Merge "Make auto_gen_test_config available to Bazel." into main
diff --git a/tools/Android.bp b/tools/Android.bp
index bea0602..b8ab162 100644
--- a/tools/Android.bp
+++ b/tools/Android.bp
@@ -82,3 +82,17 @@
       }
     }
 }
+
+python_test_host {
+    name: "auto_gen_test_config_test",
+    main: "auto_gen_test_config_test.py",
+    srcs: [
+        "auto_gen_test_config.py",
+        "auto_gen_test_config_test.py",
+    ],
+    auto_gen_config: true,
+    test_suites: ["general-tests"],
+    test_options: {
+        unit_test: true,
+    },
+}
diff --git a/tools/BUILD.bazel b/tools/BUILD.bazel
index 2dbb585..9ec0dce 100644
--- a/tools/BUILD.bazel
+++ b/tools/BUILD.bazel
@@ -26,3 +26,10 @@
     python_version = "PY3",
     visibility = ["//visibility:public"],
 )
+
+py_binary(
+    name = "auto_gen_test_config",
+    srcs = ["auto_gen_test_config.py"],
+    python_version = "PY3",
+    visibility = ["//visibility:public"],
+)
diff --git a/tools/auto_gen_test_config.py b/tools/auto_gen_test_config.py
index ce64160..0bf47c6 100755
--- a/tools/auto_gen_test_config.py
+++ b/tools/auto_gen_test_config.py
@@ -17,6 +17,7 @@
 """A tool to generate TradeFed test config file.
 """
 
+import re
 import os
 import shutil
 import sys
@@ -44,9 +45,9 @@
   """
   if len(argv) != 4 and len(argv) != 6:
     sys.stderr.write(
-        'Invalid arguments. The script requires 4 arguments for file paths: '
-        'target_config android_manifest empty_config '
-        'instrumentation_test_config_template '
+        f'Invalid arguments: {argv}. The script requires 4 arguments for file paths: '
+        'target_config, android_manifest (or the xmltree dump), empty_config, '
+        'instrumentation_test_config_template, '
         'and 2 optional arguments for extra configs: '
         '--extra-configs \'EXTRA_CONFIGS\'.\n')
     return 1
@@ -57,27 +58,62 @@
   instrumentation_test_config_template = argv[3]
   extra_configs = '\n'.join(argv[5].split('\\n')) if len(argv) == 6 else ''
 
-  manifest = parse(android_manifest)
-  instrumentation_elements = manifest.getElementsByTagName('instrumentation')
-  manifest_elements = manifest.getElementsByTagName('manifest')
-  if len(instrumentation_elements) != 1 or len(manifest_elements) != 1:
-    # Failed to locate instrumentation or manifest element in AndroidManifest.
-    # file. Empty test config file will be created.
-    shutil.copyfile(empty_config, target_config)
-    return 0
-
   module = os.path.splitext(os.path.basename(target_config))[0]
-  instrumentation = instrumentation_elements[0]
-  manifest = manifest_elements[0]
-  if ATTRIBUTE_LABEL in instrumentation.attributes:
-    label = instrumentation.attributes[ATTRIBUTE_LABEL].value
-  else:
+
+  # If the AndroidManifest.xml is not available, but the APK is, this tool also
+  # accepts the output of `aapt2 dump xmltree <apk> AndroidManifest.xml` written
+  # into a file. This is a custom structured aapt2 output - not raw XML!
+  if android_manifest.endswith(".xmltree"):
     label = module
-  runner = instrumentation.attributes[ATTRIBUTE_RUNNER].value
-  package = manifest.attributes[ATTRIBUTE_PACKAGE].value
+    with open(android_manifest, encoding="utf-8") as manifest:
+      # e.g. A: package="android.test.example.helloworld" (Raw: "android.test.example.helloworld")
+      #                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+      pattern = re.compile(r"\(Raw:\s\"(.*)\"\)$")
+      curr_element = None
+      for line in manifest.readlines():
+        curr_line = line.strip()
+        if curr_line.startswith("E:"):
+          # e.g. "E: instrumentation (line=9)"
+          #          ^^^^^^^^^^^^^^^
+          curr_element = curr_line.split(" ")[1]
+        if curr_element == "instrumentation":
+          if ATTRIBUTE_RUNNER in curr_line:
+            runner =  re.findall(pattern, curr_line)[0]
+          if ATTRIBUTE_LABEL in curr_line:
+            label = re.findall(pattern, curr_line)[0]
+        if curr_element == "manifest":
+          if ATTRIBUTE_PACKAGE in curr_line:
+            package = re.findall(pattern, curr_line)[0]
+
+    if not (runner and label and package):
+      # Failed to locate instrumentation or manifest element in AndroidManifest.
+      # file. Empty test config file will be created.
+      shutil.copyfile(empty_config, target_config)
+      return 0
+
+  else:
+    # If the AndroidManifest.xml file is directly available, read it as an XML file.
+    manifest = parse(android_manifest)
+    instrumentation_elements = manifest.getElementsByTagName('instrumentation')
+    manifest_elements = manifest.getElementsByTagName('manifest')
+    if len(instrumentation_elements) != 1 or len(manifest_elements) != 1:
+      # Failed to locate instrumentation or manifest element in AndroidManifest.
+      # file. Empty test config file will be created.
+      shutil.copyfile(empty_config, target_config)
+      return 0
+
+    instrumentation = instrumentation_elements[0]
+    manifest = manifest_elements[0]
+    if ATTRIBUTE_LABEL in instrumentation.attributes:
+      label = instrumentation.attributes[ATTRIBUTE_LABEL].value
+    else:
+      label = module
+    runner = instrumentation.attributes[ATTRIBUTE_RUNNER].value
+    package = manifest.attributes[ATTRIBUTE_PACKAGE].value
+
   test_type = ('InstrumentationTest'
-               if runner.endswith('.InstrumentationTestRunner')
-               else 'AndroidJUnitTest')
+              if runner.endswith('.InstrumentationTestRunner')
+              else 'AndroidJUnitTest')
 
   with open(instrumentation_test_config_template) as template:
     config = template.read()
diff --git a/tools/auto_gen_test_config_test.py b/tools/auto_gen_test_config_test.py
index 51a8583..ce97723 100644
--- a/tools/auto_gen_test_config_test.py
+++ b/tools/auto_gen_test_config_test.py
@@ -30,6 +30,24 @@
 </manifest>
 """
 
+XMLTREE_JUNIT_TEST = """N: android=http://schemas.android.com/apk/res/android (line=2)
+  E: manifest (line=2)
+    A: package="com.android.my.tests.x" (Raw: "com.android.my.tests.x")
+      E: instrumentation (line=9)
+        A: http://schemas.android.com/apk/res/android:label(0x01010001)="TestModule" (Raw: "TestModule")
+        A: http://schemas.android.com/apk/res/android:name(0x01010003)="androidx.test.runner.AndroidJUnitRunner" (Raw: "androidx.test.runner.AndroidJUnitRunner")
+        A: http://schemas.android.com/apk/res/android:targetPackage(0x01010021)="com.android.my.tests" (Raw: "com.android.my.tests")
+"""
+
+XMLTREE_INSTRUMENTATION_TEST = """N: android=http://schemas.android.com/apk/res/android (line=2)
+  E: manifest (line=2)
+    A: package="com.android.my.tests.x" (Raw: "com.android.my.tests.x")
+      E: instrumentation (line=9)
+        A: http://schemas.android.com/apk/res/android:label(0x01010001)="TestModule" (Raw: "TestModule")
+        A: http://schemas.android.com/apk/res/android:name(0x01010003)="android.test.InstrumentationTestRunner" (Raw: "android.test.InstrumentationTestRunner")
+        A: http://schemas.android.com/apk/res/android:targetPackage(0x01010021)="com.android.my.tests" (Raw: "com.android.my.tests")
+"""
+
 MANIFEST_JUNIT_TEST = """<?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
   package="com.android.my.tests.x">
@@ -45,12 +63,12 @@
     <instrumentation
         android:name="android.test.InstrumentationTestRunner"
         android:targetPackage="com.android.my.tests"
-        android:label="My Tests" />
+        android:label="TestModule" />
 </manifest>
 """
 
 EXPECTED_JUNIT_TEST_CONFIG = """<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2017 The Android Open Source Project
+<!-- Copyright (C) 2023 The Android Open Source Project
 
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
@@ -66,19 +84,23 @@
 -->
 <!-- This test config file is auto-generated. -->
 <configuration description="Runs TestModule.">
+    <option name="test-suite-tag" value="apct" />
+    <option name="test-suite-tag" value="apct-instrumentation" />
+
     <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
+        <option name="cleanup-apks" value="true" />
         <option name="test-file-name" value="TestModule.apk" />
     </target_preparer>
 
     <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
-        <option name="package" value="com.android.my.tests.x" />
+        {EXTRA_TEST_RUNNER_CONFIGS}<option name="package" value="com.android.my.tests.x" />
         <option name="runner" value="androidx.test.runner.AndroidJUnitRunner" />
     </test>
 </configuration>
 """
 
 EXPECTED_INSTRUMENTATION_TEST_CONFIG = """<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2017 The Android Open Source Project
+<!-- Copyright (C) 2023 The Android Open Source Project
 
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
@@ -93,23 +115,74 @@
      limitations under the License.
 -->
 <!-- This test config file is auto-generated. -->
-<configuration description="Runs My Tests.">
+<configuration description="Runs TestModule.">
+    <option name="test-suite-tag" value="apct" />
+    <option name="test-suite-tag" value="apct-instrumentation" />
+
     <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
+        <option name="cleanup-apks" value="true" />
         <option name="test-file-name" value="TestModule.apk" />
     </target_preparer>
 
     <test class="com.android.tradefed.testtype.InstrumentationTest" >
-        <option name="package" value="com.android.my.tests.x" />
+        {EXTRA_TEST_RUNNER_CONFIGS}<option name="package" value="com.android.my.tests.x" />
         <option name="runner" value="android.test.InstrumentationTestRunner" />
     </test>
 </configuration>
 """
 
-TOOLS_DIR = os.path.dirname(os.path.dirname(__file__))
-EMPTY_TEST_CONFIG = os.path.join(
-    TOOLS_DIR, '..', 'core', 'empty_test_config.xml')
-INSTRUMENTATION_TEST_CONFIG_TEMPLATE = os.path.join(
-    TOOLS_DIR, '..', 'core', 'instrumentation_test_config_template.xml')
+EMPTY_TEST_CONFIG_CONTENT = """<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2017 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<!-- No AndroidTest.xml was provided and the manifest does not include
+     instrumentation, hence this apk is not instrumentable.
+-->
+<configuration description="Empty Configuration" />
+"""
+
+INSTRUMENTATION_TEST_CONFIG_TEMPLATE_CONTENT = """<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2023 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<!-- This test config file is auto-generated. -->
+<configuration description="Runs {LABEL}.">
+    <option name="test-suite-tag" value="apct" />
+    <option name="test-suite-tag" value="apct-instrumentation" />
+{EXTRA_CONFIGS}
+    <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
+        <option name="cleanup-apks" value="true" />
+        <option name="test-file-name" value="{MODULE}.apk" />
+    </target_preparer>
+
+    <test class="com.android.tradefed.testtype.{TEST_TYPE}" >
+        {EXTRA_TEST_RUNNER_CONFIGS}<option name="package" value="{PACKAGE}" />
+        <option name="runner" value="{RUNNER}" />
+    </test>
+</configuration>
+"""
 
 
 class AutoGenTestConfigUnittests(unittest.TestCase):
@@ -120,6 +193,16 @@
     self.test_dir = tempfile.mkdtemp()
     self.config_file = os.path.join(self.test_dir, TEST_MODULE + '.config')
     self.manifest_file = os.path.join(self.test_dir, 'AndroidManifest.xml')
+    self.xmltree_file = os.path.join(self.test_dir, TEST_MODULE + '.xmltree')
+    self.empty_test_config_file = os.path.join(self.test_dir, 'empty.config')
+    self.instrumentation_test_config_template_file = os.path.join(
+        self.test_dir, 'instrumentation.config')
+
+    with open(self.empty_test_config_file, 'w') as f:
+      f.write(EMPTY_TEST_CONFIG_CONTENT)
+
+    with open(self.instrumentation_test_config_template_file, 'w') as f:
+      f.write(INSTRUMENTATION_TEST_CONFIG_TEMPLATE_CONTENT)
 
   def tearDown(self):
     """Cleanup the test directory."""
@@ -133,11 +216,11 @@
 
     argv = [self.config_file,
             self.manifest_file,
-            EMPTY_TEST_CONFIG,
-            INSTRUMENTATION_TEST_CONFIG_TEMPLATE]
+            self.empty_test_config_file,
+            self.instrumentation_test_config_template_file]
     auto_gen_test_config.main(argv)
     with open(self.config_file) as config_file:
-      with open(EMPTY_TEST_CONFIG) as empty_config:
+      with open(self.empty_test_config_file) as empty_config:
         self.assertEqual(config_file.read(), empty_config.read())
 
   def testCreateJUnitTestConfig(self):
@@ -148,8 +231,8 @@
 
     argv = [self.config_file,
             self.manifest_file,
-            EMPTY_TEST_CONFIG,
-            INSTRUMENTATION_TEST_CONFIG_TEMPLATE]
+            self.empty_test_config_file,
+            self.instrumentation_test_config_template_file]
     auto_gen_test_config.main(argv)
     with open(self.config_file) as config_file:
       self.assertEqual(config_file.read(), EXPECTED_JUNIT_TEST_CONFIG)
@@ -162,8 +245,37 @@
 
     argv = [self.config_file,
             self.manifest_file,
-            EMPTY_TEST_CONFIG,
-            INSTRUMENTATION_TEST_CONFIG_TEMPLATE]
+            self.empty_test_config_file,
+            self.instrumentation_test_config_template_file]
+    auto_gen_test_config.main(argv)
+    with open(self.config_file) as config_file:
+      self.assertEqual(
+          config_file.read(), EXPECTED_INSTRUMENTATION_TEST_CONFIG)
+
+  def testCreateJUnitTestConfigWithXMLTree(self):
+    """Test creating test config for AndroidJUnitTest.
+    """
+    with open(self.xmltree_file, 'w') as f:
+      f.write(XMLTREE_JUNIT_TEST)
+
+    argv = [self.config_file,
+            self.xmltree_file,
+            self.empty_test_config_file,
+            self.instrumentation_test_config_template_file]
+    auto_gen_test_config.main(argv)
+    with open(self.config_file) as config_file:
+      self.assertEqual(config_file.read(), EXPECTED_JUNIT_TEST_CONFIG)
+
+  def testCreateInstrumentationTestConfigWithXMLTree(self):
+    """Test creating test config for InstrumentationTest.
+    """
+    with open(self.xmltree_file, 'w') as f:
+      f.write(XMLTREE_INSTRUMENTATION_TEST)
+
+    argv = [self.config_file,
+            self.xmltree_file,
+            self.empty_test_config_file,
+            self.instrumentation_test_config_template_file]
     auto_gen_test_config.main(argv)
     with open(self.config_file) as config_file:
       self.assertEqual(