Test coverage: Switch to covertool to get cobertura output

This allows to have coverage information integrated into Gitlab

.gitignore

@@ -48,6 +48,7 @@ docs/generated_config.md
 # Code test coverage
 /cover
 /Elixir.*.coverdata
+/coverage.xml
 
 .idea
 pleroma.iml

.gitlab-ci.yml

@@ -84,7 +84,13 @@ unit-testing:
   script:
     - mix ecto.create
     - mix ecto.migrate
-    - mix coveralls --preload-modules
+    - mix test --cover --preload-modules
+  coverage: '/^Line total: ([^ ]*%)$/'
+  artifacts:
+    reports:
+      coverage_report:
+        coverage_format: cobertura
+        path: coverage.xml
 
 unit-testing-erratic:
   stage: test

mix.exs

@@ -13,8 +13,7 @@ defmodule Pleroma.Mixfile do
       start_permanent: Mix.env() == :prod,
       aliases: aliases(),
       deps: deps(),
-      test_coverage: [tool: ExCoveralls],
-      preferred_cli_env: ["coveralls.html": :test],
+      test_coverage: [tool: :covertool, summary: true],
       # Docs
       name: "Pleroma",
       homepage_url: "https://pleroma.social/",
@@ -207,8 +206,7 @@ defmodule Pleroma.Mixfile do
       {:ex_machina, "~> 2.4", only: :test},
       {:credo, "~> 1.4", only: [:dev, :test], runtime: false},
       {:mock, "~> 0.3.5", only: :test},
-      # temporary downgrade for excoveralls, hackney until hackney max_connections bug will be fixed
-      {:excoveralls, "0.12.3", only: :test},
+      {:covertool, "~> 2.0", only: :test},
       {:hackney, "~> 1.18.0", override: true},
       {:mox, "~> 1.0", only: :test},
       {:websocket_client, git: "https://github.com/jeremyong/websocket_client.git", only: :test}

mix.lock

@@ -17,6 +17,7 @@
   "concurrent_limiter": {:hex, :concurrent_limiter, "0.1.1", "43ae1dc23edda1ab03dd66febc739c4ff710d047bb4d735754909f9a474ae01c", [:mix], [{:telemetry, "~> 0.3", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "53968ff238c0fbb4d7ed76ddb1af0be6f3b2f77909f6796e249e737c505a16eb"},
   "connection": {:hex, :connection, "1.1.0", "ff2a49c4b75b6fb3e674bfc5536451607270aac754ffd1bdfe175abe4a6d7a68", [:mix], [], "hexpm", "722c1eb0a418fbe91ba7bd59a47e28008a189d47e37e0e7bb85585a016b2869c"},
   "cors_plug": {:hex, :cors_plug, "2.0.3", "316f806d10316e6d10f09473f19052d20ba0a0ce2a1d910ddf57d663dac402ae", [:mix], [{:plug, "~> 1.8", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "ee4ae1418e6ce117fc42c2ba3e6cbdca4e95ecd2fe59a05ec6884ca16d469aea"},
+  "covertool": {:hex, :covertool, "2.0.4", "54acff6cddd88d28dea663cd2e1fe20dd32fcf5f5d3aff7d59031ce44ce39efa", [:rebar3], [], "hexpm", "5c9568ba4308fda2082172737c80c31d991ea83961eb10791f06106a870d0cdc"},
   "cowboy": {:hex, :cowboy, "2.9.0", "865dd8b6607e14cf03282e10e934023a1bd8be6f6bacf921a7e2a96d800cd452", [:make, :rebar3], [{:cowlib, "2.11.0", [hex: :cowlib, repo: "hexpm", optional: false]}, {:ranch, "1.8.0", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm", "2c729f934b4e1aa149aff882f57c6372c15399a20d54f65c8d67bef583021bde"},
   "cowboy_telemetry": {:hex, :cowboy_telemetry, "0.3.1", "ebd1a1d7aff97f27c66654e78ece187abdc646992714164380d8a041eda16754", [:rebar3], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "3a6efd3366130eab84ca372cbd4a7d3c3a97bdfcfb4911233b035d117063f0af"},
   "cowlib": {:hex, :cowlib, "2.11.0", "0b9ff9c346629256c42ebe1eeb769a83c6cb771a6ee5960bd110ab0b9b872063", [:make, :rebar3], [], "hexpm", "2b3e9da0b21c4565751a6d4901c20d1b4cc25cbb7fd50d91d2ab6dd287bc86a9"},
@@ -45,7 +46,6 @@
   "ex_doc": {:hex, :ex_doc, "0.24.2", "e4c26603830c1a2286dae45f4412a4d1980e1e89dc779fcd0181ed1d5a05c8d9", [:mix], [{:earmark_parser, "~> 1.4.0", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "e134e1d9e821b8d9e4244687fb2ace58d479b67b282de5158333b0d57c6fb7da"},
   "ex_machina": {:hex, :ex_machina, "2.7.0", "b792cc3127fd0680fecdb6299235b4727a4944a09ff0fa904cc639272cd92dc7", [:mix], [{:ecto, "~> 2.2 or ~> 3.0", [hex: :ecto, repo: "hexpm", optional: true]}, {:ecto_sql, "~> 3.0", [hex: :ecto_sql, repo: "hexpm", optional: true]}], "hexpm", "419aa7a39bde11894c87a615c4ecaa52d8f107bbdd81d810465186f783245bf8"},
   "ex_syslogger": {:hex, :ex_syslogger, "1.5.2", "72b6aa2d47a236e999171f2e1ec18698740f40af0bd02c8c650bf5f1fd1bac79", [:mix], [{:poison, ">= 1.5.0", [hex: :poison, repo: "hexpm", optional: true]}, {:syslog, "~> 1.1.0", [hex: :syslog, repo: "hexpm", optional: false]}], "hexpm", "ab9fab4136dbc62651ec6f16fa4842f10cf02ab4433fa3d0976c01be99398399"},
-  "excoveralls": {:hex, :excoveralls, "0.12.3", "2142be7cb978a3ae78385487edda6d1aff0e482ffc6123877bb7270a8ffbcfe0", [:mix], [{:hackney, "~> 1.0", [hex: :hackney, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "568a3e616c264283f5dea5b020783ae40eef3f7ee2163f7a67cbd7b35bcadada"},
   "fast_html": {:hex, :fast_html, "2.0.5", "c61760340606c1077ff1f196f17834056cb1dd3d5cb92a9f2cabf28bc6221c3c", [:make, :mix], [{:elixir_make, "~> 0.4", [hex: :elixir_make, repo: "hexpm", optional: false]}, {:nimble_pool, "~> 0.2.0", [hex: :nimble_pool, repo: "hexpm", optional: false]}], "hexpm", "605f4f4829443c14127694ebabb681778712ceecb4470ec32aa31012330e6506"},
   "fast_sanitize": {:hex, :fast_sanitize, "0.2.2", "3cbbaebaea6043865dfb5b4ecb0f1af066ad410a51470e353714b10c42007b81", [:mix], [{:fast_html, "~> 2.0", [hex: :fast_html, repo: "hexpm", optional: false]}, {:plug, "~> 1.8", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "69f204db9250afa94a0d559d9110139850f57de2b081719fbafa1e9a89e94466"},
   "file_system": {:hex, :file_system, "0.2.10", "fb082005a9cd1711c05b5248710f8826b02d7d1784e7c3451f9c1231d4fc162d", [:mix], [], "hexpm", "41195edbfb562a593726eda3b3e8b103a309b733ad25f3d642ba49696bf715dc"},