From f52712e90b253238b1f126bfc994b4e3419cfe11 Mon Sep 17 00:00:00 2001
From: Xiaoxuan Wang <wangxiaoxuan119@gmail.com>
Date: Mon, 25 Sep 2023 07:09:58 +0000
Subject: [PATCH] added an ASCII drawing

Signed-off-by: Xiaoxuan Wang <wangxiaoxuan119@gmail.com>
---
 internal/graph/deletablememory_test.go | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/internal/graph/deletablememory_test.go b/internal/graph/deletablememory_test.go
index af14319c..5587174d 100644
--- a/internal/graph/deletablememory_test.go
+++ b/internal/graph/deletablememory_test.go
@@ -185,6 +185,22 @@ func TestDeletableMemory_IndexAndRemove(t *testing.T) {
 	}
 }
 
+/*
++---------A(index)--------+
+|             |           |
+|             |           |
+|             |           |
+|             |           |
+v             v           v
+B(manifest)   C(manifest) D(manifest)
+|             |           |
+|             |           |
+|             |           |
+|             |           |
+|             |           |
+|             |           v
++-->E(layer)<-+------->F(layer)
+*/
 func TestDeletableMemory_IndexAllAndPredecessors(t *testing.T) {
 	testFetcher := cas.NewMemory()
 	testDeletableMemory := NewDeletableMemory()