Add CI

* Add CI

.github/workflows/ci.yml

@@ -0,0 +1,36 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - v*
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        inkscape-ppa:
+          - stable
+          - stable-1.1
+      fail-fast: false
+    env:
+      DISPLAY: :0
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install dependencies
+        run: sudo apt-get install -y xvfb
+      - name: Install Inkscape
+        run: |
+          sudo add-apt-repository ppa:inkscape.dev/${{ matrix.inkscape-ppa }}
+          sudo apt-get update
+          sudo apt-get install -y inkscape
+      - name: Start Xvfb in background
+        run: sudo /usr/bin/Xvfb $DISPLAY -screen 0 1280x1024x24 &
+      - name: Run tests
+        run: sh tests/run.sh

tests/run.sh

@@ -51,7 +51,7 @@ move_extension_to_user_extensions_directory() {
 configure_profile_preferences() {
   locale="$1"
   preferences_filepath="$(inkscape --user-data-directory)/preferences.xml"
-  locale_pref="$(< $preferences_filepath grep -o "org.inkscape.text.braille-l18n.locale")"
+  locale_pref="$(< $preferences_filepath grep -o "org.inkscape.text.braille-l18n.locale" || true)"
 
   # if locale preference is present
   if [ -n "$locale_pref" ]; then
@@ -95,7 +95,7 @@ test_extension_effect() {
   configure_profile_preferences "$locale"
 
   # run extension using inkscape in headless mode with Xvfb
-  xvfb-run inkscape \
+  xvfb-run --auto-servernum inkscape \
     --batch-process \
     --export-plain-svg \
     --vacuum-defs \
@@ -106,7 +106,7 @@ test_extension_effect() {
   extract_svg_output_text "$svg_output_filepath" > "$txt_output_filepath"
 
   if ! diff --brief "$txt_output_filepath" "$txt_expect_filepath"; then
-    printf "Red: $txt_output_filepath - Green: $txt_expect_filepath\n"
+    printf "<: $txt_output_filepath\n>: $txt_expect_filepath\n"
     # ignore error (or file exits due to 'set -e')
     diff --color "$txt_output_filepath" "$txt_expect_filepath" || true
     printf "\n"