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package slice_test
import (
"testing"
"github.com/n-peugnet/dna-backup/slice"
"github.com/n-peugnet/dna-backup/testutils"
)
func TestPatch(t *testing.T) {
source := slice.Slice{1, 2, 3, 4}
target := slice.Slice{2, 5, 3, 6, 4, 7, 8}
patch := slice.Diff(source, target)
testutils.AssertSame(t, []slice.Del{0}, patch.Del, "Patch del part")
testutils.AssertSame(t, []slice.Ins{
{1, slice.Slice{5}},
{3, slice.Slice{6}},
{5, slice.Slice{7, 8}},
}, patch.Ins, "Patch ins part")
actual := slice.Patch(source, patch)
testutils.AssertSame(t, target, actual, "Target obtained from patch application")
}
func TestEmptyPatch(t *testing.T) {
source := slice.Slice{1, 2, 3, 4}
target := slice.Slice{1, 2, 3, 4}
patch := slice.Diff(source, target)
testutils.AssertSame(t, *new([]slice.Del), patch.Del, "Patch del part")
testutils.AssertSame(t, *new([]slice.Ins), patch.Ins, "Patch ins part")
actual := slice.Patch(source, patch)
testutils.AssertSame(t, target, actual, "Target obtained from patch application")
}
type i struct {
int
}
func TestStruct(t *testing.T) {
c1, c2, c3, c4, c5, c6, c7, c8 := &i{1}, &i{2}, &i{3}, &i{4}, &i{5}, &i{6}, &i{7}, &i{8}
source := slice.Slice{c1, c2, c3, c4}
target := slice.Slice{&i{5}, c2, c5, c6, &i{4}, c7, &i{8}}
patch := slice.Diff(source, target)
testutils.AssertSame(t, []slice.Del{0, 2}, patch.Del, "Patch del part")
testutils.AssertSame(t, []slice.Ins{
{0, slice.Slice{c5}},
{2, slice.Slice{c5, c6}},
{5, slice.Slice{c7, c8}},
}, patch.Ins, "Patch ins part")
actual := slice.Patch(source, patch)
testutils.AssertSame(t, target, actual, "Target obtained from patch application")
}
func TestDeltaString(t *testing.T) {
delta := slice.Delta{
Del: []slice.Del{0, 3, 4},
Ins: []slice.Ins{
{2, slice.Slice{6, 7, 8}},
{5, slice.Slice{5}},
},
}
testutils.AssertSame(
t,
"{Del: [0 3 4] Ins: [{idx:2 count:3} {idx:5 count:1}]}",
delta.String(),
"Delta string representation",
)
}
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