Streamline GitHub Actions. (#39)

Move the build of the manager binary to the unit-tests Prow script.
Remove the linting of the code in favor of the lint Prow script.

Author: qbarrand

.github/workflows/test-build.yml

@@ -0,0 +1,29 @@
+name: Test and upload to Codecov
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+jobs:
+  test-build:
+    name: Test and upload to Codecov
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - uses: actions/setup-go@v3
+      with:
+        go-version: 1.18
+
+    - name: Generate code
+      run: make generate
+
+    - name: Run tests
+      run: make unit-test
+
+    - name: Upload the coverage to Codecov
+      uses: codecov/codecov-action@v3

.github/workflows/test-codecov.yml

@@ -2,4 +2,14 @@
 
 set -euxo pipefail
 
+# Generate code and compare with the current source.
+# Fail with a diff if some files are outdated.
+go install github.com/golang/mock/[email protected]
+PATH="${PATH}:${GOPATH}/bin" make generate
+
+if ! git diff --exit-code; then
+    echo "Changes detected"
+    exit 1
+fi
+
 make lint