test: unit tests with workflow (#444)

* test: data group plan modifier tests

* fix: unit test workflow

.github/workflows/unit-test.yml

@@ -0,0 +1,34 @@
+name: "Test"
+
+# Run this workflow every time a new commit pushed to your repository
+on: push
+
+env:
+  GOLANG_VERSION: "1.21.x"
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        os: [ ubuntu-latest, windows-latest,  macOS-latest ]
+
+    name: test code base
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: Checkout code
+        uses: actions/[email protected]
+
+      - name: Configure Git for private modules
+        shell: bash
+        env:
+          GITHUB_API_TOKEN: ${{ secrets.GH_API_TOKEN }}
+        run: git config --global url."https://x:${GITHUB_API_TOKEN}@github.com".insteadOf "https://github.com"
+
+      - name: Install Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: ${{ env.GOLANG_VERSION }}
+
+      - name: Run unit tests
+        run: go test -p=1 -v ./...