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Unified Diff: services/shape_detection/text_detection_impl_mac_unittest.mm

Issue 2726843006: ShapeDetection: add support for Text Detection in Mac (Closed)
Patch Set: offline reillyg@s comment on DCHECK location Created 3 years, 10 months ago
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Index: services/shape_detection/text_detection_impl_mac_unittest.mm
diff --git a/services/shape_detection/text_detection_impl_mac_unittest.mm b/services/shape_detection/text_detection_impl_mac_unittest.mm
new file mode 100644
index 0000000000000000000000000000000000000000..5333a5190b2d06180c810892d0f3c52803d09dfc
--- /dev/null
+++ b/services/shape_detection/text_detection_impl_mac_unittest.mm
@@ -0,0 +1,111 @@
+// Copyright 2017 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 "services/shape_detection/text_detection_impl_mac.h"
+
+#include "base/command_line.h"
+#include "base/mac/mac_util.h"
+#include "base/mac/scoped_cftyperef.h"
+#include "base/mac/scoped_nsobject.h"
+#include "base/mac/sdk_forward_declarations.h"
+#include "base/run_loop.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gl/gl_switches.h"
+
+namespace shape_detection {
+
+ACTION_P(RunClosure, closure) {
+ closure.Run();
+}
+
+class TextDetectionImplMacTest : public ::testing::Test {
+ public:
+ ~TextDetectionImplMacTest() override = default;
+
+ void DetectCallback(std::vector<mojom::TextDetectionResultPtr> results) {
+ // CIDetectorTypeText doesn't return the decoded text, juts bounding boxes.
+ Detection(results.size());
+ }
+ MOCK_METHOD1(Detection, void(size_t));
+
+ TextDetectionImplMac impl_;
+ const base::MessageLoop message_loop_;
+};
+
+TEST_F(TextDetectionImplMacTest, CreateAndDestroy) {}
+
+// This test generates an image with a single text line and scans it back.
+TEST_F(TextDetectionImplMacTest, ScanOnce) {
+ // Text detection needs at least MAC OS X 10.11, and GPU infrastructure.
+ if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
+ switches::kUseGpuInTests) ||
+ !base::mac::IsAtLeastOS10_11()) {
+ return;
+ }
+
+ base::ScopedCFTypeRef<CGColorSpaceRef> rgb_colorspace(
+ CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB));
+
+ const int width = 200;
+ const int height = 50;
+ base::ScopedCFTypeRef<CGContextRef> context(CGBitmapContextCreate(
+ nullptr, width, height, 8 /* bitsPerComponent */,
+ width * 4 /* rowBytes */, rgb_colorspace,
+ kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host));
+
+ // Draw a white background.
+ CGContextSetRGBFillColor(context, 1.0, 1.0, 1.0, 1.0);
+ CGContextFillRect(context, CGRectMake(0.0, 0.0, width, height));
+
+ // Create a line of Helvetica 16 text, and draw it in the |context|.
+ base::scoped_nsobject<NSFont> helvetica(
+ [NSFont fontWithName:@"Helvetica" size:16]);
+ NSDictionary* attributes = [NSDictionary
+ dictionaryWithObjectsAndKeys:helvetica, kCTFontAttributeName, nil];
+
+ base::scoped_nsobject<NSAttributedString> info([[NSAttributedString alloc]
+ initWithString:@"https://www.chromium.org"
+ attributes:attributes]);
+
+ base::ScopedCFTypeRef<CTLineRef> line(
+ CTLineCreateWithAttributedString((CFAttributedStringRef)info.get()));
+
+ CGContextSetTextPosition(context, 10.0, height / 2.0);
+ CTLineDraw(line, context);
+
+ // Extract a CGImage and its raw pixels from |context|.
+ base::ScopedCFTypeRef<CGImageRef> cg_image(
+ CGBitmapContextCreateImage(context));
+ EXPECT_EQ(static_cast<size_t>(width), CGImageGetWidth(cg_image));
+ EXPECT_EQ(static_cast<size_t>(height), CGImageGetHeight(cg_image));
+
+ base::ScopedCFTypeRef<CFDataRef> raw_cg_image_data(
+ CGDataProviderCopyData(CGImageGetDataProvider(cg_image)));
+ EXPECT_TRUE(CFDataGetBytePtr(raw_cg_image_data));
+ const int num_bytes = width * height * 4;
+ EXPECT_EQ(num_bytes, CFDataGetLength(raw_cg_image_data));
+
+ // Generate a new ScopedSharedBufferHandle of the aproppriate size, map it and
+ // copy the generated text image pixels into it.
+ auto handle = mojo::SharedBufferHandle::Create(num_bytes);
+ ASSERT_TRUE(handle->is_valid());
+
+ mojo::ScopedSharedBufferMapping mapping = handle->Map(num_bytes);
+ ASSERT_TRUE(mapping);
+
+ memcpy(mapping.get(), CFDataGetBytePtr(raw_cg_image_data), num_bytes);
+
+ base::RunLoop run_loop;
+ base::Closure quit_closure = run_loop.QuitClosure();
+ // Send the image to Detect() and expect the response in callback.
+ EXPECT_CALL(*this, Detection(1)).WillOnce(RunClosure(quit_closure));
+ impl_.Detect(std::move(handle), width, height,
+ base::Bind(&TextDetectionImplMacTest::DetectCallback,
+ base::Unretained(this)));
+
+ run_loop.Run();
+}
+
+} // shape_detection namespace

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