Continue to refactor autoserv to build client test at run time.

server/prebuild.py

Index: server/prebuild.py
diff --git a/server/prebuild.py b/server/prebuild.py
new file mode 100644
index 0000000000000000000000000000000000000000..4d786050e0128315c6b076926f5fed20c40173ee
--- /dev/null
+++ b/server/prebuild.py
@@ -0,0 +1,64 @@
+# Copyright 2010 Google Inc. Released under the GPL v2
+#
+# Eric Li <ericli@google.com>
+
+import logging, os, pickle, re, sys
+import common
+from autotest_lib.client.bin import setup_job as client_setup_job
+
+
+def touch_init(parent_dir, child_dir):
+    """
+    Touch __init__.py file all alone through from dir_patent to child_dir.
+
+    So client tests could be loaded as Python modules. Assume child_dir is a
+    subdirectory of parent_dir.
+    """
+
+    if not child_dir.startswith(parent_dir):
+        logging.error('%s is not a subdirectory of %s' % (child_dir,
+                                                          parent_dir))
+        return
+    sub_parent_dirs = parent_dir.split(os.path.sep)
+    sub_child_dirs = child_dir.split(os.path.sep)
+    for sub_dir in sub_child_dirs[len(sub_parent_dirs):]:
+        sub_parent_dirs.append(sub_dir)
+        path = os.path.sep.join(sub_parent_dirs)
+        init_py = os.path.join(path, '__init__.py')
+        open(init_py, 'a').close()
+
+
+def init_test(testdir):
+    """
+    Instantiate a client test object from a given test directory.
+
+    @param testdir The test directory.
+    @returns A test object or None if failed to instantiate.
+    """
+
+    class options:
+        tag = ''
+        verbose = None
+        cont = False
+        harness = 'autoserv'
+        hostname = None
+        user = None
+        log = True
+    return client_setup_job.init_test(options, testdir)
+
+
+def setup(autotest_client_dir, client_test_dir):
+    """
+    Setup prebuild of a client test.
+
+    @param autotest_client_dir: The autotest/client base directory.
+    @param client_test_dir: The actual test directory under client.
+    """
+
+    os.environ['AUTODIR'] = autotest_client_dir
+    touch_init(autotest_client_dir, client_test_dir)
+
+    # instantiate a client_test instance.
+    client_test = init_test(client_test_dir)
+    client_setup_job.setup_test(client_test)
+