tests: Check for required WAV decoder for notification tests

Otherwise the sound validator will reject what the tests consider a
valid sound and fail.

.github/workflows/Containerfile

@@ -27,6 +27,7 @@ RUN apt install -y --no-install-recommends \
     libgstreamer-plugins-base1.0-dev \
     gstreamer1.0-plugins-good \
     libgstreamer-plugins-good1.0-dev \
+    gstreamer1.0-tools \
     libgeoclue-2-dev \
     libglib2.0-dev \
     libgudev-1.0-dev \

.github/workflows/container.yml

@@ -1,5 +1,5 @@
 env:
-  IMAGE_TAG: 20241210-1
+  IMAGE_TAG: 20241211-1
 
 on:
   workflow_call:

meson.build

@@ -135,6 +135,16 @@ libsystemd_dep = dependency('libsystemd', required: get_option('systemd'))
 gudev_dep = dependency('gudev-1.0', required: get_option('gudev'))
 umockdev_dep = dependency('umockdev-1.0', required: get_option('pytest'))
 
+gst_inspect = find_program('gst-inspect-1.0', required: false)
+if gst_inspect.found()
+  have_wav_parse = run_command(
+    gst_inspect, 'wavparse', '--exists',
+    check: false,
+  ).returncode() == 0
+else
+  have_wav_parse = false
+endif
+
 bwrap = find_program('bwrap', required: get_option('sandboxed-image-validation').allowed() or get_option('sandboxed-sound-validation').allowed())
 
 if not bwrap.found()

tests/meson.build

@@ -101,7 +101,6 @@ if have_libportal
     'email.c',
     'filechooser.c',
     'inhibit.c',
-    'notification.c',
     'openuri.c',
     'print.c',
     'screenshot.c',
@@ -111,6 +110,12 @@ if have_libportal
   )
 endif
 
+if have_wav_parse
+  portals_test_sources += files(
+    'notification.c',
+  )
+endif
+
 test_portals = executable(
   'test-portals',
   'test-portals.c',
@@ -277,11 +282,15 @@ python = pymod.find_installation(
   required: get_option('pytest'),
 )
 
-enable_pytest = \
-  pytest.found() and \
-  python.found() and \
-  python.language_version().version_compare('>=3.9') and \
-  umockdev_dep.found()
+enable_pytest = get_option('pytest') \
+  .require(pytest.found()) \
+  .require(python.found()) \
+  .require(python.language_version().version_compare('>=3.9'),
+           error_message: 'Python version >=3.9 is required') \
+  .require(umockdev_dep.found()) \
+  .require(have_wav_parse,
+           error_message: 'gst-inspect and the wavparse plugins are required') \
+  .allowed()
 
 if enable_pytest
   subdir('templates')