Nick Craig-Wood
b6ffdfa8e6
This commit introduced aux.go which unfortunately is illegal on windows.
e006d7c13f vfs: fix crash when multiple mounts or servers share the same VFS
Rename aux_test.go too to keep the pair together.
74 lines
1.4 KiB
Go
74 lines
1.4 KiB
Go
package vfs
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import (
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"fmt"
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"sync"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestAux(t *testing.T) {
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var a aux
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owner1, owner2 := new(int), new(int)
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// Nothing attached yet
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assert.Nil(t, a.Aux(owner1))
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assert.Nil(t, a.Sys())
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// Values attached by different owners are independent even if
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// they have different types
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a.SetAux(owner1, "potato")
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a.SetAux(owner2, 2)
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assert.Equal(t, "potato", a.Aux(owner1))
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assert.Equal(t, 2, a.Aux(owner2))
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// Replace a value
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a.SetAux(owner1, "sausage")
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assert.Equal(t, "sausage", a.Aux(owner1))
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// Remove a value
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a.SetAux(owner1, nil)
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assert.Nil(t, a.Aux(owner1))
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assert.Equal(t, 2, a.Aux(owner2))
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// Sys is independent of the other owners
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assert.Nil(t, a.Sys())
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a.SetSys(42)
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assert.Equal(t, 42, a.Sys())
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assert.Equal(t, 2, a.Aux(owner2))
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// Changing the type of the value stored must not panic
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a.SetSys("42")
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assert.Equal(t, "42", a.Sys())
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// Remove the remaining values
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a.SetSys(nil)
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a.SetAux(owner2, nil)
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assert.Nil(t, a.entries.Load())
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}
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func TestAuxConcurrent(t *testing.T) {
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const (
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owners = 4
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iterations = 100
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)
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var (
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a aux
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wg sync.WaitGroup
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)
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for i := range owners {
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wg.Add(1)
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go func() {
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defer wg.Done()
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owner := &i
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for j := range iterations {
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value := fmt.Sprintf("%d-%d", i, j)
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a.SetAux(owner, value)
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assert.Equal(t, value, a.Aux(owner))
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}
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}()
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}
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wg.Wait()
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}
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