Fix CI

This patch moves CI checks into GitHub actions and away from CircleCI. Hooray.

.github/workflows/checks.yaml

@@ -0,0 +1,45 @@
+name: Elixir CI
+
+on:
+  push:
+
+# Sets the ENV `MIX_ENV` to `test` for running tests
+env:
+  MIX_ENV: test
+
+permissions:
+  contents: read
+
+jobs:
+  lint:
+    name: "Elixir Lint"
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Compile with cache
+        uses: ./.github/workflows/setup-elixir
+
+      # If this complains about redefining modules as a warning,
+      # there can be a probem with the cached build, so switch to giving
+      # a cache key modifier input on the setup elixir action (e.g. key <> "lint" )
+      - name: Compiles without warnings
+        run: mix compile --warnings-as-errors
+
+      - name: Check Formatting
+        run: mix format --check-formatted
+
+  test-and-coverage:
+    permissions: write-all
+    name: "Elixir Tests"
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Compile with cache
+        uses: ./.github/workflows/setup-elixir
+
+      - name: Run Elixir Tests
+        run: mix test --formatter JUnitFormatter --formatter ExUnit.CLIFormatter

.github/workflows/setup-elixir/action.yaml

@@ -0,0 +1,57 @@
+name: Set up Elixir with cached build
+description: "pulls in the elixir dependencies and builds a cache for the compiled build"
+inputs:
+  mix_env:
+    description: "MIX_ENV to compile"
+    required: true
+    default: "test"
+
+runs:
+  using: "composite"
+  steps:
+    # Step: Setup Elixir + Erlang image as the base.
+    - name: Set up Elixir
+      uses: erlef/setup-beam@v1
+      with:
+        otp-version: "26.1.2"
+        elixir-version: "1.15"
+
+    # Step: Define how to cache deps. Restores existing cache if present.
+    - name: Cache deps
+      id: cache-deps
+      uses: actions/cache@v3
+      env:
+        cache-name: cache-elixir-deps
+      with:
+        path: deps
+        key: ${{ runner.os }}-mix-${{ inputs.mix_env }}-${{ env.cache-name }}-${{ hashFiles('**/mix.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-mix-${{ inputs.mix_env }}-${{ env.cache-name }}-
+
+    # Step: Define how to cache the `_build` directory. After the first run,
+    # this speeds up tests runs a lot. This includes not re-compiling our
+    # project's downloaded deps every run.
+    - name: Cache compiled build
+      id: cache-build
+      uses: actions/cache@v3
+      env:
+        cache-name: cache-compiled-build
+      with:
+        path: _build
+        key: ${{ runner.os }}-mix-${{ inputs.mix_env }}-${{ env.cache-name }}-${{ hashFiles('**/mix.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-mix-${{ inputs.mix_env }}-${{ env.cache-name }}-
+          ${{ runner.os }}-mix-${{ inputs.mix_env }}-
+
+    # Step: Download project dependencies. If unchanged, uses
+    # the cached version.
+    - name: Install dependencies
+      shell: bash
+      run: mix deps.get
+
+    # Step: Compile the project for test and cache the build
+    - name: Build for cache
+      shell: bash
+      run: mix compile
+      env:
+        MIX_ENV: ${{ inputs.mix_env }}

mix.exs

@@ -31,6 +31,7 @@ defmodule ABI.Mixfile do
       {:ex_doc, "~> 0.31.1", only: :dev, runtime: false},
       {:jason, "~> 1.4"},
       {:ex_sha3, "~> 0.1.4"},
+      {:junit_formatter, "~> 3.1", only: [:test, :integration]}
     ]
   end
 end

mix.lock

@@ -22,6 +22,7 @@
   "httpoison": {:hex, :httpoison, "1.4.0", "e0b3c2ad6fa573134e42194d13e925acfa8f89d138bc621ffb7b1989e6d22e73", [:mix], [{:hackney, "~> 1.8", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm"},
   "idna": {:hex, :idna, "6.0.0", "689c46cbcdf3524c44d5f3dde8001f364cd7608a99556d8fbd8239a5798d4c10", [:rebar3], [{:unicode_util_compat, "0.4.1", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm"},
   "jason": {:hex, :jason, "1.4.1", "af1504e35f629ddcdd6addb3513c3853991f694921b1b9368b0bd32beb9f1b63", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "fbb01ecdfd565b56261302f7e1fcc27c4fb8f32d56eab74db621fc154604a7a1"},
+  "junit_formatter": {:hex, :junit_formatter, "3.3.1", "c729befb848f1b9571f317d2fefa648e9d4869befc4b2980daca7c1edc468e40", [:mix], [], "hexpm", "761fc5be4b4c15d8ba91a6dafde0b2c2ae6db9da7b8832a55b5a1deb524da72b"},
   "keccakf1600": {:hex, :keccakf1600_orig, "2.0.0", "0a7217ddb3ee8220d449bbf7575ec39d4e967099f220a91e3dfca4dbaef91963", [:rebar3], [], "hexpm"},
   "libsecp256k1": {:hex, :libsecp256k1, "0.1.10", "d27495e2b9851c7765129b76c53b60f5e275bd6ff68292c50536bf6b8d091a4d", [:make, :mix], [{:mix_erlang_tasks, "0.1.0", [hex: :mix_erlang_tasks, repo: "hexpm", optional: false]}], "hexpm"},
   "logger_file_backend": {:hex, :logger_file_backend, "0.0.10", "876f9f84ae110781207c54321ffbb62bebe02946fe3c13f0d7c5f5d8ad4fa910", [:mix], [], "hexpm"},