buildman: Allow skipping of tests which use the network

Accessing the network slows down the test and limits the environment in
which it can be run. Add an option to disable network tests.

Signed-off-by: Simon Glass <sjg@chromium.org>

tools/buildman/buildman.py

@@ -30,7 +30,7 @@ import patchstream
 import terminal
 import toolchain
 
-def RunTests():
+def RunTests(skip_net_tests):
     import func_test
     import test
     import doctest
@@ -41,6 +41,8 @@ def RunTests():
         suite.run(result)
 
     sys.argv = [sys.argv[0]]
+    if skip_net_tests:
+        test.use_network = False
     for module in (test.TestBuild, func_test.TestFunctional):
         suite = unittest.TestLoader().loadTestsFromTestCase(module)
         suite.run(result)
@@ -56,7 +58,7 @@ options, args = cmdline.ParseArgs()
 
 # Run our meagre tests
 if options.test:
-    RunTests()
+    RunTests(options.skip_net_tests)
 
 # Build selected commits for selected boards
 else:

tools/buildman/cmdline.py

@@ -82,6 +82,8 @@ def ParseArgs():
           default=False, help='Show a build summary')
     parser.add_option('-S', '--show-sizes', action='store_true',
           default=False, help='Show image size variation in summary')
+    parser.add_option('--skip-net-tests', action='store_true', default=False,
+                      help='Skip tests which need the network')
     parser.add_option('--step', type='int',
           default=1, help='Only build every n commits (0=just first and last)')
     parser.add_option('-t', '--test', action='store_true', dest='test',

tools/buildman/test.py

@@ -24,6 +24,8 @@ import commit
 import terminal
 import toolchain
 
+use_network = True
+
 settings_data = '''
 # Buildman settings file
 
@@ -410,8 +412,9 @@ class TestBuild(unittest.TestCase):
 
     def testToolchainDownload(self):
         """Test that we can download toolchains"""
-        self.assertEqual('https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.9.0/x86_64-gcc-4.9.0-nolibc_arm-unknown-linux-gnueabi.tar.xz',
-            self.toolchains.LocateArchUrl('arm'))
+        if use_network:
+            self.assertEqual('https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.9.0/x86_64-gcc-4.9.0-nolibc_arm-unknown-linux-gnueabi.tar.xz',
+                self.toolchains.LocateArchUrl('arm'))
 
 
 if __name__ == "__main__":