Add install_script argument to binary search tool.

Add optional install_script argument that will run before test_script
use this install_script to perform building/flashing/other misc. setup.
If your build or flash succeeds then return 0, otherwise return 1 and
this build will be "skipped" (equivalent to the test script returning
a 2 exit code).

Test=Update unit tests to test for successful and failed install

Change-Id: Ic492f08230796f50b7bb93aebe078960419a3c99
Reviewed-on: https://chrome-internal-review.googlesource.com/262988
Commit-Ready: Cassidy Burden <cburden@google.com>
Tested-by: Cassidy Burden <cburden@google.com>
Reviewed-by: Caroline Tice <cmtice@google.com>

5 files changed, 58 insertions, 0 deletions

diff --git a/binary_search_tool/test/binary_search_tool_tester.py b/binary_search_tool/test/binary_search_tool_tester.py
index 45ce0642..475680c6 100755
--- a/binary_search_tool/test/binary_search_tool_tester.py
+++ b/binary_search_tool/test/binary_search_tool_tester.py
@@ -42,7 +42,26 @@ class BisectingUtilsTest(unittest.TestCase):
             './switch_to_good.py', '--switch_to_bad', './switch_to_bad.py',
             '--test_script', './is_good.py', '--prune', '--file_args']
     binary_search_state.Main(args)
+    self.check_output()
 
+  def test_install_script(self):
+    args = ['--get_initial_items', './gen_init_list.py', '--switch_to_good',
+            './switch_to_good.py', '--switch_to_bad', './switch_to_bad.py',
+            '--test_script', './is_good.py', '--prune', '--file_args',
+            '--install_script', './install.py']
+    common.installed = False
+    binary_search_state.Main(args)
+    self.check_output()
+
+  def test_bad_install_script(self):
+    args = ['--get_initial_items', './gen_init_list.py', '--switch_to_good',
+            './switch_to_good.py', '--switch_to_bad', './switch_to_bad.py',
+            '--test_script', './is_good.py', '--prune', '--file_args',
+            '--install_script', './install_bad.py']
+    with self.assertRaises(AssertionError):
+      binary_search_state.Main(args)
+
+  def check_output(self):
     _, out, _ = command_executer.GetCommandExecuter().RunCommandWOutput(
         'tail -n 10 logs/binary_search_state.py.out')
     ls = out.splitlines()
@@ -63,6 +82,8 @@ def Main(argv):
   suite = unittest.TestSuite()
   for _ in range(0, num_tests):
     suite.addTest(BisectingUtilsTest())
+  suite.addTest(BisectingUtilsTest('test_install_script'))
+  suite.addTest(BisectingUtilsTest('test_bad_install_script'))
   runner = unittest.TextTestRunner()
   runner.run(suite)
 
diff --git a/binary_search_tool/test/common.py b/binary_search_tool/test/common.py
index baac9434..382274b9 100755
--- a/binary_search_tool/test/common.py
+++ b/binary_search_tool/test/common.py
@@ -6,6 +6,8 @@ DEFAULT_BAD_OBJECT_NUMBER = 23
 OBJECTS_FILE = 'objects.txt'
 WORKING_SET_FILE = 'working_set.txt'
 
+installed = True
+
 
 def ReadWorkingSet():
   working_set = []
diff --git a/binary_search_tool/test/install.py b/binary_search_tool/test/install.py
new file mode 100755
index 00000000..21cf97a1
--- /dev/null
+++ b/binary_search_tool/test/install.py
@@ -0,0 +1,18 @@
+#!/usr/bin/python2
+"""Emulate installation of files, is_good.py should fail without this."""
+
+from __future__ import print_function
+
+import sys
+
+import common
+
+
+def Main():
+  common.installed = True
+  return 0
+
+
+if __name__ == '__main__':
+  retval = Main()
+  sys.exit(retval)
diff --git a/binary_search_tool/test/install_bad.py b/binary_search_tool/test/install_bad.py
new file mode 100755
index 00000000..8b49a3f8
--- /dev/null
+++ b/binary_search_tool/test/install_bad.py
@@ -0,0 +1,15 @@
+#!/usr/bin/python2
+"""Emulate installation that fails (i.e. failed flash to device)"""
+
+from __future__ import print_function
+
+import sys
+
+
+def Main():
+  return 1  ## False, flashing failure
+
+
+if __name__ == '__main__':
+  retval = Main()
+  sys.exit(retval)
diff --git a/binary_search_tool/test/is_good.py b/binary_search_tool/test/is_good.py
index 586d6911..e2ab4642 100755
--- a/binary_search_tool/test/is_good.py
+++ b/binary_search_tool/test/is_good.py
@@ -9,6 +9,8 @@ import common
 
 
 def Main():
+  if not common.installed:
+    return 1
   working_set = common.ReadWorkingSet()
   for w in working_set:
     if w == 1: