go-ceph/internal/callbacks/callbacks_test.go

111 lines
2.2 KiB
Go

package callbacks
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestCallbacks(t *testing.T) {
cbks := New()
assert.Len(t, cbks.cmap, 0)
i1 := cbks.Add("foo")
i2 := cbks.Add("bar")
i3 := cbks.Add("baz")
assert.Len(t, cbks.cmap, 3)
var x interface{}
x = cbks.Lookup(i1)
assert.NotNil(t, x)
if s, ok := x.(string); ok {
assert.EqualValues(t, s, "foo")
}
x = cbks.Lookup(5555)
assert.Nil(t, x)
x = cbks.Lookup(i3)
assert.NotNil(t, x)
if s, ok := x.(string); ok {
assert.EqualValues(t, s, "baz")
}
cbks.Remove(i3)
x = cbks.Lookup(i3)
assert.Nil(t, x)
cbks.Remove(i2)
x = cbks.Lookup(i2)
assert.Nil(t, x)
cbks.Remove(i1)
assert.Len(t, cbks.cmap, 0)
}
func TestCallbacksIndexing(t *testing.T) {
cbks := New()
assert.Len(t, cbks.cmap, 0)
i1 := cbks.Add("foo")
i2 := cbks.Add("bar")
_ = cbks.Add("baz")
_ = cbks.Add("wibble")
_ = cbks.Add("wabble")
assert.Len(t, cbks.cmap, 5)
// generally we assume that the callback data will be mostly LIFO
// but can't guarantee it. Thus we check that when we remove the
// first items inserted into the map there are no subsequent issues
cbks.Remove(i1)
cbks.Remove(i2)
_ = cbks.Add("flim")
ilast := cbks.Add("flam")
assert.Len(t, cbks.cmap, 5)
x := cbks.Lookup(ilast)
assert.NotNil(t, x)
if s, ok := x.(string); ok {
assert.EqualValues(t, s, "flam")
}
}
func TestCallbacksData(t *testing.T) {
cbks := New()
assert.Len(t, cbks.cmap, 0)
// insert a plain function
i1 := cbks.Add(func(v int) int { return v + 1 })
// insert a type "containing" a function, note that it doesn't
// actually have a callable function. Users of the type must
// check that themselves
type flup struct {
Stuff int
Junk func(int, int) error
}
i2 := cbks.Add(flup{
Stuff: 55,
})
// did we get a function back
x1 := cbks.Lookup(i1)
if assert.NotNil(t, x1) {
if f, ok := x1.(func(v int) int); ok {
assert.Equal(t, 2, f(1))
} else {
t.Fatalf("conversion failed")
}
}
// did we get our data structure back
x2 := cbks.Lookup(i2)
if assert.NotNil(t, x2) {
if d, ok := x2.(flup); ok {
assert.Equal(t, 55, d.Stuff)
assert.Nil(t, d.Junk)
} else {
t.Fatalf("conversion failed")
}
}
}