APM QA unit tests, fake POLQA binary and minor fixes

webrtc/modules/audio_processing/test/py_quality_assessment/BUILD.gn

 # Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("../../../../webrtc.gni")
 
-copy("py_quality_assessment") {
+group("py_quality_assessment") {
+  testonly = true
+  deps = [
+    ":scripts",
+    ":unit_tests",
+  ]
+}
+
+copy("scripts") {
   testonly = true
   sources = [
     "README.md",
     "apm_quality_assessment.py",
     "apm_quality_assessment.sh",
     "apm_quality_assessment_export.py",
     "apm_quality_assessment_gencfgs.py",
-    "apm_quality_assessment_unittest.py",
   ]
   outputs = [
     "$root_build_dir/py_quality_assessment/{{source_file_part}}",
   ]
   deps = [
     ":apm_configs",
     ":lib",
     ":output",
     "../..:audioproc_f",
     "//resources/audio_processing/test/py_quality_assessment:probing_signals",
   ]
-}  # py_quality_assessment
+}
+
+copy("apm_configs") {
+  testonly = true
+  sources = [
+    "apm_configs/default.json",
+  ]
+  visibility = [ ":*" ]  # Only targets in this file can depend on this.
+  outputs = [
+    "$root_build_dir/py_quality_assessment/apm_configs/{{source_file_part}}",
+  ]
+}  # apm_configs
 
 copy("lib") {
   testonly = true
   sources = [
     "quality_assessment/__init__.py",
     "quality_assessment/audioproc_wrapper.py",
     "quality_assessment/data_access.py",
     "quality_assessment/eval_scores.py",
     "quality_assessment/eval_scores_factory.py",
-    "quality_assessment/eval_scores_unittest.py",
     "quality_assessment/evaluation.py",
     "quality_assessment/exceptions.py",
     "quality_assessment/export.py",
     "quality_assessment/results.css",
     "quality_assessment/results.js",
     "quality_assessment/signal_processing.py",
-    "quality_assessment/signal_processing_unittest.py",
     "quality_assessment/simulation.py",
     "quality_assessment/test_data_generation.py",
     "quality_assessment/test_data_generation_factory.py",
-    "quality_assessment/test_data_generation_unittest.py",
   ]
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
   outputs = [
     "$root_build_dir/py_quality_assessment/quality_assessment/{{source_file_part}}",
   ]
   deps = [
     "//resources/audio_processing/test/py_quality_assessment:noise_tracks",
   ]
-}  # lib
-
-copy("apm_configs") {
-  testonly = true
-  sources = [
-    "apm_configs/default.json",
-  ]
-  visibility = [ ":*" ]  # Only targets in this file can depend on this.
-  outputs = [
-    "$root_build_dir/py_quality_assessment/apm_configs/{{source_file_part}}",
-  ]
-}  # apm_configs
+}
 
 copy("output") {
   testonly = true
   sources = [
     "output/README.md",
   ]
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
   outputs = [
     "$root_build_dir/py_quality_assessment/output/{{source_file_part}}",
   ]
-}  # output
+}
+
+group("unit_tests") {
+  testonly = true
+  visibility = [ ":*" ]  # Only targets in this file can depend on this.
+  deps = [
+    ":fake_polqa",
+    ":lib_unit_tests",
+    ":scripts_unit_tests",
+  ]
+}
+
+rtc_executable("fake_polqa") {
+  testonly = true
+  sources = [
+    "quality_assessment/fake_polqa.cc",
+  ]
+  visibility = [ ":*" ]  # Only targets in this file can depend on this.
+  output_name = "py_quality_assessment/quality_assessment/fake_polqa"
+  deps = [
+    "//webrtc:webrtc_common",
+    "//webrtc/base:rtc_base_approved",
+  ]
+}
+
+copy("lib_unit_tests") {
+  testonly = true
+  sources = [
+    "quality_assessment/eval_scores_unittest.py",
+    "quality_assessment/signal_processing_unittest.py",
+    "quality_assessment/simulation_unittest.py",
+    "quality_assessment/test_data_generation_unittest.py",
+  ]
+  visibility = [ ":*" ]  # Only targets in this file can depend on this.
+  outputs = [
+    "$root_build_dir/py_quality_assessment/quality_assessment/{{source_file_part}}",
+  ]
+}
+
+copy("scripts_unit_tests") {
+  testonly = true
+  sources = [
+    "apm_quality_assessment_unittest.py",
+  ]
+  visibility = [ ":*" ]  # Only targets in this file can depend on this.
+  outputs = [
+    "$root_build_dir/py_quality_assessment/{{source_file_part}}",
+  ]
+}