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diff --git a/test/web/pleroma_api/controllers/emoji_file_controller_test.exs b/test/web/pleroma_api/controllers/emoji_file_controller_test.exs
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+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.PleromaAPI.EmojiFileControllerTest do
+  use Pleroma.Web.ConnCase
+
+  import Tesla.Mock
+  import Pleroma.Factory
+
+  @emoji_path Path.join(
+                Pleroma.Config.get!([:instance, :static_dir]),
+                "emoji"
+              )
+  setup do: clear_config([:auth, :enforce_oauth_admin_scope_usage], false)
+
+  setup do: clear_config([:instance, :public], true)
+
+  setup do
+    admin = insert(:user, is_admin: true)
+    token = insert(:oauth_admin_token, user: admin)
+
+    admin_conn =
+      build_conn()
+      |> assign(:user, admin)
+      |> assign(:token, token)
+
+    Pleroma.Emoji.reload()
+    {:ok, %{admin_conn: admin_conn}}
+  end
+
+  describe "POST/PATCH/DELETE /api/pleroma/emoji/packs/files?name=:name" do
+    setup do
+      pack_file = "#{@emoji_path}/test_pack/pack.json"
+      original_content = File.read!(pack_file)
+
+      on_exit(fn ->
+        File.write!(pack_file, original_content)
+      end)
+
+      :ok
+    end
+
+    test "upload zip file with emojies", %{admin_conn: admin_conn} do
+      on_exit(fn ->
+        [
+          "128px/a_trusted_friend-128.png",
+          "auroraborealis.png",
+          "1000px/baby_in_a_box.png",
+          "1000px/bear.png",
+          "128px/bear-128.png"
+        ]
+        |> Enum.each(fn path -> File.rm_rf!("#{@emoji_path}/test_pack/#{path}") end)
+      end)
+
+      resp =
+        admin_conn
+        |> put_req_header("content-type", "multipart/form-data")
+        |> post("/api/pleroma/emoji/packs/files?name=test_pack", %{
+          file: %Plug.Upload{
+            content_type: "application/zip",
+            filename: "emojis.zip",
+            path: Path.absname("test/fixtures/emojis.zip")
+          }
+        })
+        |> json_response_and_validate_schema(200)
+
+      assert resp == %{
+               "a_trusted_friend-128" => "128px/a_trusted_friend-128.png",
+               "auroraborealis" => "auroraborealis.png",
+               "baby_in_a_box" => "1000px/baby_in_a_box.png",
+               "bear" => "1000px/bear.png",
+               "bear-128" => "128px/bear-128.png",
+               "blank" => "blank.png",
+               "blank2" => "blank2.png"
+             }
+
+      Enum.each(Map.values(resp), fn path ->
+        assert File.exists?("#{@emoji_path}/test_pack/#{path}")
+      end)
+    end
+
+    test "create shortcode exists", %{admin_conn: admin_conn} do
+      assert admin_conn
+             |> put_req_header("content-type", "multipart/form-data")
+             |> post("/api/pleroma/emoji/packs/files?name=test_pack", %{
+               shortcode: "blank",
+               filename: "dir/blank.png",
+               file: %Plug.Upload{
+                 filename: "blank.png",
+                 path: "#{@emoji_path}/test_pack/blank.png"
+               }
+             })
+             |> json_response_and_validate_schema(:conflict) == %{
+               "error" => "An emoji with the \"blank\" shortcode already exists"
+             }
+    end
+
+    test "don't rewrite old emoji", %{admin_conn: admin_conn} do
+      on_exit(fn -> File.rm_rf!("#{@emoji_path}/test_pack/dir/") end)
+
+      assert admin_conn
+             |> put_req_header("content-type", "multipart/form-data")
+             |> post("/api/pleroma/emoji/packs/files?name=test_pack", %{
+               shortcode: "blank3",
+               filename: "dir/blank.png",
+               file: %Plug.Upload{
+                 filename: "blank.png",
+                 path: "#{@emoji_path}/test_pack/blank.png"
+               }
+             })
+             |> json_response_and_validate_schema(200) == %{
+               "blank" => "blank.png",
+               "blank2" => "blank2.png",
+               "blank3" => "dir/blank.png"
+             }
+
+      assert File.exists?("#{@emoji_path}/test_pack/dir/blank.png")
+
+      assert admin_conn
+             |> put_req_header("content-type", "multipart/form-data")
+             |> patch("/api/pleroma/emoji/packs/files?name=test_pack", %{
+               shortcode: "blank",
+               new_shortcode: "blank2",
+               new_filename: "dir_2/blank_3.png"
+             })
+             |> json_response_and_validate_schema(:conflict) == %{
+               "error" =>
+                 "New shortcode \"blank2\" is already used. If you want to override emoji use 'force' option"
+             }
+    end
+
+    test "rewrite old emoji with force option", %{admin_conn: admin_conn} do
+      on_exit(fn -> File.rm_rf!("#{@emoji_path}/test_pack/dir_2/") end)
+
+      assert admin_conn
+             |> put_req_header("content-type", "multipart/form-data")
+             |> post("/api/pleroma/emoji/packs/files?name=test_pack", %{
+               shortcode: "blank3",
+               filename: "dir/blank.png",
+               file: %Plug.Upload{
+                 filename: "blank.png",
+                 path: "#{@emoji_path}/test_pack/blank.png"
+               }
+             })
+             |> json_response_and_validate_schema(200) == %{
+               "blank" => "blank.png",
+               "blank2" => "blank2.png",
+               "blank3" => "dir/blank.png"
+             }
+
+      assert File.exists?("#{@emoji_path}/test_pack/dir/blank.png")
+
+      assert admin_conn
+             |> put_req_header("content-type", "multipart/form-data")
+             |> patch("/api/pleroma/emoji/packs/files?name=test_pack", %{
+               shortcode: "blank3",
+               new_shortcode: "blank4",
+               new_filename: "dir_2/blank_3.png",
+               force: true
+             })
+             |> json_response_and_validate_schema(200) == %{
+               "blank" => "blank.png",
+               "blank2" => "blank2.png",
+               "blank4" => "dir_2/blank_3.png"
+             }
+
+      assert File.exists?("#{@emoji_path}/test_pack/dir_2/blank_3.png")
+    end
+
+    test "with empty filename", %{admin_conn: admin_conn} do
+      assert admin_conn
+             |> put_req_header("content-type", "multipart/form-data")
+             |> post("/api/pleroma/emoji/packs/files?name=test_pack", %{
+               shortcode: "blank2",
+               filename: "",
+               file: %Plug.Upload{
+                 filename: "blank.png",
+                 path: "#{@emoji_path}/test_pack/blank.png"
+               }
+             })
+             |> json_response_and_validate_schema(422) == %{
+               "error" => "pack name, shortcode or filename cannot be empty"
+             }
+    end
+
+    test "add file with not loaded pack", %{admin_conn: admin_conn} do
+      assert admin_conn
+             |> put_req_header("content-type", "multipart/form-data")
+             |> post("/api/pleroma/emoji/packs/files?name=not_loaded", %{
+               shortcode: "blank3",
+               filename: "dir/blank.png",
+               file: %Plug.Upload{
+                 filename: "blank.png",
+                 path: "#{@emoji_path}/test_pack/blank.png"
+               }
+             })
+             |> json_response_and_validate_schema(:not_found) == %{
+               "error" => "pack \"not_loaded\" is not found"
+             }
+    end
+
+    test "remove file with not loaded pack", %{admin_conn: admin_conn} do
+      assert admin_conn
+             |> delete("/api/pleroma/emoji/packs/files?name=not_loaded&shortcode=blank3")
+             |> json_response_and_validate_schema(:not_found) == %{
+               "error" => "pack \"not_loaded\" is not found"
+             }
+    end
+
+    test "remove file with empty shortcode", %{admin_conn: admin_conn} do
+      assert admin_conn
+             |> delete("/api/pleroma/emoji/packs/files?name=not_loaded&shortcode=")
+             |> json_response_and_validate_schema(:not_found) == %{
+               "error" => "pack \"not_loaded\" is not found"
+             }
+    end
+
+    test "update file with not loaded pack", %{admin_conn: admin_conn} do
+      assert admin_conn
+             |> put_req_header("content-type", "multipart/form-data")
+             |> patch("/api/pleroma/emoji/packs/files?name=not_loaded", %{
+               shortcode: "blank4",
+               new_shortcode: "blank3",
+               new_filename: "dir_2/blank_3.png"
+             })
+             |> json_response_and_validate_schema(:not_found) == %{
+               "error" => "pack \"not_loaded\" is not found"
+             }
+    end
+
+    test "new with shortcode as file with update", %{admin_conn: admin_conn} do
+      assert admin_conn
+             |> put_req_header("content-type", "multipart/form-data")
+             |> post("/api/pleroma/emoji/packs/files?name=test_pack", %{
+               shortcode: "blank4",
+               filename: "dir/blank.png",
+               file: %Plug.Upload{
+                 filename: "blank.png",
+                 path: "#{@emoji_path}/test_pack/blank.png"
+               }
+             })
+             |> json_response_and_validate_schema(200) == %{
+               "blank" => "blank.png",
+               "blank4" => "dir/blank.png",
+               "blank2" => "blank2.png"
+             }
+
+      assert File.exists?("#{@emoji_path}/test_pack/dir/blank.png")
+
+      assert admin_conn
+             |> put_req_header("content-type", "multipart/form-data")
+             |> patch("/api/pleroma/emoji/packs/files?name=test_pack", %{
+               shortcode: "blank4",
+               new_shortcode: "blank3",
+               new_filename: "dir_2/blank_3.png"
+             })
+             |> json_response_and_validate_schema(200) == %{
+               "blank3" => "dir_2/blank_3.png",
+               "blank" => "blank.png",
+               "blank2" => "blank2.png"
+             }
+
+      refute File.exists?("#{@emoji_path}/test_pack/dir/")
+      assert File.exists?("#{@emoji_path}/test_pack/dir_2/blank_3.png")
+
+      assert admin_conn
+             |> delete("/api/pleroma/emoji/packs/files?name=test_pack&shortcode=blank3")
+             |> json_response_and_validate_schema(200) == %{
+               "blank" => "blank.png",
+               "blank2" => "blank2.png"
+             }
+
+      refute File.exists?("#{@emoji_path}/test_pack/dir_2/")
+
+      on_exit(fn -> File.rm_rf!("#{@emoji_path}/test_pack/dir") end)
+    end
+
+    test "new with shortcode from url", %{admin_conn: admin_conn} do
+      mock(fn
+        %{
+          method: :get,
+          url: "https://test-blank/blank_url.png"
+        } ->
+          text(File.read!("#{@emoji_path}/test_pack/blank.png"))
+      end)
+
+      assert admin_conn
+             |> put_req_header("content-type", "multipart/form-data")
+             |> post("/api/pleroma/emoji/packs/files?name=test_pack", %{
+               shortcode: "blank_url",
+               file: "https://test-blank/blank_url.png"
+             })
+             |> json_response_and_validate_schema(200) == %{
+               "blank_url" => "blank_url.png",
+               "blank" => "blank.png",
+               "blank2" => "blank2.png"
+             }
+
+      assert File.exists?("#{@emoji_path}/test_pack/blank_url.png")
+
+      on_exit(fn -> File.rm_rf!("#{@emoji_path}/test_pack/blank_url.png") end)
+    end
+
+    test "new without shortcode", %{admin_conn: admin_conn} do
+      on_exit(fn -> File.rm_rf!("#{@emoji_path}/test_pack/shortcode.png") end)
+
+      assert admin_conn
+             |> put_req_header("content-type", "multipart/form-data")
+             |> post("/api/pleroma/emoji/packs/files?name=test_pack", %{
+               file: %Plug.Upload{
+                 filename: "shortcode.png",
+                 path: "#{Pleroma.Config.get([:instance, :static_dir])}/add/shortcode.png"
+               }
+             })
+             |> json_response_and_validate_schema(200) == %{
+               "shortcode" => "shortcode.png",
+               "blank" => "blank.png",
+               "blank2" => "blank2.png"
+             }
+    end
+
+    test "remove non existing shortcode in pack.json", %{admin_conn: admin_conn} do
+      assert admin_conn
+             |> delete("/api/pleroma/emoji/packs/files?name=test_pack&shortcode=blank3")
+             |> json_response_and_validate_schema(:bad_request) == %{
+               "error" => "Emoji \"blank3\" does not exist"
+             }
+    end
+
+    test "update non existing emoji", %{admin_conn: admin_conn} do
+      assert admin_conn
+             |> put_req_header("content-type", "multipart/form-data")
+             |> patch("/api/pleroma/emoji/packs/files?name=test_pack", %{
+               shortcode: "blank3",
+               new_shortcode: "blank4",
+               new_filename: "dir_2/blank_3.png"
+             })
+             |> json_response_and_validate_schema(:bad_request) == %{
+               "error" => "Emoji \"blank3\" does not exist"
+             }
+    end
+
+    test "update with empty shortcode", %{admin_conn: admin_conn} do
+      assert %{
+               "error" => "Missing field: new_shortcode."
+             } =
+               admin_conn
+               |> put_req_header("content-type", "multipart/form-data")
+               |> patch("/api/pleroma/emoji/packs/files?name=test_pack", %{
+                 shortcode: "blank",
+                 new_filename: "dir_2/blank_3.png"
+               })
+               |> json_response_and_validate_schema(:bad_request)
+    end
+  end
+end