[Favicon] Adding FallbackIconUrlParser.

chrome/common/favicon/fallback_icon_url_parser_unittest.cc

+// 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"
+
+using favicon_base::FallbackIconStyle;
+
+namespace {
+
+// Default values for FallbackIconStyle, from
+// /components/favicon_base/favicon_types.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 kTestUrl[] = "https://www.google.ca/imghp?hl=en&tab=wi";
+
+}  // namespace
+
+namespace chrome {
+
+TEST(FallbackIconUrlParserTest, ParseIconColorSuccess) {
+  SkColor c;
+  EXPECT_TRUE(ParseIconColor("01aBf0f4", &c));
+  EXPECT_EQ(SkColorSetARGB(0xF4, 0x01, 0xAB, 0xF0), c);
+  EXPECT_TRUE(ParseIconColor("01aBf0", &c));
+  EXPECT_EQ(SkColorSetRGB(0x01, 0xAB, 0xF0), c);
+  EXPECT_TRUE(ParseIconColor("01a", &c));
+  EXPECT_EQ(SkColorSetRGB(0x00, 0x11, 0xAA), c);
+  EXPECT_TRUE(ParseIconColor("000000", &c));
+  EXPECT_EQ(SkColorSetARGB(0xFF, 0x00, 0x00, 0x00), c);
+}
+
+TEST(FallbackIconUrlParserTest, ParseIconColorFailure) {
+  const char* test_cases[] = {
+    "",
+    "00000",
+    "000000000",
+    "0 1 2 3 ",
+    " 0 1 2 3",
+    "0ABCDEFG",
+    "#000000",
+    "000000 ",
+    "red"
+  };
+  for (size_t i = 0; i < arraysize(test_cases); ++i) {
+    SkColor c;
+    EXPECT_FALSE(ParseIconColor(test_cases[i], &c))
+         << "test_cases[" << i << "]";
+  }
+}
+
+TEST(FallbackIconUrlParserTest, ParseFallbackIconSpecsEmpty) {
+  int size;
+  FallbackIconStyle style;
+  EXPECT_TRUE(ParseFallbackIconSpecs(",,,,", &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(FallbackIconUrlParserTest, ParseFallbackIconSpecsPartial) {
+  int size;
+  FallbackIconStyle style;
+  EXPECT_TRUE(ParseFallbackIconSpecs(",,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(FallbackIconUrlParserTest, ParseFallbackIconSpecsFull) {
+  int size1;
+  FallbackIconStyle style1;
+  EXPECT_TRUE(ParseFallbackIconSpecs("16,000,fff,0.75,0.25", &size1, &style1));
+  EXPECT_EQ(16, size1);
+  EXPECT_EQ(SkColorSetRGB(0x00, 0x00, 0x00), style1.background_color);
+  EXPECT_EQ(SkColorSetRGB(0xff, 0xff, 0xff), style1.text_color);
+  EXPECT_EQ(0.75, style1.font_size_ratio);
+  EXPECT_EQ(0.25, style1.roundness);
+
+  int size2;
+  FallbackIconStyle style2;
+  EXPECT_TRUE(ParseFallbackIconSpecs("48,f05,123456,0.5,0.3", &size2, &style2));
+  EXPECT_EQ(48, size2);
+  EXPECT_EQ(SkColorSetRGB(0xff, 0x00, 0x55), style2.background_color);
+  EXPECT_EQ(SkColorSetRGB(0x12, 0x34, 0x56), style2.text_color);
+  EXPECT_EQ(0.5, style2.font_size_ratio);
+  EXPECT_EQ(0.3, style2.roundness);
+
+  int size3;
+  FallbackIconStyle style3;
+  EXPECT_TRUE(ParseFallbackIconSpecs("1,000,000,0,0", &size3, &style3));
+  EXPECT_EQ(1, size3);
+  EXPECT_EQ(SkColorSetRGB(0x00, 0x00, 0x00), style3.background_color);
+  EXPECT_EQ(SkColorSetRGB(0x00, 0x00, 0x00), style3.text_color);
+  EXPECT_EQ(0, style3.font_size_ratio);
+  EXPECT_EQ(0, style3.roundness);
+}
+
+TEST(FallbackIconUrlParserTest, ParseFallbackIconSpecsDefaultTextColor) {
+  int size;
+
+  // Dark background -> Light text.
+  FallbackIconStyle style1;
+  EXPECT_TRUE(ParseFallbackIconSpecs(",000,,,", &size, &style1));
+  EXPECT_EQ(kDefaultTextColorLight, style1.text_color);
+
+  // Light background -> Dark text.
+  FallbackIconStyle style2;
+  EXPECT_TRUE(ParseFallbackIconSpecs(",fff,,,", &size, &style2));
+  EXPECT_EQ(kDefaultTextColorDark, style2.text_color);
+
+  // Light background -> Dark text, more params don't matter.
+  FallbackIconStyle style3;
+  EXPECT_TRUE(ParseFallbackIconSpecs("107,fff,,0.3,0.5", &size, &style3));
+  EXPECT_EQ(kDefaultTextColorDark, style2.text_color);
+}
+
+TEST(FallbackIconUrlParserTest, ParseFallbackIconSpecsFailure) {
+  const char* test_cases[] = {
+    // Need exactly 5 params.
+    "",
+    "16",
+    "16,000",
+    "16,000,fff",
+    "16,000,fff,0.75",
+    ",,,"
+    ",,,,,",
+    "16,000,fff,0.75,0.25,junk",
+    // Don't allow any space.
+    "16,000,fff, 0.75,0.25",
+    "16,000 ,fff,0.75,0.25",
+    "16,000,fff,0.75,0.25 ",
+    // Adding junk text.
+    "16,000,fff,0.75,0.25junk",
+    "junk,000,fff,0.75,0.25",
+    "16,junk,fff,0.75,0.25",
+    "16,000,junk,0.75,0.25",
+    "16,000,fff,junk,0.25",
+    "16,000,fff,0.75,junk",
+    // Out of bound.
+    "0,000,fff,0.75,0.25",  // size.
+    "4294967296,000,fff,0.75,0.25",  // size.
+    "-1,000,fff,0.75,0.25",  // size.
+    "16,000,fff,-0.1,0.25",  // font_size_ratio.
+    "16,000,fff,1.1,0.25",  // font_size_ratio.
+    "16,000,fff,0.75,-0.1",  // roundness.
+    "16,000,fff,0.75,1.1",  // roundness.
+  };
+  for (size_t i = 0; i < arraysize(test_cases); ++i) {
+    int size;
+    FallbackIconStyle style;
+    EXPECT_FALSE(ParseFallbackIconSpecs(test_cases[i], &size, &style))
+        << "test_cases[" << i << "]";
+
+  }
+}
+
+TEST(FallbackIconUrlParserTest, ParseFallbackIconPath) {
+  const std::string specs = "31,000,fff,0.75,0.25";
+  const std::string url = kTestUrl;
+  chrome::ParsedFallbackIconPath parsed;
+
+  // Everything populated.
+  EXPECT_TRUE(chrome::ParseFallbackIconPath(specs + "/" + url, &parsed));
+  EXPECT_EQ(kTestUrl, parsed.url);
+  EXPECT_EQ(31, parsed.size_in_pixels);
+  EXPECT_EQ(SkColorSetRGB(0x00, 0x00, 0x00), parsed.style.background_color);
+  EXPECT_EQ(SkColorSetRGB(0xFF, 0xFF, 0xFF), parsed.style.text_color);
+  EXPECT_EQ(0.75, parsed.style.font_size_ratio);
+  EXPECT_EQ(0.25, parsed.style.roundness);
+
+  // Empty URL.
+  EXPECT_TRUE(chrome::ParseFallbackIconPath(specs + "/", &parsed));
+  EXPECT_EQ("", parsed.url);
+  EXPECT_EQ(31, parsed.size_in_pixels);
+  EXPECT_EQ(SkColorSetRGB(0x00, 0x00, 0x00), parsed.style.background_color);
+  EXPECT_EQ(SkColorSetRGB(0xFF, 0xFF, 0xFF), parsed.style.text_color);
+  EXPECT_EQ(0.75, parsed.style.font_size_ratio);
+  EXPECT_EQ(0.25, parsed.style.roundness);
+
+  // Size and style are default.
+  EXPECT_TRUE(chrome::ParseFallbackIconPath(",,,,/" + url, &parsed));
+  EXPECT_EQ(kTestUrl, parsed.url);
+  EXPECT_EQ(gfx::kFaviconSize, parsed.size_in_pixels);
+  EXPECT_EQ(kDefaultBackgroundColor, parsed.style.background_color);
+  EXPECT_EQ(kDefaultTextColorLight, parsed.style.text_color);
+  EXPECT_EQ(kDefaultFontSizeRatio, parsed.style.font_size_ratio);
+  EXPECT_EQ(kDefaultRoundness, parsed.style.roundness);
+}
+
+}  // namespace chrome