build: make all tests optional

This can help cut down on link times a bit when working on things.

eel/meson.build

@@ -56,6 +56,6 @@ check_eel = executable(
   ]
 )
 
-if get_option('display-tests')
+if get_option('tests') == 'all'
   test('check-eel', check_eel)
 endif

meson.build

@@ -121,7 +121,9 @@ subdir('eel')
 subdir('libnautilus-extension')
 
 subdir('src')
-subdir('test')
+if get_option('tests') != 'none'
+  subdir('test')
+endif
 subdir('data')
 subdir('po')
 if get_option('docs')

meson_options.txt

@@ -3,4 +3,4 @@ option('profiling', type: 'boolean', value: false)
 option('extensions', type: 'boolean', value: true)
 option('packagekit', type: 'boolean', value: true)
 option('selinux', type: 'boolean', value: false)
-option('display-tests', type: 'boolean', value: false)
+option('tests', type: 'combo', choices: ['none', 'headless', 'all'], value: 'headless')

src/meson.build

@@ -303,7 +303,7 @@ nautilus = executable(
   install: true
 )
 
-if get_option('display-tests')
+if get_option('tests') == 'all'
   test(
     'nautilus', nautilus,
     args: [

test/automated/meson.build

@@ -1,4 +1,4 @@
 subdir('displayless')
-if get_option('display-tests')
+if get_option('tests') == 'all'
   subdir('display')
 endif