestChunksReading(t *testing.T) {
testcases := []struct {
Chunks []*filer_pb.FileChunk
Offset int64
2020-03-22 08:37:46 +00:00
Size int64
Expected []*ChunkView
}{
// case 0: normal
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "abc", ModifiedTsNs: 123},
{Offset: 100, Size: 100, FileId: "asdf", ModifiedTsNs: 134},
{Offset: 200, Size: 100, FileId: "fsad", ModifiedTsNs: 353},
},
Offset: 0,
Size: 250,
Expected: []*ChunkView{
2018-05-27 18:52:26 +00:00
{Offset: 0, Size: 100, FileId: "abc", LogicOffset: 0},
{Offset: 0, Size: 100, FileId: "asdf", LogicOffset: 100},
{Offset: 0, Size: 50, FileId: "fsad", LogicOffset: 200},
},
},
// case 1: updates overwrite full chunks
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "abc", ModifiedTsNs: 123},
{Offset: 0, Size: 200, FileId: "asdf", ModifiedTsNs: 134},
},
Offset: 50,
Size: 100,
Expected: []*ChunkView{
2018-05-27 18:52:26 +00:00
{Offset: 50, Size: 100, FileId: "asdf", LogicOffset: 50},
},
},
// case 2: updates overwrite part of previous chunks
{
Chunks: []*filer_pb.FileChunk{
{Offset: 3, Size: 100, FileId: "a", ModifiedTsNs: 123},
{Offset: 10, Size: 50, FileId: "b", ModifiedTsNs: 134},
},
2020-08-16 22:16:46 +00:00
Offset: 30,
Size: 40,
Expected: []*ChunkView{
2020-08-16 22:16:46 +00:00
{Offset: 20, Size: 30, FileId: "b", LogicOffset: 30},
{Offset: 57, Size: 10, FileId: "a", LogicOffset: 60},
},
},
// case 3: updates overwrite full chunks
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "abc", ModifiedTsNs: 123},
{Offset: 0, Size: 200, FileId: "asdf", ModifiedTsNs: 134},
{Offset: 50, Size: 250, FileId: "xxxx", ModifiedTsNs: 154},
},
Offset: 0,
Size: 200,
Expected: []*ChunkView{
2018-05-27 18:52:26 +00:00
{Offset: 0, Size: 50, FileId: "asdf", LogicOffset: 0},
{Offset: 0, Size: 150, FileId: "xxxx", LogicOffset: 50},
},
},
// case 4: updates far away from prev chunks
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "abc", ModifiedTsNs: 123},
{Offset: 0, Size: 200, FileId: "asdf", ModifiedTsNs: 134},
{Offset: 250, Size: 250, FileId: "xxxx", ModifiedTsNs: 154},
},
Offset: 0,
Size: 400,
Expected: []*ChunkView{
2018-05-27 18:52:26 +00:00
{Offset: 0, Size: 200, FileId: "asdf", LogicOffset: 0},
2020-08-16 08:35:52 +00:00
{Offset: 0, Size: 150, FileId: "xxxx", LogicOffset: 250},
},
},
// case 5: updates overwrite full chunks
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "a", ModifiedTsNs: 123},
{Offset: 0, Size: 200, FileId: "c", ModifiedTsNs: 184},
{Offset: 70, Size: 150, FileId: "b", ModifiedTsNs: 143},
{Offset: 80, Size: 100, FileId: "xxxx", ModifiedTsNs: 134},
},
Offset: 0,
Size: 220,
Expected: []*ChunkView{
2020-08-16 22:16:46 +00:00
{Offset: 0, Size: 200, FileId: "c", LogicOffset: 0},
{Offset: 130, Size: 20, FileId: "b", LogicOffset: 200},
},
},
// case 6: same updates
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "abc", Fid: &filer_pb.FileId{FileKey: 1}, ModifiedTsNs: 123},
{Offset: 0, Size: 100, FileId: "def", Fid: &filer_pb.FileId{FileKey: 2}, ModifiedTsNs: 123},
{Offset: 0, Size: 100, FileId: "xyz", Fid: &filer_pb.FileId{FileKey: 3}, ModifiedTsNs: 123},
},
Offset: 0,
Size: 100,
Expected: []*ChunkView{
2020-08-23 23:12:34 +00:00
{Offset: 0, Size: 100, FileId: "xyz", LogicOffset: 0},
},
},
2018-05-25 06:19:56 +00:00
// case 7: edge cases
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "abc", ModifiedTsNs: 123},
{Offset: 100, Size: 100, FileId: "asdf", ModifiedTsNs: 134},
{Offset: 200, Size: 100, FileId: "fsad", ModifiedTsNs: 353},
2018-05-25 06:19:56 +00:00
},
Offset: 0,
Size: 200,
Expected: []*ChunkView{
2018-05-27 18:52:26 +00:00
{Offset: 0, Size: 100, FileId: "abc", LogicOffset: 0},
{Offset: 0, Size: 100, FileId: "asdf", LogicOffset: 100},
2018-05-25 06:19:56 +00:00
},
},
2020-01-26 20:47:23 +00:00
// case 8: edge cases
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 100, FileId: "abc", ModifiedTsNs: 123},
{Offset: 90, Size: 200, FileId: "asdf", ModifiedTsNs: 134},
{Offset: 190, Size: 300, FileId: "fsad", ModifiedTsNs: 353},
2020-01-26 20:47:23 +00:00
},
Offset: 0,
Size: 300,
Expected: []*ChunkView{
{Offset: 0, Size: 90, FileId: "abc", LogicOffset: 0},
{Offset: 0, Size: 100, FileId: "asdf", LogicOffset: 90},
{Offset: 0, Size: 110, FileId: "fsad", LogicOffset: 190},
},
},
// case 9: edge cases
{
Chunks: []*filer_pb.FileChunk{
{Offset: 0, Size: 43175947, FileId: "2,111fc2cbfac1", ModifiedTsNs: 1},
{Offset: 43175936, Size: 52981771 - 43175936, FileId: "2,112a36ea7f85", ModifiedTsNs: 2},
{Offset: 52981760, Size: 72564747 - 52981760, FileId: "4,112d5f31c5e7", ModifiedTsNs: 3},
{Offset: 72564736, Size: 133255179 - 72564736, FileId: "1,113245f0cdb6", ModifiedTsNs: 4},
{Offset: 133255168, Size: 137269259 - 133255168, FileId: "3,1141a70733b5", ModifiedTsNs: 5},
{Offset: 137269248, Size: 153578836 - 137269248, FileId: "1,114201d5bbdb", ModifiedTsNs: 6},
2020-01-26 20:47:23 +00:00
},
Offset: 0,
Size: 153578836,
Expected: []*ChunkView{
{Offset: 0, Size: 43175936, FileId: "2,111fc2cbfac1", LogicOffset: 0},
{Offset: 0, Size: 52981760 - 43175936, FileId: "2,112a36ea7f85", LogicOffset: 43175936},
{Offset: 0, Size: 72564736 - 52981760, FileId: "4,112d5f31c5e7", LogicOffset: 52981760},
{Offset: 0, Size: 133255168 - 72564736, FileId: "1,113245f0cdb6", LogicOffset: 72564736},
{Offset: 0, Size: 137269248 - 133255168, FileId: "3,1141a70733b5", LogicOffset: 133255168},
{Offset: 0, Size: 153578836 - 137269248, FileId: "1,114201d5bbdb", LogicOffset: 137269248},
2020-01-26 20:47:23 +00:00
},
},
}
for i, testcase := range testcases {
2020-08-16 22:16:46 +00:00
if i != 2 {
// continue
}
log.Printf("++++++++++ read test case %d ++++++++++++++++++++", i)
chunks := ViewFromChunks(nil, testcase.Chunks, testcase.Offset, testcase.Size)
for x, chunk := range chunks {
log.Printf("read case %d, chunk %d, offset=%d, size=%d, fileId=%s",
i, x, chunk.Offset, chunk.Size, chunk.FileId)
if chunk.Offset != testcase.Expected[x].Offset {
2020-08-16 22:16:46 +00:00
t.Fatalf("failed on read case %d, chunk %s, Offset %d, expect %d",
i, chunk.FileId, chunk.Offset, testcase.Expected[x].Offset)
}
if chunk.Size != testcase.Expected[x].Size {
2020-08-16 22:16:46 +00:00
t.Fatalf("failed on read case %d, chunk %s, Size %d, expect %d",
i, chunk.FileId, chunk.Size, testcase.Expected[x].Size)
}
if chunk.FileId != testcase.Expected[x].FileId {
t.Fatalf("failed on read case %d, chunk %d, FileId %s, expect %s",
i, x, chunk.FileId, testcase.Expected[x].FileId)
}
if chunk.LogicOffset != testcase.Expected[x].LogicOffset {
t.Fatalf("failed on read case %d, chunk %d, LogicOffset %d, expect %d",
i, x, chunk.LogicOffset, testcase.Expected[x].LogicOffset)
}
}
if len(chunks) != len(testcase.Expected) {
t.Fatalf("failed to read test case %d, len %d expected %d", i, len(chunks), len(testcase.Expected))
}
}
}
2018-11-19 01:05:36 +00:00
func BenchmarkCompactFileChunks(b *testing.B) {
2018-11-19 01:05:36 +00:00
var chunks []*filer_pb.FileChunk
k := 1024
for n := 0; n < k; n++ {
chunks = append(chunks, &filer_pb.FileChunk{
Offset: int64(n * 100), Size: 100, FileId: fmt.Sprintf("fileId%d", n), ModifiedTsNs: int64(n),
})
chunks = append(chunks, &filer_pb.FileChunk{
Offset: int64(n * 50), Size: 100, FileId: fmt.Sprintf("fileId%d", n+k), ModifiedTsNs: int64(n + k),
})
}
for n := 0; n < b.N; n++ {
CompactFileChunks(nil, chunks)
}
}
2020-08-16 07:49:26 +00:00
func TestViewFromVisibleIntervals(t *testing.T) {
visibles := []VisibleInterval{
{
2020-08-16 22:16:46 +00:00
start: 0,
stop: 25,
2020-08-16 07:49:26 +00:00
fileId: "fid1",
},
{
2020-08-16 22:16:46 +00:00
start: 4096,
stop: 8192,
2020-08-16 07:49:26 +00:00
fileId: "fid2",
},
{
2020-08-16 22:16:46 +00:00
start: 16384,
stop: 18551,
2020-08-16 07:49:26 +00:00
fileId: "fid3",
},
}
views := ViewFromVisibleIntervals(visibles, 0, math.MaxInt32)
if len(views) != len(visibles) {
assert.Equal(t, len(visibles), len(views), "ViewFromVisibleIntervals error")
}
2020-08-16 22:16:46 +00:00
}
func TestViewFromVisibleIntervals2(t *testing.T) {
visibles := []VisibleInterval{
{
start: 344064,
stop: 348160,
fileId: "fid1",
},
{
start: 348160,
stop: 356352,
fileId: "fid2",
},
}
views := ViewFromVisibleIntervals(visibles, 0, math.MaxInt32)
if len(views) != len(visibles) {
assert.Equal(t, len(visibles), len(views), "ViewFromVisibleIntervals error")
}
}
func TestViewFromVisibleIntervals3(t *testing.T) {
visibles := []VisibleInterval{
{
start: 1000,
stop: 2000,
fileId: "fid1",
},
{
start: 3000,
stop: 4000,
fileId: "fid2",
},
}
views := ViewFromVisibleIntervals(visibles, 1700, 1500)
if len(views) != len(visibles) {
assert.Equal(t, len(visibles), len(views), "ViewFromVisibleIntervals error")
}
}