CI/CD improvement

Author: Aleksey Petrunnik

.github/workflows/test.yml

@@ -1,6 +1,12 @@
 name: Tests
 
-on: push
+on:
+  pull_request:
+    branches:
+      - '*'
+  push:
+    branches:
+      - 'master'
 
 env:
   POETRY_VERSION: "1.1.13"
@@ -36,8 +42,6 @@ jobs:
       matrix:
         py_version: [ "3.8", "3.9", "3.10" ]
         os: [ ubuntu-22.04 ]
-    env:
-      BRANCH_NAME: ${{ github.head_ref || github.ref_name }}
     runs-on: "${{ matrix.os }}"
     steps:
       - uses: actions/checkout@v3
@@ -67,7 +71,7 @@ jobs:
           fi
       - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v3
-        if: matrix.os == 'ubuntu-22.04' && matrix.py_version == '3.8' && env.BRANCH_NAME == 'master'
+        if: matrix.os == 'ubuntu-22.04' && matrix.py_version == '3.8'
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           fail_ci_if_error: true