change recipe into a generic slice patch/diff package

1 files changed, 21 insertions, 0 deletions

diff --git a/slice/slice_test.go b/slice/slice_test.go
new file mode 100644
index 0000000..b73946e
--- /dev/null
+++ b/slice/slice_test.go
@@ -0,0 +1,21 @@
+package slice
+
+import (
+	"testing"
+
+	"github.com/n-peugnet/dna-backup/testutils"
+)
+
+func TestPatch(t *testing.T) {
+	source := Slice{1, 2, 3, 4}
+	target := Slice{2, 5, 3, 6, 4, 7, 8}
+	patch := DiffSlice(source, target)
+	testutils.AssertSame(t, []SliceDel{0}, patch.Del, "Patch del part")
+	testutils.AssertSame(t, []SliceIns{
+		{1, Slice{5}},
+		{3, Slice{6}},
+		{5, Slice{7, 8}},
+	}, patch.Ins, "Patch ins part")
+	actual := PatchSlice(source, patch)
+	testutils.AssertSame(t, target, actual, "Target obtained from patch application")
+}