Add support for missing action runners

Turns out that Windows Server 2019 does not support locale names
specified in the format defined by the POSIX standard. This patch
converts the POSIX format to the one supported by Windows 2019.

In addition to that, this patch adds all supported action runners to
the continue integration, so we can make sure that this action works
properly on every supported platform.

Reported-by: Irena Rindos
Fixes: #25

Author: ikalnytskyi

.github/workflows/ci.yml

@@ -14,18 +14,31 @@ jobs:
     strategy:
       matrix:
         os:
-          - ubuntu-latest
-          - windows-latest
-          - macos-latest
-          - macos-13
+          - ubuntu-22.04
+          - ubuntu-20.04
+          - windows-2022
+          - windows-2019
           - macos-14
+          - macos-13
+          - macos-12
     steps:
       - uses: actions/checkout@v4
 
       - name: Run setup-postgres
         uses: ./
         id: postgres
 
+      - name: Run setup-python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.10"
+
+      - name: Setup tmate session
+        uses: mxschmitt/action-tmate@v3
+        with:
+          limit-access-to-actor: false
+        if: matrix.os == "windows-2019"
+
       - name: Run tests
         run: |
           python3 -m pip install --upgrade pip pytest psycopg furl
@@ -57,6 +70,11 @@ jobs:
           port: 34837
         id: postgres
 
+      - name: Run setup-python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.10"
+
       - name: Run tests
         run: |
           python3 -m pip install --upgrade pip pytest psycopg furl

action.yml

@@ -64,6 +64,18 @@ runs:
         export PGDATA="$RUNNER_TEMP/pgdata"
         export PWFILE="$RUNNER_TEMP/pwfile"
 
+        DEFAULT_ENCODING="UTF-8"
+        DEFAULT_LOCALE="en_US.$DEFAULT_ENCODING"
+
+        # Unfortunately, Windows Server 2019 doesn't understand locale
+        # specified in the format defined by the POSIX standard, i.e.
+        # <language>_<country>.<encoding>. Therefore, we have to convert it
+        # into something it can swallow, i.e. <language>-<country>.
+        if [[ "$RUNNER_OS" == "Windows" && "$(wmic os get Caption)" == *"2019"* ]]; then
+          DEFAULT_LOCALE="${DEFAULT_LOCALE%%.*}"
+          DEFAULT_LOCALE="${DEFAULT_LOCALE//_/-}"
+        fi
+
         # Unfortunately 'initdb' could only receive a password via file on disk
         # or prompt to enter on. Prompting is not an option since we're running
         # in non-interactive mode.
@@ -82,8 +94,8 @@ runs:
           --username="${{ inputs.username }}" \
           --pwfile="$PWFILE" \
           --auth="scram-sha-256" \
-          --encoding="UTF-8" \
-          --locale="en_US.UTF-8" \
+          --encoding="$DEFAULT_ENCODING" \
+          --locale="$DEFAULT_LOCALE" \
           --no-instructions
 
         # Do not create unix sockets since they are created by default in the

test_action.py

@@ -70,13 +70,13 @@ def test_service_name(service_name):
 
 
 def test_server_encoding(connection: psycopg.Connection):
-    """Test that PostgreSQL's encoding is 'UTF-8'."""
+    """Test that PostgreSQL's encoding matches the one we passed to initdb."""
 
     assert connection.execute("SHOW SERVER_ENCODING").fetchone()[0] == "UTF8"
 
 
 def test_locale(connection: psycopg.Connection):
-    """Test that PostgreSQL's locale is 'en_US.UTF-8'."""
+    """Test that PostgreSQL's locale matches the one we paased to initdb."""
 
     lc_collate = connection.execute("SHOW LC_COLLATE").fetchone()[0]
     lc_ctype = connection.execute("SHOW LC_CTYPE").fetchone()[0]