Shape detection: moar content_browsertests (face, qr/barcode)

content/browser/shape_detection/shape_detection_browsertest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/command_line.h"
 #include "base/strings/string_tokenizer.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/browser_test_utils.h"
 #include "content/public/test/content_browser_test.h"
 #include "content/public/test/content_browser_test_utils.h"
+#include "ui/gl/gl_switches.h"
+
+using base::CommandLine;
 
 namespace content {
 
-// TODO(xianglu): Enable other platforms support. https://crbug.com/646083
-#if defined(OS_ANDROID)
-#define MAYBE_ShapeDetectionBrowserTest ShapeDetectionBrowserTest
-#else
-#define MAYBE_ShapeDetectionBrowserTest DISABLED_ShapeDetectionBrowserTest
-#endif
-
 namespace {
 
-const char kFaceDetectionTestHtml[] = "/media/face_detection_test.html";
+const char kShapeDetectionTestHtml[] = "/media/shape_detection_test.html";
+
+struct TestParameters {
+  const std::string detector_name;
+  const std::string image_path;
+  const std::vector<std::vector<float>>& expected_bounding_boxes;
+} const kTestParameters[] = {
+    {"FaceDetector", "/blank.jpg", {}},
+    {"FaceDetector",
+     "/single_face.jpg",
+#if defined(OS_ANDROID)
+     {{23, 20, 42, 42}}
+#else
+     {{23, 26, 42, 42}}
+#endif
+    },
+};
+
+std::ostream& operator<<(std::ostream& out,
+                         const struct TestParameters& parameters) {
+  out << parameters.detector_name << " running on: " << parameters.image_path;
+  return out;
+}
 
 }  // namespace
 
 // This class contains content_browsertests for Shape Detection API, which
-// allows for generating bounding boxes in still images.
-class MAYBE_ShapeDetectionBrowserTest : public ContentBrowserTest {
+// detect features (Faces, QR/Barcodes, etc) in still or moving images.
+class ShapeDetectionBrowserTest
+    : public ContentBrowserTest,
+      public ::testing::WithParamInterface<struct TestParameters> {
  public:
   void SetUpCommandLine(base::CommandLine* command_line) override {
-    // Flag to enable ShapeDetection and DOMRect API.
-    base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
+    // Flags to enable ShapeDetection and DOMRect API.
+    CommandLine::ForCurrentProcess()->AppendSwitchASCII(
         switches::kEnableBlinkFeatures, "ShapeDetection, GeometryInterfaces");
   }
 
  protected:
-  void RunDetectFacesOnImageUrl(
+  void RunDetectShapesOnImage(
+      const std::string& detector_name,
       const std::string& image_path,
-      const std::vector<std::vector<float>>& expected_results) {
+      const std::vector<std::vector<float>>& expected_bounding_boxes) {
     ASSERT_TRUE(embedded_test_server()->Start());
 
-    const GURL html_url(embedded_test_server()->GetURL(kFaceDetectionTestHtml));
+    const GURL html_url(
+        embedded_test_server()->GetURL(kShapeDetectionTestHtml));
     const GURL image_url(embedded_test_server()->GetURL(image_path));
     NavigateToURL(shell(), html_url);
-    const std::string js_command =
-        "detectFacesOnImageUrl('" + image_url.spec() + "')";
+    const std::string js_command = "detectShapesOnImageUrl('" + detector_name +
+                                   "', '" + image_url.spec() + "')";
     std::string response_string;
     ASSERT_TRUE(
         ExecuteScriptAndExtractString(shell(), js_command, &response_string));
 
     base::StringTokenizer outer_tokenizer(response_string, "#");
-    std::vector<std::vector<float>> results;
+    std::vector<std::vector<float>> detected_bounding_boxes = {};

[Reilly Grant (use Gerrit), 2017/02/28 00:35:11]

Why initialize this with {}?

[mcasas, 2017/02/28 18:10:18]

Because if the loop in l.76 is not executed
at all (empty |response_string|) then the
comparison of l.85 would fail against the
expectation in l.26.

[Reilly Grant (use Gerrit), 2017/02/28 18:49:13]

As discussed offline this doesn't make sense to me.

[mcasas, 2017/02/28 21:06:57]

Removed.

     while (outer_tokenizer.GetNext()) {
       std::string s = outer_tokenizer.token().c_str();
-      std::vector<float> res;
+      std::vector<float> bounding_box;
       base::StringTokenizer inner_tokenizer(s, ",");
       while (inner_tokenizer.GetNext())
-        res.push_back(atof(inner_tokenizer.token().c_str()));
-      results.push_back(res);
+        bounding_box.push_back(atof(inner_tokenizer.token().c_str()));
+      detected_bounding_boxes.push_back(bounding_box);
     }
 
-    ASSERT_EQ(expected_results.size(), results.size()) << "Number of faces";
-    for (size_t face_id = 0; face_id < results.size(); ++face_id) {
-      const std::vector<float> expected_result = expected_results[face_id];
-      const std::vector<float> result = results[face_id];
-      for (size_t i = 0; i < 4; ++i)
-        EXPECT_NEAR(expected_result[i], result[i], 2) << "At index " << i;
+    ASSERT_EQ(expected_bounding_boxes.size(), detected_bounding_boxes.size());
+    for (size_t shape_id = 0; shape_id < detected_bounding_boxes.size();
+         ++shape_id) {
+      const auto expected_bounding_box = expected_bounding_boxes[shape_id];
+      const auto detected_bounding_box = detected_bounding_boxes[shape_id];
+      for (size_t i = 0; i < 4; ++i) {
+        EXPECT_NEAR(expected_bounding_box[i], detected_bounding_box[i], 2)
+            << ", index " << i;
+      }
     }
   }
 };
 
-IN_PROC_BROWSER_TEST_F(MAYBE_ShapeDetectionBrowserTest,
-                       DetectFacesOnImageWithNoFaces) {
-  const std::string image_path = "/blank.jpg";
-  const std::vector<std::vector<float>> expected_empty_results;
-  RunDetectFacesOnImageUrl(image_path, expected_empty_results);
+// TODO(xianglu): Enable the test on other platforms. https://crbug.com/659138

[Reilly Grant (use Gerrit), 2017/02/28 00:35:11]

nit: TODO(https://crbug.com/659138)

[mcasas, 2017/02/28 18:10:18]

Done.

+#if defined(OS_ANDROID) || defined(OS_MACOSX)
+#define MAYBE_DetectShapesInImage DetectShapesInImage
+#else
+#define MAYBE_DetectShapesInImage DISABLED_DetectShapesInImage
+#endif
+
+IN_PROC_BROWSER_TEST_P(ShapeDetectionBrowserTest, MAYBE_DetectShapesInImage) {
+  // Face detection needs GPU infrastructure.
+  if (!CommandLine::ForCurrentProcess()->HasSwitch(switches::kUseGpuInTests))
+    return;
+
+  RunDetectShapesOnImage(GetParam().detector_name, GetParam().image_path,
+                         GetParam().expected_bounding_boxes);
 }
 
-IN_PROC_BROWSER_TEST_F(MAYBE_ShapeDetectionBrowserTest,
-                       DetectFacesOnImageWithOneFace) {
-  const std::string image_path = "/single_face.jpg";
-#if defined(OS_ANDROID)
-  const std::vector<std::vector<float>> expected_results{
-      {68.640625, 102.96875, 171.5625, 171.5625}};
-#else
-  const std::vector<std::vector<float>> expected_results;
-#endif
-
-  RunDetectFacesOnImageUrl(image_path, expected_results);
-}
+INSTANTIATE_TEST_CASE_P(,
+                        ShapeDetectionBrowserTest,
+                        testing::ValuesIn(kTestParameters));
 
 }  // namespace content