Add support for parsing code coverage file path to runtest and related cleanup.

This change is to adapt runtest to the InstrumentationTestRunner change which
dumps coverage data to the app's local data folder, instead of a fixed file on
the sdcard.

Also fixed adb_interace.StartInstrumentationForPackage, added better handling
when generating coverage for tests with unknown coverage targets, and reduced
the duplicate definitions of the "coverage_targets.xml" definition file.

testrunner/adb_interface.py

@@ -157,8 +157,9 @@ class AdbInterface:
     separated into its package and runner components.
     """
     instrumentation_path = "%s/%s" % (package_name, runner_name)
-    return self.StartInstrumentation(self, instrumentation_path, timeout_time,
+    return self.StartInstrumentation(instrumentation_path, timeout_time=timeout_time,
-                                     no_window_animation, instrumentation_args)
+                                     no_window_animation=no_window_animation,
+                                     instrumentation_args=instrumentation_args)
 
   def StartInstrumentation(
       self, instrumentation_path, timeout_time=60*10, no_window_animation=False,
@@ -203,7 +204,7 @@ class AdbInterface:
         instrumentation_path, no_window_animation=no_window_animation,
         profile=profile, raw_mode=True,
         instrumentation_args=instrumentation_args)
-
+    logger.Log(command_string)
     (test_results, inst_finished_bundle) = (
         am_instrument_parser.ParseAmInstrumentOutput(
             self.SendShellCommand(command_string, timeout_time=timeout_time,
@@ -217,7 +218,7 @@ class AdbInterface:
       short_msg_result = "no error message"
       if "shortMsg" in inst_finished_bundle:
         short_msg_result = inst_finished_bundle["shortMsg"]
-        logger.Log(short_msg_result)
+        logger.Log("Error! Test run failed: %s" % short_msg_result)
       raise errors.InstrumentationError(short_msg_result)
 
     if "INSTRUMENTATION_ABORTED" in inst_finished_bundle:

testrunner/coverage.py

@@ -44,16 +44,15 @@ class CoverageGenerator(object):
     # path to EMMA host jar, relative to Android build root
   _EMMA_JAR = os.path.join(_EMMA_BUILD_PATH, "lib", "emma.jar")
   _TEST_COVERAGE_EXT = "ec"
-  # default device-side path to code coverage results file
-  _DEVICE_COVERAGE_PATH = "/sdcard/coverage.ec"
   # root path of generated coverage report files, relative to Android build root
   _COVERAGE_REPORT_PATH = os.path.join("out", "emma")
+  _TARGET_DEF_FILE = "coverage_targets.xml"
   _CORE_TARGET_PATH = os.path.join("development", "testrunner",
-                                   "coverage_targets.xml")
+                                   _TARGET_DEF_FILE)
   # vendor glob file path patterns to tests, relative to android
   # build root
   _VENDOR_TARGET_PATH = os.path.join("vendor", "*", "tests", "testinfo",
-                                     "coverage_targets.xml")
+                                     _TARGET_DEF_FILE)
 
   # path to root of target build intermediates
   _TARGET_INTERMEDIATES_BASE_PATH = os.path.join("out", "target", "common",
@@ -93,7 +92,7 @@ class CoverageGenerator(object):
       return False
 
   def ExtractReport(self, test_suite,
-                    device_coverage_path=_DEVICE_COVERAGE_PATH,
+                    device_coverage_path,
                     output_path=None):
     """Extract runtime coverage data and generate code coverage report.
 
@@ -122,8 +121,14 @@ class CoverageGenerator(object):
       report_path = os.path.join(output_path,
                                  test_suite.GetName())
       target = self._targets_manifest.GetTarget(test_suite.GetTargetName())
-      return self._GenerateReport(report_path, coverage_local_path, [target],
+      if target is None:
-                                  do_src=True)
+        msg = ["Error: test %s references undefined target %s."
+                % (test_suite.GetName(), test_suite.GetTargetName())]
+        msg.append(" Ensure target is defined in %s" % self._TARGET_DEF_FILE)
+        logger.Log("".join(msg))
+      else:
+        return self._GenerateReport(report_path, coverage_local_path, [target],
+                                    do_src=True)
     return None
 
   def _GenerateReport(self, report_path, coverage_file_path, targets,

testrunner/runtest.py

@@ -278,16 +278,53 @@ class TestRunner(object):
           raw_mode=self._options.raw_mode,
           instrumentation_args=instrumentation_args)
       logger.Log(adb_cmd)
+    elif self._options.coverage:
+      # need to parse test output to determine path to coverage file
+      logger.Log("Running in coverage mode, suppressing test output")
+      try:
+        (test_results, status_map) = self._adb.StartInstrumentationForPackage(
+          package_name=test_suite.GetPackageName(),
+          runner_name=test_suite.GetRunnerName(),
+          timeout_time=60*60,
+          instrumentation_args=instrumentation_args)
+      except errors.InstrumentationError, errors.DeviceUnresponsiveError:
+        return
+      self._PrintTestResults(test_results)
+      device_coverage_path = status_map.get("coverageFilePath", None)
+      if device_coverage_path is None:
+        logger.Log("Error: could not find coverage data on device")
+        return
+      coverage_file = self._coverage_gen.ExtractReport(test_suite, device_coverage_path)
+      if coverage_file is not None:
+        logger.Log("Coverage report generated at %s" % coverage_file)
     else:
       self._adb.StartInstrumentationNoResults(
           package_name=test_suite.GetPackageName(),
           runner_name=test_suite.GetRunnerName(),
           raw_mode=self._options.raw_mode,
           instrumentation_args=instrumentation_args)
-      if self._options.coverage and test_suite.GetTargetName() is not None:
+
-        coverage_file = self._coverage_gen.ExtractReport(test_suite)
+  def _PrintTestResults(self, test_results):
-        if coverage_file is not None:
+    """Prints a summary of test result data to stdout.
-          logger.Log("Coverage report generated at %s" % coverage_file)
+
+    Args:
+      test_results: a list of am_instrument_parser.TestResult
+    """
+    total_count = 0
+    error_count = 0
+    fail_count = 0
+    for test_result in test_results:
+      if test_result.GetStatusCode() == -1: # error
+        logger.Log("Error in %s: %s" % (test_result.GetTestName(),
+                                        test_result.GetFailureReason()))
+        error_count+=1
+      elif test_result.GetStatusCode() == -2: # failure
+        logger.Log("Failure in %s: %s" % (test_result.GetTestName(),
+                                          test_result.GetFailureReason()))
+        fail_count+=1
+      total_count+=1
+    logger.Log("Tests run: %d, Failures: %d, Errors: %d" %
+               (total_count, fail_count, error_count))
 
   def _CollectTestSources(self, test_list, dirname, files):
     """For each directory, find tests source file and add them to the list.