Add test for python version file support

Author: kishaningithub

.github/workflows/test.yml

@@ -100,3 +100,38 @@ jobs:
 
           pip install requests
           pip3 install s4cmd
+
+  test_python_version_file:
+    runs-on: ubuntu-latest
+    container: amazonlinux:2023
+    steps:
+      - name: Setup runner
+        run: |
+          yum install -y git tar gzip sudo
+
+      - uses: actions/checkout@v3
+
+      - name: Create python version file
+        run: |
+          echo '3.11.5' > .python-version
+
+      - name: Install python
+        uses: ./
+        with:
+          python-version-file: ".python-version"
+
+      - name: Test installation
+        run: |
+          set -x
+
+          which python3
+          which python
+
+          python3 --version
+          python --version
+
+          python3 --version 2>&1 | grep -F "3.11.5"
+          test "$(python3 -m pip --version)" = "$(pip3 --version)"
+
+          python --version 2>&1 | grep -F "3.11.5"
+          test "$(python3 -m pip --version)" = "$(pip --version)"

action.yml

@@ -2,8 +2,10 @@ name: 'Setup python amazon linux'
 description: 'setup-python action for amazon linux self hosted runners'
 inputs:
   python-version:
+    description: 'Version of python to be installed. Reads from .python-version if unset.'
+  python-version-file:
     description: 'Version of python to be installed'
-    required: true
+    default: ".python-version"
   cache:
     description: Used to specify whether caching is needed. Set to true, if you'd like to enable caching.
     required: true
@@ -20,7 +22,7 @@ runs:
       id: find-exact-python-version
       shell: bash
       run: |
-        exact_python_version=$(${GITHUB_ACTION_PATH}/find-exact-python-version.sh "${{ inputs.python-version }}")
+        exact_python_version=$(${GITHUB_ACTION_PATH}/find-exact-python-version.sh "${{ inputs.python-version }}" "${{ inputs.python-version-file }}")
         echo "exact_python_version=${exact_python_version}" >> $GITHUB_OUTPUT
 
     - name: Set installation directory

find-exact-python-version.sh

@@ -3,6 +3,7 @@
 set -euo pipefail
 
 specified_version="$1"
+specified_version_file="$2"
 
 # This versions map should be kept in sync with
 # - https://www.python.org/downloads/