func TestSpaceAllocate(t *testing.T) {
const (
testAddr1 = "10.0.3.4"
testAddr2 = "10.0.3.5"
testAddrx = "10.0.3.19"
testAddry = "10.0.9.19"
containerID = "deadbeef"
size = 20
)
var (
start = ip(testAddr1)
)
space1 := makeSpace(start, size)
require.Equal(t, address.Offset(20), space1.NumFreeAddresses())
space1.assertInvariants()
_, addr1 := space1.Allocate(address.NewRange(start, size))
require.Equal(t, testAddr1, addr1.String(), "address")
require.Equal(t, address.Offset(19), space1.NumFreeAddresses())
space1.assertInvariants()
_, addr2 := space1.Allocate(address.NewRange(start, size))
require.False(t, addr2.String() == testAddr1, "address")
require.Equal(t, address.Offset(18), space1.NumFreeAddresses())
require.Equal(t, address.Offset(13), space1.NumFreeAddressesInRange(address.Range{Start: ip(testAddr1), End: ip(testAddrx)}))
require.Equal(t, address.Offset(18), space1.NumFreeAddressesInRange(address.Range{Start: ip(testAddr1), End: ip(testAddry)}))
space1.assertInvariants()
space1.Free(addr2)
space1.assertInvariants()
wt.AssertErrorInterface(t, (*error)(nil), space1.Free(addr2), "double free")
wt.AssertErrorInterface(t, (*error)(nil), space1.Free(ip(testAddrx)), "address not allocated")
wt.AssertErrorInterface(t, (*error)(nil), space1.Free(ip(testAddry)), "wrong out of range")
space1.assertInvariants()
}
func TestLowlevel(t *testing.T) {
a := []address.Address{}
a = add(a, 100, 200)
require.Equal(t, []address.Address{100, 200}, a)
require.True(t, !contains(a, 99), "")
require.True(t, contains(a, 100), "")
require.True(t, contains(a, 199), "")
require.True(t, !contains(a, 200), "")
a = add(a, 700, 800)
require.Equal(t, []address.Address{100, 200, 700, 800}, a)
a = add(a, 300, 400)
require.Equal(t, []address.Address{100, 200, 300, 400, 700, 800}, a)
a = add(a, 400, 500)
require.Equal(t, []address.Address{100, 200, 300, 500, 700, 800}, a)
a = add(a, 600, 700)
require.Equal(t, []address.Address{100, 200, 300, 500, 600, 800}, a)
a = add(a, 500, 600)
require.Equal(t, []address.Address{100, 200, 300, 800}, a)
a = subtract(a, 500, 600)
require.Equal(t, []address.Address{100, 200, 300, 500, 600, 800}, a)
a = subtract(a, 600, 700)
require.Equal(t, []address.Address{100, 200, 300, 500, 700, 800}, a)
a = subtract(a, 400, 500)
require.Equal(t, []address.Address{100, 200, 300, 400, 700, 800}, a)
a = subtract(a, 300, 400)
require.Equal(t, []address.Address{100, 200, 700, 800}, a)
a = subtract(a, 700, 800)
require.Equal(t, []address.Address{100, 200}, a)
a = subtract(a, 100, 200)
require.Equal(t, []address.Address{}, a)
s := New()
require.Equal(t, address.Offset(0), s.NumFreeAddresses())
ok, got := s.Allocate(address.NewRange(0, 1000))
require.False(t, ok, "allocate in empty space should fail")
s.Add(100, 100)
require.Equal(t, address.Offset(100), s.NumFreeAddresses())
ok, got = s.Allocate(address.NewRange(0, 1000))
require.True(t, ok && got == 100, "allocate")
require.Equal(t, address.Offset(99), s.NumFreeAddresses())
require.NoError(t, s.Claim(150))
require.Equal(t, address.Offset(98), s.NumFreeAddresses())
require.NoError(t, s.Free(100))
require.Equal(t, address.Offset(99), s.NumFreeAddresses())
wt.AssertErrorInterface(t, (*error)(nil), s.Free(0), "free not allocated")
wt.AssertErrorInterface(t, (*error)(nil), s.Free(100), "double free")
r, ok := s.Donate(address.NewRange(0, 1000))
require.True(t, ok && r.Start == 125 && r.Size() == 25, "donate")
// test Donate when addresses are scarce
s = New()
r, ok = s.Donate(address.NewRange(0, 1000))
require.True(t, !ok, "donate on empty space should fail")
s.Add(0, 3)
require.NoError(t, s.Claim(0))
require.NoError(t, s.Claim(2))
r, ok = s.Donate(address.NewRange(0, 1000))
require.True(t, ok && r.Start == 1 && r.End == 2, "donate")
r, ok = s.Donate(address.NewRange(0, 1000))
require.True(t, !ok, "donate should fail")
}