Add directory option for JUnit coverage files.

Added runtime option --coverage-dir to let the users decide where to
store coverage.ec.

BUG=608072

Review-Url: https://codereview.chromium.org/1965013008
Cr-Original-Commit-Position: refs/heads/master@{#394470}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: e16476a8c069b9646370f75d71cad6cdc9c491e8

android/gyp/create_java_binary_script.py

@@ -25,6 +25,7 @@ script_template = """\
 #
 # This file was generated by build/android/gyp/create_java_binary_script.py
 
+import argparse
 import os
 import sys
 
@@ -37,13 +38,29 @@ if os.getcwd() != self_dir:
   classpath = [os.path.join(offset, p) for p in classpath]
   bootclasspath = [os.path.join(offset, p) for p in bootclasspath]
 java_cmd = ["java"]
+# This is a simple argparser for jvm and jar arguments.
+parser = argparse.ArgumentParser()
+parser.add_argument('--jar-args')
+parser.add_argument('--jvm-args')
+
+known_args, unknown_args = parser.parse_known_args(sys.argv[1:])
+if known_args.jvm_args:
+  jvm_arguments = known_args.jvm_args.strip('"').split()
+  java_cmd.extend(jvm_arguments)
+if known_args.jar_args:
+  jar_arguments = known_args.jar_args.strip('"').split()
+  if unknown_args:
+    raise Exception('There are unknown arguments')
+else:
+  jar_arguments = unknown_args
+
 {noverify_flag}
 if bootclasspath:
     java_cmd.append("-Xbootclasspath/p:" + ":".join(bootclasspath))
 java_cmd.extend(
     ["-classpath", ":".join(classpath), "-enableassertions", \"{main_class}\"])
 java_cmd.extend(extra_program_args)
-java_cmd.extend(sys.argv[1:])
+java_cmd.extend(jar_arguments)
 os.execvp("java", java_cmd)
 """
 

android/pylib/junit/test_runner.py

@@ -14,6 +14,7 @@ class JavaTestRunner(object):
   """Runs java tests on the host."""
 
   def __init__(self, args):
+    self._coverage_dir = args.coverage_dir
     self._package_filter = args.package_filter
     self._runner_filter = args.runner_filter
     self._sdk_version = args.sdk_version
@@ -28,17 +29,28 @@ class JavaTestRunner(object):
     with tempfile.NamedTemporaryFile() as json_file:
       java_script = os.path.join(
           constants.GetOutDirectory(), 'bin', 'helper', self._test_suite)
-      command = [java_script,
-                 '-test-jars', self._test_suite + '.jar',
-                 '-json-results-file', json_file.name]
+      command = [java_script]
+
+      # Add Jar arguments.
+      jar_args = ['-test-jars', self._test_suite + '.jar',
+              '-json-results-file', json_file.name]
       if self._test_filter:
-        command.extend(['-gtest-filter', self._test_filter])
+        jar_args.extend(['-gtest-filter', self._test_filter])
       if self._package_filter:
-        command.extend(['-package-filter', self._package_filter])
+        jar_args.extend(['-package-filter', self._package_filter])
       if self._runner_filter:
-        command.extend(['-runner-filter', self._runner_filter])
+        jar_args.extend(['-runner-filter', self._runner_filter])
       if self._sdk_version:
-        command.extend(['-sdk-version', self._sdk_version])
+        jar_args.extend(['-sdk-version', self._sdk_version])
+      command.extend(['--jar-args', '"%s"' % ' '.join(jar_args)])
+
+      # Add JVM arguments.
+      jvm_args = []
+      if self._coverage_dir:
+        jvm_args.append('-Demma.coverage.out.file=%s' % self._coverage_dir)
+      if jvm_args:
+        command.extend(['--jvm-args', '"%s"' % ' '.join(jvm_args)])
+
       return_code = cmd_helper.RunCmd(command)
       results_list = json_results.ParseResultsFromJson(
           json.loads(json_file.read()))

android/test_runner.py

@@ -459,6 +459,9 @@ def AddJUnitTestOptions(parser):
   group.add_argument(
       '--sdk-version', dest='sdk_version', type=int,
       help='The Android SDK version.')
+  group.add_argument(
+      '--coverage-dir', dest='coverage_dir',
+      help='Directory to store coverage info.')
   AddCommonOptions(parser)