test: meson: Use dictionaries instead of arrays to store test information

Tests are listed in meson.build using arrays that contain the test name
and source files at fixed positions. This isn't very readable, leading
to code using test[0], test[1] and test[2]. Replace the arrays with
dictionaries to improve readability.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>

test/gstreamer/meson.build

@@ -5,16 +5,16 @@ if not gst_enabled
 endif
 
 gstreamer_tests = [
-    ['single_stream_test',   'gstreamer_single_stream_test.cpp'],
-    ['multi_stream_test',    'gstreamer_multi_stream_test.cpp'],
+    {'name': 'single_stream_test', 'sources': ['gstreamer_single_stream_test.cpp']},
+    {'name': 'multi_stream_test', 'sources': ['gstreamer_multi_stream_test.cpp']},
 ]
 gstreamer_dep = dependency('gstreamer-1.0', required: true)
 
 foreach test : gstreamer_tests
-    exe = executable(test[0], test[1], 'gstreamer_test.cpp',
+    exe = executable(test['name'], test['sources'], 'gstreamer_test.cpp',
                      dependencies : [libcamera_private, gstreamer_dep],
                      link_with : test_libraries,
                      include_directories : test_includes_internal)
 
-    test(test[0], exe, suite : 'gstreamer', is_parallel : false)
+    test(test['name'], exe, suite : 'gstreamer', is_parallel : false)
 endforeach