github: split checks into 3 jobs

To speed it up a bit.

Signed-off-by: Ondřej Budai <ondrej@budai.cz>

.github/workflows/tests.yml

@@ -12,7 +12,59 @@ on:
 
 jobs:
   lint:
-    name: "🛃 Checks"
+    name: "🛃 Unit tests"
+    runs-on: ubuntu-20.04
+    steps:
+
+      - name: Set up Go 1.16
+        uses: actions/setup-go@v2.1.5
+        with:
+          go-version: 1.16
+        id: go
+
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v2.4.0
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+
+        # This is needed to test internal/upload/koji package
+      - name: Install kerberos devel package
+        run: sudo apt-get install -y libkrb5-dev
+
+      - name: Run unit tests
+        run: go test -race -covermode=atomic -coverprofile=coverage.txt -coverpkg=$(go list ./... | grep -v rpmmd/test$ | tr "\n" ",") ./...
+
+      - name: Send coverage to codecov.io
+        run: bash <(curl -s https://codecov.io/bash)
+
+  unit-tests:
+    name: "⌨ Lint"
+    runs-on: ubuntu-20.04
+    steps:
+
+      - name: Set up Go 1.16
+        uses: actions/setup-go@v2.1.5
+        with:
+          go-version: 1.16
+        id: go
+
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v2.4.0
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: Install golangci-lint
+        run: curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh| sh -s -- -b $(go env GOPATH)/bin v1.30.0
+
+        # This is needed to lint internal/upload/koji package
+      - name: Install kerberos devel package
+        run: sudo apt-get install -y libkrb5-dev
+
+      - name: Run golangci-lint
+        run: $(go env GOPATH)/bin/golangci-lint run --timeout 5m0s
+
+  prepare:
+    name: "🔍 Check source preparation"
     runs-on: ubuntu-20.04
     steps:
 
@@ -39,22 +91,6 @@ jobs:
             exit "0"
           fi
 
-      - name: Install golangci-lint
-        run: curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh| sh -s -- -b $(go env GOPATH)/bin v1.30.0
-
-        # This is needed to lint internal/upload/koji package
-      - name: Install kerberos devel package
-        run: sudo apt-get install -y libkrb5-dev
-
-      - name: Run golangci-lint
-        run: $(go env GOPATH)/bin/golangci-lint run --timeout 5m0s
-
-      - name: Run unit tests
-        run: go test -race -covermode=atomic -coverprofile=coverage.txt -coverpkg=$(go list ./... | grep -v rpmmd/test$ | tr "\n" ",") ./...
-
-      - name: Send coverage to codecov.io
-        run: bash <(curl -s https://codecov.io/bash)
-
   shellcheck:
     name: "🐚 Shellcheck"
     runs-on: ubuntu-20.04