[Favicon] Adding FallbackIconUrlParser.

chrome/common/favicon/fallback_icon_url_parser_unittest.cc

Index: chrome/common/favicon/fallback_icon_url_parser_unittest.cc
diff --git a/chrome/common/favicon/fallback_icon_url_parser_unittest.cc b/chrome/common/favicon/fallback_icon_url_parser_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..76a761c0ae4e7c4cee699a1c88887051c9a6e872
--- /dev/null
+++ b/chrome/common/favicon/fallback_icon_url_parser_unittest.cc
@@ -0,0 +1,267 @@
+// Copyright 2015 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 "chrome/common/favicon/fallback_icon_url_parser.h"
+
+#include "base/memory/scoped_ptr.h"
+#include "components/favicon_base/fallback_icon_style.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/skia/include/core/SkColor.h"
+#include "ui/gfx/favicon_size.h"
+#include "url/gurl.h"
+
+using chrome::ParsedFallbackIconPath;
+using favicon_base::FallbackIconStyle;
+
+namespace chrome {
+
+namespace {
+
+// Default values for FallbackIconStyle, from
+// /components/favicon_base/fallback_icon_style.h
+SkColor kDefaultBackgroundColor = SkColorSetRGB(0x80, 0x80, 0x80);
+SkColor kDefaultTextColorDark = SK_ColorBLACK;
+SkColor kDefaultTextColorLight = SK_ColorWHITE;
+double kDefaultFontSizeRatio = 0.8;
+double kDefaultRoundness = 0.125;  // 1 / 8.
+
+const char kTestUrlStr[] = "https://www.google.ca/imghp?hl=en&tab=wi";
+
+}  // namespace
+
+class FallbackIconUrlParserTest : public testing::Test {
+ public:
+  FallbackIconUrlParserTest() {
+  }
+
+  bool ParseSpecs(const std::string& specs_str,
+                  int *size,
+                  favicon_base::FallbackIconStyle* style) {
+    return ParsedFallbackIconPath::ParseSpecs(specs_str, size, style);
+  }
+
+  bool ParseColor(const std::string& color_str, SkColor* color) {
+    int size_dummy;
+    favicon_base::FallbackIconStyle style;
+    std::string spec_str = "16," + color_str + ",,,";
+    if (!ParseSpecs(spec_str, &size_dummy, &style))
+      return false;
+    *color = style.background_color;
+    return true;
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(FallbackIconUrlParserTest);
+};
+
+TEST_F(FallbackIconUrlParserTest, ParseColorSuccess) {
+  SkColor c;
+  EXPECT_TRUE(ParseColor("#01aBf0f4", &c));
+  EXPECT_EQ(SkColorSetARGB(0x01, 0xAB, 0xF0, 0xF4), c);
+  EXPECT_TRUE(ParseColor("#01aBf0", &c));
+  EXPECT_EQ(SkColorSetRGB(0x01, 0xAB, 0xF0), c);
+  EXPECT_TRUE(ParseColor("#01a", &c));
+  EXPECT_EQ(SkColorSetRGB(0x00, 0x11, 0xAA), c);
+  EXPECT_TRUE(ParseColor("#000000", &c));
+  EXPECT_EQ(SkColorSetARGB(0xFF, 0x00, 0x00, 0x00), c);
+  EXPECT_TRUE(ParseColor("red", &c));
+  EXPECT_EQ(SkColorSetARGB(0xFF, 0xFF, 0x00, 0x00), c);
+}
+
+TEST_F(FallbackIconUrlParserTest, ParseColorFailure) {
+  const char* test_cases[] = {
+    "#00000",
+    "#000000000",
+    " #000000",
+    "#ABCDEFG",
+    "000000",
+    "#000000 ",
+  };
+  for (size_t i = 0; i < arraysize(test_cases); ++i) {
+    SkColor c;
+    EXPECT_FALSE(ParseColor(test_cases[i], &c))
+         << "test_cases[" << i << "]";
+  }
+}
+
+TEST_F(FallbackIconUrlParserTest, ParseSpecsEmpty) {
+  int size;
+  FallbackIconStyle style;
+  EXPECT_TRUE(ParseSpecs(",,,,", &size, &style));
+  EXPECT_EQ(16, size);
+  EXPECT_EQ(kDefaultBackgroundColor, style.background_color);
+  EXPECT_EQ(kDefaultTextColorLight, style.text_color);
+  EXPECT_EQ(kDefaultFontSizeRatio, style.font_size_ratio);
+  EXPECT_EQ(kDefaultRoundness, style.roundness);
+}
+
+TEST_F(FallbackIconUrlParserTest, ParseSpecsPartial) {
+  int size;
+  FallbackIconStyle style;
+  EXPECT_TRUE(ParseSpecs(",,#aCE,,0.1", &size, &style));
+  EXPECT_EQ(16, size);
+  EXPECT_EQ(kDefaultBackgroundColor, style.background_color);
+  EXPECT_EQ(SkColorSetRGB(0xAA, 0xCC, 0xEE), style.text_color);
+  EXPECT_EQ(kDefaultFontSizeRatio, style.font_size_ratio);
+  EXPECT_EQ(0.1, style.roundness);
+}
+
+TEST_F(FallbackIconUrlParserTest, ParseSpecsFull) {
+  int size;
+
+  {
+    FallbackIconStyle style;
+    EXPECT_TRUE(ParseSpecs("16,#000,#f01,0.75,0.25", &size, &style));
+    EXPECT_EQ(16, size);
+    EXPECT_EQ(SkColorSetRGB(0x00, 0x00, 0x00), style.background_color);
+    EXPECT_EQ(SkColorSetRGB(0xff, 0x00, 0x11), style.text_color);
+    EXPECT_EQ(0.75, style.font_size_ratio);
+    EXPECT_EQ(0.25, style.roundness);
+  }
+
+  {
+    FallbackIconStyle style;
+    EXPECT_TRUE(ParseSpecs("48,black,#123456,0.5,0.3", &size, &style));
+    EXPECT_EQ(48, size);
+    EXPECT_EQ(SkColorSetRGB(0x00, 0x00, 0x00), style.background_color);
+    EXPECT_EQ(SkColorSetRGB(0x12, 0x34, 0x56), style.text_color);
+    EXPECT_EQ(0.5, style.font_size_ratio);
+    EXPECT_EQ(0.3, style.roundness);
+  }
+
+  {
+    FallbackIconStyle style;
+    EXPECT_TRUE(ParseSpecs("1,#000,red,0,0", &size, &style));
+    EXPECT_EQ(1, size);
+    EXPECT_EQ(SkColorSetRGB(0x00, 0x00, 0x00), style.background_color);
+    EXPECT_EQ(SkColorSetRGB(0xFF, 0x00, 0x00), style.text_color);
+    EXPECT_EQ(0, style.font_size_ratio);
+    EXPECT_EQ(0, style.roundness);
+  }
+}
+
+TEST_F(FallbackIconUrlParserTest, ParseSpecsDefaultTextColor) {
+  int size;
+
+  {
+    // Dark background -> Light text.
+    FallbackIconStyle style;
+    EXPECT_TRUE(ParseSpecs(",#000,,,", &size, &style));
+    EXPECT_EQ(kDefaultTextColorLight, style.text_color);
+  }
+
+  {
+    // Light background -> Dark text.
+    FallbackIconStyle style;
+    EXPECT_TRUE(ParseSpecs(",#fff,,,", &size, &style));
+    EXPECT_EQ(kDefaultTextColorDark, style.text_color);
+  }
+
+  {
+    // Light background -> Dark text, more params don't matter.
+    FallbackIconStyle style;
+    EXPECT_TRUE(ParseSpecs("107,#fff,,0.3,0.5", &size, &style));
+    EXPECT_EQ(kDefaultTextColorDark, style.text_color);
+  }
+}
+
+TEST_F(FallbackIconUrlParserTest, ParseSpecsFailure) {
+  const char* test_cases[] = {
+    // Need exactly 5 params.
+    "",
+    "16",
+    "16,black",
+    "16,black,#fff",
+    "16,black,#fff,0.75",
+    ",,,"
+    ",,,,,",
+    "16,black,#fff,0.75,0.25,junk",
+    // Don't allow any space.
+    "16,black,#fff, 0.75,0.25",
+    "16,black ,#fff,0.75,0.25",
+    "16,black,#fff,0.75,0.25 ",
+    // Adding junk text.
+    "16,black,#fff,0.75,0.25junk",
+    "junk,black,#fff,0.75,0.25",
+    "16,#junk,#fff,0.75,0.25",
+    "16,black,#junk,0.75,0.25",
+    "16,black,#fff,junk,0.25",
+    "16,black,#fff,0.75,junk",
+    // Out of bound.
+    "0,black,#fff,0.75,0.25",  // size.
+    "4294967296,black,#fff,0.75,0.25",  // size.
+    "-1,black,#fff,0.75,0.25",  // size.
+    "16,black,#fff,-0.1,0.25",  // font_size_ratio.
+    "16,black,#fff,1.1,0.25",  // font_size_ratio.
+    "16,black,#fff,0.75,-0.1",  // roundness.
+    "16,black,#fff,0.75,1.1",  // roundness.
+  };
+  for (size_t i = 0; i < arraysize(test_cases); ++i) {
+    int size;
+    FallbackIconStyle style;
+    EXPECT_FALSE(ParseSpecs(test_cases[i], &size, &style))
+        << "test_cases[" << i << "]";
+
+  }
+}
+
+TEST_F(FallbackIconUrlParserTest, ParseFallbackIconPathSuccess) {
+  const std::string specs = "31,black,#fff,0.75,0.25";
+
+  // Everything populated.
+  {
+    chrome::ParsedFallbackIconPath parsed;
+    EXPECT_TRUE(parsed.Parse(specs + "/" + kTestUrlStr));
+    EXPECT_EQ(GURL(kTestUrlStr), parsed.url());
+    EXPECT_EQ(31, parsed.size_in_pixels());
+    const favicon_base::FallbackIconStyle& style = parsed.style();
+    EXPECT_EQ(SkColorSetRGB(0x00, 0x00, 0x00), style.background_color);
+    EXPECT_EQ(SkColorSetRGB(0xFF, 0xFF, 0xFF), style.text_color);
+    EXPECT_EQ(0.75, style.font_size_ratio);
+    EXPECT_EQ(0.25, style.roundness);
+  }
+
+  // Empty URL.
+  {
+    chrome::ParsedFallbackIconPath parsed;
+    EXPECT_TRUE(parsed.Parse(specs + "/"));
+    EXPECT_EQ(GURL(), parsed.url());
+    EXPECT_EQ(31, parsed.size_in_pixels());
+    const favicon_base::FallbackIconStyle& style = parsed.style();
+    EXPECT_EQ(SkColorSetRGB(0x00, 0x00, 0x00), style.background_color);
+    EXPECT_EQ(SkColorSetRGB(0xFF, 0xFF, 0xFF), style.text_color);
+    EXPECT_EQ(0.75, style.font_size_ratio);
+    EXPECT_EQ(0.25, style.roundness);
+  }
+
+  // Size and style are default.
+  {
+    chrome::ParsedFallbackIconPath parsed;
+    EXPECT_TRUE(parsed.Parse(std::string(",,,,/") + kTestUrlStr));
+    EXPECT_EQ(GURL(kTestUrlStr), parsed.url());
+    EXPECT_EQ(gfx::kFaviconSize, parsed.size_in_pixels());
+    const favicon_base::FallbackIconStyle& style = parsed.style();
+    EXPECT_EQ(kDefaultBackgroundColor, style.background_color);
+    EXPECT_EQ(kDefaultTextColorLight, style.text_color);
+    EXPECT_EQ(kDefaultFontSizeRatio, style.font_size_ratio);
+    EXPECT_EQ(kDefaultRoundness, style.roundness);
+  }
+}
+
+TEST_F(FallbackIconUrlParserTest, ParseFallbackIconPathFailure) {
+  const char* test_cases[] = {
+    // Bad size.
+    "-1,#000,#fff,0.75,0.25/http://www.google.com/",
+    // Bad specs.
+    "32,#junk,#fff,0.75,0.25/http://www.google.com/",
+    // Bad URL.
+    "32,#000,#fff,0.75,0.25/NOT A VALID URL",
+  };
+  for (size_t i = 0; i < arraysize(test_cases); ++i) {
+    chrome::ParsedFallbackIconPath parsed;
+    EXPECT_FALSE(parsed.Parse(test_cases[i])) << "test_cases[" << i << "]";
+  }
+}
+
+}  // namespace chrome