add patch and diff logic for recipes

1 files changed, 24 insertions, 0 deletions

diff --git a/recipe_test.go b/recipe_test.go
new file mode 100644
index 0000000..f5c9b29
--- /dev/null
+++ b/recipe_test.go
@@ -0,0 +1,24 @@
+package main
+
+import "testing"
+
+func TestRecipe(t *testing.T) {
+	c1 := &StoredChunk{Id: &ChunkId{0, 1}}
+	c2 := &StoredChunk{Id: &ChunkId{0, 2}}
+	c3 := &StoredChunk{Id: &ChunkId{0, 3}}
+	c4 := &StoredChunk{Id: &ChunkId{0, 4}}
+	c5 := &StoredChunk{Id: &ChunkId{0, 5}}
+	c6 := &StoredChunk{Id: &ChunkId{0, 6}}
+	c7 := &StoredChunk{Id: &ChunkId{0, 7}}
+	source := Recipe{c1, c2, c3, c4}
+	target := Recipe{c2, c5, c3, c6, c4, c7}
+	patch := diffRecipe(source, target)
+	assertSame(t, []RecipeDel{0}, patch.Del, "Patch del part")
+	assertSame(t, []RecipeIns{
+		{1, []Chunk{c5}},
+		{3, []Chunk{c6}},
+		{5, []Chunk{c7}},
+	}, patch.Ins, "Patch ins part")
+	actual := patchRecipe(source, patch)
+	assertSame(t, target, actual, "Target obtained from patch application")
+}