2 - Testing rendering

.github/workflows/test.yml

@@ -0,0 +1,46 @@
+name: Tests
+on:
+    push
+jobs:
+  elixir-test:
+    name: Test Elixir
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [ubuntu-24.04]
+        otp: [27.x]
+        elixir: [1.18.3]
+    services:
+      postgres:
+        image: postgres
+        env:
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: ranger_test
+          POSTGRES_PORT: 5432
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: erlef/setup-beam@v1
+        with:
+          otp-version: ${{ matrix.otp }}
+          elixir-version: ${{ matrix.elixir }}
+
+      - name: Install dependencies
+        run: |
+          mix local.rebar --force
+          mix local.hex --force
+          mix deps.get
+      - name: Prepare upload directory
+        run: mkdir -p priv/static/uploads/test
+      - name: Run tests
+        run: |
+          mix compile --force --
+          mix test mix test test/ranger_web/live/greet_live_test.exs  

test/ranger_web/live/greet_live_test.exs

@@ -2,4 +2,32 @@ defmodule RangerWeb.GreetLiveTest do
   use RangerWeb.ConnCase
 
   import Phoenix.LiveViewTest
+
+  test "renders disconnected state", %{conn: conn} do
+    disconnected = conn |> get(~p"/greet")
+
+    assert html_response(disconnected, 200) =~ "Welcome to stateless HTTP"
+  end
+
+  test "upgrades the connection", %{conn: conn} do
+    disconnected = conn |> get(~p"/greet")
+
+    {:ok, _view, html} = live(disconnected)
+
+    assert html =~ "Welcome to Testing LiveView"
+  end
+
+  test "rendering connected state", %{conn: conn} do
+    {:ok, _view, html} = live(conn, ~p"/greet")
+
+    assert html =~ "Welcome to Testing LiveView"
+  end
+
+  test "rendering with the view", %{conn: conn} do
+    {:ok, view, _html} = live(conn, ~p"/greet")
+
+    assert view.module == RangerWeb.GreetLive
+    assert is_pid(view.pid)
+    assert render(view) =~ "Welcome to Testing LiveView"
+  end
 end