279 lines
6.7 KiB
Go
279 lines
6.7 KiB
Go
package sync
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import (
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"container/heap"
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"context"
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"sync"
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"sync/atomic"
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"testing"
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"github.com/rclone/rclone/fs"
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"github.com/rclone/rclone/fstest/mockobject"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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// Check interface satisfied
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var _ heap.Interface = (*pipe)(nil)
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func TestPipe(t *testing.T) {
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var queueLength int
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var queueSize int64
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stats := func(n int, size int64) {
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queueLength, queueSize = n, size
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}
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// Make a new pipe
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p, err := newPipe("", stats, 10)
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require.NoError(t, err)
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checkStats := func(expectedN int, expectedSize int64) {
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n, size := p.Stats()
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assert.Equal(t, expectedN, n)
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assert.Equal(t, expectedSize, size)
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assert.Equal(t, expectedN, queueLength)
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assert.Equal(t, expectedSize, queueSize)
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}
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checkStats(0, 0)
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ctx := context.Background()
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obj1 := mockobject.New("potato").WithContent([]byte("hello"), mockobject.SeekModeNone)
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pair1 := fs.ObjectPair{Src: obj1, Dst: nil}
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// Put an object
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ok := p.Put(ctx, pair1)
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assert.Equal(t, true, ok)
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checkStats(1, 5)
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// Close the pipe showing reading on closed pipe is OK
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p.Close()
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// Read from pipe
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pair2, ok := p.Get(ctx)
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assert.Equal(t, pair1, pair2)
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assert.Equal(t, true, ok)
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checkStats(0, 0)
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// Check read on closed pipe
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pair2, ok = p.Get(ctx)
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assert.Equal(t, fs.ObjectPair{}, pair2)
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assert.Equal(t, false, ok)
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// Check panic on write to closed pipe
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assert.Panics(t, func() { p.Put(ctx, pair1) })
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// Make a new pipe
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p, err = newPipe("", stats, 10)
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require.NoError(t, err)
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ctx2, cancel := context.WithCancel(ctx)
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// cancel it in the background - check read ceases
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go cancel()
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pair2, ok = p.Get(ctx2)
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assert.Equal(t, fs.ObjectPair{}, pair2)
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assert.Equal(t, false, ok)
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// check we can't write
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ok = p.Put(ctx2, pair1)
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assert.Equal(t, false, ok)
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}
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// TestPipeConcurrent runs concurrent Get and Put to flush out any
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// race conditions and concurrency problems.
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func TestPipeConcurrent(t *testing.T) {
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const (
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N = 1000
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readWriters = 10
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)
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stats := func(n int, size int64) {}
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// Make a new pipe
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p, err := newPipe("", stats, 10)
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require.NoError(t, err)
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var wg sync.WaitGroup
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obj1 := mockobject.New("potato").WithContent([]byte("hello"), mockobject.SeekModeNone)
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pair1 := fs.ObjectPair{Src: obj1, Dst: nil}
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ctx := context.Background()
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var count int64
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for j := 0; j < readWriters; j++ {
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wg.Add(2)
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go func() {
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defer wg.Done()
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for i := 0; i < N; i++ {
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// Read from pipe
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pair2, ok := p.Get(ctx)
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assert.Equal(t, pair1, pair2)
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assert.Equal(t, true, ok)
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atomic.AddInt64(&count, -1)
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}
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}()
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go func() {
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defer wg.Done()
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for i := 0; i < N; i++ {
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// Put an object
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ok := p.Put(ctx, pair1)
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assert.Equal(t, true, ok)
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atomic.AddInt64(&count, 1)
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}
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}()
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}
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wg.Wait()
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assert.Equal(t, int64(0), count)
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}
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func TestPipeOrderBy(t *testing.T) {
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var (
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stats = func(n int, size int64) {}
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ctx = context.Background()
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obj1 = mockobject.New("b").WithContent([]byte("1"), mockobject.SeekModeNone)
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obj2 = mockobject.New("a").WithContent([]byte("22"), mockobject.SeekModeNone)
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pair1 = fs.ObjectPair{Src: obj1}
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pair2 = fs.ObjectPair{Src: obj2}
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)
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for _, test := range []struct {
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orderBy string
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swapped1 bool
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swapped2 bool
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fraction int
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}{
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{"", false, true, -1},
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{"size", false, false, -1},
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{"name", true, true, -1},
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{"modtime", false, true, -1},
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{"size,ascending", false, false, -1},
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{"name,asc", true, true, -1},
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{"modtime,ascending", false, true, -1},
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{"size,descending", true, true, -1},
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{"name,desc", false, false, -1},
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{"modtime,descending", true, false, -1},
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{"size,mixed,50", false, false, 25},
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{"size,mixed,51", true, true, 75},
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} {
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t.Run(test.orderBy, func(t *testing.T) {
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p, err := newPipe(test.orderBy, stats, 10)
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require.NoError(t, err)
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readAndCheck := func(swapped bool) {
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var readFirst, readSecond fs.ObjectPair
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var ok1, ok2 bool
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if test.fraction < 0 {
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readFirst, ok1 = p.Get(ctx)
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readSecond, ok2 = p.Get(ctx)
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} else {
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readFirst, ok1 = p.GetMax(ctx, test.fraction)
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readSecond, ok2 = p.GetMax(ctx, test.fraction)
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}
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assert.True(t, ok1)
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assert.True(t, ok2)
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if swapped {
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assert.True(t, readFirst == pair2 && readSecond == pair1)
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} else {
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assert.True(t, readFirst == pair1 && readSecond == pair2)
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}
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}
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ok := p.Put(ctx, pair1)
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assert.True(t, ok)
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ok = p.Put(ctx, pair2)
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assert.True(t, ok)
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readAndCheck(test.swapped1)
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// insert other way round
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ok = p.Put(ctx, pair2)
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assert.True(t, ok)
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ok = p.Put(ctx, pair1)
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assert.True(t, ok)
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readAndCheck(test.swapped2)
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})
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}
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}
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func TestNewLess(t *testing.T) {
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t.Run("blankOK", func(t *testing.T) {
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less, _, err := newLess("")
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require.NoError(t, err)
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assert.Nil(t, less)
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})
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t.Run("tooManyParts", func(t *testing.T) {
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_, _, err := newLess("size,asc,toomanyparts")
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require.Error(t, err)
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assert.Contains(t, err.Error(), "bad --order-by string")
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})
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t.Run("tooManyParts2", func(t *testing.T) {
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_, _, err := newLess("size,mixed,50,toomanyparts")
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require.Error(t, err)
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assert.Contains(t, err.Error(), "bad --order-by string")
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})
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t.Run("badMixed", func(t *testing.T) {
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_, _, err := newLess("size,mixed,32.7")
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require.Error(t, err)
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assert.Contains(t, err.Error(), "bad mixed fraction")
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})
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t.Run("unknownComparison", func(t *testing.T) {
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_, _, err := newLess("potato")
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require.Error(t, err)
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assert.Contains(t, err.Error(), "unknown --order-by comparison")
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})
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t.Run("unknownSortDirection", func(t *testing.T) {
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_, _, err := newLess("name,sideways")
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require.Error(t, err)
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assert.Contains(t, err.Error(), "unknown --order-by sort direction")
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})
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var (
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obj1 = mockobject.New("b").WithContent([]byte("1"), mockobject.SeekModeNone)
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obj2 = mockobject.New("a").WithContent([]byte("22"), mockobject.SeekModeNone)
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pair1 = fs.ObjectPair{Src: obj1}
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pair2 = fs.ObjectPair{Src: obj2}
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)
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for _, test := range []struct {
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orderBy string
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pair1LessPair2 bool
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pair2LessPair1 bool
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wantFraction int
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}{
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{"size", true, false, -1},
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{"name", false, true, -1},
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{"modtime", false, false, -1},
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{"size,ascending", true, false, -1},
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{"name,asc", false, true, -1},
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{"modtime,ascending", false, false, -1},
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{"size,descending", false, true, -1},
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{"name,desc", true, false, -1},
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{"modtime,descending", true, true, -1},
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{"modtime,mixed", false, false, 50},
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{"modtime,mixed,30", false, false, 30},
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} {
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t.Run(test.orderBy, func(t *testing.T) {
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less, gotFraction, err := newLess(test.orderBy)
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assert.Equal(t, test.wantFraction, gotFraction)
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require.NoError(t, err)
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require.NotNil(t, less)
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pair1LessPair2 := less(pair1, pair2)
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assert.Equal(t, test.pair1LessPair2, pair1LessPair2)
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pair2LessPair1 := less(pair2, pair1)
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assert.Equal(t, test.pair2LessPair1, pair2LessPair1)
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})
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}
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}
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