build: Get rid of manually-maintained lists of tests.

src/platform/window_manager/SConstruct

 # Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import os
 
 Help('''\
 Type: 'scons' to build and 'scons -c' to clean\
 ''')
 
@@ skipping 141 matching lines @@
 libtest = wm_env.Library('test', Split(srcs))
 
 wm_env['LIBS'] += [libwm_core, libwm_ipc, 'libbreakpad']
 
 wm_env.Program('wm', 'main.cc')
 
 test_env = wm_env.Clone()
 test_env['LINKFLAGS'].append('-lgtest')
 # libtest needs to be listed first since it depends on wm_core and wm_ipc.
 test_env['LIBS'].insert(0, libtest)
-test_env.Program('key_bindings_test', 'key_bindings_test.cc')
-test_env.Program('layout_manager_test', 'layout_manager_test.cc')
-test_env.Program('no_clutter_test', 'no_clutter_test.cc')
-test_env.Program('panel_bar_test', 'panel_bar_test.cc')
-test_env.Program('panel_test', 'panel_test.cc')
-test_env.Program('shadow_test', 'shadow_test.cc')
-test_env.Program('stacking_manager_test', 'stacking_manager_test.cc')
-test_env.Program('util_test', 'util_test.cc')
-test_env.Program('window_manager_test', 'window_manager_test.cc')
-test_env.Program('window_test', 'window_test.cc')
-test_env.Program('x_connection_test', 'x_connection_test.cc')
+tests = []
+for test_src in Glob('*_test.cc', strings=True):
+  tests += test_env.Program(test_src)
+# Create a 'tests' target that will build all tests.
+test_env.Alias('tests', tests)
 
 mock_chrome_env = wm_env.Clone()
 mock_chrome_env.ParseConfig('pkg-config --cflags --libs gtkmm-2.4')
 mock_chrome_env.Program('mock_chrome', 'mock_chrome.cc')